Throttle Position Sensor: Highlander

For testing of throttle position sensor, see Fig 1-Fig 5 . 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: Testing Throttle Position Sensor - Circuit Description (Highlander)

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Fig 2: Testing Throttle Position Sensor - Wiring Diagram & Step 1 (Highlander)

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Fig 3: Testing Throttle Position Sensor - Step 1 Cont. & Steps 2-4 (Highlander)

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Fig 4: Testing Throttle Position Sensor - Steps 5-6 (Highlander)

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Fig 5: Testing Throttle Position Sensor - Step 7 (Highlander)

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