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.
How To Proceed With Troubleshooting
HINT:
- Use the following procedure to troubleshoot the power window control system.
- The intelligent tester should be used in steps 3 and 5.
- VEHICLE BROUGHT TO WORKSHOP
- CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
- CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM
- Use the intelligent tester, inspect the LIN communication function to ensure there are no malfunctions in the communication system.
Result
RESULT CHARTResult Proceed to No DTCs output A DTCs output B
B: GO TO DIAGNOSTIC TROUBLE CODE CHART
A: Go to Next Step
- Use the intelligent tester, inspect the LIN communication function to ensure there are no malfunctions in the communication system.
- PROBLEM SYMPTOMS TABLE
HINT:
See PROBLEM SYMPTOMS TABLE .
- OVERALL ANALYSIS AND TROUBLESHOOTING
- Data list/Active test
HINT:
See DATA LIST / ACTIVE TEST .
- Circuit inspection
- Terminal of ECU
HINT:
See TERMINALS OF ECU .
- Data list/Active test
- ADJUST, REPAIR OR REPLACE
- RESET POWER WINDOW MOTOR
HINT:
See OPERATION CHECK .
NEXT: END
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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.
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