Possible Causes
- Throttle adaptations not performed after battery disconnect.
- TPS disconnected.
- TPS to ECM sensing circuits open or high resistance.
- Throttle motor power relay failure.
- Throttle motor power relay to ECM circuit fault.
- Throttle motor power relay power supply open circuit.
- ECM ground circuit fault (relay coil drive).
- Throttle motor to ECM drive circuits open, shorted or high resistance.
- Throttle motor failure.
- Throttle assembly failure.