Operation CHARM: Car repair manuals for everyone.

Steering Wheel Module (SWM)



CHECKING THE GROUND TERMINAL FOR THE STEERING WHEEL MODULE

Checking the ground terminal



- Ignition off
- the control module disconnected
- Switch off all equipment that takes power from the battery (courtesy lighting, radio etc).

Connect an ohmmeter between terminal #16 on the breakout box and the battery negative terminal.

To connect the breakout box, see Connecting the breakout box. ZZZZZZ

The ohmmeter should read approximately 0 ohms
OK - Testing Complete
Not OK - Continue below.


Checking for open-circuits, contact resistance and oxidation



For the control module, check ground terminal 31/84 and the wiring connected to it. Check for an open-circuit and check for contact resistance and oxidation. Checking Wiring and Terminals - Permanent Faults


Verification



- Ignition off
- the control module disconnected.
- Switch off all equipment that takes power from the battery (courtesy lighting, radio etc)

For the control module, connect an ohmmeter between terminal #16 on the breakout box and the battery negative terminal.

The ohmmeter should read approximately 0 ohms
Yes - Testing Complete
No - Continue below.


Fault-tracing information
The fault should be diagnosed and remedied.
Since this is not the case the fault-tracing process has failed.