Checking the Power Supply and Ground Terminals. Permanent Fault

Checking the power supply and ground terminals. Permanent fault

Checking power supply and ground terminals
Check steering wheel module connector A. Check for contact resistance and oxidation.
Check fuse 22 in the passenger compartment fusebox for the steering wheel module.
Note! If the fuse is blown, check the circuit after the fuse. Check for a short-circuit to ground before replacing the fuse. Then replace the fuse. For further information about the circuit after the fuse, refer to the appropriate wiring diagram.
Check the cable for power supply between fuse 22 in the passenger compartment fusebox and the control module terminals #A1 and #A6. Check for an open-circuit.
Check the ground lead between control module #A22 and ground terminal 31/84. Check for an open-circuit. Check ground terminal 31/84. Check for contact resistance and oxidation.
Remedy as necessary.

Other information:
- To access and replace the control module see Steering wheel module (SWM), replacing Service and Repair
- To access or replace the fuses, see Fusebox, passenger compartment, replacing Fusebox, Passenger Compartment, Replacing
- Checking wiring and terminals. Checking Wiring And Terminals





Was a fault detected?

Yes - Fault Found

No - No Fault Found

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