DTC P0120: Throttle/Pedal Position Sensor/Switch Circuit: Notes

WARNING: Read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .

CAUTION: If Engine Control Module (ECM) replacement is instructed in following test, always ensure ECM connectors and ground circuits are okay. If either are defective, repair and repeat testing to confirm ECM malfunction. On models equipped with engine immobilizer, if ECM is replaced, ECM must be programmed with proper ignition key code for engine immobilizer system. For programming procedures, see COMPUTER RELEARN PROCEDURES - TOYOTA article in GENERAL INFORMATION, or appropriate ENGINE IMMOBILIZER SYSTEMS article in ACCESSORIES & EQUIPMENT.

NOTE: If DTCs P0110, P0115 and P0120 are output simultaneously, the E2 sensor ground circuit at terminal No. 18 (Brown wire) at ECM connector E8 may be open. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. For ECM connector terminal identification, see Figure. It may be necessary to check Brown wire between splice I7 and terminal No. 18 at ECM connector E8. Splice I7 is located behind passenger's side of instrument panel, just above glove box door. See Figure.