Tundra 4.7L

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.

For throttle position sensor circuit inspection and wiring diagram, see Fig 1-Fig 7 . 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. To replace throttle body, see THROTTLE CONTROL MOTOR under MOTORS in REMOVAL & INSTALLATION - V6 & V8.

Fig 1: Testing Throttle Position Sensor - Circuit Description (Tundra 4.7L)

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Fig 2: Testing Throttle Position Sensor - Wiring Diagram (Tundra 4.7L)

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Fig 3: Testing Throttle Position Sensor Using Hand-Held Tester - Steps 1-2 (Tundra 4.7L)

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Fig 4: Testing Throttle Position Sensor Using Hand-Held Tester - Steps 3-4 (Tundra 4.7L)

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Fig 5: Testing Throttle Position Sensor Using Hand-Held Tester - Step 5; Using OBD II Scan Tool - Step 1 (Tundra 4.7L)

Fig 6: Testing Throttle Position Sensor Using OBD II Scan Tool - Steps 2-3 (Tundra 4.7L)

Fig 7: Testing Throttle Position Sensor Using OBD II Scan Tool - Step 4 (Tundra 4.7L)