Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC B1722 01: Mirror Power Fold Circuit Short to BatteryDTC B1722 02: Mirror Power Fold Circuit Short to Ground
DTC B1722 04: Mirror Power Fold Circuit Open
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Folding Mirror Motor Retract Control | B1722 02 | B1722 04 | B1722 01 | -- |
Folding Mirror Motor Extend Control | B1722 02 | B1722 04 | B1722 01 | -- |
Circuit/System Description
The Driver Door Switch (DDS) and Passenger Door Switch (PDS) 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
Mirror folding is requested.
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 so 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 malfunction-free ignition cycles. |
Reference Information
Schematic Reference
Outside Rearview Mirror Schematics
Connector End View Reference
Description and Operation
Outside Mirror Description and Operation
Electrical Information Reference
Circuit/System Testing
- Ignition OFF, disconnect the harness connector X1 at the outside rearview mirror.
- Install a test lamp between the control circuit terminal 1 and the control circuit terminal 2.
- Ignition ON, commanded the mirrors to extend and retract using the power folding switch. The test lamp turn ON and OFF when changing between the commanded states.
- If all circuits test normal, test or replace the outside rearview mirror motor.
| ⇒ | If the test lamp is always ON, test both control circuits for a short to voltage. If the circuit tests normal, replace the appropriate door switch. |
| ⇒ | If the test lamp is always OFF, test both control circuits for a short to ground or an open/high resistance. If the circuit tests normal, replace the appropriate door switch. |
Component Testing
- Ignition OFF, disconnect the harness connector X1 at the outside rearview mirror.
- Test for 6-8 ohms of resistance between the control terminal 1 and the control terminal 2.
| ⇒ | If not within the specified range, replace the outside rearview mirror motor. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for DDS or PDS replacement, setup, and programming |
