Circuit Description
The horizontal and vertical mirror position sensors are potentiometers powered by the door modules. Both the driver door module (DDM) and passenger front door module (PDM) determine the horizontal and vertical positions of their respective mirror based on the signal voltages received from the mirror position sensors. For more detailed information concerning power mirror operation refer to Outside Mirror Description and Operation .
DTC Descriptors
This diagnostic procedure supports the following DTCs:
| • | DTC B1580 Mirror Horizontal Position Sensor Circuit |
| • | DTC B1590 Mirror Vertical Position Sensor Circuit |
This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description .
DTC Symptom | DTC Symptom Descriptor |
|---|---|
08 | Sensor Out of Range/Open |
Conditions for Running the DTC
| • | The DDM and the PDM must be powered. |
| • | DTC B1325 Battery Voltage Out of Range, must not be current. |
Conditions for Setting the DTC
These DTCs will set if:
| • | A mirror position sensor signal voltage is below 0.25 volt for 2 seconds. |
| • | A mirror position sensor signal voltage is above 4.75 volts for 2 seconds. |
Action Taken When the DTC Sets
| • | The door module will ignore the failed position sensor. |
| • | The door module will ignore memory set or recall for the mirrors. |
| • | Manual mirror movements will be allowed. |
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | You issue a scan tool CLEAR DTCs command. |
| • | A history DTC will clear once 40 consecutive malfunction free ignition cycles have occurred. |
Diagnostic Aids
If the Personalization Option is activated on a vehicle that does not have Memory Mirrors, DTCs B1580 and B1590 will set in error. If these DTCs are set on a vehicle that does not have the Memory Mirrors option, refer to Body Control Module (BCM) Programming/RPO Configuration .
Thoroughly inspect the wiring and connectors. An incomplete inspection of the wiring and connectors may result in misdiagnosis causing part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections .
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Outside Rearview Mirror Schematics Connector End View Reference: Mirror Connector End Views | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 |
Does the scan tool indicate the voltage changes and is within the specified range? | 0.25-4.75 V | Go to Step 9 | Go to Step 3 |
3 |
Does the voltage measure near the specified value? | 4.75-5.50 V | Go to Step 4 | Go to Step 7 |
4 |
Does the scan tool indicate the voltage is near the specified value? | 0-0.25 V | Go to Step 5 | Go to Step 7 |
5 | Inspect for poor connections at the C 3 harness connector of the door module associated with the inoperative mirror. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 9 | Go to Step 6 |
6 | Replace the appropriate mirror. Refer to Outside Rearview Mirror Replacement . Did you complete the replacement? | -- | Go to Step 9 | -- |
7 | Inspect for poor connections at the C 3 harness connector of the door control module associated with the inoperative mirror. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 9 | Go to Step 8 |
8 | Replace the appropriate door control module. Refer to Control Module References for replacement, setup and programming. Did you complete the replacement? | -- | Go to Step 9 | -- |
9 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
