Circuit/System Testing
- Clear the DTC. Headlamp switch OFF, disconnect all interior lamps dimming related components. Refer to the CIRCUIT/SYSTEM VERIFICATION for all components that contain the I/P lamps. Verify the DTC B2652 does not set
- If the DTC resets then test for a short to ground in the I/P lamps supply voltage circuit. If the circuit/connections test normal replace the BCM.
- Reconnect each component one at a time and test for the DTC B2652.
- If the DTC resets, then replace that component.