DTC Descriptor
DTC B1722 02: Mirror Power Fold Control Circuit Short to GroundDTC B1722 04: Mirror Power Fold Control Circuit Open/High Resistance
DTC B1722 01: Mirror Power Fold Control Circuit Short to Voltage
Diagnostic Fault Information
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Folding Mirror Motor Control | B1722 02 | B1722 04 | B1722 01 | -- |
Circuit/System Description
The driver door module (DDM) and passenger door module (PDM) switch the mirror fold motor control circuits to battery voltage and ground in response to mirror extend or retract command.
Conditions for Running the DTC
| • | Battery voltage must be between 9-16 volts. |
| • | The ignition switch is in the ON position. |
| • | A mirror extend or retract function must be active. |
Conditions for Setting the DTC
When the DDM or PDM switch the mirror fold motor control circuits to battery voltage and ground and one of the mirror fold motor control circuits are shorted to ground, shorted to battery or open.
Action Taken When the DTC Sets
The DDM or PDM will stop supplying battery voltage and ground to the mirror fold motor and the folding mirrors will be inoperative.
Conditions for Clearing the DTC
When the fault is no longer present, the door module changes the current DTC to a history DTC. The door module will clear the history DTC after 50 fault free ignition cycles, or in response to a scan tool command.
Reference Information
Schematic Reference
Outside Rearview Mirror Schematics
Connector End View Reference
Power Door Systems Connector End Views
Description and Operation
Outside Mirror Description and Operation
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
Ignition ON, command the applicable mirror fold function ON and OFF with a scan tool. The applicable mirror should fold when commanded.
Circuit/System Testing
- Ignition OFF, disconnect the C1 harness connector at the applicable outside rearview mirror.
- Ignition OFF, test for less than 1.0 ohm of resistance between the control circuit terminal 8 and ground.
- Ignition OFF, test for less than 1.0 ohm of resistance between the control circuit terminal 7 and ground.
- Connect a test lamp between control circuit terminal 7 and control circuit terminal 8.
- Ignition ON, command the applicable mirror fold function ON and OFF with a scan tool. The test lamp should turn ON when commanding the retract and extend states.
- If all circuits test normal, test or replace the applicable outside rearview mirror.
| ⇒ | If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If circuits test normal, replace the applicable front door module. |
| ⇒ | If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If circuits test normal, replace the applicable front door module. |
| ⇒ | If the test lamp remains OFF during either of the commands, test for a short to ground on either control circuit. If the circuits test normal, replace the applicable front door module. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
