Inspection & Verification

WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

Verify the customer concern.

Visually inspect for obvious signs of mechanical or electrical damage.

VISUAL INSPECTION CHART

Mechanical	Electrical
Exterior mirror Exterior mirror control switch Exterior mirror cover Exterior mirror glass Interior rear view mirror	Battery junction box (BJB) fuse 23 (10A) Central junction box (CJB) fuse(s): 9 (7.5A) 19 (7.5A) 32 (7.5A) Circuitry Driver door module (DDM) Driver seat module (DSM) Exterior mirror control switch Exterior mirror glass Exterior mirror motor Exterior mirror Interior auto-dimming rear view mirror Loose or corroded connections

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

NOTE: Make sure to use the latest scan tool software release.

If the cause is not visually evident, connect the scan tool to the data link connector (DLC).

NOTE: The vehicle communication module (VCM) LED prove out confirms power and ground from the DLC are provided to the VCM.

If the scan tool does not communicate with the VCM:
- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM.
- refer to MODULE COMMUNICATIONS NETWORK article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
If the scan tool does not communicate with the vehicle:
- verify the ignition key is in the ON position.
- verify the scan tool operation with a known good vehicle.
- refer to MODULE COMMUNICATIONS NETWORK article to diagnose no response from the driver door module (DDM) or the driver seat module (DSM).
Preform the network test.
- If the scan tool responds with no communication from one or more modules, refer to MODULE COMMUNICATIONS NETWORK article.
- If the network test passes, retrieve and record the continuous memory DTCs.
Clear the continuous DTCs and preform the self-test diagnostics for the DSM or DDM.
If the DTCs retrieved are related to the concern, go to the DRIVER SEAT MODULE (DSM) DTC TABLE or DRIVER DOOR MODULE (DDM) DTC TABLE . For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
If no DTCs related to the concern are retrieved, go to Symptom Chart - Rear View Mirrors or Go to Symptom Chart - Noise, Vibration and Harshness (NVH) .

DRIVER DOOR MODULE (DDM) DTC TABLE

DTC	Description	Action
B2336	Mirror Switch Assembly Circuit Failure	Go to Pinpoint Test D .
All Other DTCs	-	REFER to MULTIFUNCTION ELECTRONIC MODULES article.

DRIVER SEAT MODULE (DSM) DTC TABLE

DTC	Description	Action
B1667	Mirror Driver Up/Down Motor Stalled	Go to Pinpoint Test D .
B1668	Mirror Driver Right/Left Motor Stalled	Go to Pinpoint Test D .
B1669	Mirror Passenger Up/Down Motor Stalled	Go to Pinpoint Test D .
B1670	Mirror Passenger Right/Left Motor Stalled	Go to Pinpoint Test D .
B2312	Mirror Passenger Horizontal Feedback Potentiometer Circuit Failure	Go to Pinpoint Test D .
B2315	Mirror Passenger Horizontal Feedback Potentiometer Circuit Short to Ground	Go to Pinpoint Test D .
B2316	Mirror Passenger Vertical Feedback Potentiometer Circuit Failure	Go to Pinpoint Test D .
B2319	Mirror Passenger Vertical Feedback Potentiometer Circuit Short to Ground	Go to Pinpoint Test D .
B2320	Mirror Driver Horizontal Feedback Potentiometer Circuit Failure	Go to Pinpoint Test D .
B2323	Mirror Driver Horizontal Feedback Potentiometer Circuit Short to Ground	Go to Pinpoint Test D .
B2324	Mirror Driver Vertical Feedback Potentiometer Circuit Failure	Go to Pinpoint Test D .
B2327	Mirror Driver Vertical Feedback Potentiometer Circuit Short to Ground	Go to Pinpoint Test D .
All Other DTCs	-	REFER to MULTIFUNCTION ELECTRONIC MODULES article.