B1D2A-12

B1D2A-12-PASSENGER MIRROR VERTICAL MOTOR CONTROL - CIRCUIT SHORT TO BATTERY





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

Theory of Operation

The Mirror Vertical Driver circuit supplies battery voltage for the mirror up position and ground for the mirror down position. The Mirror Common Driver supplies battery voltage for the mirror Down position and ground for the mirror up position.

- When Monitored:
Continuously.

- Set Condition:
When the Passenger Door Module (PDM) senses a short high on the (P72) Passenger Mirror Vertical Driver circuit for more than 10 ms.





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

Does the scan tool display; B1D2A-12-PASSENGER MIRROR VERTICAL MOTOR CONTROL - CIRCUIT SHORT TO BATTERY?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. For vehicles 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 the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK (P695) PASSENGER MIRROR FOLD DRIVER CIRCUIT AND (P692) PASSENGER MIRROR UNFOLD DRIVER CIRCUIT FOR A SHORT TO (P72) PASSENGER MIRROR VERTICAL DRIVER CIRCUIT




1. Turn the ignition off.
2. Disconnect the Passenger Outside Rearview Mirror (Component Side) harness connector from the PDM C2 harness connector.
3. Measure the resistance between the (P72) Passenger Mirror Vertical Driver circuit and the (P695) Passenger Mirror Fold Driver circuit at the Passenger Outside Rearview Mirror (Component Side) connector
4. Measure the resistance between the (P72) Passenger Mirror Vertical Driver circuit and the (P692) Passenger Mirror Unfold Driver circuit at the Passenger Outside Rearview Mirror (Component Side) connector

Is the resistance below 10k Ohms for either measurement?

Yes

- Repair all circuits with a resistance below 10k Ohms for a short to the (P72) Passenger Mirror Vertical Driver circuit. If the wiring harness and connector are okay, replace the Passenger Outside Rearview Mirror. Outside Rearview Mirror - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK (P72) PASSENGER MIRROR VERTICAL DRIVER CIRCUIT FOR A SHORT TO THE (C17) PASSENGER MIRROR HEATER DRIVER CIRCUIT




1. Measure the resistance between the (P72) Passenger Mirror Vertical Driver circuit and the (C17) Passenger Mirror Heater Driver circuit at the Passenger Outside Rearview Mirror (Component Side) connector.

Is the resistance below 10k Ohms?

Yes

- Repair the (P72) Passenger Mirror Vertical Driver circuit for a short to the (C17) Passenger Mirror Heater Driver circuit. If the wiring harness and connector are okay, replace the Passenger Outside Rearview Mirror. Outside Rearview Mirror - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Passenger Door Module (PDM). Door Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.