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 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 DTCs P0110, P0115 and P0120 are output simultaneously, E2 (Sensor ground) may be open.