B1605

DTC B1600, B1605, B1630, or B1635

Circuit Description

The memory seat module (MSM) monitors the outputs to the mirror motors during mirror operation. During normal operation, the mirror motors are checked against out-of-range limits. If the MSM sees the mirror motor output range high, a DTC B1600, B1605, B1630, or B1635 is set and the mirror motor output and the memory recall is disabled for the motor affected.

DTC Descriptors

This diagnostic procedure supports the following DTCs:

* DTC B1600 Driver Mirror Motor Vertical Circuit
* DTC B1605 Driver Mirror Motor Horizontal Circuit
* DTC B1630 Right Front Mirror Motor Vertical Circuit
* DTC B1635 Right Front Mirror Motor Horizontal Circuit

Conditions for Running the DTC

Battery input voltage between 9-16 volts

Conditions for Setting the DTC

* The outside rearview mirror motor circuit short to voltage
* The outside rearview mirror motor circuit short to ground

Action Taken When the DTC Sets

The MSM will disable the affected motor output.

Conditions for Clearing the DTC

* The MSM no longer detects the mirror motor circuit short to voltage.
* The MSM no longer detects the mirror motor circuit short to ground.
* DTC will clear after 50 consecutive ignition cycles.

Diagnostic Aids

If the DTC does not reset after it has been cleared, then the malfunction may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics

Test Description

Step 1 - Step 11:

Step 12:

The numbers below refer to the step numbers on the diagnostic table.
2. Listen for the motor operation. Command both the Up and Down or Right and Left states. Repeat the commands, as necessary.
3. This step verifies that the MSM is providing output to the mirror motor.
4. This step verifies that the MSM is providing output to the mirror assembly.
5. This step tests the mirror motor control circuits for a short to voltage or ground.