4Runner 4.7L

For fuel pump control circuit description and inspection, see Fig 2 and Fig 3-Fig 12 . For fuel pump control circuit wiring diagram, see Fig 14. To check ECM power source circuit, see ENGINE CONTROL MODULE POWER SOURCE CIRCUIT . For circuit identification, see ENGINE PERFORMANCE in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Before replacing ECM, check ECM connectors and ground circuits. See ENGINE CONTROL MODULE POWER & GROUND CIRCUITS under COMPUTERIZED ENGINE CONTROLS.

Fig 1: Fuel Pump Control Circuit Description & Diagram (4Runner 4.0L)

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Fig 2: Fuel Pump Control Circuit Description & Diagram (4Runner 4.7L)

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Fig 3: Fuel Pump Control Circuit Inspection Using Hand-Held Tester - Steps 1-3 (4Runner)

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Fig 4: Fuel Pump Control Circuit Inspection Using Hand-Held Tester - Steps 4-6 (4Runner)

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Fig 5: Fuel Pump Control Circuit Inspection Using Hand-Held Tester - Steps 7-8 (4Runner)

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Fig 6: Fuel Pump Control Circuit Inspection Using Hand-Held Tester - Steps 9-10 (4Runner)

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Fig 7: Fuel Pump Control Circuit Inspection Using Hand-Held Tester - Steps 11-12 (4Runner)

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Fig 8: Fuel Pump Control Circuit Inspection Using OBD II Scan Tool - Steps 1-3 (4Runner)

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Fig 9: Fuel Pump Control Circuit Inspection Using OBD II Scan Tool - Steps 4-6 (4Runner)

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Fig 10: Fuel Pump Control Circuit Inspection Using OBD II Scan Tool - Steps 7-8 (4Runner)

Fig 11: Fuel Pump Control Circuit Inspection Using OBD II Scan Tool - Steps 9-10 (4Runner)

Fig 12: Fuel Pump Control Circuit Inspection Using OBD II Scan Tool - Steps 11-12 (4Runner)

Fig 13: Fuel Pump Control Wiring Diagram (4Runner 4.0L)

Fig 14: Fuel Pump Control Wiring Diagram (4Runner 4.7L)