Power Mirror Folding Malfunction

Power Mirror Folding Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information





Circuit/System Description

The Driver Door module (DDM) and Passenger Door Module (PDM) control the power folding or power extending functions of the outside rearview mirrors. The folding mirror motors are controlled by using bi-directional motor controls through the folding mirror motor retract control circuit and the folding mirror motor extend control circuit.

Reference Information
Schematic Reference

Outside Rearview Mirror Schematics (Outside Rearview Mirror Schematics)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
Description and Operation

Outside Mirror Description and Operation (Heated Mirrors) (Outside Mirror (Heated Mirrors))Outside Mirror Description and Operation (Power Mirrors) (Outside Mirror (Power Mirrors))
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Control Module References) for scan tool information.

Circuit/System Verification

1. Ignition ON, observe the scan tool Mirror Fold Switch parameter while cycling the mirror fold switch between the extend and retract positions. The parameter should change between Idle, Extend, and Retract.

• If the parameter does not cycle between the specified values, replace the DDM.

2. Command the power folding mirrors to extend and retract using the mirror fold switch. Both mirrors should extend and retract as commanded.

Circuit/System Testing

1. Ignition OFF, disconnect the X7 harness connector at the appropriate door module.
2. Ignition ON, verify a test lamp does not illuminate between the following circuit terminals and ground:

* Control circuit terminal 1
* Control circuit terminal 2

• If the test lamp illuminates, test the appropriate circuit for a short to voltage.

3. Ignition OFF, test for infinite resistance between the following circuits and ground:

* Control circuit terminal 1
* Control circuit terminal 2

• If less than the specified value, test the appropriate circuit for a short to ground. If the circuits test normal, test or replace the rearview mirror.

4. Test for 5-15 ohms of resistance between the control circuit terminal 1 and the control circuit terminal 2.

• If not within the specified range, test both control circuits for an open/high resistance. If the circuits test normal, test or replace the rearview mirror.

5. If all circuits test normal, replace the door module.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Outside Rearview Mirror Motor Replacement (Service and Repair)
* Control Module References (Control Module References) for DDM or PDM replacement, setup, and programming