B1D18

B1D18-PASSENGER MIRROR HORIZONTAL POSITION SENSOR INPUT CIRCUIT LOW





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

- When Monitored:
Continuously.

- Set Condition:
The (P68) Passenger Mirror Horizontal Position Signal circuit supplies input to the Passenger Door Module. The DTC B1D18 will set if the input value is less than the known good (stored) value for more than 60 ms.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Operate the Mirror Switch in all directions several times.
4. Cycle the ignition from on to off 3 times.
5. Turn the ignition on.
6. With the scan tool, read DTCs.

Does the scan tool display: B1D18-PASSENGER MIRROR HORIZONTAL POSITION SENSOR INPUT CIRCUIT LOW?

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 the BODY VERIFICATION TEST. Body Verification Test.

2. TEST FOR A SHORTED OUTSIDE REARVIEW MIRROR




1. Turn the ignition off.
2. Disconnect the Passenger Outside Rearview Mirror connector.
3. Turn the ignition on.
4. With the scan tool, erase DTCs.
5. Operate the Mirror Switch in all directions several times.
6. Cycle the ignition from on to off 3 times.
7. Turn the ignition on.
8. With the scan tool, read DTCs.

Does the scan tool display: B1D18-PASSENGER MIRROR HORIZONTAL POSITION SENSOR INPUT CIRCUIT LOW?

Yes

- Go To 3

No

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

3. CHECK THE (P68) PASSENGER MIRROR HORIZONTAL POSITION SIGNAL CIRCUIT FOR A SHORT TO GROUND




1. Turn the ignition off.
2. Disconnect the Passenger Door Module C2 connector.
3. Measure the resistance between ground and the (P68) Passenger Mirror Horizontal Position Signal circuit in the Passenger Door Module C2 connector.

Is the resistance below 10k ohms?

Yes

- Repair the (P68) Passenger Mirror Horizontal Position Signal circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. CHECK THE (P68) PASSENGER MIRROR HORIZONTAL POSITION SIGNAL CIRCUIT FOR A SHORT TO THE (P66) PASSENGER MIRROR SENSOR GROUND CIRCUIT




1. Measure the resistance between the (P68) Passenger Mirror Horizontal Position Signal circuit and the (P66) Passenger Mirror Sensor Ground circuit in the Passenger Door Module C2 connector.

Is the resistance below 10k ohms?

Yes

- Repair the (P68) Passenger Mirror Horizontal Position Signal circuit for a short to the (P66) Passenger Mirror Sensor Ground circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 5

5. CHECK THE (P68) PASSENGER MIRROR HORIZONTAL POSITION SIGNAL CIRCUIT FOR A SHORT TO THE (C917) PASSENGER MIRROR HEATER RETURN CIRCUIT




1. Measure the resistance between the (P68) Passenger Mirror Horizontal Position Signal circuit and the (C917) Passenger Mirror Heater Return circuit in the Passenger Outside Rearview Mirror connector.

Is the resistance below 10k ohms?

Yes

- Repair the (P68) Passenger Mirror Horizontal Position Signal circuit for a short to the (C917) Passenger Mirror Heater Return circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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