For 1990-2009 cars

### 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 Descriptors

DTC B3819 00: Left Rear Window Up Control Circuit
DTC B3820 00: Left Rear Window Down Control Circuit
DTC B3822 00: Right Rear Window Up Control Circuit
DTC B3823 00: Right Rear Window Down Control Circuit

### Diagnostic Fault Information

Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance
--- | --- | --- | --- | ---
Driver Door Module B+ | U0199 00 | U0199 00 | -- | --
Driver Window Motor B+ | U1511 00 | U1511 00 | -- | B320A 4B
LR Window Switch B+ | 3 | 3 | -- | --
Passenger Door Module B+ | U0200 00 | U0200 00 | -- | --
Passenger Window Motor B+ | U1511 00 | U1511 00 | -- | B320A 4B
RR Window Switch B+ | 4 | 4 | 4 | --
Driver Window Motor Serial Data | U1511 00 | U1511 00 | 1 | B320A 4B
Passenger Window Motor Serial Data (AXC) | 2 | 2 | 2 | --
LR Window Motor Control | 3 | 3 | 3 | --
Passenger Window Motor Control (AXE) | B3205 00 | B3205 0B | B3205 00 | --
RR Window Motor Control | 4 | 4 | 4 | --
Window Master Switch LR Down Control | B3820 00 | B3820 00 | B3820 00 | --
Window Master Switch Lockout Control | B3821 00 or B3824 00 | B3821 00 or B3824 00 | B3821 00 or B3824 00 | --
Window Master Switch LR Up Control | B3819 00 | B3819 00 | B3819 00 | --
Window Master Switch RR Down Control | B3823 00 | B3823 00 | B3823 00 | --
Window Master Switch RR Up Control | B3822 00 | B3822 00 | B3822 00 | --
Driver Door Module Ground | -- | U1511 00 | 1 | --
LR Window Switch Ground | -- | 3 | 3 | --
Passenger Door Module Ground | -- | U1511 00 | 2 | --
Passenger Window Motor Ground (AXC) | -- | 2 | 2 | --
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) monitors the window UP/DOWN command from the driver door module(DDM). When the rear window UP or DOWN command is received, the BCM sends a signal to the appropriate rear window switch. The rear window switches continuously monitor the up and down signal circuits, if no function is being commanded, the signal voltage is at approximately B+ voltage. If the UP or DOWN function is commanded, the BCM signal voltage drops approximately 0.5 volts and the appropriate rear window switch will then command the window in the UP or DOWN direction.

### Conditions for Running the DTC

Battery voltage is between 9-16 volts.

### Conditions for Setting the DTC

#### B3819 00

The BCM detects a fault in the left rear window up circuit.

#### B3820 00

The BCM detects a fault in the left rear window down circuit.

#### B3822 00

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

#### B3823 00

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

### Action Taken When the DTC Sets

The left or right rear power window will be inoperative from the driver master control.

### 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

Component Connector End Views

#### 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

Control Module References for scan tool information

### Circuit/System Verification

Command the appropriate rear door window UP and DOWN with a scan tool. The rear door window should perform the UP and DOWN function.

### Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate rear window switch.
2. Ignition ON, test for greater than 9 volts between the signal circuit terminal A and ground while commanding the rear window UP with a scan tool.

⇒ | If less than the specified range, test the signal circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the BCM.

3. Test for greater than 9 volts between the signal circuit terminal C and ground while commanding the rear window DOWN with a scan tool.

⇒ | If less than the specified range, test the signal circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the BCM.

4. If all circuits test normal, replace the 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, setup, and programming