Diagnostic Routine S

Diagnostic Routine S

Diagnostic Overview

A Single Power Window is Inoperative - LH Front

Refer to Wiring Diagram Set 100 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

The LH (Left Hand) front power window motor is bi-directional. Window direction is determined by the polarity of the voltage and ground being supplied to the motor from the master window control switch.

Pinpoint Test

1. CHECK THE VEHICLE WINDOW CONFIGURATION

1. Verify if the vehicle is equipped with power rear windows.

Is the vehicle equipped with power rear windows?







2. CHECK THE POWER WINDOW UPWARD AND/OR DOWNWARD OPERATION

1. Ignition OFF.

2. Disconnect: Master Window Control Switch C504A.

3. Ignition ON.

4. To check downward window operation, connect fused jumper wires:





5. To check upward window operation, connect fused jumper wires:





Does the LH (Left Hand) front window move up and/or down?







3. CHECK THE POWER WINDOW CIRCUITS FOR AN OPEN

1. Ignition OFF.

2. Disconnect: LH (Left Hand) Front Power Window Motor.

3. Measure:





Is the resistance less than 3 ohms for both measurements?







4. CHECK THE POWER WINDOW UPWARD AND/OR DOWNWARD OPERATION

1. Ignition OFF.

2. Disconnect: Master Window Control Switch C566A.

3. Ignition ON.

4. To check downward window operation, connect fused jumper wires:





5. To check upward window operation, connect fused jumper wires:





Does the LH (Left Hand) front window move up and/or down?







5. CHECK THE POWER WINDOW CIRCUITS FOR AN OPEN

1. Ignition OFF.

2. Disconnect: LH (Left Hand) Front Power Window Motor.

3. Measure:





Is the resistance less than 3 ohms for both measurements?