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 diagnosis and repair, see Fig 2-Fig 4 .

Fig 1: Heated Oxygen Sensor Circuit Wiring Diagram

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Fig 2: Diagnosis & Repair Of Heated Oxygen Sensor Circuit (Step 1-2)

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Fig 3: Diagnosis & Repair Of Heated Oxygen Sensor Circuit (Step 3)

Fig 4: Diagnosis & Repair Of Heated Oxygen Sensor Circuit (Step 4)