Driver Door Module (DDM, DMFL/R)

B173D-13-MIRROR SIGNAL LAMP CONTROL-CIRCUIT OPEN

For a complete wiring diagram, refer to the Wiring Information.





- When Monitored:
Continuously.

- Set Condition:
The Door Module senses an open between the Mirror Turn Signal Driver circuit and the Mirror Turn Signal Return circuit for more than two seconds with the turn signal switched on.





Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Turn the drivers side turn signal on.
4. Press and release the Mirror Select switch to select the Driver Outside Rearview Mirror.
5. With the scan tool, read the active DTCs.

Does the scan tool display: B173D-13-MIRROR SIGNAL LAMP CONTROL - CIRCUIT OPEN?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test .

2. CHECK (P501) DRIVER MIRROR TURN SIGNAL DRIVER CIRCUIT FOR AN OPEN TO THE (P593) DRIVER MIRROR TURN SIGNAL RETURN CIRCUIT




1. Measure the resistance between the (P501) Driver Mirror Turn Signal Driver circuit and the (P593) Driver Mirror Turn Signal Return circuit in the Driver Outside Rearview Mirror C2 (Component Side) harness connector.

Is the resistance below 30.0 Ohms?

Yes

- Replace the Door Module. Door Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test .

No

- Repair the open in the (P501) Driver Mirror Turn Signal Driver circuit. If the wiring harness and harness connectors are okay, replace the Driver Outside Rearview Mirror. Service and Repair.
- Perform the BODY VERIFICATION TEST. Body Verification Test .