Checking the cable for the input signal

Check the cable between central electronic module (CEM) terminal #12D and steering wheel module (3/130) terminal #15.

Also check the ground lead for the steering wheel module (3/130) terminal #16 for an open-circuit.

If no faults are found, the fault may be in the steering wheel module.

Remedy as necessary.

Other information 

• For further information about signals and other values, see Signal specification .
• To connect the breakout box to the central electronic module (CEM), see Connecting the breakout box .
• To connect the breakout box to the steering wheel module, see Connecting the breakout box .
• To replace the steering wheel module, see Steering wheel module (SWM), replacing .