Immobiliser (Circuit Diagram): Description and Operation

Circuit Diagram

 

K117     Immobiliser control unit

 

Y5          Fuel cutoff solenoid valve

 

XA         Wiring harness plug, instrument panel/engine

XD         Wiring harness plug, diagnosis, 16-pin

X13        Wiring harness plug, diagnosis, 10-pin

X35        Wiring harness plug, engine & fuel cutoff solenoid valve control unit

 

 

Cross reference:

 

SM1       Engine telltale (input, request signal, petrol and 25 DT engines only)

SM2       Engine control unit (output, imo signal/odometer signal)

WEG      Odometer signal from speedometer or ABS control unit

 

 

Note:

 

Illustration F 0441 shows the circuits for all petrol engines and the 25 DT on the left; on the right are the circuits for all diesel engines without electronic engine management.