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 MANUALSTOYOTA20034 RUNNER 2WD V6-4.0L (1GR-FE)REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - WINDOWS AND GLASSPOWER WINDOW CONTROL MODULETESTING AND INSPECTION
2003 Toyota 4 Runner 2WD V6-4.0L (1GR-FE)
Power Window Control Module: Testing and Inspection
2003 Toyota 4 Runner 2WD V6-4.0L (1GR-FE)SECTION Testing and Inspection
Back Door Power Window
TERMINALS OF ECU
1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (BODY ECU)
Check the voltage or continuity between the terminals of the connectors.
If the result is not as specified, the instrument panel J/B assembly (body ECU) malfunctions.
2. CHECK MULTIPLEX NETWORK DOOR ECU BACK (BACK DOOR ECU)
Check the voltage or continuity between the terminals of the connectors.
If the result is not as specified, the multiplex network door ECU back (back door ECU) malfunctions.
TERMINALS OF ECU
Terminals Of ECU/Pinouts:
1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (BODY ECU)
Check the voltage or continuity between the terminals of the connectors.
Standard / Back Door Power Window:
If the result is not as specified, the instrument panel J/B assembly (body ECU) malfunctions.
2. CHECK MULTIPLEX NETWORK DOOR ECU BACK (BACK DOOR ECU)
Terminals Of ECU/Pinouts:
Check the voltage or continuity between the terminals of the connectors.
Standard / Back Door Power Window:
If the result is not as specified, the multiplex network door ECU back (back door ECU) malfunctions.
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.