B1D20(DDM), B1D2C(PDM) – MIRROR VERTICAL MOTOR CONTROL CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
- 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 CONDITIONDoes 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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
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: B1D20 or B1D2C MIRROR VERTICAL MOTOR CONTROL CIRCUIT HIGH?
Yes
- Go To 3
No
- Replace the Outside Rearview Mirror in accordance with the Service Information.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
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.
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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
Yes, Passenger Mirror
- Repair the (P72) Passenger Mirror Vertical Driver circuit for a short to voltage.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No, Driver Mirror
- Replace the Driver Door Module in accordance with the Service Information.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No, Passenger Mirror
- Replace the Passenger Door Module in accordance with the Service Information.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).