Diagnosis & Repair

WARNING: This page is about a different car, the 2003 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.

For wiring diagram, see Fig 1. For wire color identification, see WIRE COLOR IDENTIFICATION table. For diagnosis and repair, see Fig 2-Fig 4 .

Fig 1: ECM Power Source Circuit Wiring Diagram

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Fig 2: Diagnosis & Repair Of ECM Power Source Circuit (Step 1-3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Diagnosis & Repair Of ECM Power Source Circuit Step 4-6)

Fig 4: Diagnosis & Repair Of ECM Power Source Circuit (Step 7-9)