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 CircuitDTC 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 | -- | -- |
LR Window Switch B+ | 1, 3 | 3 | -- | -- |
Front Passenger Door Module B+ | U0200 00 | U0200 00 | -- | -- |
RR Window Switch B+ | 2, 4 | 4 | -- | -- |
Power Window Switch Right Rear Down Signal | B3823 00 | B3823 00 | B3823 00 | -- |
Power Window Switch Right Rear Up Signal | B3822 00 | B3822 00 | B3822 00 | -- |
Power Window Switch Left Rear Down Signal | B3820 00 | B3820 00 | B3820 00 | -- |
Power Window Switch Left Rear Up Signal | B3819 00 | B3819 00 | B3819 00 | -- |
Power Window Lockout Left Rear Control | B3821 00 | B3821 00 | B3821 00 | -- |
Power Window Lockout Right Rear Control | B3824 00 | B3824 00 | B3824 00 | -- |
LR Window Motor Control | 3 | 3 | 3 | -- |
Passenger Window Motor Control | B3205 00 | B3205 0B | B3205 00 | -- |
RR Window Motor Control | 4 | 4 | 4 | -- |
Driver Window Motor Control | B3205 00 | B3205 0B | B3205 00 | -- |
LR Window Switch Ground | -- | 3 | 3 | -- |
RR Window Switch Ground | -- | 4 | 4 | -- |
RR Window Switch Ground | -- | 4 | 4 | -- |
Driver Door Module Ground | -- | U0199 00 | U0199 00 | -- |
Front Passenger Door Module Ground | -- | U0200 00 | U0200 00 | -- |
1. Driver Window Malfunction 2. Passenger Window Malfunction 3. Left Rear Window Malfunction 4. Right Rear Window Malfunction | ||||
Circuit/System Description
The rear window switches continuously monitor the up/down signal voltage sent by the body control module (BCM) and compares the signal voltage to the B+ voltage. If no command is being sent, the signal is at or near B+ voltage, when the up or down function has been commanded the signal voltage drops by approximately 0.5 volts and the appropriate rear window switch will command the up or down function.
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
Connector End View Reference
Window Systems Connector End Views
Description and Operation
Power Windows Description and Operation
Electrical Information Reference
Scan Tool Reference
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.
| ⇒ | If the LR or RR window sets B3819 00 or B3822 00 during the UP command, refer to B3819 00 or B3822 00. |
| ⇒ | If the LR or RR window sets B3820 00 or B3823 00 during the DOWN command, refer to B3820 00 or B3823 00. |
Circuit/System Testing
B3819 00 or B3822 00
- Ignition OFF, disconnect the harness connector at the appropriate rear window switch.
- Ignition ON, test for more than 10 volts between the power window switch rear up signal circuit terminal A and ground while commanding the rear window UP with a scan tool.
- If the circuit tests normal, replace the rear window switch.
| ⇒ | 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. |
B3820 00 or B3823 00
- Ignition OFF, disconnect the harness connector at the appropriate rear window switch.
- Ignition ON, test for more than 10 volts between the power window switch rear down signal circuit terminal C and ground while commanding the rear window DOWN with a scan tool.
- If the circuit tests normal, replace the rear window switch.
| ⇒ | 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. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for BCM replacement, setup, and programming |
