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Symptom: EC MIRROR DAY/NIGHT LINE FAULT When Monitored and Set Condition: EC MIRROR DAY/NIGHT LINE FAULT When Monitored: With the ignition on. Set Condition: The EVIC Module does not receive any messages from the EC Mirror. POSSIBLE CAUSES INTERMITTENT CONDITION AUTOMATIC DAY/NIGHT MIRROR AUTOMATIC HEADLAMP SWITCH SENSOR CIRCUIT OPEN AUTOMATIC HEADLAMP SWITCH SENSOR CIRCUIT SHORTED TO GROUND AUTOMATIC HEADLAMP SWITCH SENSOR CIRCUIT SHORTED TO VOLTAGE CMTC/EVIC MODULE TEST ACTION APPLICABILITY 1 With the DRBIII t, erase the DTC. Cycle the ignition on and off several times, leaving the ignition on for at least 15 t, read DTCs. Did the DTC reset? All Yes → Go To 2 No → The condition is not present at this time. Monitor DRBIIIt parameters while wiggling the related wire harness. Refer to any 2 Turn the ignition off. All Yes → Replace the Automatic Day/Night Mirror in accordance with the Service Information. No → Go To 3 739 OVERHEAD CONSOLE |