Driver Door Module (DDM)

9009-MIRROR HEATER CIRCUIT LOW





For a complete wiring diagram, Refer to the Wiring Information Electrical Diagrams.

Theory of Operation

The Driver Door Module (DDM) will operate the heated mirrors automatically whenever the ambient air temperature is below approximately 55 degrees.

- When Monitored:
Whenever the module is awake.

- Set Condition:
When the DDM senses an excessive current draw on either the Left or Right Mirror Driver circuit, this code will set.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. With the scan tool, actuate the Heated Mirrors.
4. Wait 30 seconds.
5. With the scan tool, read DTCs.

Does the scan tool display 9009-MIRROR HEATER CIRCUIT LOW?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform BODY VERIFICATION TEST. Verification Tests.

2. LEFT OUTSIDE REARVIEW MIRROR
1. With the scan tool, stop the Heated Mirrors actuator.
2. With the scan tool, erase DTCs.
3. Turn the ignition off.
4. Disconnect the Left Outside Rearview Mirror connector.
5. Turn the ignition on.
6. With the scan tool, actuate the Heated Mirrors.
7. Open and close the left door.
8. Wait 30 seconds.
9. With the scan tool, read DTCs.

Does the scan tool display 9009-MIRROR HEATER CIRCUIT LOW?

Yes

- Go To 3

No

- Replace the Left Outside Rearview Mirror.
- Perform BODY VERIFICATION TEST. Verification Tests.

3. RIGHT OUTSIDE REARVIEW MIRROR
1. With the scan tool, stop the Heated Mirrors actuator.
2. With the scan tool, erase DTCs.
3. Turn the ignition off.
4. Disconnect the Right Outside Rearview Mirror connector.
5. Turn the ignition on.
6. With the scan tool, actuate the Heated Mirrors.
7. Open and close the right door.
8. Wait 30 seconds.
9. With the scan tool, read DTCs.

Does the scan tool display 9009-MIRROR HEATER CIRCUIT LOW?

Yes

- Go To 4

No

- Replace the Right Outside Rearview Mirror.
- Perform BODY VERIFICATION TEST. Verification Tests.

4. LEFT MIRROR HEATER DRIVER CIRCUIT SHORT TO GROUND




1. With the scan tool, stop the Heated Mirrors actuator.
2. Turn the ignition off.
3. Disconnect the Driver Door Module C3 connector.
4. Measure the resistance between ground and the Left Mirror Heater Driver circuit in the DDM C3 connector.

Is the resistance below 5000.0 ohms?

Yes

- Repair the Left Mirror Heater Driver circuit for a short to ground.
- Perform BODY VERIFICATION TEST. Verification Tests.

No

- Go To 5

5. LEFT MIRROR HEATER DRIVER CIRCUIT SHORT TO THE LEFT MIRROR RETURN CIRCUIT




1. Measure the resistance between the Left Mirror Heater Driver circuit and the Left Mirror Return circuit.

Is the resistance below 5000.0 ohms?

Yes

- Repair the Left Mirror Heater Driver circuit for a short to the Left Mirror Return circuit.
- Perform BODY VERIFICATION TEST. Verification Tests.

No

- Go To 6

6. RIGHT MIRROR HEATER DRIVER CIRCUIT SHORT TO GROUND




1. Disconnect the Driver Door Module C1 connector.
2. Measure the resistance between ground and the Right Mirror Heater Driver circuit in the DDM C1 connector.

Is the resistance below 5000.0 ohms?

Yes

- Repair the Right Mirror Heater Driver circuit for a short to ground.
- Perform BODY VERIFICATION TEST. Verification Tests.

No

- Replace the Driver Door Module.
- Perform BODY VERIFICATION TEST. Verification Tests.