Assembly Instructions of GAS TECH 700/BASIC GT
Contents
1. OSEE O PINK 12V ANE GREEN petrol ECU injector 1 GREEN BLACK Injector 1 VIOLET petrol ECU injector 2 3 ei 228 12 6B VIOLET BLACK Injector 2 WHITE petrol ECU injector 3 w WHITE BLACK Injector 3 5 i i i PINK 12V Injector 3 5 PETROL INJECTORS 1 3 TO ATMOSPHERE GAS DISTRIBUTOR 2 UH Soe A TO DISTRIBUTOR 1 1 WHITE RED 5V_OUT 3 BROWN WHITE MAP2 4 BLACK GND 5 WHITE BLUE Injector CNG 7 PETROL ECU ZK mm 1 3 2 1 To cyl 6 Tocyl 5 Tocyl 4 GAS INJECTORS 4 6 Ww E I i QO TT ra YELLOW MARKER cidh 17 GREEN CNG_LEVEL ee aC ja 2 VIOLET BLUE injector CNG 6 3 RED Injectors supply 6 GREY BLUE Injector CNG 8 1 GREEN BLUE Injector CNG 5 4 RED Injectors supply PINK 12 GAS LEVEL SENSOR BLUE petrol ECU injector 4 BLUE WHITE Injector 4 RED petrol ECU injector 5 m a a u 5 a 4 a RED WHITE Injector 5 BROWN petrol ECU injector 6 ORANGE BROWN WHITE Injector 6 TEMP_R BLUE EZ_CNG PETROL INJECTORS 4 6 FUSE 15 A li TEMPERATURE SENSOR REDUCER ELECTROVALVES Fig 3 7 A diagram of electric connections for the CNG GAS TECH 706 gas injection system 6 injectors Electric circuit diagram of the CNG gas injection system 8 cylindres BROWN CONNECTOR GREY CONNECTOR DIAGNOSTIC x N CONNECTOR 5YELLOW DIAG RxD SENT u Fut2. I I I I I I FUSE I 10 A I TEMPERATURE I SENSOR REDUCER TO MANIFOLD i ELECTROVALVE I I p I A S 5 gt lt l iu l 3 W I gt I m I I MULTIVALVE 1 2 PRESSURE MEASUREMENT TO REDUCER GREEN injector LPG 1 VIOLET Injector LPG 2 3 RED Injectors supply 4 RED Injectors supply 5 WHITE Injector LPG 3 6 GREY Injector LPG 4 4 3 2 1 GAS INJECTORS PETROL ECU PINK 12V Cie O La GREEN petrol ECU Injector 1 GREEN BLACK Injector 1 VIOLET petrol ECU Injector 2 VIOLET BLACK Injector 2 WHITE petrol ECU Injector 3 WHITE BLACK injector 3 GREY petrol ECU Injector 4 GREY BLACK Injector 4 PINK Positive from Injector 4 PETROL INJECTORS CENTRAL UNIT 1 BLACK GND 2 WHITE BLACK SWITCH_IN 3 RED WHITE 5V_OUT 4 GREEN BLACK SWITCH OUT Fig 3 2 A diagram of electric connections for the LPG GAS TECH 704 injection system 4 injectors Electric circuit diagram of the LPG gas injection system GT 706S 6 injectors BROWN CONNECTOR GREY CONNECTOR DIAGNOSTIC CONNECTOR 5 YELLOW DIAG_RXD ND gt 3 6 BLACK EH PRO RAT all 8 RED YELLOW DIAG TxD BLACK GND ld VEHICLE GROUND RED V_BAT BATTERY 12V GAS DISTRIBUTOR 1 PETROL ECU PRESSURE SENSOR TO ATMOSPHERE i mm PRESSURE TO FILTER 1 WHITE RED 5V_OUT 3 BROWN WHITE MAP2 4 BLACK GND
3. Injector CNG 1 2 VIOLET Injector CNG 2 3 RED Injectors supply 4 RED Injectors supply 5 WHITE Injector CNG 3 6 GREY Injector CNG 4 N U PRESSURE TO PRESSURE REDUCER MEASUREMENT L 1 To cyl To cyl To cyl To cyl 4 3 2 1 GAS INJECTORS 14 TO ATMOSPHERE gt ITI VACUUM PETROL ECU o X PINK 12V u GREEN petrol ECU injector 1 x GREEN BLACK Injector 1 GAS LEVEL u VIOLET petrol ECU injector 2 SENSOR all VIOLET BLACK Injector 2 FUSE 10A r WHITE petrol ECU injector 3 WHITE BLACK Injector 3 i GREY petrol ECU injector 4 T GREY BLACK Injector 4 9 PINK Positive from injector 4 g i PETROL INJECTORS TEMPERATURE SENSOR REDUCER ELECTROVALVES Fig 3 5 A diagram of electric connections for the CNG BASIC GT gas injection system 4 injectors Assembly instructions f Paeis Electric circuit diagram of the CNG gas injection system 4 cylindres GREY CONNECTOR BROWN CONNECTOR DIAGNOSTIC CONNECTOR po 5 YELLOW DIAG_RxD a 6 BLACK GND VOTE 7 PINK aan 8 RED YELLOW DIAG_TxD BLACK GND I 10A 12V VEHICLE GROUND BATTERY TO PRESSURE SENSOR OF ECU BROWN RPM_CRANK_DG TO REDUCER za N x A Og T mi NA gsr vile S z O YELLOW RED TEMP CNG oo 3 1 GREEN injector CNG 1 GASLEVEL GREEN CNG_LEVEL 2 VIOLET Injector CNG 2 SENSOR 3 RED injectors supply 4 RED Injectors supply
4. TO REDUCER PRESSURE SENSOR N BROWN RPM a do not connect VIOLET O D N lt Q m lt mal Li EEEL bl G G Arie U U U 3 2 1 Basses z To oyl 3 To oyl 2 Tocyl 1 Scoctbtoo ala S LLST GAS INJECTORS 1 3 ER PINK 12V O lu u s x GREEN petrol ECU injector 1 sreo GREEN BLACK Injector 1 VIOLET petrol ECU injector 2 1 2 el 1 la VIOLET BLACK Injector 2 WHITE petrol ECU injector 3 WHITE BLACK Injector 3 PINK 12V Injector 3 PETROL INJECTORS 1 3 GAS DISTRIBUTOR 2 e a Se e li U u u d a sI a oe ge Ji Gg CENTRAL UNIT 1 BLACK GND S8ss55 x PETROL ECU 2 WHITE BLACK SWITCH IN D O 2 80 o se 3 2 1 3 RED WHITE 5V_OUT se 232 se a a s s aki 4 GREEN BLACK SWITCH_OUT 2 2 u F a s 2 To cyl 6 To cyl 5 To cyl 4 4 IIgs ID U a m m m EERTE GAS INJECTORS 4 6 ot oe a w O m w OSZ NO TOO PINK 12V BLUE petrol ECU injector 4 BLUE WHITE Injector 4 RED petro ECU injector 5 RED WHITE Injector 5 BROWN petrol ECU injector 6 BROWN WHITE Injector 6 PETROL INJECTORS 4 6 GREEN LPG_LEVEL GAS RESERVE _ SENSOR FUSE7 5A GAS LEVEL u SENSOR TEMPERATURE SENSOR 7 ELECTROVALVES ine TO MANIFOLD Fig 3 3 A diagram of electric connections for the LPG GAS TECH 706 gas injection system 6 injectors Electric circuit diagram of the LPG gas injection system G
5. 12V this voltage can be used for additional external devices Emulator external only for Gt700 oo gt Fuel pump Emulator lt OBD Other external SEEN e device whose current max 2A Adjustment of emulator resistance to the resistance of the petrol injectors The GAS TECH 700 BASIC GT controller has a set of internal emulators with a resistance 10042 which suits petrol injectors witch about 6 Q resistance To adjust the controllers emulators to a different resistance smaller or bigger you have to connect an additional resistance see drawing below or use and external emulator Emulators of such type are offered by the companies PROTEC Digital KME AC Emulator 100 Ohm GT700 H GREEN ECU petrol injection 1 Emulator 50 Ohm GREEN BLACK injection 1 petrol injector GT700 100 Petrol ECU External resistor GREEN ECU petrol injection 1 GREEN BLACK injection 1 Emulator 33 Ohm GT700 petrol injector Petrol EGU External resistor GREEN ECU petrol injection 1 GREEN BLACK injection 1 petrol injector
6. BASIC GT programme The assembly diagram of the system is displayed after pressing the F1 key In the F2 Configuration window gt F2 Engine the following can be set e The type of the oxygen sensor lambda probe see page 9 and 19 e The level of the rotational speed signal RPM see page 8 and 19 e The configuration of the rotational speed measurement choosing the number of cylinder and coils for getting the correct RPM reading e The type of injection system of the petrol engine see page e Engine s cubic capacity e Turbo charging of the engine NOTE For a vehicle with a fuel semi sequential or simultaneous injection the signal of RPM rotational speed should be directly taken from the engine speed indicator In this case the connection of the RPM conduit with the induction coil may result in incorrect operation of the gas supply system CONFIGURATION Connection Reducer ISSE COM10 z z j Reducer temperature sensor type KTY83 110 v OBD type OBD mode Md100 Pressure sensor to atmosphere OBD port OBD log RPM Number of cylinders Engine Injection type Sequential Por OLS as O signal from rev counter rx P M x1000 4 Displacement cm3 1 800 Gas level sensor Sensor type Hallotron z Petrol injectors plus control Turbocha rge d 0 190 165 ico lt Injector Injection type Dti3 Display filter Buzzer Anticipates injecti on sequence jo Enable buzzer when G
7. a sub window is displayed IMPORTANT 1 All the values given in the assembly instruction of configuration parameters are demonstration values only Their precise value differs in various models types and even the parts of the same vehicle engine Their optimal values among many other things depend on the capacity or the stage of the engine s consumption and need to be set individually for each car 2 The images illustrating the functioning of the program may differ from the delivered program due to the version The status of the controller connection is displayed in the program main window as the text string Connected when establishing communication or as An error of the COM port in the case of failure The connection status is symbolized in particular windows by the colour of the bottom bar background on which the values of the engine operation parameters are displayed The blue colour means Connected status while the grey colour stands for Connecting status The same thing concerns a connection with the board diagnostic OBD II EOBD The computer programme automatically retries to connect which can be set in the Options window A connection status with the OBD II EOBD system 1s displayed in the programme s main window as Connected when communication 1s established or as Disconnected in the case of failure A connection with the OBD II EOBD system is established via an OBD diagnostic conne
8. b j injection conduits 13 petrol direction tee FAR DA PTT injectors EG1 and EG2 gas Air filter electrovalves P petrol pump Figure 2 1 Block diagram of the connections of gas flow controller The controller 1s equipped with an injection emulator During the engine supply with propane butane it is necessary to switch off petrol injectors so that they do not inject petrol During the engine s petrol operation electric impulses of the injection generated by the petrol controller should reach the injectors without any obstacles The operation of the injection emulator does not only consist in electric disconnection of injectors Diagnostic procedures saved in the petrol controller are capable of detecting the lack of injectors resistance In order to prevent it a substitute circuit 1s formed The change of fuel type from petrol to propane butane gas takes place upon the driver s request after pressing the button in the central unit 7 After reaching the assumed working conditions expressed mainly by the rotational speed and thermal state of the gas system by the engine the gas controller switches off the petrol supply gas electrovalves EG and G2 are opened and electrovalves situated in the gas injectors 0 begin to be controlled Limiting conditions of the engine s operation required to change the fuel type are set during the procedure of system control calibration The GAS TECH 700 BASIC GT computer prog
9. injector 5 x Oww BLUE WHITE Injector 5 gt rr 0 RED petrol ECU injector 6 owo RED WHITE Injector 6 BROWN petrol ECU injector 7 O 8 i BROWN WHITE Injector 7 BLACK petrol ECU injector 8 BLACK WHITE Injector 8 aaa is nn PETROL INJECTORS 5 8 2 GAS RESERVE p A SENSO L GAS LEVEL ERA 7 SENSOR TEMPERATURE SENSOR REDUCER ELECTROVALVES TO MANIFOLD Fig 3 4 A diagram of electric connections for the LPG GAS TECH 708 injection system 8 injectors Assembly instructions EV Electric circuit diagram of the CNG gas injection system GTS BASIC 4 cylindres O 8 o 0 8 02 0 0 0 0 CD 2 3 4 5 6 8 9 10 11 12 2 3 4 1 7 1 INJ_3 OUT INJ_2ECU INJ_2INJ JINJ_1ECU INJ_4INJ INJ 3ECU Press CNG PETROL OUT CNG CNG CNG v BAT V_ PETROL PETROL PETROL TEMP CNG Relay0 DIAG V DIAG_ INJ_4 INJ 1 INJ 2 OUT BAT ind lina sec ins INT R level RxD BAT TxD 13 14 15 16 17 18 19 20 21 22 23 24 5 6 7 8 0 8 820 8 06 06 06 0 I 0 0 0 SER eee eee NA U DIAGNOSTIC CONNECTOR TO EXCHANGE FOR CENTRAL UNIT 5 YELLOW DIAG_RxD 6 BLACK GND 7 PINK V_BAT 8 RED YELLOW DIAG_TxD BLACK GND bl FUSE RED V BAT VEHILCE T z 10A CENTRAL UNIT GROUND 12V 1 BLACK GND 2 WHITE BLACK SWITCH IN 3 RED WHITE 45V OUT 4 GREEN BLACK SWITCH OUT BROWN RPM YELLOW RED TEMP CNG 1 GREEN
10. petrol injector in the whole work value The correction of this value can be made by writing from 3 to 3 units according to individual needs In is assumed that the basic characteristic of the injectors are enough The above correction should be made only when the car do not work stable on idle and the correction on the correction value map gives no results At the end you have to save the data in the ECU with help of the DATA exchange window The emergency password m T D T GasSystem m Mu 20 133 Lublin Qas system ul Lubartowska 71a pi Poland tel fax 48 81 7443810 fax 48 81 7479015 biuro dtgas pl www dtgas pl serwis dtgas pl Enter ECU password nin F1 Scanlool Software version build 2 22 52 F7 Capture to file Phase 0 00 00 00 Connecting to ECU COM2 OBD Status unavailable To do that 1 Select I forgot the password bookmark in the Enter the ECU password window 2 Press the Generate the key button 3 The programme will generate an emergency code which must be memorized 4 A one time emergency password based on the generated code may be obtained from the Customer Service Office or from the Manufacturer s website 5 The emergency password obtained allows the user to gain emergency entry to the system 9 SYSTEM SERVICE GAS TECH 700 BASIC GT controller periodical inspection and regulation according to the guaranty book Software updating T
11. 5 BLACK GND SE 7 PINK V BAT 12V 8 RED YELLOW DIAG_TxD CENTRAL UNIT AN FUSE 10A RED V_BAT I I VEHICLE GROUND 12V 1 BLACK GND 2 WHITE BLACK SWITCH_IN 3 RED WHITE 5V_OUT 4 GREEN BLACK SWITCH_OUT BROWN RPM PRESSURE MEASUREMENT ku REDUCER A god me gt f o av ie a OO FE0 6 To cyl To cyl To cyl To cyl se EEEH 4 PETROLECU _ IJECTORS 1 3 m HIHI i GAS INJECTORS 1 3 as syst AE Fr ussu z GREEN petrol ECU injector 1 Wooo lt GREEN BLACK injector 1 O EE VIOLET petrol ECU injector 2 norma U VIOLET BLACK Injector 2 WHITE petrol ECU injector 3 WHITE BLACK Injector 3 PINK 12V Injector 3 PETROL INJECTORS 1 3 PRESSURE SENSOR 4 W TO ATMOSPHERE Lu Bo Ne TO DISTRIBUTOR o gt 1 WHITE RED H5V OUT 3 BROWN WHITE MAP2 ane e ZN 4 BLACK GND oo o 66 22 O 552559 To cyl To cyl Tocyl To cyl i Szasa SE PF CEU 5 T ee55 He uu g bus PETROL ECU GAS INJECTORS 4 6 6653 Q 3318825 s a a a PINK 12V Ten vj GREEN CNG_LEVEL ZA 229 g Z 6 U U U BLUE petrol ECU injector 4 uu E x BLUE WHITE Injector 4 usno ii O T RED petrol ECU injector 5 SENSOR 6 gt e e gt g a K RED WHITE injector 5 i BROWN petrol ECU injector 6 BROWN WHITE Injector 6 FUSE 15 A E 8 ja l PETROL INJECTORS 4 6 TEMPERATURE SENSOR REDUCER ELECTROVALVES Fig 3 8 A diag
12. 5 WHITE injector CNG 3 6 GREY injector CNG 4 4 3 2 4 GAS INJECTORS ORANGE TEMP_R PINK 12V a GREEN petrol ECU Injector 1 2 GREEN BLACK Injector 1 VIOLET petrol ECU Injector 2 VIOLET BLACK Injector 2 WHITE petrol ECU Injector 3 WHITE BLACK injector 3 GREY petrol ECU Injector 4 GREY BLACK Injector 4 4 s 3 s 2 s 1 A PINK Positive from Injector 4 l PETROL INJECTORS TEMPERATURE SENSOR CENTRAL UNIT REDUCER Fe 1 BLACK GND F i s 2 WHITE BLACK SWITCH IN 3 RED WHITE 15V OUT 4 GREEN BLACK SWITCH OUT FUSE 15A at Ja ELECTROVALVES Fig 3 6 A diagram of electric connections for the CNG GAS TECH 704 gas injection system 4 injectors Electric circuit diagram of the CNG gas injection system 6 cylindres BROWN CONNECTOR GREY CONNECTOR DIAGNOSTIC CONNECTOR 5 YELLOW DIAG_RxD nm 6 BLACK GND a 7 PINK V BAT 12V 8 RED YELLOW DIAG_TxD CENTRAL UNIT lt MAG anis BLACK GND 2 WHITE BLACK SWITCH_IN FUSE 4 GREEN BLACK SWITCH OUT 10A dl VEHICLE RED V_BA p BaN GROUND YELLOW RED TEMP_CNG BROWN RPM A PRESSURE IN O TO REDUCER MEASUREMENT O 5 GAS DISTRIBUTOR 1 U Zc JE GRCI mag ase zo O 3 i la la ilg NY q NG ve Ney de OOBBJO PETROL ECU U u sea a oO 1 SO 550 6 ga u 2 3 2 1 SHE a oo FEFFE se e u To cyl 3 Tocyl 2 Tocyl 1 LEETE GAS INJECTORS 1 3 toot U
13. D T Gas System General Partnership 20 123 Lublin Mm I ul Lubartowska 71a gas system tel fax 48 81 744 38 10 e mail export ddtgas pl em serwis dtgas pl Assembly Instructions of GAS TECH 700 BASIC GT gas injection control systems January 2010 Lublin IMPORTANT The manufacturer does not bear any responsibility for using the device not in accordance with the service manual The service manual is an integral part of a device and is handed on to its users It is forbidden to introduce any changes to GAS TECH 700 BASIC GT which may result in losing guarantee rights Opening of the controller casing or damage of the lead guarantee seal will result in the loss of guarantee rights IMPORTANT The controller should be mounted S AWAY from EXCESSIVE HEAT SOURCES N AWAY from IGNITION WIRE Perform good electrical connection OS After removing the fuse system enters the gasoline supply Do not open during operation of the system IMPORTANT The ECU should be mounted with the electric wire pointing down INCORRECT INCORRECT CORRECT gt IB Electric wires must be well insulated and connectors and conductors secured along their whole length against insulation damage First rate electric soldered connectors ought to be used Injectors and feeding cables should not be assembled near any electromagnetic interference sources The company bears no responsibility for any da
14. Injector LPG 3 6 GREY Injector LPG 4 N U PRESSURE TO PRESSURE REDUCER MEASUREMENT 11 33 A 1 RED WHITE 5V_OUT 3 BROWN WHITE MAP2 4 BLACK GND 4 3 2 1 To cyl To cyl To cyl To cyl 4 3 2 1 GREEN LPG_LEVEL GAS INJECTORS 14 TO ATMOSPHERE gt VACUUM PETROL ECU E PINK 12V Cige I Cs GREEN petrol ECU injector 1 GREEN BLACK Injector 1 VIOLET petrol ECU injector 2 VIOLET BLACK Injector 2 GAS LEVEL SENSOR BLUE RELAY0 x WHITE petrol ECU injector 3 I FUSE 10A WHITE BLACK injector 3 LI GREY petrol ECU injector 4 das 2 1e GREY BLACK Injector 4 o i ci i bi PINK Positive from injector 4 PETROL INJECTORS 1 4 TEMPERATURE 2 SENSOR REDUCER MULTIVALVE ELECTROVALVES TO MANIFOLD Fig 3 1 A diagram of electric connections for the LPG BASIC GT injection system 4 injectors Assembly instructions pra Electric circuit diagram of the LPG gas injection system 4 cylindres GREY CONNECTOR BROWN CONNECTOR DIAGNOSTIC CONNECTOR Ko 5 YELLOW DIAG RXxD 1 i 6 BLACK GND SINE su pre i _BAT 8 RED YELLOW DIAG_TxD BLACK GND FUSE I l 10A VEHICLE BATTERY M BROWN RPM_CRANK_DG D T so gas system GAS LEVEL SENSOR LAMBDA SENSOR do not connect VIOLET GREEN LPG_LEVEL For version with electronic sensor ORANGE TEMP_R I I
15. T 7085 8 injectors BROWN CONNECTOR GREY CONNECTOR DIAGNOSTIC CONNECTOR IL 5YELLOW DIAG RxD F 6 BLACK GND OL 7 PINK V BAT 12V 8 RED YELLOW DIAG TxD JI BLACK GND d VEHILCE GROUND 10A RED V_BAT LU 2 X 12V PRESSURE 2 ND SENSOR nE TO ATMOSPHERE GAS DISTRIBUTOR 1 TO FILTER _ 1 RED WHITE 5V_OUT 3 BROWN WHITE MAP2 4 BLACK GND N BROWN RPM a La La Ya Ys Yo Ti To cyl 4 To cyl 3 Tocyl 2 To cyl 1 GAS INJECTORS 1 4 PETROL ECU do not connect VIOLET WHITE MARKER PINK 12V GREEN petrol ECU injector 1 GREEN BLACK Injector 1 VIOLET petrol ECU injector 2 LAMBDA Sensor 2 VIOLET Injector LPG 2 3 RED Injectors supply 4 RED Injectors supply 5 WHITE Injector LPG 3 6 GREY Injector LPG 4 1 GREEN Injector LPG 1 VIOLET BLACK Injector 2 WHITE petrol ECU injector 3 1 a WHITE BLACK Injector 3 GREY petrol ECU injector 4 8 GREY BLACK Injector 4 PINK Positive from injector 4 PETROL INJECTORS 1 4 GAS DISTRIBUTOR 2 U LT 7 PETROL ECU 4 Xa V2 4 Ta Be DO T ni O U a 55 73 BE SSES Do Tocyl 8 To cyl 7 To cyl 6 To cyl 5 cESesa K a a E A CENTRAL UNIT whe oS x GAS INJECTORS 5 8 1 BLACK GND 25551 s 2 WHITE BLACK SWITCH IN ma Soa 3 RED WHITE 5V_OUT zkocio PINK 12V 4 GREEN BLACK SWITCH OUT Hi e BLUE petrol ECU
16. and activate the function 60 Pre hearing function it is used to pre heat the injectors in winter conditions There are three types of pre heating Week Middle and Strong they depend from the climate Petrol Maximum RPM on gas Gas temperature Reducer temperature Gas pressure Change over time offset Permissible time of RPM cut off on Gas Overlapping time Smooth change over phase period Heating up disabled Inject Petrol Inject Gas Pressure Lambda Lambda 2 1 6 i 2 281 0 00 4 4510 80 0 00 Fig 4 5 Image presents the Calibration gt Switching over window of the GAS TECH 700 BASIC GT programme In the F3 CALIBRATION window gt F8 Map of corrections allows for the system s calibration A full description 1s available in the System Calibration paragraph Pressure Lambda Lambda 2 Fig 4 6 Image presents the Calibration gt Map of corrections window of the GAS TECH 700 BASIC GT programme In the F4 Visualization window the current values of the most crucial quantities characteristic of the engine work are displayed We can switch over petrol gas supply by pressing the central unit s button displayed on the screen IMPORTANT F6 Save to file placed in this window makes it possible to save all major working parameters of gas system to file Make the save during driving The save is active when the field changes color to red When problems with engine work a
17. ar as possible from high voltage conduits Drill holes and screw down brazen ferrules diameter 4mm at the ends of supply manifold near the engine s inlet valves so the gas will flow through them Decline the main axes of the ferrules in the direction of the throttling valve and make an acute angle of about 75 against the collector Connect the pipes with the ferrules of the injector electrovalves using rubber pressure conduits see Table 3 2 The connectors ought to be protected with metal band clamps The length of the rubber conduits which connect injectors with supply manifold should be as short as possible Connect the harness of supply and control conduits of the gas controller terminated in a 6 conduit plug with the injectors In the outlet of the injector you have to mount a nozzle which will adjust the gas flow to the engines demand For choosing the nozzle use table below Table 3 1 Method of selection of gas injectors type f cylinder 1 6 mm 1 5 2 0 without the injector nozzle cylinder 1 6 mm 1 8 2 0 without the injector nozzle O cylinder 1 5 mim 1 5 2 0 without the injector nozzle 4 cylinder 1 5 mm REM 2 0 without the injector nozzle I cylinder 1 5 2 0 without the injector nozzle 2 cylinder Without the injector nozzle Table 3 2 Way of mounting the nozzles injection rail in Pegas and Matrix rails Engine capacity em I Nozzle diameter mm The given table is only for information When after mounting the
18. as level is low Change over to gas Emergency change over to petrol Error has occured Lambda probe type no probe z W Chance over to wait Switch has been pressed Fig 4 2 Image presents the menu of Configuration GAS TECH 700 BASIC GT programme The following parameters can be set up in the F CONFIGURATION you can set e The type of fuel supply LPG or CNG e The type of gas injection rail or injectors Bluetech Valtek Pegas etc e The diameter of a nozzle installed in the injectors e The type of gas reducer temperature sensor Only if a different reducer the standard one was used you can change the factory settings e The connection method of the gas pressure sensor MAP SENSOR in the gas reducer to the supply manifold or to the atmosphere The type of gas level sensor see page 19 Whether the display filter is on or off see page 20 e Conditions for switching the buzzer on 1 e the sound signal of the central unit The F3 CALIBRATION window gt F7 Switching over window it is possible to set the parameters of petrol gas switch over The red column situated on the left corresponds with the parameters responsible for petrol switch over while the green column presents those responsible for gas switch over When the system works correctly do not change the factory settings The function allowed CUT OFF time to RPM when in new cars you cannot find the RPM signal you have to connect to the petrol injector
19. ction via an OBD USB interface available at D T Gas System branches A connection with the system mentioned allows you to obtain information on Short Term Trim and Long Term Trim values of a petrol injection correction previewed in the top right part of the screen in the CALIBRATION and VISUALISATION windows NOTE When a motor vehicle is equipped with a OBD system diagnostic connection a signal with data from that system must be used to carry out the calibration process and also to update the general estimation of the quality of petrol injection control by the petrol controller It is connected with a requirement to have the OBD ELM 327 AMX 530 or OBD MD 100 available at D T Gas System branches The Main Menu window In the MAIN MENU window there are keys used to navigate between different sub windows of the program Additionally in the window are displayed the connection status with the controller and the on board diagnostic system OBD II EOBD as well the version and type of the attached controller 4 6 8 cylinders D T GasSystem 20 133 Lublin OT gas system ul Lubartowska 71a g Poland tel fax 48 81 7443810 fax 4881 7479015 biuro dtgas pl serwis dtgas pl www dtgas pl F1 ScanTool Software version build 2 22 52 F7 Capture to file Language g g Phase 0 00 00 00 Connecting to ECU COM2 OBD Status unavailable Fig 4 1 Image presents the window of the Main Menu GAS TECH 700
20. e the assembly instructions of the hallotron sensor black ground red 12V from electrovalve a green signal Fig 1 A view of the hallotron sensor Hallotron sensor Electrical connector Float Fig 2a Right Lovato valve The turning of the sensor clockwise results in the reduction of the guantity of diodes displayed on the panel while the turning of the sensor anticlockwise results in the increase of the guantity of Hallotron sensor Electrical connector Fig 2b Left Lovato valve The turning of the sensor clockwise results in the increase of the guantity of diodes displayed on the panel while the turning of the sensor anticlockwise results in the reduction of the guantity of diodes displayed diodes displayed on the panel on the panel The connection of gas electrovalves The gas electro valves installed at the gas tank the multivalve and near the gas reducer evaporator should be connected to the gas controller wire lettered E LPG blue The installation of a gaseous phase filter with a distributor The gaseous phase filter is to be installed between the evaporator and the gas injectors according to the flow direction marked on the casing using pressure rubber conduits The connectors ought to be protected with metal band clamps The installation and connection of injectors Install the injectors in the vicinity of the suction manifold and locate it as f
21. ectrovalves closing opening of the gas electrovalve fuel pump switching on switching off petrol injection emulators visualization of the controller s work status in the central unit The most important controlling quantities are the opening times of electrically controlled valves which are placed in the gas injectors 0 Fig 2 1 The amount of gas flowing into each of the engine s cylinders is controlled by a group of two coupled electrovalves The gas injectors are connected with supply manifold of the engine by means of rubber pressure conduits 2 After the valve s opening the gas flows to the manifold via arubber conduit where it is sucked into the combustion chamber by the engine The gas controller sets the valve s opening time in the gas injectors on the basis of the opening times of petrol injectors and correction quantities Its aim is to maintain the composition of the burnt mixture in accordance with the one of the petrol controller The overpressure adjustment of gas which feeds the engine takes place in the reducer evaporator 5 whilst injected stream gas control takes place thanks to the valves placed in the gas injectors 1 engine 2 oxygen sensor in exhaust gas lambda probe 4 throttle 5 gas reducer evaporator 6 pressure sensor 7 central unit 8 gas level sensor 9 gas filter of gaseous phase with a distributor 10 gas injectors Il catalyst 12 gas as flow rr
22. een dots represent LPG 7 On the diagram will be shown a map on petrol red dots and LPG green dots The points have to be similar to themselves 8 The calibration will be ended when be a information Auto calibration ended Do you want to start the test drive with OBD 9 Choosing the No means the end of calibration 10 By choosing the calibration with OBD there are two types of calibration Calibration drive without OBD and with connected OBD interface Calibration drive without OBD system This sort of calibration drive is very use full for calibrating the vehicles without OBD system In order to perform the calibration drive you have to go with the vehicle to a steady part of the road For the proper calibration you have to fulfill two conditions The proper load and RPM The system will give you the information about full filing those conditions with an OK information During the calibration drive a table with the advanced calibration progress will appear On the beginning the system will set points of the combustion map on petrol red dots and next the LPG map green dots On the graphic diagram first will appear points representing the parameters of the petrol map red and next the LPG map green The points should be as close of themselves as possible It has to be highlighted that the calibration program collects the points during the drive You have to avoid rapid throttle movement and often gear changing To de
23. engine rotational speed and so does the blinking frequency of the voltage tester and the frequency of the signal on the oscilloscope screen It 1s advised to take the signal pin from the petrol computer The voltage amplitude value of RPM signal within the 12V limit is defined as a STRONG signal whilst the one within 2 5V is defined as a WEAK signal The RPM wire ought to be put far away from high voltage conductors and any electromagnetic interference sources If the signal is lower than 2 5 V an RPM amplifier must be additionally installed available as an option When you cannot find the RPM signal in new cars you have to try to connect to the petrol injector and activate the function 60 like in the F6 window admissible CUT OFF time to RPM The connection of oxygen sensor s signal lambda probe OPTION do not connect the lambda probe Connect only when problems at calibration appear Never connect the lambda probe by calibration with OBD the signal is shown automatically In order to connect the oxygen sensor with the gas controller the probe s signal wire needs to be found cut and soldered to the controller s wire lettered O2 IN violet Then the gas controller reads the voltage value from the lambda probe and wide range lambda sensor The connection of the tank s gas level sensor The signal wire of the gas level resistance sensor should be soldered to the gas controller s wire lettered LPG LEVEL white se
24. gnal lambda probe 20 The connection of the tank s gas level sensor 20 The connection of gas electrovalves a 21 The installation of a gaseous phase filter with a distributor 21 The installation and connection of injectors 21 The connection of the evaporator temperature sensor 22 The installation and connection of pressure sensor MAP SENSOR 22 The installation and connection of the central unit 23 Power supply CONNEC CHOD pa ana rabe trensa ovdi 23 The installation of fuses a a ee en na En nana 23 4 THE PROGRAMMING AND CONFIGURATION OF THE CONTROLLER 234 A description of the calibration program e 24 The ME Mont Window a a aa stote a A aaa aos oro 23 In the F2 Configuration window gt e nee 25 FO IDI IOM o ea eek po jato od o aaa eia 27 Comec on I AD stege e note otete teta mmen 27 Calibration drive without OBD system 0aaaaa nana kaaa aa kaaa akan nana 32 TRE emercency PASS WON aa osa nissan o o aa o aids aan 34 SED KOT END BERVICE a NE een eee ae 35 Sowar Upda IN O ladino aan ann rada dena 35 Additional external devices ea 36 1 TECHNICAL DATA The most crucial technical data of the gas injecti
25. h the engine supply from petrol to gas which happens at a specific temperature Rotational speed of the engine crankshaft For the estimation of engine crankshaft rotational speed n the gas controller uses the RPM rotational speed signal transferred from the ignition circuit to the petrol controller This is a rectangular wave voltage signal with the frequency dependent on the type of ignition system The central unit The controller controls the gas mixture composition which supplies the engine automatically The driver can only change the type of feeding by switching the central unit The central unit Fig 2 2 installed inside a car acts as a petrol gas switch and the indicator of gas level in the tank and informs about the kind of fuel a car is supplied with The central unit is equipped with e petrol gas switch e six diodes informing about the gas level in the tank e diodes informing about the device s work mode B petrol G gas Figure 2 2 The cabin central unit 1 petrol gas switch B G 2 diodes signalling gas level in the tank 3 diode signalling the petrol supply 4 diode signalling the gas supply The petrol gas switch enables petrol to gas and gas to petrol changeover After pressing the switch the controller is introduced into the mode change of fuel supply Gas to petrol switching and vice versa does not result in an instant change of supply type The controller changes petrol to gas s
26. he ECU is connected to a electricity source all the time It is recommended to save the ECU configurations on your hard drive with the help of GasTech exe program The procedure of actualizing ECU firmware e Connect the PC with the ECU with help of the interface cable e Open the GasTech exe program and choose Programming the ECU in the OPTIONS window or open the DTFash exe program directly e Choose the communication port COM 1 2 e Choose the file to load the file with ep4 extension e Press the Program button Attention The accident procedure when the CPU suspends Sa Disconnect the ECU from the power source disconnect the ECU from the wiring harness disconnect the fuse or disconnect the ECU by the battery 5b Press the Program button Sc Connect the ECU to the power source 2 The programming should end when you see SUCCESS on the screen 3 The ECU 1s ready for work If the programming is not successful repeat actions from point 5 If you do not succeed 1 Take out the main fuse charging the LPG installation 2 Press the Program button 3 Put back the fuse charging the LPG installation see not to cause sparks during 30s from pressing the Program button Additional external devices The GAS TECH 700 BASIC GT the option of connecting additional devices shown on the drawings below It is possible thanks to the free pin on which during work on petrol is OV and during work on LPG
27. he cylinder and protect them against corrosion Drill a 052 ventilation hole through the holes in the cylinder Mount the ventilation ferrule using sheet metal screws Next screw the cylinder down with bolts Screw the multivalve down with the bolts included in the set The installation of the gas reducer Install the gas reducer using two sheet plates Mount the gas reducer and the gas valve inthe engine compartment in a location far away from a direct heat source the exhaust manifold Select a location to mount the gas reducer which is optimal to connect the gas reducer with the engine cooling system Drill holes and protect them against corrosion Next screw down the gas reducer using bolts included in the set Connect the gas reducer to the cooling system using T pipes and water conduits included in the set secure them by clamp hoops The installation of the controller in the engine chamber Install the controller far away from any sources of electromagnetic disturbances e g an ignition coil and from high temperature sources e g the engine s exhaust manifold and at a safe distance from any tanks containing liquids e g cooling fluid equalizing tank ATTENTION VERY IMPORANT The controller should be always The connection of the rotational speed signal RPM The RPM signal pin may be detected by a voltage tester or an oscilloscope The frequency of the impulse transmitted to the petrol controller increases together with the
28. he up to date versions of system calibration programs are available on the manufacturer s website http dtgas pl serwis html You should use the universal GasTech exe program with the number 2 21 08 to service the gas injection system by D T Gas System You have to program the D T Gas System controllers with the 22 0 ep4 input There are two possible ways to program the controllers the main difference between then is the time when they were produced 2 Variant I The controllers number 1 2 3 and 4 3 gt Variant II The controllers number 5 and 6 Which version boot loader you should choose says the last digit in the ECU number see illustration below The main window of GT calibration program with the version marked in this case it is the version number 6 Variant I the controllers number 1 2 3 and 4 Those controller version require changing the boot loader Only the producer of the controller can do that You have to send the ECU computer to D T Gas System Company to reprogram it with the 1 22 01 code you have to install the boot loader number 6 on the ECU earlier Variant II the controllers number 5 and 6 For this controller versions exists only one ep4 file common for all systems It is the file GT 1 22 01ep4 You have to reprogram the controllers for all systems which this code You should actualize reprogram firmware on cars with mounted LPG installation It is important that t
29. mages caused by the improper assembly of the set The Windows trade mark used in these instructions 1s a registered mark of the Microsoft company The GAS TECH 700 BASIC GT system must be installed only by persons who hold an appropriate license and are instructed by an authorized distributor of the D T Gas System LIST OF CONTENTS 1 TECHNICAL e ec et dei ne et dd el nc et en aa nana 5 A NE ONE PER a 6 General purpose of the system neee 6 ooo mrena meme m eee 7 Gas pressure sensor in the filter of the gaseous phase 8 Temperature of he Pas T6CUCEE os so3scsarssseossesecssscacavoncsaseacsseneasassidessassaeasssiacsenss 8 Rotational speed of the engine crankshaft 0a vana kavana aaa 8 A TA UA A rr e a rena 8 Oxygen SETISOT S signal Men ao em mome mea 9 Controlling gas electrovalves and petrol injectors 9 Gas leve I ENE ANE moai oi o S i s s KA 10 d INSTALLATION da RIP TION e e e e eee 10 The installation of the refueling valve 19 The installation of the gas tank eena nakana kakaa kaaa aaa aaa aan 19 The installation of the gas reducer eaaena nana ka kaaa kaaa aaa aaa kaaa nana 19 The installation of the controller in the engine chamber 19 The connection of the rotational speed signal RPM 20 The connection of oxygen sensor s si
30. nozzles the car works not stable on idle one has to change the nozzles for smaller ones When under big load the car switches over to petrol the opening time of gas injectors is to big one has to change the nozzles for bigger ones or don t use them at all Table 3 3 The suggested diameter of rubber hoses Location Inner diameter mm O8 8 MAP sensor dispenser The connection of the evaporator temperature sensor The signal of the gas temperature sensor in the evaporator is used to determine the time of petrol to gas switch over The temperature sensor installed in the gas reducer evaporator is to be connected with the conduit marked TEMP R of the gas controller The installation and connection of pressure sensor MAP SENSOR Connect the connection conduit marked Pressure with the connection conduit installed in the filter of the gaseous phase using a rubber pressure conduit The Vacuum ferrule must be connected with the atmospheric air However it is necessary to mount a rubber conduit with a length of around 5cm on the Vacuum ferrule That conduit must be directed downwards The installation and connection of the central unit The central unit should be installed inside a vehicle at an easily accessible location and should be visible from the driver s seat After the control unit is mounted the harness of wires should be connected with a four conductor square cross section plug Power sup
31. on control system LPG and CNG GAS TECH 700 BASIC GT is presented in the table 1 1 Table 1 1 Technical data of gas injection control system LPG and CNG GAS TECH 700 BASIC GT Admissible supply voltage range Maximum value of current consumption Minimum value of velocity signal voltage RPM Admissible range of ambient temperature 40 C to 120 C Protection degree IP66 Table 1 3 Description of additional equipment Type of engine Petrol spark ignition combustion engine Types of the petrol injection simultaneous multi point MPI Multi Point Injection sequential SFI Sequential Fuel Injection 2 SYSTEM OPERATION General purpose of the system The gas injection system control GAS TECH 700 BASIC GT 1s an electronic control device which is designed to control the fuel air mixture ratio in a car spark ignition engine provided with one or two lambda sensors Propane butane gas LPG or methane gas CNG is its fuel The device works in parallel with the petrol controller of the engine and is responsible for controlling the composition of injected fuel air mixture Based on the input signals of Fig 2 1 opening time of petrol injectors rotational speed of engine n output voltage of the oxygen sensor or sensors gas temperature in the reducer gas pressure the status of the gas petrol switch of the central unit the controller controls the opening time of injection array s el
32. orded in the memory of the petrol controller ama RPM ShTrim Inject Petre nject Gas ul Lambda Lambda 2 s PSE 19 70 a a sas aa m sea uree PERG a lt TNI 753 lu 2 28 0 009 1 460 78 si 132 125 kus ROI VVJ I TURYV OR BN Fig 4 10 The Diagnostics window of the GAS TECH 700 BASIC GT programme Calibration GAS TECH 700 BASIC GT systems IMPORTANT Calibrate the system after the configuration of all sensors and working elements The engine needs to be warmed up to the temperature of 60 C and the petrol injection times at idle should be stable and constant in a longer period of time CAUTION In case of assembly of brand new gas installation or even periodical replacement of used injectors for new ones the calibration procedure should be repeated after the drive of 1000 km mileage appx Pressure Lambda Lambda 2 80 10 00 F3 Calibration Correction Map Auto calibration 1s started when 1 The button petrol injection memo 1s pressed so that the petrol injection times are stored When the car comes to back for another check it 1s possible to see if the petrol injection time has not changed We make the check when the car works on petrol 2 Press the F7 button auto calibration 3 The auto calibration window is opened 4 press the F7 Start 5 make the calibration by 2500 RPM on LPG 6 during the calibration a window showing the progress of calibration will appear the red dots represent petrol gr
33. ply connection For safety the power supply should be connected at the end of all installation activities IMPORTANT Inspect all electrical connections for any breakdowns electrical insulation before power supply is connected Next the following devices need to be connected the GND black cable to the battery negative terminal the 12V controller supplying cable red with the battery positive terminal The installation of fuses Finally the car s flat fuses are installed in the sockets of the power supply cables and electric valves in accordance with the assembly diagram 4 THE PROGRAMMING AND CONFIGURATION OF THE CONTROLLER A description of the calibration program In order to program and configure the controller the GT 700S program working in Windows and Windows 98 SE operating system or its later version 1s required To program and configure the drivers for GT 700S the software GAS TECH 700 BASIC GT version 2 21 23 and latest ones operating in Windows are used As for PC software Windows 98 SE or its later version is required Firmware which is a program loaded to drivers memory 1s common for all versions of drivers 4 and 8 valves too and it is marked as 1 50 02 After starting the program the Main Menu window appears Program operation can be carried out using the keyboard or the computer mouse After pressing a function button or clicking on the right screen key button
34. ppear send the file by e mail to the address serwis dtgas pl Fig 4 7 Image presents the Visualisation window of the GAS TECH 700 BASIC GT programme The F5 DATA EXCHANGE window enables saving the configuration in a file the configuration readout from a file saving the configuration in the controller going back to the settings of the controller applied by the manufacturer IGASTECH7041 50 07 Fig 4 8 The Data Exchange window of the GAS TECH 700 BASIC GT programme IMPORTANT Press the Store in ECU button and set the controller s password to avoid losing the controller s settings in the case of power supply failure The password must include 8 characters and will be required at every attempt to connect with the controller The F6 DIAGNOSTIC window enables the user to conduct active tests of the gas electro valves located in the multi valve the evaporator and the injectors It also facilitates the operation check of the electro valves in the gas container and petrol injectors Additionally it is possible to correct expense the quantity of given gas of each injector This option allows to have even expenses of fuel given to every injector F8 Error codes It is also possible to read or delete error codes recorded in the gas injection memory F6 DIAGNOSTIC window gt F9 OBD When there are any connections with the OBD II EOBD system it 1s possible to read or delete error codes rec
35. ram is used for this purpose Injectors Injectors are designed to install sequential gas injectors in automotive vehicles This equipment makes provision for the evaporated gas feed into the engine After going through the filter with a distributor gas supplies particular injectors and is suitably batched to reach the engine supply system The gas injectors are electromechanic batching devices equipped with electrically controlled valves Each valve is opened and closed via an electromagnetic coil An impulse sent from the control unit triggers appropriate coils witha valve system which causes the opening of the socket and gas injection into the conduits connecting the injector with a supply system The amount of flowing gas 1s altered through the change of a valve s opening time which causes the change of the burnt fuel air mixture composition The system also works with such injectors as lt Bluetech Pegas Matrix Valtek Keihin Magic DTi Gas pressure sensor in the filter of the gaseous phase The gas pressure sensor measures relative pressure in the gas filter The sensor is located in the filter of the gaseous phase Pressure is measured against atmospheric pressure and it is needed to determine gas volume flowing through gas injectors in a time unit Temperature of the gas reducer A PTC resistance sensor is used to measure the temperature of the gas reducer Information about temperature value is needed to switc
36. ram of electric connections for the CNG GAS TECH 708 gas injection system 8 injectors GAS TECH 700 BASIC GT systems should be installed according to the following instructions The installation of the refuelling valve Install the refuelling valve at a distance not less than 70cm from the exhaust system Make a hole 054 in the bumper and fasten the valve using bolts included in the set Another method is to suspend the refuelling valve under the bumper using the bracket included in the set The installation of the gas tank Install gas tank using a rack Drill holes in the car body through the holes in the rack Next protect the holes against corrosion and screw down the rack using bolts and washers Screw down the gas tank to the rack using clamp hoops Drill two holes 027 for ventilation and protect them against corrosion Those holes cannot be located at a distance less than 35 cm away from the exhaust system Insert bushes to the holes and mount them using sheet metal screws included in the set Screw down the casing and the multivalve to the gas tank using bolts included in the set Connect the multivalve with the refuelling valve using a 08 conduit using brazen bolts and clamps included in the set The conduits between the floor and the multivalve in the boot compartment are led in the ventilation duct Fasten the toroidal tank to the floor using bolts and washers included in the set Drill holes in the floor through the holes in t
37. result in the changeover into the petrol supply mode The red diode B lights up while the green diode G turns off As soon as the central unit switch is pressed again the installation returns to the automatic mode If the switch of the central unit is pressed longer sound signals sent by an internal buzzer are on off The conditions in which the central unit issues sound signals can be set up in the Configuration gt Controller menu Oxygen sensor s signal Connect as an option then problems with calibration appear Do not connect in cars with OBD by connecting the OBD tester at the same time The signal is shown automatically The O2 IN voltage oxygen sensor signal lambda probe signal located before a catalyst together with the time of petrol injector opening is used to control the opening time of the gas injectors The controller weakens or enriches the mixture to approximate its ratio to the stochiometric level The voltages of oxygen sensors vary according to their types in the range 0 1V 1 0V 0 5V 5 0 V 0 8 1 6 V Controlling gas electrovalves and petrol injectors The controller opens and closes electrically controlled gas inflow valves depending on the working mode petrol gas as well as switches the injectors emulator on or off After switching over to gas supply the petrol supply is switched off and two gas electrovalves are opened in the gas multivalve as well as the electrovalve which is assembled in the vicini
38. termine how correct the calibration is you have to check the corrections shown by the OBD system Long trim and Short trim After the calibration the system cannot show the long trim ant short trim on minus F8 Correction Map After ending the calibration in the window correction value the correct calibration factor will appear it is received after auto calibration of the system Checking if the calibration is correct Remembering the petrol in injection time petrol injection Memo during the work in idle drive on petrol we switch to LPG and we check if the petrol injection time during work on LPG is similar to the time that was remembered on petrol we compare it be looking on the remembered petrol injection time petrol injection Memo When finding some differences on the map Making the correction value bigger will make the opening time of the petrol injectors shorter when working on LPG and making it smaller will make the time longer ADDITIONAL OPTIONS 1 KB Value the above value sets the lean degree of the LPG injector line to the petrol injectors regarding to the RPM over 2500 The change of the above factor 1s possible by 100 units from the auto calibration set by the system A onetime change can be made by changing the factor by 20 units The change of this parameter will adjust the cars dynamic specially by cars with big power 2 Offset ms value the above value sets how much the LPG injector is moved to the
39. ty of the gas reducer During gas to petrol switchover the gas valves are closed and the petrol injectors control is brought back Gas level in the tank The gas level in the tank is determined on the basis of the voltage value of the resistance sensor installed in the multivalve which is an element of the gas tank see assembly instructions of the hallotron sensor 3 INSTALLATION DESCRIPTION Installation schema for the GAS TECH 700 BASIC GT system Electric circuit diagram of the LPG gas injection system GTS BASIC 4 cylindres O 8 0 0 8 2 0 0 0 0 68 1 2 3 4 5 6 7 8 9 10 11 12 LPG V_BAT_ 5V PETROL PETROL PETROL PETROL PETROL GAS TEMP starter INJ_2ECU INJ_2INJ INJ_1ECU INJ AINJ INJ 3EcU Press LPG PETROL INL3INJ R level 22 23 24 INJ_3 OUT 13 14 15 16 17 18 19 21 fore oj INJ_4 INJ_1 INJ_2 OUT BAT NLIINJ JINJ 4ECU 20 0 8 0 6 6 6 6 0 30 0 e D T Prva gas system See eee eee eee DIAGNOSTIC CONNECTOR TO EXCHANGE FOR CENTRAL UNIT 5 YELLOW DIAG_RxD 6 BLACK GND 7 PINK V_BAT 12V 8 RED YELLOW DIAG_TxD BLACK GND FUSE RED V_BAT k 10 A VEHILCE pe CENTRAL UNIT GROUND 12V 1 BLACK GND BROWN RPM 2 WHITE BLACK SWITCH_IN 3 RED WHITE 5V_OUT 4 GREEN BLACK SWITCH_OUT a 1 GREEN Injector LPG 1 2 VIOLET Injector LPG 2 3 RED Injectors supply 4 RED Injectors supply 5 WHITE
40. upply only after reaching the rotational speed memorized by the gas injector e g 2000 rotations min and an appropriate temperature e g 20 C No additional requirements need to be satisfied during gas to petrol changeover It follows immediately after pressing the switch in the central unit On the top of the central unit there are diodes which inform a driver of the gas level in the tank The flashing of all green diodes means that the tank is full The single lighting of the red diode signals the reserve fuel level Table 2 1 The modes of the system operation The modes of the The status of signalling diodes in the central unit system operation G gas green B petrol red blinking no lighting fighting no lighting no lighting lighting The three modes of the system operation are signalled by the diodes lettered G green and B red They follow each other when the switch in the central unit is pressed After turning the key in the ignition switch the central unit changes over to the automatic mode the diode G starts to blink waiting until the moment when the gas supply working conditions described earlier are fulfilled When that moment comes the green diode starts to burn in an uninterrupted manner and the system changes over to the gas supply mode if the conditions are not fulfilled it is possible to force the system changeover by pressing the switch in the central unit The pressing of the switch in the central unit will
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