Prins VSI LPG - Electrical Connections VSI-I Wiring Harness

Copyright © Prins Autogassystemen B.V. 2013 Page 24
Electrical connections VSI-I wiring harness
Check and measure the wiring in case of changes in the cars wiring colours.
Wire number / code
Wire colour
Connection
50 MAIN GND
brown
Connect to the '–' of the battery; use a ring terminal for this
purpose.
25-51 +12V BAT
red
Connect to the '+' of the battery; use a ring terminal for this
purpose or solder.
Do not place the main fuse into the fuse holder before
having completed the installation of the system.
50 LPG/CNG VLV GND
53 + LPG/CNG VLV
brown
yellow - green
Ground shut-off valve.
Power supply shut-off
valve.
2-pole connector shut-off valve.
42 ECT GND
43 ECT
brown
grey
Ground ECT sensor.
ECT measurement.
2-pole black connector temperature
sensor in the evaporator.
22 RS232 TxD
23 RS232 RxD
50 DIAGNOSE GND
51 +12V DIAG
grey
grey
brown
red
4-pole black connector diagnosis wire connection.
15 T LPG
17 Psys
18 + 5V Psys
42 Psys GND
grey
pale green
red
brown
4-pole 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.
5 5G INJ OUT 5
6 34 G INJ A PLUS
grey - yellow
red
Connector VSI-injector to cylinder 5.
4 4G INJ OUT 6
6 34 G INJ A PLUS
brown - yellow
red
Connector VSI-injector to cylinder 6.
3 3G INJ OUT 7
6 34 G INJ A PLUS
light blue -
yellow
red
Connector VSI-injector to cylinder 7.
2 2G INJ OUT 8
6 34 G INJ A PLUS
red - yellow
red
Connector VSI-injector to cylinder 8.
44 AD1
green
Option, programmable input
16 MAP
18 + 5V MAP
42 MAP GND
blue
red
brown
For measuring the inlet manifold pressure (MAP).
In combination with Prins Turbo/MAP sensor.
PTO CRANK-D
purple / purple-
yellow
For interrupting the crank signal on CNG.
50 Ground
53 + CNG
Signal
blue
green-yellow
blue
For measuring the high pressure signal of the CNG system
In combination with Prins High Pressure gauge