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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P1128: Throttle Control Motor Lock Malfunction >> Diagnosis & Repair

Diagnosis & Repair

WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect throttle control motor 2-pin connector. Measure resistance of motor between connector terminals at throttle control motor connector. Resistance should be .3-100.0 ohms at 68°F (20°C). If resistance is not as specified, replace throttle control motor. If resistance is as specified, remove intake air duct. Visually inspect throttle valve for foreign material. If throttle valve is clean, replace throttle body.

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