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Home >> Volvo >> 2009 >> S60 Base, AWD >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Central Electronic Module (CEM), Rear Electronic Module (Rem), Upper Electronics Module (UEM) - Diagnostic Trouble Codes - 8 Of 13 >> CEM-8D04: Internal Fault In Control Module (2005-2009) >> Fault-tracing >> Replacing Central Electronic Module (CEM) >> Replacing Central Electronic Module (CEM)
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Replacing Central Electronic Module (CEM)

The component has registered an internal fault.

Troubleshoot acc. to:

1. Check the brake light switch connector for contact resistance and oxidation.

2. Check that the brake light switch is supplied with voltage.

3. Check leads between Central electronic module (CEM) and brake light switch.

If no defect is found and the brake light is on constantly, change Central electronic module (CEM).

NOTE:

Central electronic module (CEM) shall not be replaced if the brake lights work correctly. Then the diagnostic trouble code shall be erased instead.

Remedy as necessary.

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