DTC P0120: Throttle Position Sensor Circuit: Notes

CAUTION: If ECM replacement is instructed in following testing, always ensure ECM connectors and ground circuits are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction. If ECM is replaced, ECM must be programmed with proper ignition key code for engine immobilizer system. For programming procedures, see appropriate ENGINE IMMOBILIZER SYSTEMS article in ACCESSORIES & EQUIPMENT.

NOTE: If DTCs P0110, P0115, P0120, P0450 and P1120 are output together, check circuit E2 (Brown/White wire) between terminal No. 18 at ECM harness connector E6 and splice E10. Repair as necessary. See WIRING DIAGRAMS article.