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Cruise Control, activesignal

Cruise Control, active signal


Trionic system

The Trionic system needs to know when the Cruise Control system is engaged.

The Cruise Control system therefore sends information to this effect from pin J (9).

To cause the engine to go down to basic charging pressure.


1. Initiate diagnsotics mode, see .

Check the voltage on pin J (9) of the Cruise Control connector.

It should be 12 V when the switch is in the SET, RESUME or ON/OFF position.

If voltage is incorrect, proceed to .

If the voltage is OK, continue with point 2.

2. Check the wiring for continuity or a short circuit as follows:



Measure the resistance across pin J (9) of the Cruise Control connector and pin 36 of the TRIONIC control module connector.

If the resistance is > 1 ohm, check the wiring and rectify the fault.

If the resistance is > 1 ohm, the fault is in the other system. Continue fault diagnosis as described in Service Manual 2:7 "TRIONIC engine management system".