Cruise Control, Active Signal

Trionic system
Other systems also need to know when the Cruise Control system is engaged.

Information to this effect is therefore supplied by the Cruise Control system from pin J (9).

1 Initiate the diagnostics mode, see "Checking the Cruise Lamp". Checking the Cruise Lamp
Check the voltage on pin J (9) of the Cruise Control connector.
It should be about 12 V when the switch is in the SET, RESUME or TIP/OFF position.
If the voltage is not OK, go to "Before Control Module Replacement".
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".