Prins VSI CNG Installation Manual Download

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Table of contents

Required equipment / tools / materials for installing a complete system _______________________ 3

Vehicle check ________________________________________________________________________ 3

General instructions __________________________________________________________________ 4

Introduction _________________________________________________________________________ 5

Approval numbers VSI LPG / CNG components ___________________________________________ 6

The Prins LPG reducer ________________________________________________________________ 7

The Keihin CNG regulator ______________________________________________________________ 8

The injector rail ______________________________________________________________________ 9

The Prins filter unit __________________________________________________________________ 10

The Keihin filter unit _________________________________________________________________ 10

The VSI computer ____________________________________________________________________ 11

VSI-I _______________________________________________________________________________ 11

VSI-2.0 computer ____________________________________________________________________ 12

Instructions rotating the Prins VSI injector rail ___________________________________________ 13

The wiring loom. _____________________________________________________________________ 14

VSI-I _______________________________________________________________________________ 14

VSI-2.0 _____________________________________________________________________________ 14

Hose connections ___________________________________________________________________ 15

Diagram 1 VSI inlet manifold coupling _________________________________________________ 16

Diagram 2 VSI inlet manifold coupling with nylon hose __________________________________ 17

Diagram 3 Parallel water connection __________________________________________________ 18

Diagram 4 Serial water connection____________________________________________________ 19

Diagram 5 Serial water connection CNG regulator _______________________________________ 20

The VSI-I fuel switch _________________________________________________________________ 21

The VSI-2.0 fuel switch _______________________________________________________________ 22

Electrical connections on the LPG reservoir _____________________________________________ 23

Electrical connections VSI-I wiring harness ______________________________________________ 24

Electrical connections VSI-I wiring harness ______________________________________________ 25

Electrical connections VSI-2.0 wiring harness ____________________________________________ 26

Electrical connections VSI-2.0 wiring harness ____________________________________________ 27

Insulate all not used wires. ____________________________________________________________ 27

Electrical connections VSI-2.0 wiring harness ____________________________________________ 28

Electrical connections VSI-2.0 wiring harness ____________________________________________ 29

Electrical connections RPM module 091/0236 ____________________________________________ 30

Electrical connections Petrol Pressure Simulator 091/0252 _________________________________ 31

Electrical connections Dual Sensor Interface (DSI) ________________________________________ 32

Electrical connections CNG Prins Timing Optimizer (PTO) _________________________________ 33

Diagram CNG PTO wiring Prins Turbo / MAP sensor ______________________________________ 33

Prins Turbo / MAP sensor _____________________________________________________________ 34

Diagram 5 LPG Base layout VSI 4 cylinder connector ____________________________________ 35

Summary of Contents for VSI CNG

Page 1: ...DATE 2013 09 04 Copyright Prins Autogassystemen B V 2013 VERSION NR C ...

Page 2: ... Diagram 2 VSI inlet manifold coupling with nylon hose __________________________________ 17 Diagram 3 Parallel water connection __________________________________________________ 18 Diagram 4 Serial water connection____________________________________________________ 19 Diagram 5 Serial water connection CNG regulator_______________________________________ 20 The VSI I fuel switch ________________...

Page 3: ...4 Diagram 22 Replacing the injection module 180 70024 091 0145_________________________ 55 Diagram 23 Replacing the injection module 180 70024 091 71004 4 cylinder _____________ 56 Diagram 24 Replacing the injection module 180 70026 091 71006 6 cylinder _____________ 57 Diagram 25 Replacing the injection module 180 70024 091 71004 8 cylinder _____________ 58 Diagram 26 LPG wiring 180 70014 _______...

Page 4: ...ht Assortment drill bits 4 to 12 mm Assortment cutters ø 20 30 50 70 mm Punching tool ø 70 mm Round file Portable drill or pneumatic drill Threading device male M6x1 M8x1 M10x1 Pipe flaring tool for 6 and 8 mm copper pipe Air gun Vacuum cleaner Hot air gun Allan spanner for inlet couplings 3 5mm part nr 099 9970 Reducer adjustment tool part nr 099 9960 Molex extraction tool for VSI switch connecto...

Page 5: ...ts using solder and shrink sleeve Do not stretch the wiring harness No component of the LPG CNG system shall be located within 100 mm of the exhaust or similar heat source unless such components are adequately shielded against heat Remove any internal burrs after having shortened the LPG CNG hose This guarantees the maximum flow through the hose without pollution If holes have to be drilled wear s...

Page 6: ...hat the original petrol management ECM controls the amount of LPG CNG injected via the gas injectors into the engine The VSI ECM only translates the relevant signals coming from the engine management system necessary for MASTER SLAVE strategy Following this strategy the petrol management system is the MASTER and the VSI ECM the SLAVE The advantage of this strategy while driving on LPG CNG the lamb...

Page 7: ...ck off valve E4 110R 000095 Wika CNG Pressure indicator E4 110R 000190 Prins VSI Injector rail E4 67R 010093 E4 110R 000021 Keihin VSI Injector E4 67R 010092 E4 110R 000020 Prins Filter unit E4 67R 010096 E4 110R 000028 Keihin Filter unit E4 67R 010177 E4 110R 000091 Prins ECU E4 67R 010098 E4 110R 000083 Electrical VSI components EMC E4 10R 020507 VSI I LPG VSI 2 0 LPG VSI 2 0 DI LPG VSI 1 CNG VS...

Page 8: ...een the coolant fluid hoses dependant on the converted vehicle the reducer is placed in series or in parallel with the heating system Overpressure 5mm relief hose connect to the intake manifold No component of the LPG system shall be located within 100 mm of the exhaust or similar heat source unless such components are adequately shielded against heat The pressure can be adjusted with the adjustin...

Page 9: ...g with the water connections downwards Mount the regulator on a bracket and bolt on with 3 M6x1 nuts The regulator is connected to the heating system circuit by couplings between the coolant fluid hoses Optional MAP connection connect to the intake manifold if needed No component of the CNG system shall be located within 100 mm of the exhaust or similar heat source unless such components are adequ...

Page 10: ...c stroke 13 0 17 4 white 42cc stroke 9 0 12 1 15 0 20 1 Blue 52cc stroke 13 0 17 4 20 0 26 8 Orange 63cc stroke 18 0 24 1 27 0 36 2 Yellow 73cc stroke 25 0 33 5 35 0 46 9 82cc stroke 28 0 37 6 39 0 52 3 Brown 100cc stroke 31 0 41 6 45 0 60 3 Color ID KN 8 8 Injector size Minimum power per cylinder CNG Maximum power per cylinder CNG kW HP kW HP Green 9 0 12 1 White 42cc stroke 7 0 9 4 12 0 16 1 Blu...

Page 11: ...in the VSI system by means of a combination sensor The filter unit has a single or a double outlet of 11mm Single outlet on converted vehicle with 3 4 or 5 cylinder engines with one VSI injector rail Double outlet on converted vehicle with 6 or 8 cylinder engines with two VSI injector rails Single outlet Double outlet 3 4 5 cylinder engine 6 8 cylinder engine The Keihin filter unit ...

Page 12: ...mputer The VSI computer can be mounted into the engine room as well as inside the car depending on the converted vehicle Never mount the computer near a heat source Never mount the computer upside down Never clean engine room with a high pressure cleaner VSI I ...

Page 13: ... 2013 Page 12 VSI 2 0 computer The Prins VSI 2 0 computer is the second generation master slave management system This new design has distinctive features and will be used as a new platform for current and future Prins injection systems ...

Page 14: ...panner size 13 mm Torque spanner 0 3 Nm Disassembly assembly 1 Unscrew both M8 4 nuts 2 Remove the strip 2 3 Remove the injectors 10 with a rotating movement out of the fuel rail 1 4 Rotate the rail 1 180 degrees 5 Mount the injectors 10 with a rotating movement into the fuel rail 1 6 Mount the strip 2 on the injectors 10 7 Tighten the strip 2 with two M8 nuts 4 Tightening moment 2 5 Nm ...

Page 15: ...maximum care is taken when connecting wiring Make professional solder joints and insulate the joints Do not stretch the wiring harness VSI I The wiring harness is equipped with a 56 position interlocking connector which slots into the VSI computer Pull the purple interlocking clip and push the connector into the VSI computer push the clip back into its original position the connector is now locked...

Page 16: ...ogassystemen B V 2013 Page 15 Hose connections Try to keep the inlet manifold hoses as short as possible Use a hose clamp on all the LPG CNG hose connections Please observe that there is no damage or fouling to the hoses ...

Page 17: ...16 Diagram 1 VSI inlet manifold coupling Lambda sensor exhaust manifold VSI inlet manifold coupling inlet manifold petrol injector VSI injector Hose clamp LPG hose Hose clamp Coupling ...

Page 18: ...Page 17 Diagram 2 VSI inlet manifold coupling with nylon hose petrol injector Coupling Barrel Hose clamp Nylon hose LPG hose Nut VSI injector Hose clamp inlet manifold VSI inlet manifold coupling with nylon hose exhaust manifold oxygen sensor ...

Page 19: ... injector rail filter unit lock off valve reducer oxygen sensor heater valve petrol injector cylinder 1 VSI injector 1 2 3 4 exhaust T piece interior heater with valve LPG fuel line Tank overpressure hose Psys Tlpg sensor engine coolant in out inlet manifold vsi coupling throttle body ...

Page 20: ...nection injector rail filter unit lock off valve reducer overpressure hose oxygen sensor interior heater without valve engine coolant LPG fuel line Tank petrol injector cylinder 1 VSI injector 1 2 3 4 inlet manifold exhaust vsi coupling in out throttle body Psys Tlpg sensor in ...

Page 21: ...Copyright Prins Autogassystemen B V 2013 Page 20 Diagram 5 Serial water connection CNG regulator ...

Page 22: ...N POWER FEED SWITCH PULSE FUEL SWITCH DIAGNOSTIC LED GROUND BEEPER POWER FEED BEEPER BLUE BROWN YELLOW GREEN RED YELLOW ORANGE BLACK RED 8 POLE CONNECTORS POWER FEEDS 51 ARE EXCHANGABLE VSI SWITCH partnr 080 70060 Hall partnr 080 70062 0 95 Ohm partnr 080 70063 0 5 Volt POSITION 1 ON CONNECTOR POSITION 2 ON CONNECTOR POSITION 3 ON CONNECTOR POSITION 4 ON CONNECTOR POSITION 5 ON CONNECTOR POSITION ...

Page 23: ...Petrol No Off On Off on 3 sec system check Contact on engine of Gas No flashing1 0Hz Off Off on 3sec system check Engine on Petrol Petrol Off On Off Off Gas standby Gas Petrol flashing 1 0Hz On Off Off Gas mode Gas Gas On On Off Off Tank empty switched back to petrol mode Gas Petrol flashing1 0Hz LED 1 1 0Hz 3x0 5Hz Off Tank empty petrol mode Petrol Petrol Off Led1 on Off Off Critical fault Gas Pe...

Page 24: ...rvoir BLACK BLUE GROUND SIGNAL PRINS SOLDER THE CONNECTIONS IN THE FITTING BOX AND PROTECT THEM WITH A SHRINK SLEEVE BLUE BLACK Tank gauge Hall COIL TANK VALVE BLACK RED RED BLACK BLUE FITTING BOX VSI COMPUTER TRIPLE WIRE CABLE SOLDER THE CONNECTIONS IN THE FITTING BOX AND PROTECT THEM WITH A SHRINK SLEEVE GREEN BLACK Tank gauge 0 95 Ohm COIL TANK VALVE BLACK RED RED BLACK BLUE FITTING BOX VSI COM...

Page 25: ...le black connector filter unit connection 33 33G INJ OUT 1 34 34 G INJ A PLUS white yellow red Connector VSI injector to cylinder 1 32 32G INJ OUT 2 34 34 G INJ A PLUS green yellow red Connector VSI injector to cylinder 2 31 31G INJ OUT 3 34 34 G INJ A PLUS pink yellow red Connector VSI injector to cylinder 3 30 30G INJ OUT 4 34 34 G INJ A PLUS blue yellow red Connector VSI injector to cylinder 4 ...

Page 26: ... on the wire connect this wire to the corresponding petrol injector Connect the bicoloured VSI measuring wire to the ecu side wire code ECU SIDE Connect the accompanying full coloured VSI wire to the petrol injector side wire code MIN INJ SIDE See diagrams in Installation Manual General part 1 2 Attention Each bicoloured measuring wire corresponds to a specific LPG injector and cylinder number Do ...

Page 27: ...ving completed the installation of the LPG system 13 12V battery sense red Connect to the of the battery together with VSI wire 44 12V battery 112 petrol injectors or ignition 15 red grey Make a connection to petrol injector or ignition 15 Wire colour Wire location 20 AD3 lambda 1 orange For the measurement of the lambda signal of cylinder bank 1 Connect the wire in parallel to the lambda sensor W...

Page 28: ...emperature sensor 4 pole connector 35 C ground 14 T Gas 9 5 Volt sensor 16 Psys brown grey red green For measuring gas pressure and temperature Connect the connector to the filter unit sensor 2 pole connector 24 12V reducer lock off 31 Ground reducer lock off yellow green brown Connect the connector to the reducer lock off valve 4 pole connector 46 Service TxD 65 Service RxD 68 C ground grey grey ...

Page 29: ...2 Low pink yellow pink Optional insulate Connect to EOBD diagnose connector 23 ground switched 2 yellow Optional insulate 28 5V EXT red Optional insulate 29 5V PU1 optional red Optional insulate 30 5V PU2 optional red Optional insulate 43 GAS injectors red Optional insulate 45 K line pink Optional insulate 57 12V external red Optional insulate 76 power tank valve 2 22 ground switched 1 red brown C...

Page 30: ...I injector and petrol injector cylinder number Do not interchange the wires VSI measure wire nr Full coloured Bicoloured To interrupt petrol injector wire colour location 121 ecu side injector 1 120 injector side inj 1 white yellow white Colour Location 119 ecu side injector 2 118 injector side inj 2 green yellow green Colour Location 117 ecu side injector 3 116 injector side inj 3 pink yellow pin...

Page 31: ...ng loom Connect the purple white wire of the RPM module to the purple white wire nr 40 of the VSI wiring loom Connect the grey white wire of the RPM module to the grey white wire nr 13 of the VSI wiring loom Connect the purple wire of the RPM module to the ignition coil driver wire RPM module ignition coil rpm 40 ground 50 ignition 13 VSI computer battery ignition solder ...

Page 32: ...he voltage on petrol for the blue wire pressure sensor signal wire when the engine is idling Or read the actual petrol pressure when you have the disposal of a scan tool which can read the actual petrol system pressure Next we have to setup the same Voltage pressure when running on LPG via de pot meter The pot meter is accessible when you remove the small protection cover of the module RED WHITE B...

Page 33: ...ing all blue and black wires are exchangeable since they are internally connected The DSI makes it possible to connect two level sensors to one lpg switch The DSI will always show the highest lpg level on the switch PRINS GROUND SIGNAL BLACK BLUE GROUND SIGNAL BLACK BLUE PRINS Dual Sensor Interface 080 70066 Hall level indicator 080 70065 Tank lock off valve ...

Page 34: ...s Autogassystemen B V 2013 Page 33 Electrical connections CNG Prins Timing Optimizer PTO Connect the PTO module according the shown diagram Check if the latest software is downloaded in the PTO Diagram CNG PTO wiring ...

Page 35: ...Copyright Prins Autogassystemen B V 2013 Page 34 Prins Turbo MAP sensor ...

Page 36: ...35 Diagram 5 LPG Base layout VSI 4 cylinder connector ...

Page 37: ...36 Diagram 6 LPG Base layout VSI 4 cylinder solder ...

Page 38: ...37 Diagram 7 LPG Base layout VSI 5 cylinder ...

Page 39: ...38 Diagram 8 LPG Base layout VSI 6 cylinder connector ...

Page 40: ...39 Diagram 9 LPG Base layout VSI 6 cylinder solder ...

Page 41: ...40 Diagram 10 LPG Base layout VSI 8 cylinder connector ...

Page 42: ...41 Diagram 11 LPG Base layout VSI 8 cylinder solder ...

Page 43: ...42 Diagram 12 CNG Base layout ...

Page 44: ...43 Diagram 13 VSI 2 0 LPG Base layout ...

Page 45: ...44 Diagram 14 VSI 2 0 MAP LPG Base layout ...

Page 46: ...45 ...

Page 47: ...ON 50 MAIN GROUND petrol ecu 4 CYLINDER CONNECTOR INJECTION MODULE VSI 1 REV B 06 06 2005 green min inj side 2 green yellow 38 ecu side 2 pink min inj side 3 pink yellow 37 ecu side 3 blue min inj side 4 blue yellow 36 ecu side 4 37 ecu side 3 VSI 4 computer 4 3 2 1 petrol ecu petrol ecu petrol ecu PETROL INJECTORS Make sure that the polarity of the petrol injectors and the VSI connectors are simu...

Page 48: ...8 ecu side 2 26 SIMU LOW ON 50 MAIN GROUND petrol ecu petrol ecu petrol ecu PETROL INJECTORS 4 CYLINDER SOLDER INJECTION MODULE VSI 1 REV B 06 06 2005 green min inj side 2 green yellow 38 ecu side 2 pink min inj side 3 pink yellow 37 ecu side 3 blue min inj side 4 blue yellow 36 ecu side 4 37 ecu side 3 VSI 4 computer injection module 4 cylinder 180 70024 ...

Page 49: ...EV B 06 06 2005 green min inj side 2 green yellow 38 ecu side 2 pink min inj side 3 pink yellow 37 ecu side 3 blue min inj side 4 blue yellow 36 ecu side 4 37 ecu side 3 VSI 8 computer 4 3 2 1 petrol ecu petrol ecu petrol ecu PETROL INJECTORS petrol ecu petrol ecu 6 5 brown min inj side 6 brown yellow 10 ecu side 6 grey min inj side 5 grey yellow 11 ecu side 5 11 ecu side 5 10 ecu side 6 Make sure...

Page 50: ...OW ON 50 MAIN GROUND petrol ecu petrol ecu petrol ecu PETROL INJECTORS 6 CYLINDER SOLDER INJECTION MODULE VSI 1 REV B 06 06 2005 green min inj side 2 green yellow 38 ecu side 2 pink min inj side 3 pink yellow 37 ecu side 3 blue min inj side 4 blue yellow 36 ecu side 4 5 6 petrol ecu petrol ecu 11 ecu side 5 10 ecu side 6 grey min inj side 5 grey yellow 11 ecu side 5 brown min inj side 6 brown yell...

Page 51: ... 2 white yellow 39 ecu side 1 white min inj side 1 petrol ecu 6 8 cylinder injection module 180 70024 grey yellow 11 ecu side 5 grey min inj side 5 pink yellow 37 ecu side 3 light blue min inj side 7 light blue yellow 9 ecu side 7 petrol ecu 8 50 MAIN GROUND 26 SIMU LOW ON VSI 8 computer 11 ecu side 5 37 ecu side 3 39 ecu side 1 9 ecu side 7 50 MAIN GROUND 26 SIMU LOW ON 36 ecu side 4 38 ecu side ...

Page 52: ...side 8 red yellow 8 ecu side 8 pink min inj side 3 white min inj side 1 white yellow 39 ecu side 1 PETROL INJECTORS 1 3 petrol ecu 5 7 petrol ecu grey yellow 11 ecu side 5 grey min inj side 5 pink yellow 37 ecu side 3 light blue min inj side 7 petrol ecu light blue yellow 9 ecu side 7 petrol ecu 11 ecu side 5 37 ecu side 3 39 ecu side 1 50 main ground 26 simu low on VSI 8 computer 26 simu low on 5...

Page 53: ...DULE VSI 1 REV B 180 30024 06 06 2005 INJ SIDE A ECU SIDE A INJ SIDE B ECU SIDE B INJ SIDE C ECU SIDE C INJ SIDE D ECU SIDE D ECU SIDE A ECU SIDE D ECU SIDE C ECU SIDE B 50 MAIN GROUND 26 SIMU LOW ON 4 cylinder 8 cylinder module A 8 cylinder module B 1 2 3 4 1 3 5 7 2 4 6 8 A B C D REPAIR MODULE wire ...

Page 54: ...53 Diagram 20 connector injection module 091 71004 ...

Page 55: ...54 Diagram 21 injection module 091 71006 ...

Page 56: ...NJECTOR 4 1 2 petrol ecu blue yellow 36 ecu side 4 blue min inj side 4 petrol ecu 36 ecu side 4 39 ecu side 1 38 ecu side 2 37 ecu side 3 50 main ground 50 main ground 50 13 ignition 13 27 26 50 54 VSI computer 26 SIMU LOW ON 3 4 insulate green yellow 38 ecu side 2 blue min inj side 4 petrol ecu pink min inj side 3 green min inj side 2 blue yellow 36 ecu side 4 pink yellow 37 ecu side 3 Red Black ...

Page 57: ...njector petrol injector vsi ecm white yellow green yellow pink yellow blue yellow grey yellow brown yellow white green pink blue grey brown grey white red white 13 ingnition plus 39 ecu side 1 38 ecu side 2 37 ecu side 3 36 ecu side 4 11 ecu side 5 10 ecu side 6 26 inj mod command min inj side 1 brown 54 inj mod ground petrol ecu petrol ecu vsi ecu white yellow green yellow pink yellow blue yellow...

Page 58: ...injector petrol injector vsi ecm white yellow green yellow pink yellow blue yellow grey yellow brown yellow white green pink blue grey brown grey white red white 13 ingnition plus 39 ecu side 1 38 ecu side 2 37 ecu side 3 36 ecu side 4 11 ecu side 5 10 ecu side 6 26 inj mod command min inj side 1 brown 54 inj mod ground petrol ecu petrol ecu vsi ecu white yellow green yellow pink yellow blue yello...

Page 59: ...u 39 ecu side 1 38 ecu side 2 37 ecu side 3 36 ecu side 4 11 ecu side 5 10 ecu side 6 min inj side 2 min inj side 3 min inj side 4 min inj side 5 min inj side 6 injection module wiring loom print on wire wire color connected to pin module wiring loom 080 71996 injection module with connector 091 71004 1 2 3 4 Petrol injectors 5 6 7 8 Petrol injectors 26 27 13 54 39 38 37 36 8 9 10 11 VSI LPG CNG E...

Page 60: ...white black blue yellow grey 23 24 25 26 27 28 29 30 20 21 22 sealed sealed G INJ OUT 3 G INJ OUT 2 G INJ OUT 1 LPG injectors black ecu side inj 4 ecu side inj 3 ecu side inj 2 pink yellow green yellow blue yellow pin TPS throttle position sealed ECT sensor ground ECT coolant temp sealed beeper low switching diagnose LED color brown green black orange 42 43 44 45 46 47 48 49 39 40 41 ecu side inj ...

Page 61: ... 28 29 30 20 21 22 sealed sealed G INJ OUT 3 G INJ OUT 2 G INJ OUT 1 LPG injectors black ecu side inj 4 ecu side inj 3 ecu side inj 2 pink yellow green yellow blue yellow pin TPS throttle position sealed ECT sensor ground ECT coolant temp sealed beeper low switching diagnose LED color brown green black orange 42 43 44 45 46 47 48 49 39 40 41 ecu side inj 1 white yellow RPM engine speed purple whit...

Page 62: ...ed red white pink yellow green yellow white yellow red grey white black blue yellow grey 23 24 25 26 27 28 29 30 20 21 22 sealed sealed G INJ OUT 3 G INJ OUT 2 G INJ OUT 1 LPG injectors black ecu side inj 4 ecu side inj 3 ecu side inj 2 pink yellow green yellow blue yellow pin TPS throttle position sealed ECT sensor ground ECT coolant temp sealed beeper low switching diagnose LED color brown green...

Page 63: ...ite black blue yellow grey 23 24 25 26 27 28 29 30 20 21 22 sealed sealed G INJ OUT 3 G INJ OUT 2 G INJ OUT 1 LPG injectors black ecu side inj 4 ecu side inj 3 ecu side inj 2 pink yellow green yellow blue yellow pin TPS throttle position sealed ECT sensor ground ECT coolant temp sealed beeper low switching diagnose LED color brown green black orange 42 43 44 45 46 47 48 49 39 40 41 ecu side inj 1 ...

Page 64: ... sealed G INJ A ground G INJ OUT 4 color grey red red white pink yellow green yellow white yellow red grey white black blue yellow grey 23 24 25 26 27 28 29 30 20 21 22 sealed sealed G INJ OUT 3 G INJ OUT 2 G INJ OUT 1 LPG injectors black ecu side inj 4 ecu side inj 3 ecu side inj 2 pink yellow green yellow blue yellow pin TPS throttle position sealed ECT sensor ground ECT coolant temp sealed beep...

Page 65: ...k yellow green yellow white yellow red grey white black blue yellow grey 23 24 25 26 27 28 29 30 20 21 22 sealed sealed G INJ OUT 3 G INJ OUT 2 G INJ OUT 1 LPG injectors black ecu side inj 4 ecu side inj 3 ecu side inj 2 pink yellow green yellow blue yellow pin TPS throttle position sealed ECT sensor ground ECT coolant temp sealed beeper low switching diagnose LED color brown green black orange 42...

Page 66: ...sensor ground Psys sensor ground brown brown 50 50 50 50 51 51 pin color 51 52 reducer valve ground main ground tank valve ground diagnose ground 12 volt fuel switch brown brown brown brown red 12 volt battery red 53 53 sealed 53 power fuel indication power tank valve power reducer valve green yellow brown red green yellow 54 INJ simulator ground 55 56 sealed sealed vsi wire vsi wire vsi wire vsi ...

Page 67: ...indication power tank valve power reducer valve green yellow brown red green yellow 54 INJ simulator ground 55 56 sealed sealed vsi wire vsi wire vsi wire vsi wire Prins Alternative Fuel Systems Revision by date Checked by date Designed by date TS 23 04 07 Approved by date sealed 12 volt diagnose red ground sealed sealed sealed sealed sealed sealed sealed sealed sealed 18 5 Volt MAP red 50 switch ...

Page 68: ...nd Psys sensor ground brown brown 50 50 50 50 51 51 pin color 51 52 reducer valve ground main ground tank valve ground diagnose ground 12 volt fuel switch brown brown brown brown red 12 volt battery red 53 53 sealed 53 power fuel indication power tank valve power reducer valve green yellow brown red green yellow 54 INJ simulator ground 55 56 sealed sealed vsi wire vsi wire vsi wire vsi wire sealed...

Page 69: ... valve ground main ground tank valve ground diagnose ground 12 volt fuel switch brown brown brown brown red 12 volt battery red 53 53 sealed 53 power fuel indication power tank valve power reducer valve green yellow brown red green yellow 54 INJ simulator ground 55 56 sealed sealed vsi wire vsi wire vsi wire vsi wire sealed 12 volt diagnose red ground sealed sealed sealed 18 5 Volt MAP red 50 swit...

Page 70: ...er tank valve power reducer valve green yellow brown red green yellow 54 INJ simulator ground 55 56 sealed sealed vsi wire vsi wire vsi wire vsi wire 12 volt diagnose red ground 18 5 Volt MAP red 50 switch ground brown G INJ OUT 8 G INJ OUT 7 red yellow light blue yellow lambda bank 2 orange white 43 42 t 2 1 T ect sensor A1 A2 A3 A4 A5 A6 B6 A7 A8 B1 B2 B3 B4 B5 B8 B7 vsi ecu C6 C1 C2 C3 C4 C5 C8...

Page 71: ...NJ simulator ground 55 56 sealed sealed vsi wire vsi wire vsi wire vsi wire 12 volt diagnose red ground 18 5 Volt MAP red 50 switch ground brown G INJ OUT 8 G INJ OUT 7 red yellow light blue yellow lambda bank 2 orange white 42 t 2 1 T ect sensor A1 A2 A3 A4 A5 A6 B6 A7 A8 B1 B2 B3 B4 B5 B8 B7 vsi ecu C6 C1 C2 C3 C4 C5 C8 C7 petrol injector petrol injector petrol injector petrol injector vsi ecm w...

Page 72: ...3 sealed 53 power fuel indication power tank valve power main valve green yellow brown red green yellow 54 INJ module ground 55 56 sealed sealed vsi wire vsi wire vsi wire vsi wire sealed 12 volt diagnose red lambda bank 2 ground sealed sealed sealed sealed sealed sealed sealed sealed sealed 18 5 Volt MAP red 50 switch ground brown 1 3 4 CNG injectors Petrol ECU manufacturer n a version n a softwa...

Page 73: ...72 Diagram 39 VSI 2 0 wiring 191 040002 ...

Page 74: ...ure temperature sensor in the filter unit 321 Psys voltage to high Check the power connection of the Pressure temperature sensor in the filter unit 322 Psys 3 5 Bar Check the coolant temperature T ect and the evaporator for leakage of the first stage 330 unexpected parameter change Contact Prins Autogassystemen 340 reducer warms up to slow Check the water connections circuit 341 Gas leakage system...

Page 75: ...ealer authorised by the importer Adjustments and repairs on your Prins VSI system should only be carried out by a dealer authorised by Prins Autogassystemen B V MAINTENANCE AND SERVICE Registration of maintenance and service of the VSI LPG system 25 000 km or after 2 years 100 000 km or after 2 years 175 000 km or after 2 years 250 000 km or after 2 years Checklist executed services Lock off valve...

Page 76: ...ment Filter unit filter replacement Hoses pipes checked Fastening of components checked Electrical connection wiring checked Checked for fuel leakage Checked for trouble codes petrol and CNG system pressure Checked for exhaust emissions Number of kilometres Date Number of kilometres Date Number of kilometres Date Number of kilometres Date The service intervals of the filter replacements may be div...

Page 77: ... expired 5 Check all components and connections for any gas leakage use a LPG CNG leak detector device or foam leak spray Caution for moving and rotating parts in the engine compartment 6 Let the engine run warm on petrol 80 C Check if the evaporator coolant water heats up Check the engine signals petrol injection time RPM ECT lambda Let the engine run idle on LPG CNG Adjust the LPG evaporator pre...

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