B1D28

B1D1C(DDM), B1D28(PDM) - MIRROR MOTOR COMMON CONTROL CIRCUIT HIGH





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
When the Mirror Common Driver Output is turned on.

- Set Condition:
DTC B1D1C - If the Driver Door Module senses voltage on the (P73) Driver Mirror Common Driver circuit within 10 ms of turning on the Mirror Common Driver Output.

DTC B1D28 - If the Passenger Door Module senses voltage on the (P70) Passenger Mirror Common Driver circuit within 10 ms of turning on the Mirror Common Driver Output.





NOTE: This procedure addresses the Driver Memory Mirror system's circuits and components and the Passenger Memory Mirror system's circuits and components. Select only that which applies to the system you are diagnosing.

Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase DTCs.
Operate the Mirror Switch in all directions several times.
Cycle the ignition from on to off 3 times.
Turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display: B1D1C or B1D28 MIRROR MOTOR COMMON CONTROL CIRCUIT HIGH?

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 - VER 1. Body Verification Test.

2. TEST FOR A SHORTED OUTSIDE REARVIEW MIRROR




For the Driver Memory Mirror System, proceed as follows:
- Turn the ignition off.
- Disconnect the Driver Outside Rearview Mirror connector.
- Turn the ignition on.
- With the scan tool, erase DTCs.
- Operate the Mirror Switch in all directions several times.
- Cycle the ignition from on to off 3 times.
- Turn the ignition on.
- With the scan tool, read DTCs.

For the Passenger Memory Mirror System, proceed as follows:
- Turn the ignition off.
- Disconnect the Passenger Outside Rearview Mirror connector.
- Turn the ignition on.
- With the scan tool, erase DTCs.
- Operate the Mirror Switch in all directions several times.
- Cycle the ignition from on to off 3 times.
- Turn the ignition on.
- With the scan tool, read DTCs.

Does the scan tool display: B1D1C or B1D28 MIRROR MOTOR COMMON CONTROL CIRCUIT HIGH?

Yes

- Go To 3

No

- Replace the Outside Rearview Mirror.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

3. CHECK THE (P73) DRIVER MIRROR COMMON DRIVER CIRCUIT OR THE (P70) PASSENGER MIRROR COMMON DRIVER CIRCUIT FOR A SHORT TO VOLTAGE




For the Driver Memory Mirror System, proceed as follows:
- Measure the voltage of the (P73) Driver Mirror Common Driver circuit.

For the Passenger Memory Mirror System, proceed as follows:
- Measure the voltage of the (P70) Passenger Mirror Common Driver circuit.

Is the voltage above 0.2 volts?

Yes, Driver Mirror

- Repair the (P73) Driver Mirror Common Driver circuit for a short to voltage.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

Yes, Passenger Mirror

- Repair the (P70) Passenger Mirror Common Driver circuit for a short to voltage.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

No, Driver Mirror

- Replace the Driver Door Module.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

No, Passenger Mirror

- Replace the Passenger Door Module.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.