Circuit/System Verification

Ignition - On / Vehicle - In Service Mode
Operate the component: Driver Window Switch@S79D Front Side Door Window Control Switch-Driver - Pressed & Pulled
Verify the component works as specified:
- M74D Front Side Door Window Regulator Motor-Driver = Up
- M74D Front Side Door Window Regulator Motor-Driver = Express Up
- M74D Front Side Door Window Regulator Motor-Driver = Down
- M74D Front Side Door Window Regulator Motor-Driver = Express Down
- If the component does not work as specified
  Refer to: Circuit/System Testing - Test 1
- Go to next step: If the component works as specified
Operate the component: S79P Front Side Door Window Switch - Passenger - Pressed & Pulled
Verify the component works as specified:
- M74P Front Side Door Window Regulator Motor-Passenger = Up
- M74P Front Side Door Window Regulator Motor-Passenger = Express Up
- M74P Front Side Door Window Regulator Motor-Passenger = Down
- M74P Front Side Door Window Regulator Motor-Passenger = Express Down
- If the component does not work as specified
  Refer to: Circuit/System Testing - Test 2
- Go to next step: If the component works as specified
Operate the component: Window Lockout Switch - Pressed
Verify the scan tool parameter: Left Rear Window Lockout Status = Inactive & Active
- If the parameter does not change
  Replace the component: S79D Front Side Door Window Control Switch-Driver
- Go to next step: If the parameter changes
Window Lockout Switch = Not Activated
Operate the component: S79LR Rear Side Door Window Switch-Left - Pressed & Pulled
Verify the component works as specified:
- M74LR Rear Side Door Window Regulator Motor-Left = Up
- M74LR Rear Side Door Window Regulator Motor-Left = Down
- If the component does not work as specified
  Refer to: Circuit/System Testing - Test 3
- Go to next step: If the component works as specified
Operate the component: Window Lockout Switch - Pressed
Verify the scan tool parameter: Right Rear Window Lockout Status = Inactive & Active
- If the parameter does not change
  Replace the component: S79D Front Side Door Window Control Switch-Driver
- Go to next step: If the parameter changes
Window Lockout Switch = Not Activated
Operate the component: S79RR Rear Side Door Window Switch-Right - Pressed & Pulled
Verify the component works as specified:
- M74RR Rear Side Door Window Regulator Motor-Right = Up
- M74RR Rear Side Door Window Regulator Motor-Right = Down
- If the component does not work as specified
  Refer to: Circuit/System Testing - Test 4
- Go to next step: If the component works as specified
Operate the component: Left Rear Window Switch@S79D Front Side Door Window Control Switch-Driver - Pressed & Pulled
Verify the component works as specified:
- M74LR Rear Side Door Window Regulator Motor-Left = Up
- M74LR Rear Side Door Window Regulator Motor-Left = Down
- If the component does not work as specified
  Replace the component: S79D Front Side Door Window Control Switch-Driver
- Go to next step: If the component works as specified
Operate the component: Right Rear Window Switch@S79D Front Side Door Window Control Switch-Driver - Pressed & Pulled
Verify the component works as specified:
- M74RR Rear Side Door Window Regulator Motor-Right = Up
- M74RR Rear Side Door Window Regulator Motor-Right = Down
- If the component does not work as specified
  Replace the component: S79D Front Side Door Window Control Switch-Driver
- Go to next step: If the component works as specified
Operate the component: Passenger Window Switch@S79D Front Side Door Window Control Switch-Driver - Pressed & Pulled
Verify the component works as specified:
- M74P Front Side Door Window Regulator Motor-Passenger = Up
- M74P Front Side Door Window Regulator Motor-Passenger = Express Up
- M74P Front Side Door Window Regulator Motor-Passenger = Down
- M74P Front Side Door Window Regulator Motor-Passenger = Express Down
- If the component does not work as specified
  Replace the component: S79D Front Side Door Window Control Switch-Driver
- Go to next step: If the component works as specified
A fault that is not currently present may have been caused by a intermittent condition.