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B1F01-12






B1F01-12-PASSENGER MIRROR CONTROL SENSOR POSITION CIRCUIT - CIRCUIT SHORT TO BATTERY





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

Theory of Operation

The mirror position sensor is used in conjunction with the memory system. Anytime the mirror changes position, the sensor changes its value. That value is stored in the door module. When a command from the memory set switch is received, the module will position the mirror to the exact position chosen by the particular driver.

Possible Causes

- When Monitored:
Continuously with ignition on.

- Set Condition:
When the Door Module senses a short to battery on either the 5-volt supply, the mirror horizontal position signal or the mirror vertical position signal circuit for more than two seconds. this code will set.





Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION

NOTE: Before proceeding be sure this vehicle is equipped with Memory Mirrors and the configuration is set to = True.

1. Turn the ignition on.
2. Using a scan tool, record and erase the Diagnostic Trouble Codes (DTCs).
3. Turn the passenger side turn signal on.
4. Turn the approach lamps on, if equipped.
5. Turn the rear defogger on, if equipped with heated mirror.
6. Press and release the Mirror Select switch to select the Passenger Outside Rearview Mirror.
7. Operate the Mirror Adjust Switch in all directions several times while monitoring the scan tool for DTCs. NOTE: After adjusting the mirror in one direction wait at least two seconds before adjusting the mirror in the opposite direction, as this will allow time for an active DTC to set, if present.

Does the scan tool display: B1F01-12-PASSENGER MIRROR CONTROL SENSOR POSITION CIRCUIT - CIRCUIT SHORT TO BATTERY as active?

Yes
- Go To 2

No
- The conditions that caused this code to set are not present at this time. For vehicle's equipped with folding outside rearview mirrors, repeat this test with the mirror folded. If this DTC is now active, Go To 2. Otherwise, using the wiring diagrams as a guide, check all related connectors for signs of water intrusion, corrosion, pushed out or bent terminals and poor pin fit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK (A857) 5-VOLT SUPPLY CIRCUIT IN THE MODULE FOR A SHORT TO BATTERY

NOTE: In this step we are measuring the 5-Volt Supply voltage at the Door Module. It should not be over 5.5 volts.

1. Turn the ignition off.
2. Disconnect the Passenger Outside Rearview Mirror C1 and C2 (Component Side) harness connectors from the Door Module C1 and C2 sockets.
3. Turn the ignition on.
4. Measure the voltage between Ground and the (A857) 5-volt Supply circuit at the Door Module (C1-Pin 10) (Module Side) socket.

Is the Voltage above 5.5 Volts?

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

No
- Go To 3

3. CHECK (A857) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO ANY OF THE CIRCUIT DRIVER OR SIGNAL CIRCUITS

NOTE: We are now checking the wiring and the mirror for any crossed circuits.





1. Turn the ignition off.
2. Measure the resistance between the (A857) 5-Volt Supply circuit (C1-Cavity 10) and all designated circuit Driver or Signal circuits in the Passenger Outside Rearview Mirror C1 and C2 (Component Side) harness connectors.

Is the resistance below 20K Ohms between the (A857) 5-Volt Supply and any of the designated Driver circuits?

Yes
- Repair all circuits with a resistance below 20K Ohms for a short to the (A857) 5-Volt Supply circuit. If the wiring harness and connectors are okay, replace the Passenger Outside Rearview Mirror in accordance with the Service Information. .
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No
- Go To 4

4. CHECK (P64) PASSENGER MIRROR VERTICAL POSITION SIGNAL CIRCUIT FOR A SHORT TO ANY CIRCUIT DRIVER OR SIGNAL CIRCUITS




1. Measure the resistance between the (P64) Passenger Mirror Vertical Position Signal circuit (C1- Cavity 7) and all designated circuit Driver or Signal circuits in the Passenger Outside Rearview Mirror C1 and C2 (Component Side) harness connectors.

Is the resistance below 20K Ohms between the (P64) circuit and any of the designated Driver or Signal circuits?

Yes
- Repair all circuits with a resistance below 20K Ohms for a short to the (P64) Passenger Mirror Vertical Position Signal circuit. If the wiring harness and connectors are okay, replace the Passenger Outside Rearview Mirror. .
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No
- Go To 5

5. CHECK (P68) PASSENGER MIRROR HORIZONTAL POSITION SIGNAL CIRCUIT FOR A SHORT TO ANY CIRCUIT DRIVER OR SIGNAL CIRCUITS




1. Measure the resistance between the (P68) Passenger Mirror Horizontal Position Signal circuit (C1- Cavity 9) and all the designated circuit Driver or Signal circuits in the Passenger Outside Rearview Mirror C1 and C2 (Component Side) harness connectors.

Is the resistance below 20K Ohms between the (P68) circuit and any of the designated circuit Driver or Signal circuits?

Yes
- Repair all circuits with a resistance below 20K Ohms for a short to the (P68) Passenger Mirror Horizontal Position Signal circuit. If the wiring harness and connectors are okay, replace the Passenger Outside Rearview Mirror. .
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No
- Inspect the wiring and connectors for damage and repair as necessary. If the wiring and connectors are okay, replace the Passenger Door Module in accordance with the Service Information. .
- Perform the BODY VERIFICATION TEST. Body Verification Test.

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