B1D34

B1D34-DRIVER MIRROR HEATER CONTROL CIRCUIT HIGH





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

- When Monitored:
Continuously.

- Set Condition:
When the Driver Door Module (DDM) senses a short high or open on the (C16) Driver Mirror Heater Driver circuit for more than 10 ms with the heater turned off.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase Diagnostic Trouble Codes (DTCs).
3. Turn the rear defogger OFF.
4. Press and release the Mirror Select switch to select the Driver Outside Rearview Mirror.
5. Operate the Mirror Adjust switch in all directions several times.
6. With the scan tool, read DTCs.

Does the scan tool display DTC B1D34-DRIVER MIRROR HEATER CONTROL CIRCUIT HIGH?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. For vehicle's equipped with folding outside rearview mirrors, repeat test with mirror folded. If DTC is now active, Go To 2. Otherwise, use the wiring diagram/schematic as a guide and inspect the wiring and connectors.
- Perform BODY VERIFICATION TEST. Body Verification Test.

2. CHECK (C16) DRIVER MIRROR HEATER DRIVER CIRCUIT FOR A SHORT TO VOLTAGE




1. Turn the ignition off.
2. Disconnect the Driver Outside Rearview Mirror (Component Side) connector from the DDM C2 connector.
3. Turn the ignition on.
4. Measure the voltage of the (C16) Driver Mirror Heater Driver circuit between the Driver Outside Rearview Mirror (Component Side) connector and ground.

Is there any voltage present?

Yes

- Repair the (C16) Driver Mirror Heater Driver circuit for a short to voltage. If the wiring harness and connector are okay, replace the Driver Outside Rearview Mirror.
- Perform BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK (C16) DRIVER MIRROR HEATER DRIVER CIRCUIT AND (C160) DRIVER MIRROR HEATER RETURN CIRCUIT FOR AN OPEN




1. Turn the ignition off.
2. Measure the resistance between the (C16) Driver Mirror Heater Driver circuit and the (C160) Driver Mirror Heater Return circuit at the Driver Outside Rearview Mirror (Component Side) connector.

Is the resistance approximately 10.0 ohms?

Yes

- Replace the Driver Door Module (DDM).
- Perform BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the (C16) Driver Mirror Heater Driver circuit or the (160) Driver Mirror Heater Return circuit for an open. If the wiring harness and connector are okay, replace the Driver Outside Rearview Mirror.
- Perform BODY VERIFICATION TEST. Body Verification Test.