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.
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HOMESERVICE MANUALSTOYOTA2002HIGHLANDER 4WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISWINDOWS AND GLASSWINDOWSTESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURESSYMPTOM DIAGNOSTIC PROCEDURESREMOTE OPERATION VIA MASTER SWITCH IS IMPOSSIBLE
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Remote Operation Via Master Switch Is Impossible
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Remote Operation Via Master Switch Is Impossible
Remote Operation Via Master Switch is Impossible in the Other Seat (Operation Via Each Door Switch is Possible)
CIRCUIT DESCRIPTION
When the ignition switch is ON, the master switch (door ECU) sends a remote switch signal for the other seats multiply to the body ECU then the body ECU drive's the power window motor for the other seats.
NOTE: Power window system has a function with a large-scale body multiplex communications. First of all, inspect the communication function depending on the "how to proceed with troubleshooting", and check there is no abnormality in the communication system. Then finally proceed with the troubleshooting.
INSPECTION PROCEDURE
CIRCUIT DESCRIPTION
When the ignition switch is ON, the master switch (door ECU) sends a remote switch signal for the other seats multiply to the body ECU then the body ECU drive's the power window motor for the other seats.
NOTE: Power window system has a function with a large-scale body multiplex communications. First of all, inspect the communication function depending on the "how to proceed with troubleshooting", and check there is no abnormality in the communication system. Then finally proceed with the troubleshooting.
Wiring Diagram:
Step 1 - 2:
Step 2(Continued) - 4:
INSPECTION PROCEDURE
RENDER: 1.0x
NO RELATED
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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.