Intermittent fault
Check the control module and roof lamp module connectors. Check for contact resistance and oxidation. Check for loose connections.
Check the cable between control module terminal #16 and roof lamp module terminal #7A. Check for an intermittent short-circuit to supply voltage. Check for an intermittent open-circuit.
Check the cable between control module terminal #4 and roof lamp module terminal #8A. Check for an intermittent short-circuit to supply voltage. Check for an intermittent open-circuit.
Check the roof lamp module housing.
Check the roof lamp module switches.
Other information:
- For further information about signals and other values, see Signal specification
- To connect the breakout box, see Connecting the breakout box
- To access the roof lamp module switches:
- For -2002, see Interior lighting and upper electronic module (UEM), replacing
- For 2003-, see Interior lighting, replacing .
- To access the connector for the upper electronic module (UEM), see Interior lighting and upper electronic module (UEM), replacing
- With the ignition on and when the function is not activated, the voltage between terminals #7A and #8A and ground should be 0 V
- See Checking wiring and terminals .
- Continue
Refer to Information