Circuit Description
The LH mirror and the RH mirror horizontal position sensors are potentiometers. The driver door module (DDM) and the passenger door module (PFDM) determine the horizontal position of the mirrors based on the signal voltage from these sensors.
Conditions for Running the DTC
The DDM and the PFDM must be powered up.
Conditions for Setting the DTC
The code will be set when the signal voltage of the mirror horizontal position sensor is above or below the range limits, within 10 percent, for 30 seconds in the requested position. The voltage range limits depend upon what the actual voltage of the 5-volt reference circuit is, and will vary from vehicle to vehicle and from module to module. Use the table below to determine what the failed voltage range limits are for your particular vehicle/module.
If the Mirror 5-volt reference voltage indicated on the scan tool is closest to: | The code will be set when the sensor signal voltage is: | The code will be set when the sensor signal voltage is: |
|---|---|---|
5.0 volts | 0-0.60 volts | 4.7-5.0 volts |
4.4 volts | 0-0.53 volts | 4.1-4.4 volts |
3.8 volts | 0-0.45 volts | 3.6-3.8 volts |
Action Taken When the DTC Sets
Mirror horizontal memory movements are disabled. Manual movements are not disabled.
Conditions for Clearing the DTC
When the door modules no longer sense the failure .
Diagnostic Aids
| • | If the Personalization Option in the dash integration module (DIM) is activated on a vehicle that does not have the A45 Memory Mirrors option, DTCs B1586 and B1591 will be erroneously set. If DTCs B1586 and B1591 are set on a vehicle that does not have the A45 Memory Mirrors option, refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System to deactivate the option. |
| • | After readjusting the mirror positions, be sure to reset the mirror memory switch to the new positions. |
| • | If this DTC is set as a history DTC, but not as a current DTC, remove the fuse for the door module that set the DTC for 10 seconds, then reinstall it. |
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Outside Rearview Mirror Schematics Connector End View Reference: Power Door Systems Connector End Views | ||||
1 | Did you perform the Door Systems Diagnostic System Check? | -- | Go to Step 2 | |
2 | Is the vehicle equipped with the A45 Memory Mirrors option? | -- | Go to Step 4 | Go to Step 3 |
3 |
Did you complete the deactivation? | -- | Go to Step 12 | -- |
4 |
Does the scan tool indicate that the voltage increases with the Right adjustments and decreases with the Left adjustments and is within the specified value? | 0.25-5.0 V | Go to Step 12 | Go to Step 5 |
5 |
Does the scan tool indicate the voltage is greater than the specified value? | 3.6 V | Go to Step 6 | Go to Step 9 |
6 |
Does the scan tool indicate the voltage is within the specified value? | 0-0.75 V | Go to Step 7 | Go to Step 9 |
7 | Measure the voltage of the 5-volt reference circuit at the door module pin. Does the voltage measure within the specified value? | 3.50-5.00 V | Go to Step 8 | Go to Step 9 |
8 | Inspect for poor connections at the C5 harness connector of the door module associated with the inoperative mirror. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 12 | Go to Step 10 |
9 | Inspect for poor connections at the C5 harness connector of the door module associated with the inoperative mirror. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 12 | Go to Step 11 |
10 | Replace the inoperative mirror . Refer to Power Mirror Replacement . Did you complete the replacement? | -- | Go to Step 12 | -- |
11 | Replace the inoperative door module. Refer to Door Control Module Replacement Did you complete the replacement? | -- | Go to Step 12 | -- |
12 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
