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Home >> Volvo >> 2013 >> XC90 Base, AWD >> Repair and Diagnosis >> Electrical >> Body Electrical >> Accessory Electronic Module (AEM) And Central Electronic Module (CEM) - Diagnostic Trouble Codes - 2 Of 2 >> CEM-8D03: Brake Light Switch Internal Fault (2005-2014) >> Fault-Tracing >> Checking Stop Lamp Switch Status

Checking Stop Lamp Switch Status

NOTE:

The following troubleshooting shall not be performed if no symptom (according to trouble code information) is noticed on the vehicle. Then the diagnostic trouble code shall be erased instead.

This diagnostic trouble code indicates that there is a defect in the brake light switch or the leads to the same.

Brake light switch is a switch that controls when the brake lights shall be activated/not activated.

Troubleshoot according 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 detected, replace brake light switch.

Remedy as necessary.

Other information