B1722

DTC B1722

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.

DTC Descriptors

DTC B1722 01

-
Mirror Power Fold Circuit Short to Battery

DTC B1722 02

-
Mirror Power Fold Circuit Short to Ground

DTC B1722 04

-
Mirror Power Fold Circuit Open

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.

Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

An improper voltage level is seen on either the folding mirror motor retract control circuit or the folding mirror motor extend control circuit.

Action Taken When the DTC Sets

Power folding mirror operations are suspended as long as the fault is present.

Conditions for Clearing the DTC

* A current DTC will clear when the fault is no longer present.

* A history DTC will clear after 40 fault-free ignition cycles.

Reference Information

Schematic Reference

Outside Rearview Mirror Schematics Outside Rearview Mirror Schematics

Connector End View Reference

Component Connector End Views A/C Compressor Clutch

Description and Operation

Outside Mirror Description and Operation (Power Mirrors) Outside Mirror (Power Mirrors)Outside Mirror Description and Operation (Heated Mirrors) Outside Mirror (Heated 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 References

Control Module References Programming and Relearning for scan tool information

Circuit/System Verification

Ignition ON, using the folding mirror switch, the left and right rearview mirrors should extend and retract as commanded.

Circuit/System Testing

1. Ignition OFF, disconnect the X1 harness connector at the appropriate outside rearview mirror.

2. Connect a test lamp between control circuit terminal 1 and control circuit terminal 2.

3. Command the Mirror Fold to Retract and Extend with a scan tool. The test lamp should turn ON when commanding the retract and extend states.

• If the test lamp remains OFF during either of the commands, test for a short to voltage, short to ground, or an open/high resistance on either control circuit. If the circuits test normal, replace the door module.

4. If all circuits test normal, test or replace the outside rearview mirror.

Repair Instructions

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

* Power Mirror Replacement Power Mirror Replacement

* Control Module References Programming and Relearning for DDM or PDM replacement, setup, and programming