Operation CHARM: Car repair manuals for everyone.

Diagnostic Telltale Led (Red or Green)

The mirror assembly has an LED, which is commanded either green or red for different states of diagnostics. The red LED on steady indicates a failure of the self-diagnostics, a flashing red and green LED indicates the CIM is performing self-diagnostic. This occurs during key up. The LED will illuminate green when self-diagnostics has passed and the system is ready for activation. If the module fails diagnostics and fails a DTC in the module, the red LED is the feedback to the customer, that the system is not functioning properly.