Circuit/System Verification

Vehicle in Service Mode.
Verify the driver window functions while commanding the Driver Window Motor Up and Down with a scan tool.
- If the window does not move UP and DOWN as commanded
  Refer to Circuit/System Testing - Driver Window Motor Malfunction.
- If the window moves UP and DOWN as commanded
Verify the driver window functions while commanding the window UP, express UP, DOWN and express DOWN with the S146 Window/Outside Rearview Mirror Switch-Driver.
- If the driver window does not move UP or DOWN as commanded
  Refer to Circuit/System Testing - Driver Window Switch Malfunction.
- If the driver window does not express UP or express DOWN
  Normalize the M74D Window Motor-Driver, refer to Window Motor Programming - Express Function .
- If after normalization, the driver window does not express UP or express DOWN
  Refer to Circuit/System Testing - Driver Window Switch Malfunction.
- If the driver window moves UP, express UP, DOWN and express DOWN as commanded
Verify the scan tool parameters listed below change when pressing and pulling the passenger and rear window control switches on the S146 Window/Outside Rearview Mirror Switch-Driver;
- Left Rear Main Control Down Switch - Inactive and Active
- Left Rear Main Control Express Switch - Inactive and Active
- Left Rear Main Control Up Switch - Inactive and Active
- Right Rear Main Control Down Switch - Inactive and Active
- Right Rear Main Control Express Switch - Inactive and Active
- Right Rear Main Control Up Switch - Inactive and Active
- Front Passenger Main Control Down Switch - Inactive and Active
- Front Passenger Main Control Express Switch - Inactive and Active
- Front Passenger Main Control Up Switch - Inactive and Active
- If any parameter does not change
  Refer to Circuit/System Testing - Driver Window Switch Malfunction.
- If the parameters change
Verify the passenger, left rear and right rear window functions while commanding the Passenger Window Motor, Left Rear Window Motor and Right Rear Window Motor Up and Down with a scan tool.
- If the window does not move UP and DOWN as commanded
  Refer to Circuit/System Testing - Passenger/Rear Power Window Inoperative.
- If the window moves UP and DOWN as commanded
All OK.