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B1D0B-12






B1D0B-12-DRIVER MIRROR VERTICAL POSITION SENSOR INPUT - 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.

- When Monitored:
Continuously.

- Set Condition:
The Door Module senses more than 400 mA current on the (A856) 5-volt Supply circuit or an open or a short high on the (P67) Driver Mirror Vertical Position Signal circuit for more than two seconds.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. Using a scan tool, record and erase Diagnostic Trouble Codes (DTCs).
3. Turn the turn signal on, if equipped with turn signal mirror.
4. Turn the puddle lamps on, if equipped with puddle lamp mirror.
5. Turn the rear defogger on, if equipped with heated mirror.
6. Press and release the Mirror Select switch to select the Driver 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 fault to set if present.

Does the scan tool display: B1D0E-12-DRIVER MIRROR HORIZONTAL POSITION SENSOR INPUT - 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 test with mirror folded. If DTC is now active, Go To 2. Otherwise, using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and poor pin fit. Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK (A856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

NOTE: In this step we are measuring the 5-Volt Supply voltage at the Door Module. It should not be over 5.2 volts.

1. Turn the ignition off.
2. Disconnect the Driver 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 (A856) 5-volt Supply circuit at the Door Module (C1-Pin 10) (Module Side) socket.

Is the Voltage above 5.2 Volts?

Yes

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

No

- Go To 3

3. CHECK (A856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO ANY OF THE CIRCUIT DRIVER 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 (A856) 5-Volt Supply circuit (C1-Cavity 10) and all designated circuit Driver circuits in the Driver Outside Rearview Mirror C1 and C2 (Component Side) harness connectors.

Is the resistance below 20K Ohms between the (A856) 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 (A856) 5-Volt Supply circuit. If the wiring harness and connectors are okay, replace the Driver Outside Rearview Mirror. Outside Rearview Mirror - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. CHECK (P67) DRIVER MIRROR VERTICAL POSITION SIGNAL CIRCUIT FOR A SHORT TO ANY CIRCUIT DRIVER CIRCUITS




1. Measure the resistance between the (P67) Driver Mirror Vertical Position Signal circuit (C1- Cavity 7) and all designated circuit Driver circuits in the Driver Outside Rearview Mirror C1 and C2 (Component Side) harness connectors.

Is the resistance below 20K Ohms between the (P67) circuit and any of the designated Driver circuits?

Yes

- Repair all circuits with a resistance below 20K Ohms for a short to the (P67) Driver Mirror Vertical Position Signal circuit. If the wiring harness and connectors are okay, replace the Driver Outside Rearview Mirror. Outside Rearview Mirror - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 5

5. CHECK (P67) DRIVER MIRROR VERTICAL POSITION SIGNAL CIRCUIT FOR A OPEN IN THE DOOR MODULE




1. Connect the Driver Outside Rearview Mirror C1 and C2 (Component Side) harness connectors to the Driver Door Module.
2. Turn the ignition on.
3. Using a scan tool, record and erase the Diagnostic Trouble Codes (DTCs).
4. Using a jumper wire, connected to ground, back probe the (P67) Driver Mirror Vertical Position Signal circuit (C1-Cavity 7).

NOTE: The graphic shows the connector terminal end view. Back probe the wire end of the terminal. Use caution not to damage the wire.

5. With the scan tool, read the active DTCs.

Does the scan tool display: B1D0B-14-DRIVER MIRROR VERTICAL POSITION SENSOR INPUT - CIRCUIT SHORT TO GROUND OR OPEN as active?

Yes

- Replace the Driver Outside Rearview Mirror. Outside Rearview Mirror - Removal.
- 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 Driver Door Module. Door Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

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