Diagnostic Instructions
DTC Descriptor
DTC B3823 00: Right Rear Window Down Control Circuit
Circuit/System Description
The body control module (BCM) energizes the control side of the right rear power window down relay upon receiving a GMLAN message from the driver door switch (DDS).
Conditions for Running the DTC
| • | Battery voltage is between 9-16 volts. |
| • | The ignition switch is in the ON position. |
| • | The BCM has attempted to energize the right rear power window down relay control circuit. |
Conditions for Setting the DTC
The right rear window down circuit is shorted to ground.
Action Taken When the DTC Sets
The BCM will not attempt right rear window down operation.
Conditions for Clearing the DTC
| • | When the output request is not active the DTC will be a history status code. |
| • | The history code will clear after 50 fault-free ignition cycles or by using the scan tool clear DTCs feature. |
Reference Information
Schematic Reference
Moveable Window Schematics
Connector End View Reference
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Disconnect the right rear window switch connector and connect a test lamp from the down signal circuit to ground.
- Ignition ON, verify that the test lamp illuminates when the right rear down switch on the DDS is activated.
| ⇒ | If the test lamp does not illuminate test the right rear window down signal circuit for a short to ground. If the circuit tests normal replace the BCM. |
- If the circuits test normal replace the right rear window switch.
Repair Instructions
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
