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Cranking Hold Function Circuit: 4Runner

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2003 Toyota Tundra, 2003 Toyota Tacoma, 2003 Toyota Sienna, 2003 Toyota Sequoia, and 2003 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Cranking Hold Function Circuit maybe referred to as starter signal circuit.

For cranking hold function circuit inspection and wiring diagram, see Fig 1-Fig 12 . For circuit identification, see ENGINE PERFORMANCE in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. To check for intermittent problems, see INTERMITTENTS in TROUBLE SHOOTING - NO CODES article. Before replacing ECM, check ECM connectors and ground circuits. See ENGINE CONTROL MODULE POWER & GROUND CIRCUITS under COMPUTERIZED ENGINE CONTROLS.

Fig 1: Cranking Hold Function Circuit Description & Diagram (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Cranking Hold Function Wiring Diagram (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Cranking Hold Function Circuit Inspection Using Hand-Held Tester - Steps 1-2 (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Cranking Hold Function Circuit Inspection Using Hand-Held Tester - Steps 3-4 (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 5: Cranking Hold Function Circuit Inspection Using Hand-Held Tester - Steps 5-6 (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 6: Cranking Hold Function Circuit Inspection Using Hand-Held Tester - Steps 7-10 (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 7: Cranking Hold Function Circuit Inspection Using Hand-Held Tester - Step 10 Cont. (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 8: Cranking Hold Function Circuit Inspection Using OBD II Scan Tool - Steps 1-2 (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 9: Cranking Hold Function Circuit Inspection Using OBD II Scan Tool - Steps 3-4 (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 10: Cranking Hold Function Circuit Inspection Using OBD II Scan Tool - Steps 5-7 (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 11: Cranking Hold Function Circuit Inspection Using OBD II Scan Tool - Steps 8-9 (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 12: Locating Data Link Connector No. 3 (4Runner)

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Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002