Troubleshooting

DETECTING CONDITION AND TROUBLE AREA
If the ECM detects the DTC P0115, it operates the fail safe function in which the engine coolant temp. is assumed to be 80°C (176°F).





HINT: After confirming DTC P0115 use the OBD II scan tool or LEXUS hand-held tester to confirm the engine coolant temp. from CURRENT DATA.





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.