B1D2C

B1D20(DDM), B1D2C(PDM) - MIRROR VERTICAL MOTOR CONTROL CIRCUIT HIGH

B1D20(DDM), B1D2C(PDM) - Mirror Vertical Motor Control Circuit High:

WHEN MONITORED
When the Mirror Vertical Driver Output is turned on.

SET CONDITION
DTC B1D20 - If the Driver Door Module senses voltage on the (P71) Driver Mirror Vertical Driver circuit within 10 ms of turning on the Mirror Vertical Driver Output.
DTC B1D2C - If the Passenger Door Module senses voltage on the (P72) Passenger Mirror Vertical Driver circuit within 10 ms of turning on the Mirror Vertical Driver Output.

POSSIBLE CAUSES
- FOR THE DRIVER MEMORY MIRROR SYSTEM:
- (P71) driver mirror vertical driver circuit shorted to voltage
- Driver outside rearview mirror shorted
- Driver door module

- FOR THE PASSENGER MEMORY MIRROR SYSTEM:
- (P72) passenger mirror vertical driver circuit shorted to voltage
- Passenger outside rearview mirror shorted
- Passenger door module

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.

Q: Does the scan tool display: B1D20 or B1D2C MIRROR VERTICAL MOTOR 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.

Q: Does the scan tool display: B1D20 or B1D2C MIRROR VERTICAL MOTOR 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 (P71) DRIVER MIRROR VERTICAL DRIVER CIRCUIT OR THE (P72) PASSENGER MIRROR VERTICAL DRIVER CIRCUIT FOR A SHORT TO VOLTAGE




For the Driver Memory Mirror System, proceed as follows:
- Disconnect the Driver Door Module C2 connector.
- Measure the voltage of the (P71) Driver Mirror Vertical Driver circuit.

For the Passenger Memory Mirror System, proceed as follows:
- Disconnect the Passenger Door Module C2 connector.
- Measure the voltage of the (P72) Passenger Mirror Vertical Driver circuit.

Q: Is the voltage above 0.2 volts?

Yes, Driver Mirror
Repair the (P71) Driver Mirror Vertical Driver circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

Yes, Passenger Mirror
Repair the (P72) Passenger Mirror Vertical 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