B1D08
B1D08-11-DRIVER MIRROR POSITION SENSOR POWER SUPPLY - CIRCUIT SHORT TO GROUND
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 a short low on the (A856) 5-Volt Supply circuit for more than two seconds with the output turned on.
1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. Using a scan tool, record and erase the Diagnostic Trouble Codes (DTCs).
3. Turn the driver 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 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 DTC to set, if present.
Does the scan tool display: B1D08-11-DRIVER MIRROR POSITION SENSOR POWER SUPPLY - CIRCUIT SHORT TO GROUND 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 (A856) 5-VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Driver Outside Rearview Mirror C1 (Component Side) harness connector from the Driver Door Module.
3. Measure the resistance between Ground and the (A856) 5-Volt Supply circuit in the Driver Outside Rearview Mirror C1 connector.
Is the resistance below 10K Ohms
Yes
- Repair the short to ground in the (A856) 5-Volt Supply circuit. If the wiring harness and connector is okay, replace the Driver Outside Rearview Mirror. Outside Rearview Mirror - 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 GROUND OR RETURN CIRCUIT
1. Disconnect the Driver Outside Rearview Mirror C2 (Component Side) harness connector.
2. Measure the resistance between the (A856) 5-Volt Supply circuit (C1-10) and all designated Ground and Return circuits in the Driver Outside Rearview Mirror C1 and C2 (Component Side) connectors.
Is the resistance below 1.2K Ohms between the (A856) 5-Volt Supply circuit and any Ground or Return circuit?
Yes
- Repair the (A856) 5-Volt Supply circuit for a short to the Ground or Return circuit. If the wiring harness and connector are okay, 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 Door Module. Door Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.