Troubleshooting

DETECTING CONDITION AND TROUBLE AREA

HINT:
- If there is open circuit in IDL line, DTC P0120 does not indicate.





- After confirming DTC P0120 use the OBD II scan tool or LEXUS hand-held tester to confirm the throttle valve opening percentage and closed throttle position switch condition.





WIRING DIAGRAM

















INSPECTION PROCEDURE

HINT: If DTC P0110 (Intake Air Temp. Circuit Malfunction), P0115 (Engine Coolant Temp. Circuit Malfunction), P0120 (Throttle/Pedal Position Sensor/Switch "A" Circuit Malfunction) are output simultaneously, E2 (Sensor Ground) may be open.