Diagnosis & Repair (With OBD II Scan Tool)

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 Figure. For wire color identification, see WIRE COLOR IDENTIFICATION table under COMPUTERIZED ENGINE CONTROLS. For diagnosis and repair, see Fig 1-Fig 5 .

Fig 1: Diagnosis & Repair Of Fuel Pump Control Circuit (Step 1-3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Diagnosis & Repair Of Fuel Pump Control Circuit (Step 4-6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Diagnosis & Repair Of Fuel Pump Control Circuit (Step 7-8)

Fig 4: Diagnosis & Repair Of Fuel Pump Control Circuit (Step 9-10)

Fig 5: Diagnosis & Repair Of Fuel Pump Control Circuit (Step 11-12)