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 B1544 01: Mirror Motors Common Circuit Short to BatteryDTC B1544 02: Mirror Motors Common Circuit Short to Ground
DTC B1544 04: Mirror Motors Common Circuit Open
DTC B1600 01: Mirror Motor Verticle Circuit Short to Battery
DTC B1600 02: Mirror Motor Verticle Circuit Short to Ground
DTC B1600 04: Mirror Motor Verticle Circuit Open
DTC B1605 01: Mirror Motor Horizontal Circuit Short to Battery
DTC B1605 02: Mirror Motor Horizontal Circuit Short to Ground
DTC B1605 04: Mirror Motor Horizontal Circuit Open
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Left/Right Mirror Motor Left Control | B1605 02 | B1605 04 | B1605 01 | -- |
Left/Right Mirror Motor - Up/Right Control | B1544 02 | B1544 04 | B1544 01 | -- |
Left/Right Mirror Motor Down Control | B1600 02 | B1600 04 | B1600 01 | -- |
Circuit/System Description
The Driver Door Switch (DDS) or Passenger Door Switch (PDS) controls the mirror horizontal and vertical motors through the use of bi-directional motor controls. When the mirror is commanded up, voltage is supplied to the mirror vertical motor through the Left/Right Mirror Motor-Up/Right Control circuit and ground is supplied through the Left/Right Mirror Motor Down Control circuit. When the mirror is commanded down, voltage is supplied to the mirror vertical motor through the Left/Right Mirror Motor Down Control circuit and ground is supplied through the Left/Right Mirror Motor-Up/Right Control circuit.
Horizontal controls operate in the same manner with the Left/Right Mirror Motor-Up/Right Control circuit supplying voltage and the Left/Right Mirror Motor Left Control circuit supply a ground to the mirror horizontal motor when the mirror is commanded right. When the mirror is commanded left, voltage is supplied to the mirror horizontal motor through the Left/Right Mirror Motor Left Control circuit and ground is supplied through the Left/Right Mirror Motor-Up/Right Control circuit.
Conditions for Running the DTC
The power mirror is being commanded left, right, up, or down.
Conditions for Setting the DTC
B1544
An improper voltage level is detected on the Left/Right Mirror Motor-Up/Right Control circuit while the mirror is being commanded.
B1600
An improper voltage level is detected on the Left/Right Mirror Motor Down Control circuit while the mirror is being commanded.
B1605
An improper voltage level is detected on the Left/Right Mirror Motor Left Control circuit while the mirror is being commanded.
Action Taken When the DTC Sets
Mirror movement is 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 C1 at the outside rearview mirror.
- Install a test lamp between the control circuit terminal 11 and the control circuit terminal 10.
- Ignition ON, commanded the mirror left and right using the mirror directional switch. The test lamp should turn ON and OFF as the mirror commanded to the left and right.
- Ignition OFF, install a test lamp between the control circuit terminal 10 and the control circuit terminal 9.
- Ignition ON, commanded the mirror up and down using the mirror directional switch. The test lamp should turn ON and OFF as the mirror commanded up and down.
- If all circuits test normal, test or replace the outside rearview mirror motor.
| ⇒ | If the test lamp does not turn ON and OFF when cycling between the commanded states, test both control circuit for a short to voltage, a short to ground, or an open/high resistance. If the circuits test normal, replace the applicable door switch. |
| ⇒ | If the test lamp does not turn ON and OFF when cycling between the commanded states, test both control circuit for a short to voltage, a short to ground, or an open/high resistance. If the circuits test normal, replace the applicable door switch. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for DDS or PDS replacement, setup, and programming |
