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 MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 327 (POWER WINDOW CONTROL SYSTEM)POWER WINDOW CONTROL SYSTEMPOWER WINDOW CONTROL SYSTEM INSPECTION(2) - INSPECT ONE TOUCH POWER WINDOW SYSTEM (USING AMMETER W/CURRENT-MEASURING PROBE)
2004 Toyota Celica GT, Standard
(2) - Inspect One Touch Power Window System (Using Ammeter W/Current-Measuring Probe)
2004 Toyota Celica GT, StandardSECTION (2) - Inspect One Touch Power Window System (Using Ammeter W/Current-Measuring Probe)
WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the driver door ECU with connectors connected.
- Attach a current-measuring probe to terminal 5 of the wire harness.
- Turn the ignition switch ON and set the power window switch in the down position.
- As the window goes down, check that the current flow is approximately 7 A.
- Check that the current increases up to approximately 14.5 A or more when the window stops going down.
NOTE:
The PTC opens some 4-90 seconds after the window stops going down, so that check must be made before the PTC operates.
If operation is as specified, replace the driver door ECU.
RENDER: 1.0x
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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.