Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit/System Verification
- Ignition - On / Vehicle - In Service Mode
- Operate the component: Left Rear Window Switch @ S79D Window Switch - Driver - Pressed & Pulled
Verify the scan tool parameter:
- Left Rear Window Main Control Down Switch = Inactive & Active
- Left Rear Window Main Control Express Switch = Inactive & Active
- Left Rear Window Main Control Up Switch = Inactive & Active
- If not the specified state
Replace the component: S79D Window Switch - Driver
- Go to next step: If the specified state
- Operate the component: Right Rear Window Switch @ S79D Window Switch - Driver - Pressed & Pulled
Verify the scan tool parameter:
- Right Rear Window Main Control Down Switch = Inactive & Active
- Right Rear Window Main Control Express Switch = Inactive & Active
- Right Rear Window Main Control Up Switch = Inactive & Active
- If not the specified state
Replace the component: S79D Window Switch - Driver
- Go to next step: If the specified state
- Operate the component: Passenger Window Switch @ S79D Window Switch - Driver - Pressed & Pulled
Verify the scan tool parameter:
- Front Passenger Window Main Control Down Switch = Inactive & Active
- Front Passenger Window Main Control Express Switch = Inactive & Active
- Front Passenger Window Main Control Up Switch = Inactive & Active
- If not the specified state
Replace the component: S79D Window Switch - Driver
- Go to next step: If the specified state
- Verify DTC B3205 4B is not set.
- If DTC B3205 4B is set
Use the following procedure: Window Motor Programming - Express Function .
- Go to next step: If the DTC is not set
- If DTC B3205 4B is set
- Operate the component: Driver Window Switch @ S79D Window Switch - Driver - Pressed & Pulled
Verify the component works as specified:
- M74D Window Motor - Driver = Up
- M74D Window Motor - Driver = Express Up
- M74D Window Motor - Driver = Down
- M74D Window 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 Window Switch - Passenger - Pressed & Pulled
Verify the component works as specified:
- M74P Window Motor - Passenger = Up
- M74P Window Motor - Passenger = Down
- M74P Window 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: S79LR Window Switch - Left Rear - Pressed & Pulled
Verify the component works as specified:
- M74LR Window Motor - Left Rear = Up
- M74LR Window Motor - Left Rear = Down
- M74LR Window Motor - Left Rear = Express 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: S79RR Window Switch - Right Rear - Pressed & Pulled
Verify the component works as specified:
- M74RR Window Motor - Right Rear = Up
- M74RR Window Motor - Right Rear = Down
- M74RR Window Motor - Right Rear = Express 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
- All OK.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.