Circuit Description
The mirror position sensors are potentiometers powered by the door module for the mirror. The driver door module (DDM) and the front passenger door module (PDM), determine the horizontal and vertical position of their respective mirrors based on the signal voltages from the mirror position sensors. Each mirror has a vertical position sensor and a horizontal position sensor.
Conditions for Running the DTC
The DDM and the PDM must be powered, in communications with each other, and cannot have B1327 or B1328 set.
Conditions for Setting the DTC
These DTCs will set if:
| • | A mirror position sensor signal voltage is below 0.25 V for 2 seconds. |
| • | A mirror position sensor signal voltage is above 4.75 V for 2 seconds. |
Action Taken When the DTC Sets
Memory movements are disabled. Manual movements are not disabled.
Conditions for Clearing the DTC
The current DTC clears when the door module no longer senses the failure. The DTC is stored as a history DTC. The history DTC will clear either after 50 OFF/ON ignition cycles without a repeated failure or in response to a scan tool command.
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 B1583, B1593, B1613, and B1623 will be erroneously set. If these DTCs are set on a vehicle that does not have A45, 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 set the mirror memory switch to the new positions.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Outside Rearview Mirror Schematics | ||||
1 | Did you perform the Door Systems Diagnostic System Check? | -- | ||
2 | Is the vehicle equipped with the A45 Memory Mirrors option? | |||
3 |
Did you complete the deactivation? | Go to Body Control Module (BCM) Programming/RPO Configuration in Body Control System | ||
4 |
Does the scan tool indicate the voltage changes and is within the specified range? | 0.25-4.75 V | ||
5 |
Does the voltage measure near the specified value? | 4.75-5.50 V | ||
6 |
Does the scan tool indicate the voltage is near the specified value? | 0-0.25 V | ||
7 | Inspect for poor connections at the appropriate door module mirror harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
8 | Replace the appropriate mirror. Refer to Power Mirror Replacement . Did you complete the replacement? | -- | -- | |
9 | Replace the appropriate door module. Refer to Door Control Module Replacement . Did you complete the replacement? | -- | -- | |
10 |
Does the DTC reset? | -- | System OK | |
