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Diagnosis & Repair

WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: PNP switch connector P1 is located right rear engine room, above R/H cylinder head cover.

For diagnosis and repair with Toyota Hand-held tester or an Enhanced OBD II scan tool, see Fig 2-Fig 5 . For diagnosis and repair with generic OBD II scan tool (not Enhanced), see Fig 6-Fig 9 .

For starter relay circuit wiring diagram, see Figure & Fig 1 . For ECM location, see Figure. For ECM connector view, see Figure.

Fig 1: Cranking Holding Function Circuit Diagram

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Cranking Holding Function Circuit Diagnosis Using Hand-Held Tester (Steps 1-2)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Cranking Holding Function Circuit Diagnosis Using Hand-Held Tester (Step 2 Cont. & Steps 3-4)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Cranking Holding Function Circuit Diagnosis Using Hand-Held Tester (Steps 5-6)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 5: Cranking Holding Function Circuit Diagnosis Using Hand-Held Tester (Steps 7-10)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 6: Cranking Holding Function Circuit Diagnosis Using OBD II Scan Tool (Steps 1-2)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 7: Cranking Holding Function Circuit Diagnosis Using OBD II Scan Tool (Steps 3-4)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 8: Cranking Holding Function Circuit Diagnosis Using OBD II Scan Tool (Steps 5-7)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 9: Cranking Holding Function Circuit Diagnosis Using OBD II Scan Tool (Steps 8-9)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002