GM Service Manual Online
For 1990-2009 cars only

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 B3824 00: Right Rear Window Relay Power Circuit

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

DDS B+

1

1

--

--

LR Window Switch B+

3

3

--

--

PDS B+

2

2

--

--

RR Window Switch B+

4

4

--

--

LR Window Switch Down Signal

B3820 00

B3820 00

B3820 00

--

LR Window Switch Up Signal

B3819 00

B3819 00

B3819 00

--

RR Window Switch Down Signal

B3823 00

B3823 00

B3823 00

--

RR Window Switch Up Signal

B3822 00

B3822 00

B3822 00

--

Passenger Window Motor Control

B3205 00

B3205 0B

B3205 00

--

Driver Window Motor Control

B3205 00

B3205 0B

B3205 00

--

LR Window Motor Control

3

3

3

--

RR Window Motor Control

4

4

4

--

LR Window Switch Lockout Control

B3821 00

B3821 00

B3821 00

--

RR Window Switch Lockout Control

B3824 00

B3824 00

B3824 00

--

LR Window Switch Ground

--

3

3

--

RR Window Switch Ground

--

4

4

--

1. Driver Window Malfunction

2. Passenger Window Malfunction

3. Left Rear Window Malfunction

4. Right Rear Window Malfunction

Circuit/System Description

The body control module (BCM) supplies voltage to the rear window switches allowing for normal window operation from the rear switches. If the rear window lockout function is enabled, the BCM will not supply voltage to the rear window switches and the rear windows will only operate when the BCM receives a command to operate the appropriate rear window UP or DOWN 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.

Conditions for Setting the DTC

The BCM detects a fault in the right rear window lockout circuit.

Action Taken When the DTC Sets

The right rear power window will be inoperative.

Conditions for Clearing the DTC

    • The DTC will be current for as long as the fault is present.
    • When the fault is no longer present, the DTC will be a history DTC.
    • A history DTC will clear after 50 ignition cycles

Reference Information

Schematic Reference

Moveable Window Schematics

Connector End View Reference

Window Systems Connector End Views

Power Windows Description and Operation

Power Windows Description and Operation

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

    •  Scan Tool Data Definitions
    •  Scan Tool Data List
    •  Scan Tool Output Controls

Circuit/System Verification

Ignition ON, command the rear passenger power windows UP and DOWN with a scan tool, the rear passenger power windows should perform the UP and DOWN command.

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the right rear window switch.
  2. Important: Check the lockout switch on the driver door switch and verify the rear window switches are enabled.

  3. Ignition ON, test for greater than 10 volts between the control circuit terminal D and ground.
  4. If less than the specified range, test the control circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the BCM.
  5. If the circuits test normal replace the right rear window switch.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Rear Side Door Window Switch Replacement
    •  Control Module References for BCM replacement, programming, and setup