B1605

DTC B1605

Circuit Description
The driver door module (DDM) and the passenger door module (PDM) each provide motor control output functions for their respective mirrors . These output controls allow each door module to command their respective power mirrors in horizontal and vertical positions. The DDS sends a serial data message to the door modules when the mirror switch is activated to the up, down, left or right positions. When the door modules detect an active mirror command from the DDS, they will command the respective mirror motor in the appropriate direction. Each door module commands their respective mirror motors by applying a ground or voltage to the control circuit, depending on the desired mirror position. If the DDM or PDM detects a short to ground or voltage condition in a mirror motor control circuit for greater than 2 seconds, a DTC is set.

^ DTC B1600 LF/Driver Mirror Motor 1 Circuit
^ DTC B1605 LF/Driver Mirror Motor 2 Circuit

Conditions for Setting the DTC
^ The DDM or PDM detects a short to ground or voltage condition in a mirror motor control circuit.
^ Condition must be present for 2 seconds.

Action Taken When the DTC Sets
Stores DTC B1600 or B1605 in DDM or PDM memory.

Conditions for Clearing the DTC
^ The DDM or PDM no longer detects a short to ground or voltage condition in a mirror motor control circuit for longer than 2 seconds, and:
^ The DTC is cleared using a scan tool.

Diagnostic Aids
^ The following conditions may cause an intermittent malfunction:
- There is an intermittent short to ground or voltage in a mirror motor control circuit.
- A mirror motor is shorted internally.
^ If the DTC does not reset after the code is cleared, then the problem may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. Tests for proper operation of the outside rearview mirror.
3. Tests for a shorted outside rearview mirror.
5. Tests for a short to ground or voltage in the vertical mirror motor control circuits.
6. Tests for a short to ground or voltage in the horizontal mirror motor control circuits.