Celica (VIN "R")

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For testing of throttle position sensor, see Fig 1-Fig 4. 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 (Celica VIN R)

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Fig 2: Testing Throttle Position Sensor - Wiring Diagram (Celica VIN R)

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Fig 3: Testing Throttle Position Sensor - Steps 1-2 (Celica VIN R)

Fig 4: Testing Throttle Position Sensor - Step 3 (Celica VIN R)