Service Manual
Contents
1. OFF all accessory switches Warm up the engine at 2500 rpm until the radiator fan starts operating one time 4 Turn ON the main switch of the tester Read the output voltage of the oxygen sensor when the engine is idling and the radiator fan is not operating Specified Value The voltage varies repeatedly between a range from a voltage below 0 32 V and to a voltage above 0 58 V See the diagram below 1 V 0 58 V 0 32 V 0 V NO Check of air induction system Check the following items given below Check of the engine oil level gauge oil filler cap and PCV hose for disconnection Check of parts of the air induction system between the cylinder head and the throttle body for disconnection looseness or cracks Go to Step 8 YES Check of fuel pressure Are the check results OK NO Repair or replace induction system YES Check of injector injection Are the check results OK NO Check and repair fuel pump fuel pipe line and filter L21E3766ES48 ES 150 ENGINE CONTROL EFI SYSTEM 3SZ VE K3 VE ves Check of output voltage of oxygen sensor unit Replace the injector 1 Warm up engine completely 2 Disconnect the connector of the oxygen sensor with IG switch turned OFF 3 Conn2. ES 142 THROTTLE POSITION SENSOR 3SZ VE INSPECTION 1 CHECK RESISTANCE ENGINE CONTROL THROTTLE POSITION SENSOR 3SZ VE VTH Throttle Position Sensor A133573J01 a Disconnect the throttle position sensor connector b Using a tester measure the resistance between the throttle position sensor connector terminals Standard Tester Connection Terminal Symbol Throttle Valve Resistance 1 VC 4 5 3 VTH 2 5 to 5 9 kQ 3 VTH gt 2 E2 Fully Closed 0 2 to 5 7 kQ 3 VTH gt 2 E2 Fully open 2 0 to 10 2 kQ ENGINE CONTROL EFI SYSTEM 3SZ VE K3 VE EFI SYSTEM 3SZ VE K3 VE DIAGNOSTIC TROUBLE CODE CHART ES 143 ture sensor DTC No Diagnostic Item Lamp Code Memory See Page P0116 42 Coolant temperature cir o o ES 145 cuit range performance P0133 21 Oxygen sensor circuit o o ES 148 slow response P1115 46 A C outside air tempera o o ES 151 ES 144 ENGINE CONTROL EFI SYSTEM 3SZ VE K3 VE ECU DATA LIST ACTIVE TEST 1 CARB SPECIFIED DATA CHART ECU DATA LIST CHART NOTICE As the data list values may vary widely depending on slight measurement errors the measurement environment or the state of the vehicle due to wear and tear it is very difficult to indicate specific standard reference values Therefore in some cases an error may occur within the range of reference values values F
3. ONTROL COMPUTER COOLER THERMISTOR AMBIENT TEMPERATURE SENSOR a Disconnect the engine control computer connector C A and the connector of cooler thermistor ambient temperature sensor ENGINE CONTROL EFI SYSTEM 3SZ VE K3 VE Engine Control Computer Cooler Thermistor Outside Air Temperature Sensor Vehicle Side Connector ES 153 b Using a tester check whether there is continuity or a short between the engine control computer vehicle side connector C A and the connector terminals of cooler thermistor ambient temperature sensor For terminal layout see page ES 16 Standard Tester Connection Terminal Symbol Engine Control Computer 4 5 Cooler Thermistor ambient tempera ture sensor 129 THG 5 1 Standard There is continuity and no short between the other terminals and body ground 116 E21 4 52 There is continuity and no short between the other terminals and body ground NG gt REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR CHECK AND REPLACE ENGINE CONTROL COMPUTER TO NEXT SECTION
4. computer and the ba feats q u vehicle side connector of the coolant temperature sensor For BE ea a a terminal layout see page ES 16 ba NY Standard Tester Connection Terminal Symbol Engine control computer 4 5 Standard THW Coolant temperature There is continuity and no short 54 THW lt gt 2 between other terminals and body ground E F I Coolant Temperature Vehicle Side Connector There is continuity and no short between other terminals 19 E2 4 5 1 REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR A133552J01 CHECK AND REPLACE ENGINE CONTROL COMPUTER ES 148 ENGINE CONTROL EFI SYSTEM 3SZ VE K3 VE P0133 21 OXYGEN SENSOR CIRCUIT SLOW RESPONSE BANK1 SENSOR 1 1 WIRING DIAGRAM Refer to DTC P0130 21 Oxygen sensor circuit malfunction 2 CIRCUIT DESCRIPTION Refer to DTC P0130 21 Oxygen sensor circuit malfunction 3 DTC DETECTING CONDITION Response time for heated oxygen sensor voltage output to change from rich to lean or from lean to rich is more than certain length of time during idling after engine is warmed up 4 TROUBLE AREA 1 Air induction system 2 Fuel pressure 3 Injector 4 Open wire or short circuit in the oxygen sensor circuit 5 POINT OF INSPECTION 1 Is the signal from the oxygen sensor inputted to the ECU proper 2 Is the harness between the oxygen sensor and the ECU proper 3 Is th
5. dition Suspected Area Malfunction Time Other IG ON Coolant temperature malfunction e Wire harness or connector When engine speed operates at more than 1000r min continues Coolant temperature more than 10 minutes Engine control computer 4 1 trip DTC No ON gt r PON gt P0116 42 CIRCUIT DIAGRAM Engine Control Computer Coolant Temperature THW E2 Y G100102J25 INSPECTION PROCEDURE HINT e Read the freeze frame data using the DS Il Freeze frame data records aspects of the engine s condition when malfunctions occur This information is helpful when troubleshooting ca READ DS Il DATA COOLANT TEMPERATURE a Connect the DS II to the DLC b Read the engine coolant temperature displayed on the DS II while the ignition switch is turned to the ON position and the engine is stopped Result Tester Display Proceed to 40 C A 120 C B Equivalent to actual coolant temperature C ES 146 ENGINE CONTROL EFI SYSTEM 3SZ VE K3 VE ce gt CHECK FOR INTERMITTENT PROBLEMS e READ DS II DATA INSPECT WIRE HARNESS OPEN CIRCUIT SST 09843 18020 a Disconnect the connector of the coolant temperature sensor Short the circuit between terminals 2 and 1 of the water temperature vehicle side connector using the SST diagnosis check wire No 2 c Connect the DS II to the DLC d Turn the ignition switch to the ON position 12 i e Read the
6. e output of oxygen sensor proper 4 Are there the open wire or short circuit for the oxygen sensor heater circuit 6 INSPECTION PROCEDURE Read the freeze frame data using the DS 21 diagnosis tester or OBD generic scan tool Because the freeze frame data records the engine conditions when the malfunction was detected when troubleshooting the freeze frame data is useful to deter mine whether the vehicle was running or stopped the engine warmed up or not the air fuel ratio lean or rich etc at the time of the malfunction Are other codes those other than DTC P0130 21 outputted t NO YES 2 Check of harness between oxygen sensor Go to the relative DTC chart and ECU 1 With the IG switch turned OFF set the SST sub harness However the SST connectors at the ECU side disconnected 2 Disconnect the oxygen sensor connector 3 Check the harness and connector for open wire or short Are the check results for open wire and short between the connector X28 of the oxygen sensor at the harness side and the SST terminal 123 OK L21E3765ES20 ENGINE CONTROL EFI SYSTEM 3SZ VE K3 VE YES INO ES 149 Check of output voltage of oxygen sensor during idling Repair or replace the harness or connector 1 Connect the oxygen sensor and SST connectors respectively 2 Connect the DS II diagnosis tester to DLC 3 Turn
7. ect a voltmeter to the connector terminal of oxygen sensor 4 Hold the engine racing speed for 3 minutes at 2000 rpm at this time ensure that the reading of the volt meter is within the specified value Specified Value Does the voltmeter exhibit an output voltage of 0 2 V or more at least one time Are the check results OK sensor y NO Replace the oxygen sensor Bank 1 sensor 1 YES Check or replace the engine ECU Perform confirmation engine racing pattern Refer to DTC P0130 21 chart Y Is there DTC P0133 21 being output again YES Ino Check or replace ECU Check malfunction that occurs intermittently or poor contact L21E3767ES40 ENGINE CONTROL EFI SYSTEM 3SZ VE K3 VE ES 151 DTC P1115 46 A C OUTSIDE AIR TEMPERATURE SENSOR DESCRIPTION The resistance of the cooler thermistor ambient temperature sensor changes in accordance with the ambient temperature As the temperature decreases the resistance increases As the temperature increases the resistance decreases DTC Detection Condition 1 Diagnosis Condition DTC No 2 Malfunction Condition Suspected Area 3 Malfunction Time 4 Other 1 IGON 2 Open or short in cooler thermistor ambient tempera Cooler thermistor ambient temperature sensor P1115 46 ture sensor circuit e Wire harness or connector 3 Conti
8. engine coolant temperature displayed on the DS II Standard 120 C illic REPLACE COOLANT TEMPERATURE Coolant Temperature Vehicle Side Connector SENSOR 3 READ DS Il DATA CHECK FOR OPEN IN ENGINE CONTROL COMPUTER SST 09843 18020 a Short the circuit between terminals 54 THW and 19 E2 of the engine control computer using the SST diagnosis check wire Engine Control Computer No 2 For terminal layout see page ES 16 paan b Read the engine coolant temperature displayed on the DS II o HOH Standard Ela 120 C 7 KG Y CHECK AND REPLACE ENGINE CONTROL E2 THW COMPUTER A133549J02 KU READ DS II DATA INSPECT WIRE HARNESS SHORT CIRCUIT a Disconnect the connector of the coolant temperature sensor b Turn the ignition switch to the ON position c Read the engine coolant temperature displayed on the DS II Standard 40 C REPLACE COOLANT TEMPERATURE SENSOR ES 147 ENGINE CONTROL EFI SYSTEM 3SZ VE K3 VE CHECK WIRE HARNESS AND CONNECTOR ENGINE CONTROL COMPUTER COOLANT TEMPERATURE a Disconnect connector B of the engine control computer and the connector of the coolant temperature sensor b Using a tester check whether there is continuity or a short between PA Engine Control Computer as the vehicle side connector or the engine control
9. nuously for 0 5 seconds or more Engine control computer 4 1 trip CIRCUIT DIAGRAM Engine Control Computer Cooler Thermistor Outside Air Temperature Sensor A134276J01 INSPECTION PROCEDURE Di CHECK COOLER THERMISTOR AMBIENT TEMPERATURE SENSOR a Disconnect the connector of cooler thermistor ambient temperature sensor ES 152 ENGINE CONTROL EFI SYSTEM 3SZ VE K3 VE b Using a tester check the resistance between terminals 1 and 2 of the connector of cooler thermistor ambient temperature sensor Sensor Standard EN Temperature Standard dam J 10 C 3 00 to 3 73 kQ 15 C 2 45 to 2 88 kQ PH 20 C 1 95 to 2 30 kQ Resistance k2 25 C 1 60 to 1 80 kQ 40 30 C 1 28 to 1 47 kQ 35 35 C 1 00 to 1 22 kQ 40 C 0 80 to 1 00 kQ ea 45 C 0 65 to 0 85 kQ 25 50 C 0 50 to 0 70 ka 2 0 55 C 0 44 to 0 60 kO 15 60 C 0 36 to 0 50 kQ 1 0 NOTICE 0 5 e If you touch the temperature sensor with your hand you 00 i i i i body temperature will confuse the measurement Therefore 10 20 30 40 50 60 make sure to hold the connector side when performing the Temperature C measurements e Wait until the sensor adjusts to a stable ambient temperature before performing the inspection NG gt REPLACE COOLER THERMISTOR AMBIENT TEMPERATURE SENSOR INSPECT WIRE HARNESS AND CONNECTOR ENGINE C
10. or delicate symptoms such as stumbling rough idle obtain and compare multiple test data using the same vehicle under the same conditions and determine problems wholistically by considering all suspected items on the data list Item Shorted Item Short term fuel trim bank 1 Item Description Indicates front O2 sen sor feedback trim factor Inspection Condition Reference Value Problem Area 2500r min 20 to 20 OX1 voltage TFAK Displayed range 0 to 2 SHRTET Displayed range 100 Constant engine speed to 99 2 Indicates rear O2 sen Long term fuel trim bank 1 sor feedback trim factor 2500r min 16 t016 OX2 Voltage LONGFT Displayed range 100 Constant engine speed 2 to 99 2 Intake system Total fuel trim bank 1 Indicates total fuel trim 2500 r min ni systemi 0 5 1 4 Ignition system Constant engine speed Exhaust system Control system Power steering si ST e Indicates pow i input Ting Steering wheel i fed OF gt turned EP age 2 ACTIVE TEST Condition All VSV for purge control are Constraint Condition ENGINE CONTROL EFI SYSTEM 3SZ VE K3 VE ES 145 P0116 42 COOLANT TEMPERATURE CIRCUIT RANGE PERFORMANCE DESCRIPTION The resistance of the thermistor built into the coolant temperature sensor varies according to the coolant temperature DTC Detection Condition Diagnosis Condition Malfunction Con
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