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AUTO TRANS DIAGNOSIS - AW50- 42LE

1. Approx 1 Volt Below Battery Voltage Approx 1 Volt Below Battery Voltage pP 0 0 5 Volt Approx 1 Volt Below Battery Voltage a ara eae chet ipe ots sa ug DUO SE Gr 0 0 5 Volt QV EUIS Approx 1 Volt Below Battery Voltage RU e ev pcm bere E 0 0 5 Volt ee e cares 0 0 5 Volt UR VH M Mi Approx 1 Volt Below Battery Voltage ce eut booa dou eu add a a d se desee uae 0 0 5 Volt 0 0 5 Volt Ue Eie eod Usus Due Gy RE E S uie dE uS 0 0 5 Volt mnm 0 0 5 Volt 0 0 5 Volt lens esegue Approx 1 Volt Below Battery Voltage eua Lis aeree e teca efe d pepe D tees 0 0 5 Volt nm Approx 1 Volt Below Battery Voltage Measured betw terminal in table n measuring unit terminal A20 and DTC 322 P0730 GEAR RATIO INFORMATION INCORRECT 1 Check transmission oil level If oil level is low replace gear position sensor If check for short circuit to See GEAR POSITION If voltage readings are okay If voltage readings are not okay top off as necessary and check for leaks Repair as necessary If oil level is okay turn ignition on and check DTCs Test drive vehicle while observing automatic transmission warning light If light begins t
2. YEL GRH BRMIBLK REC SPEEDOMETER BATTERY POSITIVE TERMINAL BUNGE BLLUVBLK BEN BLK SURED CONN AW 50 42 AUTORIATIC TRANSMISSION CONTROL MANIF RIGHT SIDE OF ENGINE COMPARTMENT FRONT OF ENGINE ABOVE STARTER Fig 11 Volvo 850 1896 BLK 2 BLUBLE KICKDOWN SWITCH DM THRETTTI F CONTROLS FIREWALL 6100 LATE PROD 15351336 NEGATIVE BATTERY TERMINAL EN EARLY PROD 1335 REAR OF LEFT FRONT FENDER IH CENTRAL ELECTRICAL UNIT GAM HT 23 BAMIBLK BLU BLK 13 21 14 Js BRAKE SWITCH ABOVE BRAKE PEDAL YELIBEM NEL HT 1 15 7 ICA oL TEMPERATURE SEHSOR TRANSAXLE SOLENOIDS Transaxle Wiring Diagram AW50 42LI Lu ENGINE SPEED SENSOR oF TRANSAXLE BLUIGEY STARTING CHARGING SYSTEM EXTERIOR LIGHTS SYSTEM TRANSMISSION RANGE SELECTOR INDICATOR LEFT SIDE OF TRANSMISSION
3. Gees 31 8 0 1 05 26 6 28 7 0 Violet uice 1 89 482008 48 12 3 2 Piston Side Non Turbo Engine No nades 96 MAU SOY 24 6 0 28 7 0 Yellow 1221 452047900 Wu 28 7 0 Lt Green 1 1 393520 58 14 8 VEOlet diees 249 ITRON 44 11 3 GEGGn Sol 4 650 60 15 3 Turbo Engine No COLO villes 586 213 9 ce ec eh 24 6 0 WHIG TZI 3682580 228 0 0 cuu 126 690 dv cres 28 7 0 Lt Green 1 15382 352009 58 14 8 NoT GOLOS iuuentus 1 81 46 10 angaa maa 56 14 2 1 Not applicable to outer spring attached to piston CONTROL VALVE ASSEMBLY Removal amp Installation 1 Raise and support vehicl Remove transaxle oil pipe and drain fluid Undo clip securing oil temperature sensor harness Remove oil pan Torx screws and remove oil pan Disconnect 4 valve body solenoid wire connectors noting wire color and locations Remove 9 control valve assembly bolts noting length and location of bolts for installation reference Remove control valve assembly 2 To install reverse removal procedure Ensure bolts are installed in correct locations Tighten bolts to 89 INCH 155 10 N m Install 12 3 mm thick bead of sealing compound on oil pan and install pan Tighten
4. d E eters tees 2000 69r C207 city E Jel atin 900 LOA E DN NN Ri dM SIS RI IRURE E RU RIS 400 ELON CSONT E C PII MU m 125 21527 0 es qu ESI Ee RFT 75 302215509 binae bue cate ges eh E ED RU MU 27 RPM SENSOR 1 See Fig 8 unit terminals resistance is as Ensure ignition switch is off Using a DVOM measure resistance between measuring Resistance should be 300 600 ohms sensor and wiring are okay e specified is not as specified go to next step terminals No ohms 2 16 17 See Fig 9 If resistance is as specified sensor replace sensor not as specified THROTTLE POSITION SENSOR TPS 1 TCM See Fig 8 voltage between measuring unit 2 volt with throttle closed be throttle WOT I is not as specifi Ensure igni tch is off switch on terminals No tion swi Turn ignition f voltage is as specified 2 terminal No 7 volt voltage is not as Using a DVOM measure 20 and a good know If voltage is as specified d replace sensor specified TORQUE LIMITING SIGNAL VOLTAGE 1 Fig 8 Turn mode No 4 No 20 and 32 terminals No TC 2 1 volta wiring to still present Ensure ignition is off ignition on 20 and 34 is okay 20 and 50 s
5. regen ag Sheed e Pose Diagnostic Output Warning Indicator Light Dar Ms kr ek E eU M eres EAR Engine Load L4 uud eue Gia Sab Se ee Gear Position Sensor 762 eese eU ee rower S ies Mode Selector Switch MMOL Mode Selector Switch voeem LO deci dap eee eme tig je dede tied Speedometer 20 Linda be Lei dre Throttle Position Sensor ars eee sce teas Se revo e Brake Switch SG c NEIN SUCRE GROS eU Kickdown Switch 1 For terminal locations See Fig 10 Terminals not listed are blank replace f FRONT 1 a LL JL LL JI ol ols LL Ji LL CONNECTOR A vy T T e CONNECTOR B 95 321002 Fi 10 i g ies ue Ident sy of Volvo Car Courte DIAGNOSTIC TESTING 1995 DTC 112 0750 SHORT TO VOLTAGE IN 1 SHIFT SOL CIRCUIT 1 See TEST MODE 2 short circui Green White wire for a short circuit solenoid Turn ignition on Check solenoid function by using test mode No NO 4 If solenoid operates in Gree n White wire DTC 113 P0755 TCM FAULT 1 connector unit terminal No 2 terminals No next step 29 and ground ohmmeter does not read zero ohms Turn ignition off that uses battery power No 20 20 and If ohmmeter and ground
6. oid eer dod au tee ON 2 Teens Ista Reverse ON TEN CQ UPS l5 l5 Dace ee uS ON 1 Valve body contains 4 solenoids No 1 and No 2 Solenoids are used to control transaxle shifts No 3 solenoid is used to control torque converter lock up No 4 solenoid is used to control line pressure VEHICLE SPEED SENSOR Vehicle speed sensor mounted in transaxle housing is an input device consisting of speed sensor rotor and speed sensor Input Signal is delivered from speed sensor to TCM with each revolution of axle shaft TCM uses speed sensor input signal for controlling transaxle operation TROUBLE SHOOTING PRELIMINARY CHECKS Ensure fluid level is correct Inspect and adjust throttle cable kickdown cable and gear position sensor if necessary Check idle speed RPM and adjust as necessary NOTE Manufacturer recommends transaxle assembly replacement only Manufacturer does not provide mechanical trouble shooting information TESTING ROAD TEST D amp 3 Position 1 Engine and transaxle must be at normal operating temperature Shift transaxle into D position Set mode selector Switch to ECON position Test drive vehicle and ensure all upshifts and downshifts occur at specified speeds Refer to the appropriate SHIFT SPEED SPECIFICAT
7. Set gearshift lever to P position 4 or Volvo scan tool check wiring for an intermittent If solenoid does not operate check If wiring is okay replace Turn off all equipment in the vehicle Disconnect TCM Co Leave TCM disconnected Connect and betwee nnect measuring unit to TCM ohmmeter between measuring n measuring unit terminal 29 reads zero o Connect voltme If voltmeter reads hms go to next step If check grounds for an open circuit Reconnect TCM Turn ignition on consuming items as possible Turn on as many power ter between measuring unit If voltmeter does not read less grounds for an open circuit 3 nector unit to ECM on as many p between TCM terminal No than 10 volts 10 volts contact Ej con 4 ba ba Ensure igni nsure TCM is connected Connect an additional measuring ECM is connected Turn ignition on ower consuming items as possible nit terminal No connector measuring u 20 non go to go t chec TCM terminal A30 and 5 ba ba positive ter necessary 6 Ensure ig measuring unit terminals No ttery voltage ttery voltage minal and go t chec Ensure ig Reconnect TCM Turn ignition on Speed greater than 15 MPH tion is off Ensure or No If turbo next step check ground points for an open Repair as necessary Ensure ig measuring unit terminals No tery volta
8. peed alah se eie UE dud gea Xe den 36 2Hd lSt Mr cect E EE ee ege e 15 Sport Mode 35 2nd 3rde udine eux ree EE err qus 68 dires ecu vec qe UE 101 pst onde MM rn 86 SPd 2nD0 dde qut ou desde etes dE 57 2 RETE M p REM ES 24 1 With shift lever in D position and throttle valve open 60 percent LOCK UP SPEED SPECIFICATIONS LOCK UP SPEED SPECIFICATIONS 2 3L TURBO 1 2 3 Application MPH Economy amp Sport Mode Lock Up ON tee 129 Lock Up 4thGG 6 f coles ewe 124 1 With shift lever in D position and throttle valve open 60 percent 2 Lock up does not occur in 2nd gear until fluid temperatur xceeds 239 F 115 C 3 Lock up occurs in 4th gear only LOCK UP SPEED SPECIFICATIONS 2 4L NON TURBO 1 2 Application MPH Economy Mode Lock Up ON 2nd GOA 25 SEO GEATA ds haven te ee 49 Ath GEJE esos Sapte ate vee bier 73 Lock Up OFF 2 23 ord suere tees NE 44 ACA GEEAE 5 i eA eyed P 68 Sport Mode Lock Up ON 20d GEAR xu SIR
9. unit to ECM between TCM MEASURING UN ohms go to check for op Repair as ne connector IT RESISTANCE next step If en circuit in Ensure ignition is off Leave measuring unit and Disconnect TCM Connect measuring ECM disconnected Connect ohmmeter ECM measuring unit See TCM ECM CHECK table If ohmmeter reads about zero ohmmeter does not read about zero ohms Yellow Red Yellow Violet or Violet wire cessary MEASURING UNIT RESISTANCE CHECK TCM Terminal No ECM Terminal No OA od HR bicep tore tid pe 2 uA onte tatu aeter eee cos her s afi ave eb a eve den 3 QU reru egi ene Sieve XR RU 4 4 Ensure ignition is off Reconnect TCM and ECM Turn ignition on Connect voltmeter between TCM measuring unit terminals No 20 and 32 If voltmeter reads about 5 volts non turbo or about 11 volts turbo go to next step If voltmeter does not read about 5 volts non turbo or about 11 volts turbo check for short to voltage in Yellow Red wire 5 Ensure ignition is on Connect voltmeter between TCM measuring unit terminals No 20 and 33 If voltmeter reads about 5 volts non turbo or about 11 volts turbo go to next step If voltmeter does not read about 5 volts non turbo or about 11 volts turbo check for short to voltage in Yellow
10. Ignition Unit Diagnostic Unit 95120998 Fig 3 Locating Transaxle TCM amp Diagnostic Unit Courtesy of Volvo Cars of North America THROTTLE POSITION TP SENSOR Throttle position sensor mounted throttle body determines throttle position and delivers an input signal to TCM TCM uses input signal for controlling transaxle upshifts and torque converter lock up VALVE BODY SOLENOIDS Valve body solenoids mounted on the valve body are output devices controlled by signals received from the TCM The No 1 and No 2 solenoids are used to control transaxle shifting No 3 solenoid is used to control torque converter lock up No 4 solenoid is used to control transaxle line pressure For solenoid locations See Fig 2 For valve body solenoid usage see VALVE BODY SOLENOID APPLICATION table VALVE BODY SOLENOID APPLICATION 1 Shift Lever Position No 1 Solenoid No 2 Solenoid D Drive t t Gedr quud er dyer ON 2nd obegr aara ON lu Idea SS URN SR els ON SEC eoe E pe eye n OFF Ath Gear OFF mas TSt gaux oue eur oe e E Us ens ON QA 9 en ette ON SU de dE ELE on ME OFF mp Aut
11. Position Sensor 243 Mode Selector Switch ECONOMY Economy Mode 244 SDOEt w e 9X Sport Mode 2 2 2 4 314 WIhtef o RIDERS Winter Mode 324 Brake Pedal Depressed Brake Switch 334 Acc Pedal At Kickdown Switch 341 1 If response code is displayed component and circuit tested are okay 2 If response code 2 4 3 is present gear position sensor is faulty Test Mode No 3 Operating Components In Specified Order 1 Output signals are checked at various actuators to determine component operation Testing is performed in a cycle in which each component is activated 6 times with a short delay between each activation A longer delay occurs prior to testing next component The entire cycle is repeated 3 times then test is exited automatically 2 Test must be performed with shift lever in P or N position and vehicle must be stopped Test cannot be performed while driving vehicle Output signals can be monitored by watching or listening to appropriate component to be activated Engine RPM will increase during drive compensation activation and decrease during torque limiting activation If any signal fails to activate a component check wire 3 This test circuit and repair as possible mode is activated by briefly pressing test button on diagnostic unit button 3 time
12. No 1 Shift Solenoid Circuit TZ27 POTION eee even MOS Open No 1 Shift Solenoid Circuit 123 P0745 Yes Short To Voltage In Line Pressure Solenoid STH Circuit 124 lug aei scs e Short To Ground In Mode Selector Switch Circuit quud ed terr UE EE Yes Open Or Short To Ground In Line Pressure Solenoid STH Circuit 32 7POWAB MON ed TCM Fault 134 NO Incorrect Load Signal IU MERE No Short Circuit In Oil Temperature Sensor Circuit IAZ ueque NO Open Oil Temperature Sensor Circuit e Net NO Short To Ground In Kickdown Switch Circuit 2LI BPOU50 ege M AME ERE ERES TCM Fault 212 7P0Y755 NES uuu cus Short To Voltage In No 2 Shift Solenoid Circuit 213 0120 VSS Throttle Position Sensor Signal Too High DOV POTIS veo CMM RE Short To Ground In No 2 Shift Solenoid Circuit 2227B0755 uii SE YES oh nav EE ID Open In No 2 Shift Solenoid Circuit 223 BP04020 YES eee edes Throttle Position Sensor Signal Too Low 23 x Ree YGS Eu Erratic Throttle Position Sensor Signal 232 P0500 2 iz ese MSS unix Speedometer Signal Missing Or Vehicle Speed Signal Missing AB
13. SENSOR SIGNAL TOO LOW 1 Throttle Position sensor signal is normally 5 4 2 volts Opening throttle increases signal voltage If TPS voltages are not to specification check voltage drop over signal ground and power ground See DTC 113 TCM FAULT Repair as necessary If voltage drop and power ground are okay go to next step 2 Ensure ignition is off Disconnect TCM and ECM modules Connect ohmmeter between TCM measuring unit terminal No 20 and ECM measuring unit terminal No 50 non turbo or No 20 turbo If ohmmeter reads about zero ohms go to next step If ohmmeter does not read about zero ohms check Green Brown wire between TCM and ECM for an open circuit 3 Connect ohmmeter between TCM measuring unit terminals No 50 and 20 If ohmmeter reads infinite resistance go to next step If ohmmeter does not read infinite resistance check Green Brown wire between TCM and ECM for a short circuit to ground 4 Ensure ignition is off Connect measuring unit to TCM Connect ECM control modules Turn ignition on Measure voltage between measuring unit terminals No 50 and 20 Press accelerator pedal If voltmeter reads about 5 volt for closed throttle and about 4 2 volts for wide open throttle DTC was set due to poor terminal contact at ECM connector or ground If voltmeter does not read about 5 volt for closed throttle and about 4 2 volts for wide open throttle check TP sensor See appropriate K SENSOR RANGE CHA
14. SOLENOID CIRCUITS Using a DVOM measure resistance between appropriate solenoid wire connector and appropriate terminal at transaxle 26 pin connector Resistance should be zero ohms for each solenoid wire For transaxle connector terminal locations See Fig 9 For transaxle connector terminal identification see TRANSAXLE CONNECTOR TERMINAL IDENTIFICATION table If resistance is not as specified repair appropriate circuit as necessary I TRANSAXLE CONNECTOR TERMINAL IDENTIFICATION Terminal No 1 2 Component aues RS RERUM FIRED EIUS NES Gear Position Sensor 42 4 amp DL Oxo eui Oil Temperature Sensor Eeng I4 uS Gece Bere ae eee anes RPM Sensor A Mb i eer e E Sy onan eu E No 1 Shift Solenoid DDB M ue a ere rere a No 2 Shift Solenoid SUO RU Ee RAE Nc Lock Up Solenoid 24 3 125 ole ec oe ROS Aya Coast Bele es Line Pressure Solenoid 1 For terminal locations See Fig 9 2 Terminals 8 and 26 are blank 95E21001 ra 9 Ide 21 5 Transaxle Courtesy of cue of North America TCM WIRING CIRCUITS If component and or circuit fault is diagnosed check appropriate circuit between component and TCM connector terminal s repair as necessary If component and circuits are okay ee Fig 10 For TCM and TCM connector te
15. circuit resistance without influence from other systems 2 Disconnect negative battery cable Remove TCM cover located in right front engine compartment See Fig 3 Remove TCM Press adapter into TCM base Position adapter lead at front of TCM and thread through slot next to TCM 3 Press TCM with adapter connected into connector in bottom of box Connect measuring unit to adapter 60 connector See Fig 8 60 Pin Connector Measuring Unit ECU 93F79165 _ Fig 8 Installing Measuring Unit amp Adapter Courtesy of Volvo Cars of North America CLEARING CODES 1995 Vehicles 1 On 1995 vehicles codes can be cleared only after all DTCs have been displayed and first DTC has been repeated at least once To clear DTC turn ignition on Press test button on diagnostic unit and hold for more than 5 seconds Wait for LED response 2 Press button again and hold for more than 5 seconds LED should go out when button is released Ensure codes have been cleared by pressing button once If LED displays code 111 codes have been cleared TCM LOCATION TCM is located in right front of engine compartment between coolant recovery reservoir and washer fluid reservoir See Fig 3 SYSTEM TEST FUNCTIONS CAUTION Never disconnect or connect TCM connector with ignition Switch in ON position Follow tool manufacturer s instructions if retrieving codes with Volvo Diagnostic Key Scan Too
16. oil pan Torx screws to 18 ft lbs 25 N m GEAR POSITION SENSOR Gear position sensor may also be referred to as neutral battery tray and air intake hos reverse removal procedure tion and parking brake is Remove air tion of notch on sensor for Loosen dipstick transaxle Remove sensor Ensure NOTE safety switch Removal amp Installation 1 Ensure transaxle is in N posi applied Remove battery cleaner assembly Disconnect transaxle cable from shift rod arm Remove shift rod arm from sensor Note posi installation reference 2 Remove nut washer and seal from sensor bracket Remove 2 bolts securing sensor to from control shaft To install notch on sensor is located in exact positio Tighten 2 sensor bolts to 18 ft lbs SELF DIAGNOSTIC SYSTEM DIAGNOSTIC PROCEDURE 25 N Ensure transaxle fluid level contaminated nor aerated n as prior to removal m Vhen performing vehicle diagnosis is correct and fluid is neither Ensure throttle and kickdown cables are properly adjusted See appropriate AUTOMATIC TRANSMISSION SERVICING article in TRANSMISSION SERVICING section Ensure battery is fully charged Perform visual inspection ensuring all electrical connections at transaxle TCM throttle position sensor gear position sensor speed sensors and brake switch are clean and properly installed Repair diagnostic trouble cod
17. requires 3 series of flashes A 3 second interval separates each series of flashes See Fig 7 For DTC definition see appropriate DIAGNOSTIC TROUBLE CODE DEFINITION table under TROUBLE CODE DEFINITION 3 SECONDS 3 SECONDS TEXE Fig 7 Counting Red LED Code Flashes For Code 213 Courtesy of Volvo Cars of North America DIAGNOSTIC SYSTEM FAULTS c Diagnostic Unit LED Does Not Flash 1 Disconnect diagnostic unit Turn ignition on Check for voltage at diagnostic connector terminal No 4 If voltage is not present check fuse and wiring If voltage is present turn ignition off 2 Connect an ohmmeter between diagnostic connector terminal No 8 and ground Ohmmeter should indicate approximately zero ohms If reading is not approximately zero ohms check wiring If wiring is okay replace diagnostic unit Diagnostic Unit LED Flashes But TCM Does Not Respond Turn ignition on Check for voltage at diagnostic connector terminal No 2 and ground Approximately 5 volts should be present Check for voltage at diagnostic connector terminal No 6 and ground Approximately 5 volts should be present If voltage is not as Specified check wiring and repair as necessary MEASURING UNIT Connecting Measuring Unit 9813190 amp Adapter 9813195 1 Measuring unit is used to measure system voltage while engine is running Measuring unit also is used to check individual
18. transaxle and No 25 Violet White check for short circuit in Violet and Violet White wiring If ohmmeter does not read about ohms go to next step 4 Access and disconnect soleno transaxle connector terminals No 24 and ohmmeter does not read about 2 6 ohms r 2 6 id STH Connect ohmmeter between pins on solenoid connector If ohmmeter reads about 2 6 ohms check Violet and Violet White wiring between solenoid STH and 25 for a short circuit If eplace TCM DTC 124 SHORT TO GROUND IN MODE SELECTOR SWITCH CIRCUIT 1 Turn ignition off Carefully pry driving mode selector Switch from center console Ensure controls for selector operate smoothly and do not stick Ensure W button does not stick in depressed position and operates smoothly without catching Shake driving mode selector to see if there ar Replace as necessary If driving mode se step 2 Disconnect driving mode sele Black wires Put switch in mode S Con Green Orange and Black wires Ensure W ohmmeter between Green Orange and Brown infinite resistance for all tests go to not read infinite resistance for all tests selector module loose parts in the switch lector is okay go to next ctor connector Put switch in mode E Connect ohmmeter between selector terminal Brown Green and nect ohmmeter between button is up Connect Green wires If ohmmeter reads next step I
19. 5 1035 LOA 0 eth perm IR e SR rem i ipo 340 460 176 5580 Dream els eere mds 107 143 eire Std tret 64 86 CLO Ee PAG hae Ray ve le 23 31 DTC 142 OPEN IN OIL TEMPERATURE SENSOR CIRCUIT 1 Check for open or short circuit to ground or voltage in oil temperature sensor signal wiring Repair as necessary If wiring is okay go to next step 2 Ensure ignition is off Remove air cleaner housing to access transaxle connector Disconnect transaxle connector Connect ohmmeter between transaxle connector terminal No 13 Blue Black wire and ground If ohmmeter reads about zero ohms go to step 4 If ohmmeter does not read about zero ohms go to next step 3 Check TCM connector for poor terminal contact Repair as necessary Connect ohmmeter between transaxle connector terminal No 13 and ground If ohmmeter reads about zero ohms DTC was set because of poor terminal contact If ohmmeter does not read about zero ohms check Blue Black wire for an open circuit 4 Turn ignition on Connect voltmeter between transaxle connector terminal No 12 Blue Green wire and ground If voltmeter reads about 5 volts check oil temperature sensor resistance See DTC 141 SHORT CIRCUIT IN OIL TEMPERATURE SENSOR CIRCUIT If voltmeter reads less than 5 volts go to next step If voltmeter reads greater than 5 volts check Blue G
20. AUTO TRANS DIAGNOSIS AW50 42LE 1995 Volvo 850 1995 AUTOMATIC TRANSMISSIONS Volvo AW50 42LE Electronic Controls 850 APPLICATION TRANSMISSION APPLICATIONS Vehicle Model Transmission Model 350 e eg UR ERES PU A RE M dx NR e E EE AW50 42LE NOTE Overhaul information or specifications are not available In case of internal malfunction manufacturer recommends replacing transaxle as an assembly CAUTION Vehicl is equipped with a Supplemental Restraint System SAS When servicing vehicle use care to avoid accidental air bag deployment SRS related components are located in Steering column center console instrument panel and lower panel on instrument panel DO NOT use electrical test equipment on these circuits If may be necessary to deactivate SRS before servicing components For 1995 850 see the AIR BAG RESTRAINT SYSTEM article in the ACCESSORIES SAFETY EQUIP section IDENTIFICATION Transaxle can be identified by identification plate attached to top of transaxle case See Fig 1 Identification plate contains transaxle model year of manufacture and transaxle part number 1 Transaxle Model 5 Designates 50 42LE 2 Transaxle Part Number 6 Transaxle Manufactured For Volvo 3 Year Of Manufacture 7 Manufacturing Number Starting 4 Month Of Manufacture June With 0001 Each Month 95620996 Fig 1 Locating Transaxle Identification Plate In
21. C 222 P0755 OPEN IN NO 2 SHIFT SOLENOID CIRCUIT 1 Turn ignition on Set gearshift lever to P position Check solenoid function by using test mode No 4 or Volvo scan tool See TEST MODE NO 4 If solenoid operates check wiring for an intermittent short circuit If solenoid does not operate go to next step 2 Turn ignition off Connect measuring unit to TCM Connect ohmmeter between measuring unit terminals No 20 and 28 If ohmmeter reads about 10 15 ohms repair poor terminal contact at connector If ohmmeter does not read about 10 15 ohms go to next step 3 Remove air cleaner housing to access transaxle connector Disconnect transaxle connector Connect ohmmeter between transaxle connector terminal No 22 Violet wire and measuring unit terminal No 28 If ohmmeter reads about zero ohms go to next step If ohmmeter does not read about zero ohms check for open circuit in Violet wire 4 Disconnect transaxle connector Connect ohmmeter between transaxle connector terminal No 22 Violet wire and ground If ohmmeter reads 10 15 ohms repair poor terminal contact at TCM connector If ohmmeter does not read 10 15 ohms go to next step 5 Access and disconnect shift solenoid No 2 Connect ohmmeter between solenoid terminal and ground If ohmmeter reads about 10 15 ohms check for short circuit to ground in Violet wire If ohmmeter does not read about 10 15 ohms replace solenoid DTC 223 P0120 THROTTLE POSITION
22. G BU GENIBLK GEMiORG BRNIGRY GRNVBRN BLLWBLK CONN B SEL WHT REAR OF LEFT FRONT FENDEF 6105 6201 1838 RIGHT IM CENTRAL SIDE OF ELECTRICAL UNIT WP p r El 555 ABOVE STARTER 4 CENTRAL ELECTRICAL lun LEFT FEAR ENG COMPT 1935 1336 2 3L TURBO 1936 2 4L 1235 2 4L ENGINE 133511396 YELIEED YEWYIO PNK GREEN GENFWHT 1395241 ENGINE GRWOFG LOW GEAR INSTRUMENT CLUSTER GEYPWHT SPEEDO METEF 4 GEYONG YEL RED PNK GENIBEN GENIHT BLLVRED 10 PNK GDMISHT 3 E E Fi 5 INTERIOR LIGHTS 4 PNK 22 SYSTEM BENE BLU RED A12 WHE BSS 42 GRNWELK E26 XELRED XEL VIO 63 vo 54 PNK Bia GRNIERN 520 GRNMWHT BLUIRED 9250 BLUIRED YEURED XELVID VIO ES GEN ERN E20 pfo PNK Bia GEN ERN 20 GRNMWHT Bod BLU RED BLU RED a 7 RIGHT SIDE OF NP d GEAR SELECTOR ILLUMINATION MOTRONIC 4 9 MFI CONTROL MODULE 2 81 TURBO MOTRONIC 4 4 CONTROL MODULE 2 41 RIGHT FRONT ENGINE COMPARTMENT EZK Di IGNITION CONTROL MODULE RIGHT FRONT ENGINE COMPARTMENT LH3 2 MFI CONTROL MODULE RIGHT FRONT OF ENGINE COMPARTMENT
23. IONS table 2 Ensure lock up occurs at appropriate speeds 5 LOCK UP SPEED SPECIFICATIONS table Lightly depress accelerator If xcessive increase in engine RPM exists lock up did not occur NOTE Lock up does not occur at coolant temperatures below 68 F 20 C Lock up in 2nd gear occurs when transaxle oil temperature exceeds 239 F 115 C L Position While driving vehicle in L position check for failure to upshift to 2nd gear Check engine braking effect when accelerator pedal is released R Position Shift vehicle into R position Accelerate vehicle and check for transaxle slippage P Position Stop vehicle on incline of 5 degrees or steeper Shift vehicle into P position and release parking brake Ensure parking pawl prevents vehicle from moving TIME LAG TEST 1 Engine and transaxle must be at normal operating temperature Start engine and ensure idle RPM is within specification with A C off Apply service and parking brakes Using stop watch measure time until engagement shock is felt when shift lever is shifted from N to D position 2 Allow one minute intervals between tests Perform time measurement several times and calculate average time Time should be less than 7 seconds Repeat test procedure to test time lag when shift lever is shifted from N to R position Time lag should be less than 1 2 seconds If test t
24. No 5 and 20 If voltmeter reads 0 5 volt twist gear position sensor lever shaft up down and to side If voltage reading remains constant system is okay If voltage reading does not remain constant go to next step 10 Turn ignition off Check gear position sensor adjustment Repair as necessary See DTC 313 GEAR POSITION SENSOR SIGNAL INCORRECT If adjustment is okay replace gear position sensor DTC 323 LOCK UP SLIPS OR IS NOT ENGAGED 1 Turn ignition on Clear DTCs Test drive vehicle If transmission does not show any malfunction go to next step If transmission has mechanical malfunction DTC 323 is not reset diagnose mechanical malfunction If transmission has a mechanical malfunction and DTC 323 is reset replace transmission 2 Ensure ignition is on Connect measuring unit to TCM connector Connect ohmmeter between measuring unit terminals No 9 and 20 If ohmmeter reads 10 15 ohms transmission is probably okay However if problem persists replace transmission If ohmmeter does not read 10 15 ohms check TCM connector for poor terminal contact Repair as necessary DTC 331 SHORT TO VOLTAGE IN LOCK UP SOLENOID CIRCUIT Turn ignition on Set gearshift lever to P position Check solenoid function by using test mode No 4 or Volvo scan tool See TEST MODE NO 4 If solenoid operates check wiring for an intermitten
25. ORE engine is started Test Mode No 1 Displaying Codes 1 To display DTCs open diagnostic unit cover located in right corner of engine compartment and connect test lead to socket No 1 Turn ignition on Enter test mode No 1 by pressing test button once for 1 3 seconds 2 Observe LED and count number of flashes in 3 digit series comprising a DTC Because series are displayed at 3 second intervals codes can be easily distinguished 3 If DTC is displayed refer to appropriate DIAGNOSTIC TROUBLE CODES DEFINITION table under TROUBLE CODE DEFINITION Depress button again and check for additional codes Depress button a third time if necessary If first code repeats no other codes are present Test Mode No 1 Clearing Codes 1 Codes can be cleared only after all DTCs have been displayed and first DTC has been repeated at least once To clear DTCs turn ignition on Press button on diagnostic unit and hold for more than 5 seconds Wait for LED response 2 Press button again and hold for more than 5 seconds LED should go out when button is released Ensure codes have been cleared by pressing button once If LED flashes code 1 1 1 codes have been cleared Test Mode No 2 Verifying Operation Of System Components 1 Sensors and switches are activated by diagnostic unit When TCM receives a signal a response code is displayed for each input sig
26. RTS article in ENGINE PERFORMANCE DTC 231 ERRATIC THROTTLE POSITION SENSOR SIGNAL E 1 Throttle Position TP sensor signal is normally 5 4 2 volts Opening throttle increases signal voltage If TPS voltages are not to specification check voltage drop over signal ground and power ground See DTC 113 TCM FAULT Repair as necessary If voltage drop and power ground are okay go to next step 2 Turn ignition off Ensure TP sensor wiring and Brown Green wire between TCM and ECM are not located near sources of interference such as electric motors spark plug wires and mobile telephone wires Repair as necessary DTC 232 P0500 SPEEDOMETER SIGNAL MISSING 1 Speedometer provides vehicle speed information to TCM TCM uses signal to determine whether transmission changes gear at correct speeds If DTC 232 is set use scan tool and compare vehicle speed with speedometer If reading is correct go to step 3 If reading is incorrect check for speedometer malfunction See appropriate INSTRUMENT PANELS article is okay step 2 in ACCESSORIES 68 EQUIPMENT If speedometer check for an open circuit signal wiring Repair as necessary Ensure ignition is off Shift transmission to N position or shor If wiri to voltage or ground in ng is okay go to next Connect t measuring unit to TCM Raise a nd support fro
27. S VES Speedometer Signal Incorrect 2 High Oil Temperature 245 duces ok P Open Or Short In Torque Limiting Circuit SIlZPOTJIT5 ice VES RPM Signal Missing Or Transmission Speed Sensor Signal Missing BAD E UE E ER YES e uude RPM Signal Incorrect 313 0705 xime Gear Position Sensor Signal Incorrect 321 P0731 322 P0732 323 P0733 amp 324 P0734 Incorrect Gear Ratio 322 0730 Yes Gear Ratio Information Incorrect S23 CS ione woes Yes Lock Up Slips Or Is Not Engaged 332 NON gerit Short To Voltage In Lock Up Solenoid Circuit SP MEC PET rM TRE No Open In Lock Up Solenoid Circuit C MENT P ie Screens Short To Ground In Lock Up Solenoid Circuit SAM VE Ert E S E Lock Up Function Slips Or Disengages JUL wein idque Control Module EEPROM Memory Fault Siesta So ERE e E Battery Voltage Too Low 1 Warning light is located in instrument panel When a fault occurs DTC is recorded and warning light comes on If fault is intermittent warning light will go out but DTC will remain 2 Only for as long at oil temperature remains high 3 If DTC is prese
28. TURE SENSOR Oil temperature sensor located below transaxle oil pan measures transaxle fluid temperature and delivers an input signal to TCM TCM uses input signal for controlling transaxle shifting and torque converter lock up SHIFT LOCK OVERRIDE FUNCTION Move shift lever to P position and turn ignition key to I or II position Press override button Shift lever should move from P position Return shift lever to P position and remove ignition key Press override button Shift lever should not move from P position Override function should operate only when ignition key is in I or II position TRANSAXLE CONTROL MODULE TCM TCM is located in control module box in engine compartment between coolant recovery reservoir and washer fluid reservoir TCM is in position No 3 in module box See Fig 3 TCM determines shift points and torque converter lock up timing based on input signals received from various components Components consist of mode selector Switch throttle position sensor engine speed RPM sensor vehicle Speed sensor gear position sensor transaxle oil temperature sensor brake switch and kickdown switch TCM contains a self diagnostic system which stores a Diagnostic Trouble Code DTC If a transaxle problem exists DTC s can be retrieved to determine transaxle problem area Fuel Injection ECU Ul lig x _ Transaxle Control Module TCM
29. To check speed signal wiring to instrument panel connect measuring unit to instrument panel 30 pin connector Ensure ignition is off Using a DVOM measure resistance between measuring unit terminal No 6 and TCM connector B terminal No 18 See Fig 10 4 Resistance should be zero ohms If resistance is not as specified check wiring circuit and repair as necessary If resistance is as specified check for incorrect installation of wiring which may cause interference such as ignition wiring mobile phone etc VALVE BODY SOLENOIDS 1 Remove transaxle oil pan Disconnect solenoid wire connector s For solenoid wire color identification see SOLENOID WIRE COLOR IDENTIFICATION table Using a DVOM measure resistance between appropriate solenoid terminal and ground Resistance should bel0 15 ohms for No 1 No 2 and torque converter lock up solenoids If resistance is not as specified replace solenoid 2 Using DVOM measure resistance between line pressur Solenoid terminals Resistance should be 2 6 ohms If resistance is not as specified replace solenoid SOLENOID WIRE COLOR IDENTIFICATION Solenoid Wire Color eu dax eria e Nbre Ger ah cab beds eis White MEET Black Lines Pressure Auges a ba eue t t EUR Blue amp Brown Torque Converter Lock Up el allele incite Red VALVE BODY
30. Violet wire 6 Ensure ignition is on Connect voltmeter between TCM measuring unit terminals No 20 and 34 If voltage is to Specification go to next step If voltage is not to specification check for short to voltage in Violet wire See TCM VOLTAGE CIRCUIT CHECK table TCM VOLTAGE CIRCUIT CHECK ECM Type Voltage NE dust D re te 5 TUDOS Suterecxce ete one NUR S mus de 10 7 Ensure ignition is on Connect voltmeter between TCM measuring unit terminals No 20 and 32 Voltmeter should read about 5 volts non turbo or about 10 11 volts turbo Check torque limiting ICl operation using scan tool or test mode No 4 See TEST MODE NO 4 If voltage drops rapidly to about zero volts when signal is activated go to next step If voltage does not drop replace TCM 8 Ensure ignition is on Connect voltmeter between TCM measuring unit terminals No 20 and 33 Voltmeter should read about 5 volts non turbo or about 10 11 volts turbo Check torque limiting IC2 operation using scan tool or test mode No 4 See TEST MODE NO 4 If voltage drops rapidly go to next step If voltage does not drop replace TCM 9 Ensure ignition is on Connect voltmeter between TCM measuring unit terminals No 20 and 34 See TCM VOLTAGE CIRCUIT CHECK table Check TCM acknowledge signal and activ
31. ate torque limiting 1 2 using scan tool or test mode No 4 See TEST MODE NO 4 If voltage drops fault is intermittent Check for poor terminal contact or open circuits in wiring If voltage does not drop replace ECM DTC 311 P0715 RPM SIGNAL MISSING 1 Ensure ignition is off Connect measuring unit to TCM Measure resistance between measuring unit terminals No 1 and 2 If resistance is 300 600 ohms sensor and wiring are okay If resistance is not 300 600 ohms go to next step 2 Measure resistance between transmission 26 pin connector terminals No 16 Yellow White wire and No 17 Yellow Brown wire If resistance is 300 600 ohms sensor is okay Check wiring If resistance is not 300 600 ohms check wiring If wiring is okay replace sensor DTC 312 RPM SIGNAL INCORRECT 1 Check for additional DTCs DTC 311 is present see DTC 311 RPM SIGNAL MISSING If DTC 311 is not present go to next step 2 Ensure RPM sensor is correctly positioned Check transmission and TCM connectors for poor terminal contact Repair as necessary Check Yellow Brown and Yellow White wires between RPM sensor and TCM Repair as necessary If all components are okay ensure RPM sensor wiring is not located close to sources of interference such as electric motors or spark plugs DTC 313 P0705 GEAR POSITION SENSOR SIGNAL INCORRECT 1 If 313 is set check gear shift posit
32. ck ground wire is okay Turn ignition on If terminal contact is Repair as go to next step Connect voltmeter between selector If about 11 volts are present go to next step If battery circuit to go tact Repair as n circuit in check for an ope 4 Connect voltmeter between selector switch Green Orange and Black wires If about 11 volts are present go to step 6 If zero voltage is present go to next step If battery voltage is present check Green Orange wire for a short circuit to voltage 5 Check TCM connector for poor terminal contact Repair as necessary If TCM connector is okay check for an open circuit in Green Orange wire 6 Turn ignition off Switch selector to position S Connect ohmmeter between Brown Green and Black wires Switch selector to position E Connect ohmmeter between Green Orange and Black wires If ohmmeter does not read zero ohms in both cases replace driving mode selector module If ohmmeter reads zero ohms DTC was set because of poor terminal contact in mode selector connector DTC 121 P0750 SHORT TO GROUND IN NO 1 SHIFT SOL CIRCUIT 1 Turn ignition on Set gearshift lever to P position Check solenoid function by using test mode No 4 or Volvo scan tool See TEST MODE NO 4 If solenoid operates check Green White wire for an intermittent short circuit If solenoid does not operate go to next step 2 Turn ignition off Remove air cleaner housing to acce
33. e and gasket Remove one accumulator piston and spring and 3 modulator valves and springs Note location and direction of all components during removal Lay all components on workbench exactly as removed from control valve assembly 3 Clean all components in solvent Dry with compressed air Ensure valve spools are not worn and that valves move easily in their bores Valve spools may be dressed using extremely fine emery cloth if necessary Measure accumulator valve spring free length and outside diameter Replace springs if not within specification See appropriate ACCUMULATOR SPRING SPECIFICATIONS table 4 To install reverse removal procedure Replace accumulator n seal rings prior to installation Lubricate seal rings with ATF Ensure components are installed in correct direction and ion Tighten cover plate bolts to 62 INCH lbs 7 N m ACCUMULATOR SPRING SPECIFICATIONS 1995 Spring Free Length Outer Diameter Color In mm In mm 1 Piston Side Non Turbo Engine NOs COLORS 3 906 24 4 Levy euros 28 7 0 MVlrolet Ts EO 28 5 Jil Se 31 8 0 Blus Leu d 1 05 26 6 Se eR 28 7 0 Vit 1 289 48 12 3 Turbo Engine YGllOW sereset esse 90 22n BAe a bit S ER RED Joe E 2125 285
34. eV NS e sce Ie e e 35 Ord Gedd uses Wiesen UE Rue Rex REPRE UE ens 65 At GOGY esd chavs ducet ak cete o siege e m eov ie due dp Ie es 96 Lock Up OFF Gears 145 204 b pda e SEN i PR deeds tice Rus 33 Ord Gear WU d Ne UE Ode Saas 60 pP 90 1 With shift lever in D position and throttle valve open 60 percent 2 Lock up does not occur in 2nd gear until fluid temperature exceeds 239 F 115 C STALL SPEED TEST 1 Operate engine and transaxle at normal operating temperature Connect tachometer to vehicle and ensure it is visible to driver Apply parking brake and block all 4 wheels CAUTION DO NOT maintain stall speed RPM for more than 5 seconds Transaxle damage may occur 2 Ensure A C is off Start engine apply brakes and place transaxle in D position Depress accelerator to full throttle and note maximum RPM obtained Repeat test in R position For stall Speed specifications see STALL SPEED SPECIFICATIONS table STALL SPEED SPECIFICATIONS Engine Application RPM 2 9h TUDO ies ha eR D die SUE V ee UR 2900 ZI Gc RR sor Ro rms Dia SI RUSO P die GE 2650 3 If stall speed RPM recorded is lower or higher then Specified check fluid color and odor If fluid color and odor is nor
35. eads a steady zero volts for some or all terminals regardless of selector position go to step 7 If voltmeter reads a steady 12 volts for some or all terminals regardless of selector position check for short circuit to voltage in wiring for terminal with incorrect reading between gear position sensor and TCM then go to step 8 5 Ensure ignition is off Check transaxle connector for poor terminal contact Repair as necessary Turn ignition on Connect voltmeter between measuring unit terminal No 20 and gear position sensor terminal See GEAR POSITION SENSOR VOLTAGE SPECIFICATIONS table If voltage readings are okay DTC was set because of poor terminal contact If voltage readings are not okay go to next step 6 Ensure ignition is off Disconnect transaxle connector Connect ohmmeter between transaxle connector terminal and measuring unit terminal See TRANSAXLE CONNECTOR MEASURING UNIT TERMINAL RESISTANCE table If ohmmeter reads about zero ohms for all readings replace gear position sensor If ohmmeter does not read about zero ohms for all readings check for open circuit in wiring between transaxle connector and TCM Repair as necessary 1 TRANSAXLE CONNECTOR MEASURING UNIT TERMINAL RESISTANC E Transaxle Connector Terminal Measuring Unit Terminal IB White wire Yellow wire Gre
36. en switch terminals No 2 Green Orange wire and 5 Light Blue wire when switch is in SPORT mode Resistance should be infinite When mode selector switch is moved to any other position zero ohms should exist 2 Measure resistance between switch terminals No 3 Brown Gray wire and 5 Light Blue wire when switch is in ECON mode Resistance should be infinite When mode selector switch is moved to any other position zero ohms should exist If resistance is not as Specified replace mode selector switch OIL TEMPERATURE SENSOR 1 Ensure ignition switch is off Connect measuring unit to TCM See Fig 8 Using a DVOM measure resistance between measuring unit terminals No 14 and 15 If resistance is as specified in OIL TEMPERATURE SENSOR RESISTANCE table sensor and wiring are okay If resistance is not as specified go to next step 2 Disconnect transaxle 26 pin connector See Fig 2 Connect DVOM leads to 26 pin connector terminals No 12 and 13 See Fig 9 Measure resistance between 26 pin connector terminals oil temperature sensor terminals as transaxle fluid temperature gradually increases If resistance is not as See OIL TEMPERATURE SENSOR RESISTANCE table Specified replace oil temperature sensor OIL TEMPERATURE SENSOR RESISTANCE Temperature Resistance F Ohms S25 de doce t desde dd
37. en wire Blue wire 0 connectors Blue wire ohmmeter reads infini ohmmeter does not read infinite resistance n transaxle connector and TCM E Connect TCM and transaxle Turn ignition on Connect voltmeter between measuring unit 20 and gear position sensor terminal SENSOR VOLTAGE SPECIFICATIONS table gear position sensor is okay replace gear position sensor ground in wire betwee Ensure ignition is off connectors terminal No E 7 8 Ensure ignition is off Disconnect transmission and TCM Connect ohmmeter between measuring unit terminal No 20 and gear position sensor connector terminals No 3 Green wire No 4 No 5 Blue wire and No 6 te resistance Green Red wire If GEAR POSITION SENSOR VOLTAGE SPECIFICATIONS 1 Gearshift Position amp Measuring Unit Terminal p 4 5 6 RU A3 4 5 6 4 5 6 D 4 5 6 3 4 5 6 DL A3 A4 A5 A6 1 Specification 0 0 5 Volt np ere eis Approx 1 Volt Below Battery Voltage she ias Approx 1 Volt Below Battery Voltage RU Qe cS UE RUE 0 0 5 Volt ss V ania Dat e E 0 0 5 Volt m eve eee 0 0 5 Volt m Approx 1 Volt Below Battery Voltage Sib
38. ensor is okay Connect measuring unit to TCM Check torque limiting signals using test 1 terminals No ge is correct VEHICLE SPEED SENSOR VSS 1 Fig 8 N position 2 Conne and 48 Battery spin other wheel To check speed signal Raise and support front wheels of vehicle Turn ignition on voltage should be present ct voltmeter betw rapidly Voltage should be 20 and 33 acknowledged signal between zero and 5 volts at each pair of terminals If and or TC2 voltage is not as specified but TC2 voltage is not If all voltage measurements are correct replace TCM TC2 connect measuring unit to TCM Set shift n measuring unit terminal Block one front wheel and 4 7 volts If vol Connect measuring unit to If If resistance Measure resistance between transaxle 26 pin connector Resistance should be 300 600 If resistance is Connect measuring unit to Using a DVOM measure Voltage should and up to 4 8 volts with wide open If voltage ltage between measuring unit n ground Voltage should be less than TCM is properly grounded check for poor ground connection If See Using a DVOM measure voltage at measuring unit terminals and between Voltage should vary fault is in fault is in but fault is See lever to 5 No 20 ltage is consistently high or low check wiring for an open or short circuit If no fault is found replace TCM 3
39. es in order displayed Volvo diagnostic unit 1995 vehicles or scan tool 1995 and 1996 vehicles can be used in 6 different system test functions using manufacturer s instructions to activate System components and perform several tests on transaxle See SYSTEM TEST FUNCTIONS SELF DIAGNOSTICS Signals from various sensors are monitored continuously by TCM If certain signals are lost or become faulty TCM will cut off electrical signal to transaxle components to protect transaxle TCM adopts fixed substitute values limp home mode to enable vehicle to be driven when certain failures occur Warning indicator light will illuminate Transaxle will not shift gears due to lack of electrical Transaxle will operate in 4th gear in D and in 3rd gear in L position Manual shifting is possible into all other shift lever positions When starting off in limp home mode shift lever should be signal in L position to minimize transaxle wear Faults are recorded in TCM memory in the form of Diagnostic Trouble Codes DTCs On 1995 vehicles DTCs can be displayed using LED on Volvo diagnostic unit in engine compartment using Volvo Diagnostic Key Scan Tool connected to Volvo Data Link Connector DLC in engine compartment using Volvo System Tester Scan Tool connected to Volvo Data Link Connector DLC in engine compartment or using an aftermarket scan tool c
40. f ohmmeter does replace driving mode 3 Disconnect TCM Connect ohmmeter between TCM side of selector terminal Brown Green and Black wires If ohmmeter reads infinite resistance check for short circuit to ground in Green Orange resistance check for short wire If ohmmeter does not read infinite circuit to ground in Brown Green wire DTC 131 OPEN OR SHORT TO GROUND IN LINE PRESSURE SOLENOID STH CIRCUIT 1 Check for open or short circ signal wiring or signal wiring See DTC okay check solenoid voltage supply Rep supply is okay go to next step 2 1 solenoid Disconnect solenoid Connect solenoid connector If ohmmeter reads 2 replace TCM DTC 132 P0745 TCM FAULT Check TCM connector for poor te necessary Check for open circuit in 1 See DTC 113 TCM FAULT Repair as necess voltage ground circuits are okay replac uit to ground in control 113 TCM FAULT If wiring is air as necessary If vol hmmeter between terminal ltage Ensure ignition is off Open control system and access ls in 6 ohms check Violet White and Violet wires for an open circuit If ohmmeter does not read 2 6 ohms rminal contact Repair as voltage supply or grounds ary If TCM connector and e TCM DTC 134 INCORRECT LOAD SIGNAL 1 Load signal from being delivered by engin signal RPM is greater than about 600 RPM DTC 134 will set 2 If DTC 134 is set check for poor ter
41. formation Courtesy of Volvo Cars of North America DESCRIPTION Transaxle is a 4 speed overdrive electronically controlled automatic transaxle Transaxle consists of lock up torque converter oil pump 3 planetary gear sets clutch and brake units accumulator pistons valve body and 4 electronic valve body solenoids Valve body with solenoids and Transaxle Control Module TCM are used for controlling transaxle operation Solenoids are controlled by TCM TCM receives input signals from various components to determine transaxle shift points and torque converter lock up Components consist of mode selector switch throttle position sensor engine speed RPM sensor vehicle speed sensor gear position sensor transaxle oil temperature sensor brake switch and kickdown switch See Fig 2 Transaxle is equipped with a mode selector switch Switch is used for normal high performance and winter driving conditions Transaxle is also equipped with a shift lock and key interlock system Shift lock system prevents shift lever from being moved from Park position unless brake pedal is applied In case of malfunction shift lever can be released by depressing shift lock override button located near shift lever Key interlock system prevents ignition switch from being moved from ACC to LOCK position unless shift lever is in Park position 1 Torque Converter Housing 8 Gear Position Sensor 2 Tran
42. ge tery voltage tion is on 29 a o next step k for an open fuse No 11 1 nition is on 10 a o next step k for an ope ni n nition is off nd 30 If volt nd 20 If volt TCM terminal A30 less than 6 volts go to than 6 volts check Connect measuring unit to TCM urn Connect voltmeter 20 and ECM measuring unit 42 turbo If voltmeter reads 1 voltmeter does not read less than circuit or poor terminal SS Connect voltmeter between TCM If voltmeter reads about meter does not read about in Blue Red wire betw as necessary voltmeter between TCM voltmeter reads about meter does not read about Circuit in wiring between battery Blue Red wire Repair as circui Repair Connect If n Disconnect measuring unit Clear DTCs Test drive vehicle at a If DTC resets replace TCM DTC 114 MODE SELECTOR SWITCH CIRCUIT MALFUNCTION 1 okay necessary 2 Ensure ignition is off off selector switch from console poor terminal contact switch Brown Green and Black wires to step 4 vo vo ltage 3 necessary Brown Green wire If zero voltage is present ltage is present check Brown Green wire for a shor Check TCM connector for poor terminal con If TCM connector is okay Using a screwdriver carefully pry Check wires at back of switch for Repair as necessary check Black ground wire for good terminal contact If Bla
43. ime is not as described check transaxle line pressure 5 HYDRAULIC PRESSURE TEST SHIFT SPEED SPECIFICATIONS SHIFT SPEED SPECIFICATIONS 2 3L TURBO 1 Application MPH Economy Mode Beata ER 25 rr 51 eerte teen ike 76 JUh Srdy 53 Srd 2 d 94 el eee Ree eus emus es M ie oe 31 IE Ree PRG ee te lalate 16 Sport Mode mue qr 36 2Hnd 3E d d e Vet lee VR S E m ee 69 SrO c4Ll meeue eines Satis Es 106 3 2 1 Pd 2nd Aedes e p e re en 47 HAFIST 26 With shift lever in D position and throttle valve open 60 percent SHIFT SPEED SPECIFICATIONS 2 4L NON TURBO 1 Application MPH Economy Mode DStc2nngdo rette Tae e M 24 AMORA BL sich entice bus piede PL Tortue De Aue 48 Srd 4bh y e err Ee grece in Te gie owe 75 4Ul 3rd qxuudenc aes eit eters rc Du P er EE due 60 deme
44. inals No 20 and 48 Shift transmission to D so front wheels begin to rotate Increas ngine speed to 1800 2000 RPM If DVOM displays a stable Hz reading when engine speed is constant go to step 8 If DVOM does not display a stable Hz reading when engine speed is constant go to next step 6 Replace VSS Connect DVOM between measuring unit terminals No 20 and 48 Shift transmission to D so front wheels begin to rotate Increas ngine speed to 1800 2000 RPM If DVOM displays a stable Hz reading when engine speed is constant system is okay If DVOM does not display a stable Hz reading when engine speed is constant go to next step 7 Ensure ignition is off Ensure wiring between VSS and instrument cluster is not located near sources of interference such as electric motors or spark plugs If wiring is okay replace instrument cluster See appropriate INSTRUMENT PANELS article in ACCESSORIES amp EQUIPMENT 8 Ensure ignition is off Disconnect TCM Connect ohmmeter between measuring unit terminals No 20 and 27 solenoid S1 then between measuring unit terminals No 20 and 28 solenoid S2 If ohmmeter reads 10 15 ohms go to next step If ohmmeter does not read 10 15 ohms check transaxle connector for poor terminal contact Repair as necessary 9 Ensure ignition is off Reconnect TCM Turn ignition on Set gearshift selector to D position Connect voltmeter between measuring unit terminals
45. ion sensor adjustment Ensure gear shift is set to position N Remove battery battery shelf and air intake manifold Remove transmission cable from rod arm Remove selector lever Install gear position Alignment Tool 999 5475 on control shaft If shaft is set correctly to position N indentation on alignment tool should align with mark on gear position sensor If indentation aligns with mark on gear position sensor go to step 3 If indentation does not align with mark go to next step 2 Remove dipstick pipe bracket and gear position sensor Screws Rotate gear position sensor so mark on switch aligns with indentation on tool Tighten sensor screws to 37 ft lbs 25 N m To complete installation reverse removal procedure 3 Ensure ignition is off Connect ohmmeter between gear shift position sensor case and transmission housing If ohmmeter reads about zero ohms go to next step If ohmmeter does not read about zero ohms check gear shift position sensor ground Repair as necessary 4 Ensure ignition is off Check battery voltage at battery and note reading Connect measuring unit to TCM Turn ignition on Check gear position sensor voltage specification by connecting voltmeter between measuring unit terminal No 20 and gear position sensor terminal See GEAR POSITION SENSOR VOLTAGE SPECIFICATIONS table If voltages are to specification DTC was set because of poor terminal contact in TCM connector Repair as necessary If voltmeter r
46. ivated After testing components system automatically exits test mode No 4 COMPONENT ACTIVATION CODES Component No 1 Shift Solenoid No 2 Shift Solenoid Lock Up Solenoid Drive Compensation 1 Torque Limiting TC2 Torque Limiting TCl Code EG exe UE Revue ua 342 343 Rede led uii e 344 Line Pressure SolenolXq ESSA Oe UE 411 Warning Indicator Um Roe RUD ego 412 MEO EPA xq 414 beans 422 E 423 Basic Code Transmission Rate 2 Times Basic Code Transmission Rate 312 10 Times Basic Code Transmission Rate 313 1 Engine idle speed will change during activation TROUBLE CODE DEFINITION DIAGNOSTIC TROUBLE CODE DEFINITIONDIC OBD II DTC OBD II DTC Warning Light On 1 Fault Repair l327BPQ7 5b0 S25s I ees Yes uenis Short To Voltage In No 1 Shift Solenoid Circuit 113 P0755 iz 2 9 323 uewaenedea uere TCM Fault LIA NO antes Mode Selector Switch Circuit Malfunction 121 0750 iocum Ee Short To Ground In
47. l Volvo System Tester Scan Tool or generic scan tool Volvo Diagnostic Key Scan Tool and Volvo System Tester Scan Tool must be connected to Volvo DLC located in engine compartment Generic scan tool must be connected to DLC located in console in front of gear shift lever See Fig 6 Volvo Self Diagnostic System System is capable of self diagnostic functions through the use of diagnostic unit in engine compartment or manufacturer s scan tool Access to diagnostic system is provided by socket No 1 on diagnostic unit with ignition on See Fig 5 System has 6 test modes Test mode No 1 is used to display and clear codes Test mode No 2 is used to verify operation of system components Test mode No 3 operates components in a certain order Test mode No 4 activates individual components to verify component operation when a specific code is input into diagnostic unit Test mode No 5 reads data values of various sensors Values are for vehicle speed throttle position engine RPM and transaxle oil temperature Test mode No 6 is used to enter data to reset adaptive values for throttle signal and shift speed adjustment function Shift Speed must be reset when transaxle has been replaced NOTE Manufacturer recommends use of scan tool when test modes No 5 and 6 are performed Follow manufacturer s instructions when performing these modes CAUTION After displaying DTCs ignition must be switched off BEF
48. mal replace torque converter If fluid is discolored or has a burnt smell manufacturer recommends replacing transaxle as an assembly HYDRAULIC PRESSURE TEST 1 Ensure transaxle is at normal operating temperature Connect pressure gauge to line pressure test port See Fig 4 2 Connect tachometer to vehicle and ensure it is visible to driver Block all 4 wheels and fully apply parking brake Start engine and ensure idle speed is adjusted properly Idle speed should be 850 RPM 3 Apply service brake and shift transaxle into D position Check line pressure at idle and record pressure reading Accelerate engine to stall speed and record line pressure reading 4 Repeat test procedure in R position If line pressures are not as specified check throttle cable adjustment Adjust throttle cable as necessary and repeat test procedure and record pressure readings Compare all readings to specification See LINE PRESSURE SPECIFICATIONS table INE PRESSURE SPECIFICATIONS D Position R Position Engine Speed psi kg cm psi kg cm Idle Speed usse S RES 85 6 Stalb Speed IVL UAE ted uates Oe 256 18 5 If line pressures are not as specified internal components in transaxle may be malfunctioning Check for Diagnostic Trouble Codes DTCs See SELF DIAGNOSTIC SYSTEM If no DTCs are found manufacturer recommends replaci
49. minal contac connectors between TCM and ECM Also check for an open short ECM provides information to TCM If TCM does not register an incomi on torque ng load when RPM sensor on transmission gives a signal that input shaft En circuit ECM to voltage and TCM If all circuit engine is warm transmi SCROLLING VALUES Load or short circuit to ground in signal S are okay Ssion is in neutral okay replace TCM signal oad signal is not okay connect scan tool to DLC and A C is off should be about 35 wiring between Ensure Select If load signal is replace ECM DTC 141 SHORT CIRCUIT IN OIL TEMPERATURE SENSOR CIRCUIT 1 Check for s next step 2 Ensure igni tion is off If wiring is okay hort circuit to ground in oil temperature sensor signal wiring Repair as necessary go to Disconnect transaxle connector Connect ohmmeter between transaxle connector terminals No 12 Blue Green wire and No 13 Blue Black wire See OIL TEMPERATURE SENSOR RESISTANCE table If resistance is to specification check Blue Green wire for a s hort circuit to ground If resistance is not to Specification replace oil temperature sensor OIL TEMPERATURE SENSOR RESISTANCE F Ohms Qi Oo memor IG eeu ep Cae eee NESS E tbe 1700 2300 6 8 CZ0 1 EE EOD SUE Rs eds 76
50. nal This function checks component operation wiring and connections in each circuit If response code is displayed component and circuit are okay If response code is not displayed TCM has not received a signal Check appropriate component or circuit and repair as necessary 2 This test mode is activated by briefly pressing test button on diagnostic unit 2 times causing LED to rapidly flash TCM will flash a code indicating receipt of a signal from components 3 Activate sensors or switches by operating appropriate component as described in RESPONSE CODE IDENTIFICATION table Diagnostic unit LED should display appropriate response cod NOTE For optimum results components should be activated in order given in RESPONSE CODE IDENTIFICATION table Components may be tested individually if necessary RESPONSE CODE IDENTIFICATION Component Circuit Response amp Position Tested 1 Code Gear Position Sensor VES SDOS PA dido riii eee ere Peck qnem dtes 242 VEN WORT sare tee Sie tae oet Reverse Luce e a bsec 144 RA Neutral 241 ELLOS oos 22446 wee abu 214 DE 224 UN TO TOW yess dishes 234 Position 2222524 2
51. ng transaxle as an assembly Hydraulic Pressure Test Port 95420999 Fig 4 Locating Line Pressure Test Port Courtesy of Volvo Cars of North America ON VEHICLE SERVICE AXLE SHAFTS See appropriate AXLE SHAFTS article in AXLE SHAFTS amp TRANSFER CASES section THROTTLE amp KICKDOWN CABLES For throttle and kickdown cable adjustments see appropriate AUTOMATIC TRANSMISSION SERVICING article in TRANSMISSION SERVICING section REMOVAL amp INSTALLATION TRANSAXLE For transaxle removal and installation procedure see appropriate AUTOMATIC TRANSMISSION REMOVAL article in TRANSMISSION SERVICING section ACCUMULATOR PISTONS amp SPRINGS NOTE Control valve assembly is equipped with 3 accumulator pistons and 6 modulator valves Assembly has 2 cover plates on opposite sides of assembly Removal amp Installation 1 Remove control valve assembly See CONTROL VALVE ASSEMBLY Place control valve assembly on clean workbench Remove gear selector valve S shaped from control valve assembly transaxle side of assembly Remove 6 cover plate bolts cover plate and gasket Remove 2 accumulator pistons and 3 springs and 3 modulator valves and springs Note location and direction of all components during removal Lay all components on workbench exactly as removed from control valve assembly 2 Rotate control valve assembly and remove 6 cover plate bolts cover plat
52. nt mechanical malfunction has occurred Manufacturer recommends replacing transaxle assembly CIRCUIT amp COMPONENT TESTING BRAKE SWITCH 1 Ensure ignition is off Remove sound insulator to gain access to brake switch located at top of brake lever Connect a voltmeter between brake switch terminal No 1 Red wire and a good known ground Battery voltage should be present If battery voltage is not present check for open circuit between terminal No 1 and brake Switch fuse 2 Disconnect brake switch connector Connect an ohmmeter between brake switch terminals No 1 Red wire and 2 Yellow wire With brake pedal released resistance should be infinite With brake pedal depressed resistance should be zero ohms If resistance is not as specified replace brake switch KICKDOWN SWITCH Ensure ignition switch is off Disconnect kickdown switch connector from switch Using a DVOM measure resistance between switch terminals when accelerator pedal is in WOT position Resistance should be zero ohms While slowly releasing accelerator pedal continue to measure resistance Resistance should be infinite in all other pedal positions If kickdown switch does not test as described replac switch MODE SELECTOR SWITCH 1 Ensure ignition switch is off Disconnect mode selector switch from center bracket Disconnect switch connector from switch Using a DVOM measure resistance betwe
53. nt of vehicle Turn ignition on Measure voltage between measuring unit terminals No 20 and 48 Block one front wheel and spin other wheel rapidly If voltmeter reads 4 7 volts DTC was set because of poor terminal contact at TCM or speedometer connector If voltmeter does not read 4 7 volts replace speedometer 3 Ensure ignition is off Check that Vehicle Speed Sensor VSS is securely fastened to transmission Ensure there is no dirt between sensor and mating surfaces all grounds are clean and tig Okay ensure Repair as necessary If VSS is ht Repair as necessary DTC 233 SPEEDOMETER SIGNAL INCORRECT If TCM registers an unusually large variation in speed signal from speedom Splices necessary eter damaged insulation DTC will set Check for loose contact in wiring or or poor terminal contact Repair as DTC 235 HIGH OIL TEMPERATURE 1 testing for C t heck TEMP F ERATURE SENSOR CIRC 2 Disconnect t connector te terminal No step If o nm Remove ransaxle co rminal No 28 If eter does 12 ther DTCs hat DTC first UIT air cleaner housing to access transaxle connector nnector ohmmeter reads infinite resistance not read infinite resistance If DTC 141 is stored perform See DTC 141 SHORT CIRCUIT IN OIL 141 is not stored go to next step Connect ohmmeter between transaxle Blue Green wi
54. o flash note any unusual symptoms in transmission operation or function If transmission does not show any mechanical fault or malfunction go to next step If transmission has a mechanical malfunction and DTC 322 is not reset repair or replace transmission as necessary 2 Turn ignition off Connect measuring unit to TCM Raise and support front of vehicle Turn A C off Idl ngine Set gear selector to position D so front wheels begin to rotate Increase and keep engine speed at 2000 RPM Set DVOM to Hz scale then connect DVOM between measuring unit terminals No 1 and 2 If DVOM gives a stable Hz reading when engine speed is constant and transmission is not shifting go to step 5 If Hz frequency reading shows wide fluctuations go to next step 3 Ensure ignition is off Disconnect TCM Connect ohmmeter between measuring unit terminals No 1 and 2 If ohmmeter does not read 300 600 ohms go to next step If ohmmeter reads 300 600 ohms ensure RPM sensor wiring is not located near sources of interference such as electric motors or spark plugs 4 Disconnect transaxle connector Check TCM connector for poor terminal contact Repair as necessary Reconnect transaxle connector Connect ohmmeter between measuring unit terminals No 1 and 2 If ohmmeter reads about 300 600 ohms DTC was set because of poor contact in transaxle connector If ohmmeter does not read about 300 600 ohms replace RPM sensor 5 Connect DVOM between measuring unit term
55. ock cable is too short Adjust cable as necessary Move shift lever to position other than Park Ignition key should not be removable from ignition switch If key can be removed cable is too long Adjust cable as necessary KICKDOWN SWITCH Kickdown switch located at firewall on accelerator cable sends input signal to TCM when accelerator pedal is fully depressed TCM uses input signal for controlling transaxle downshifting and torque converter lock up MODE SELECTOR SWITCH Mode selector switch located to left of shift lever has 3 different modes which effect transaxle shift points Input signal from mode selector switch is sent to TCM TCM uses input signal for controlling transaxle shifting and torque converter lock up ECON Economy mode is for normal driving and provides early upshifts combined with lock up as often as possible for top 3 gears Transaxle line pressure is modulated to provide smooth gear engagement In SPORT mode transaxle shift points are designed to provide the highest possible performance Under normal acceleration transaxle shifts occur the same as in ECON mode During increased acceleration TCM selects shift and lock up points for best possible performance WINTER mode prevents wheel spin on slippery surfaces Transaxle starts out in high gear When WINTER mode is selected warning light on dash is illuminated This mode may also be used when driver wants to control gear selection OIL TEMPERA
56. oid and transaxle connector terminal No 23 If ohmmeter does not read 10 15 ohms replace lock up solenoid TORQUE SPECIFICATIONS TOROUE SPECIFICATIONS Application Ft Lbs N m Control Arm To Ball Joint Nut New 1 13 18 Drive Shaft use eet Sy BG a 2 89 120 Engine To Transmission Bolt 37 50 Frame Bolt eat bee le ets 1 77 105 Frame Bracket BOW lex ss 37 50 Flexplate To Torque Converter Bolt 22 30 Rear Transmission Engine Mount e 37 50 Roll Bearing Cap BOLE Ree RI 37 50 Steering Gear Nut New 37 50 Torque Rod To Transmission Bolt 3 13 18 1 Tighten an additional 120 degrees 2 Tighten an additional 60 degrees 3 Tighten an additional 90 degrees WIRING DIAGRAM SOCKET 1335 36 L TURDO 1936 2 41 ABOVE GEAR SHIFT LEVER wr23L TURBO ENGINE HOT IN ACC OR RUN HOT IN RUN ORSTART FUSE 1 55 7 ELECTRICAL aerr ENG COMPT FUSE de BA MS NAST AUTOMATIC TRANSMISSION PROGRAM SELECTOR DIAGHOSTIC SOCKET 11955 RIGHT FEOHT CORMER OF ENGINE COMPARTMENT SELI
57. onnected to On Board Diagnostics II OBD II Data Link Connector DLC OBD II DLC is located in center console in front of gear shift lever Using OBD II DLC and scan tool will only output OBD II DTCs and not entire range of DTCs See Figs 5 and 6 On 1995 vehicles on board Volvo diagnostic unit for retrieving codes is located in right front of engine compartment See Fig 32 Diagnostic unit is equipped with an LED indicator activation button and function select cable See Fig 5 Fig 5 Activation Button LED Indicator Function Selector Cable 95E21000 Identifying Diagnostic Unit Components 1995 Vehicles Courtesy of Volvo Cars of North America Data Link Connector _ Center Console 94F46057 Fig 6 Locating Data Link Connector DLC Courtesy of Volvo Cars of North America Diagnostic unit output socket No 1 is used to retrieve TCM diagnostic codes Once function selector cable has been inserted in correct socket depressing button 1 6 times selects from 1 to 6 control system test functions Depress button and keep depressed for more than one second but not more than 3 seconds DTCs stored memory are read by observing diagnostic unit LED flashes Observe LED and count number of flashes to determine DTC If LED does not flash see DIAGNOSTIC UNIT LED DOES NOT FLASH All codes contain 3 digits example 2 1 3 Since all codes have 3 digits each code
58. ransaxle connector Repair as necessary 5 Ensure ignition if off Open control system and disconnect lock up solenoid Connect ohmmeter between lock up solenoid terminal and transmission housing If ohmmeter reads 10 15 ohms check for an open circuit in Brown Black wire between lock up solenoid and transaxle connector terminal No 23 If ohmmeter does not read 10 15 ohms replace lock up solenoid DTC 333 SHORT TO GROUND IN LOCK UP SOLENOID CIRCUIT 1 Turn ignition on Set gearshift lever to P position Check solenoid function by using test mode No 4 or Volvo scan tool See TEST MODE NO 4 If solenoid operates check wiring for an intermittent short circuit If solenoid does not operate go to next step 2 Ensure ignition is off Remove air cleaner housing to access transaxle connector Disconnect transaxle connector Connect ohmmeter between transaxle connector terminal No 23 Brown Black wire and transmission housing If ohmmeter does not read 10 15 ohms go to next step If ohmmeter reads 10 15 ohms check for a short circuit to ground in Brown Black wire between transaxle connector terminal No 23 and TCM connector terminal A9 3 Ensure ignition is off Open control system disconnect lock up solenoid Connect ohmmeter between lock up solenoid terminal and transmission housing If ohmmeter reads 10 15 ohms check for an open circuit in Brown Black wire between lock up solen
59. rcuit in Green White wire 4 Disconnect transaxle connector Connect ohmmeter between transaxle connector terminal No 21 Green White wire and ground If ohmmeter reads 10 15 ohms repair poor terminal contact at TCM connector If ohmmeter does not read 10 15 ohms go to next step 5 Access and disconnect shift solenoid No 1 Connect ohmmeter between pin on solenoid and ground If ohmmeter reads about 10 15 ohms check for short circuit to ground in Green White wire If ohmmeter does not read about 10 15 ohms replace solenoid DTC 123 P0745 SHORT TO VOLTAGE IN LINE PRESSURE SOLENOID STH CIRCUIT 1 Turn ignition on Set gearshift lever to P position Check solenoid function by using test mode No 4 or Volvo scan tool See TEST MODE NO 4 If solenoid operate Violet wire for an intermittent short ci operate go to next step 2 Turn ignition off Connect measuring uni ohmmeter between measuring unit terminal reads 2 6 ohms repair short to voltage control signal wiring is okay replace 2 6 ohms go to next step 3 Remove air cleaner housing t Disconnect transaxle connector Connect connector terminals No 24 Violet wire wire If ohmmeter reads about 2 6 ohms S check Violet White or rcuit If solenoid does not t to TCM Connect S No 22 and 23 If ohmmeter in control signal wiring If TCM If ohmmeter does not read O access transaxle connector ohmmeter between
60. re and measuring unit go to next check Blue Green m wire for a short ci 3 Ensure Connect ohmmeter be rcui igni twee t to ground tion is off Disconnect transaxle connector n transaxle connector terminals No 12 Blue Green SENSOR RESIS Blue Green w Specificatio and No table wire TANCE ire for s n If resistance is to specification hort circuit to ground replace oil temperatur 13 Blue Black wire See OIL TEMPERATURE check If resistance is not to Sensor DTC 245 OPEN OR SHORT IN TORQUE LIMITING CIRCUIT 1 some gear ch sent from TCM to ECM A receipt confirmation signal Signal indicates that torque limiting is taking place to TCM Engine torque anges Torque is reduced to allow smoother shifting in limiting process is controlled by signals is sent from ECM If TCM fails to register a receipt signal after request for torque limiting DIC 245 18 S 2 unit to TCM measuring unit terminal No reads infini et connector te resistance Ensure ignition is off Disconnect TCM Connect measuring ohmmeter between and 34 If ohmmeter ohmmeter does not read Disconnect ECM Connect 20 and No 32 33 go to next step If infinite resistance check wiring between TCM connector terminal B2 Yellow Red wire B3 Yellow Violet wire or B4 Violet wire and respective ECM connector terminal B2 B3 and B4 3
61. reen wire for a short circuit to voltage wire is okay check oil temperature sensor resistance See DTC 141 SHORT CIRCUIT IN OIL TEMPERATURE SENSOR CIRCUIT 5 Turn ignition off Check TCM connector for poor terminal Repair as necessary Connect voltmeter between transaxle I If contact connector terminal No 12 Blue Green wire and ground If voltmeter reads about 5 volts DTC set because of poor contact in TCM connector If voltmeter does not read about 5 volts check Blue Green wire for an open circuit DTC 143 SHORT TO GROUND IN KICKDOWN SWITCH CIRCUIT 1 Check for short circuit to ground in signal wiring between TCM and ECM Connect measuring unit to TCM and another measuring unit to ECM Turn ignition on Connect voltmeter between TCM measuring unit terminal No 20 and ECM measuring unit terminal No 20 non turbo or No 42 turbo 2 If voltage is less than 10 volt check kickdown switch Replace as necessary If voltage is greater than 10 volt check grounds and wiring for poor terminal contact Repair as necessary DTC 211 P0750 TCM FAULT Check voltage drop over signal ground and power ground See DTC 113 TCM FAULT If voltage drop and power ground are okay check voltage supply to TCM If voltage supply to TCM is okay replace TCM DTC 212 P0755 SHORT TO VOLTAGE IN NO 2 SHIFT SOL CIRCUIT Turn ignition on Check solenoid using diagnostic te
62. rminal identification see TCM CONNECTOR TI For TCM connector terminal locati IDENTIFICATION table TCM CONNECTOR TERMINAL IDENTIFICATION ons S ERMINAL Terminal No 1 2 Connector A Component mA qe e E EIE e Eee ie RPM Speed Sensor E IE sedo AOI QUEE T Bel RPM Speed Sensor Ground oM MEER UEM Gear Position Sensor STRA V RUE SIS Eds Gear Position Sensor eS VOS Gear Position Sensor Sane Re adheres oe Oe Gear Position Sensor 4 ape e OE Lock Up Solenoid uo NACH Hr A Battery Power uuu IL RR M Oil Temperature Sensor Oil Temperature Sensor Ground Dorn Signal Ground 22 wwe vp deu E sU ere onere dose ie ers Line Pressure Solenoid ye cb so a ae ae abate dead eps Ene i nS E d ud Line Pressure Solenoid Ground ZU espana ter Oe RR RUE EO acea No 1 Shift Solenoid xev Paese e 2 Shift Solenoid VI SE e SS Power Ground 30 Battery Voltage Via Ignition Switch Connector B De c TEE Torque Limiting EG cantare can ae Torque Limiting ineo Torque Limiting Acknowledge Signal
63. s LED will flash each time component is activated Components will be activated in the following order No 1 Shift Solenoid No 2 Shift Solenoid Torque Converter Lock Up Solenoid Line Pressure Solenoid Warning Indicator Light In Instrument Panel Flashes Fault Indication Signal OBD II Malfunction Indicator Light Torque Limiting Signal Drive Compensation For Idling Torque Limiting Signal TC2 When Engine Idling Torque Limiting Signal TCl When Engine Idling NOTE Engine idle speed will change during drive compensation and TC2 activation Test Mode No 1 Test mode 4 Activating Individual Components No 4 activates individual components to verify operation when a specific code is input into diagnostic unit Components are activated 6 times in sequence Shift lever must be in P or N position a nd vehicle must be stopped Rate of code transmission between TCM and diagnostic unit can be changed to 2 or 10 times the basic rate diagnostic unit LED Doubled rate can be used for reading codes from Highest rate is selected automatically when Volvo Scan tool is used 2 To activa times Enter code for table One digit is e Diagnostic unit LED f te test mode No 4 push diagnostic unit button 4 chosen component See COMPONENT ACTIVATION CODES ntered each time diagnostic unit LED is lit lashes when chosen component is act
64. saxle Housing 9 Transaxle 26 Pin Connector 3 Differential Housing 10 Lock Up Solenoid 4 Transaxle Cil Pan 11 Line Pressure Solenoid 5 Engine Speed RPM Sensor 12 No 1 Shift Solenoid 6 Oil Temperature Sensor 13 No 2 Shift Solenoid 7 Vehicle Speed Sensor 1995 14 Vehicle Speed Sensor 1996 06831642 Fig 2 Locating Transaxle Components Courtesy of Volvo Cars of North America OPERATION BRAKE SWITCH Brake switch is an input device mounted above the brake pedal When brake pedal is applied brake switch delivers an input Signal to the TCM TCM uses input signal to control No 3 solenoid for torque converter lock up ENGINE SPEED RPM SENSOR Electromagnetic RPM sensor mounted in transaxle housing is activated by a toothed impulse wheel Sensor is an input device which delivers an engine RPM signal to the TCM By comparing engine RPM and vehicle speed TCM can determine amount of torque converter slippage GEAR POSITION SENSOR NOT Gear position sensor may also be referred to as neutral safety switch Gear position sensor is an input device mounted on the transaxle manual valve shaft Sensor delivers an input signal to TCM indicating transaxle manual valve gear position KEY INTERLOCK SYSTEM With ignition key in ignition switch place shift lever into P position Ensure ignition key can be installed and removed from ignition switch with ease If key is difficult to remove key interl
65. ss transaxle connector Disconnect transaxle connector Connect ohmmeter between transaxle connector terminal No 21 Green White wire and ground If ohmmeter does not read 10 15 ohms go to next step If ohmmeter reads 10 15 ohms check for short circuit to ground in Green White wire 3 Access and disconnect shift solenoid No 1 Connect ohmmeter between pin on solenoid and ground If ohmmeter reads about 10 15 ohms check for short circuit to ground in Green White wire If ohmmeter does not read about 10 15 ohms replace solenoid DTC 122 P0750 OPEN IN NO 1 SHIFT SOLENOID CIRCUIT 1 Turn ignition on Set gearshift lever to P position Check solenoid function by using test mode No 4 or Volvo scan tool See TEST MODE NO 4 If solenoid operates check Green White wire for an intermittent short circuit If solenoid does not operate go to next step 2 Turn ignition off Connect measuring unit to TCM Connect ohmmeter between measuring unit terminals No 20 and 27 If ohmmeter reads about 10 15 ohms repair poor terminal contact at TCM connector If ohmmeter does not read about 10 15 ohms go to next step 3 Remove air cleaner housing to access transaxle connector Disconnect transaxle connector Connect ohmmeter between transaxle connector terminal No 21 Green White wire and measuring unit terminal No 27 If ohmmeter reads about zero ohms go to next step If ohmmeter does not read about zero ohms check for open ci
66. st mode No 4 or scan tool See TEST MODE NO 4 If solenoid operates fault is intermittent Check for loose wiring If solenoid does not operate check Brown White wire for a short circuit to voltage DTC 213 P0120 THROTTLE POSITION SENSOR SIGNAL TOO HIGH Check throttle position sensor signal See appropriate K SENSOR RANGE CHARTS article in ENGINE PERFORMANCE Repair as necessary If sensor signal is okay check voltage drop over signal ground and power ground See DTC 113 TCM FAULT Repair as necessary DTC 221 P0755 SHORT TO GROUND IN NO 2 SHIFT SOL CIRCUIT 1 Turn ignition on Set gearshift lever to P position Check solenoid function by using test mode No 4 or Volvo scan tool See TEST MODE NO 4 If solenoid operates check wiring for an intermittent short circuit If solenoid does not operate go to next step 2 Turn ignition off Remove air cleaner housing to access transaxle connector Disconnect transaxle connector Connect ohmmeter between transaxle connector terminal No 22 Violet wire and ground If ohmmeter does not read 10 15 ohms go to next step If ohmmeter reads 10 15 ohms check for short circuit to ground in Violet wire 3 Access and disconnect shift solenoid No 2 Connect ohmmeter between pin on solenoid and ground If ohmmeter reads about 10 15 ohms check for short circuit to ground in Violet wire If ohmmeter does not read about 10 15 ohms replace solenoid DT
67. t short circuit If solenoid does not operate check for a short circuit to voltage in wiring between lock up solenoid and TCM connector terminal A9 Repair as necessary DTC 332 OPEN IN LOCK UP SOLENOID CIRCUIT 1 Turn ignition on Set gearshift lever to P position Check solenoid function by using test mode No 4 or Volvo scan tool See TEST MODE NO 4 If solenoid operates check wiring for an intermittent short circuit If solenoid does not operate go to next step 2 Ensure ignition is off Connect measuring unit to connector Connect ohmmeter between measuring unit terminals No 9 and 20 If ohmmeter reads 10 15 ohms DTC was caused by poor terminal contact in TCM connector Repair as necessary If ohmmeter does not read 10 15 ohms go to next step 3 Ensure ignition is off Remove air cleaner housing to access transaxle connector Connect ohmmeter between transaxle connector terminal No 23 and measuring unit terminal No 9 If ohmmeter reads about zero ohms go to next step If ohmmeter does not read about zero ohms check for an open circuit in Brown Black wire between transaxle connector terminal No 23 and TCM terminal A9 4 Ensure ignition is off and transaxle connector is disconnected Connect ohmmeter between transaxle connector terminal No 23 and transmission housing If ohmmeter does not read 10 15 ohms go to next step If ohmmeter reads 10 15 ohms DTC set because of poor terminal contact at t

AUTO TRANS DIAGNOSIS - AW50- 42LE

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