Circuit Description
Built into Throttle Position (TP) sensor, the closed throttle position switch turns off whenever the throttle position is NOT fully closed. Code is set when ECM never receives a ON signal from switch. Possible causes are:
- Closed Throttle Position (CTP) switch open circuit.
- CTP switch.
- ECM.
NOTE:
If trouble Codes P0110, P0115 and P0120 are output simultaneously, ground (E2) circuit may be open.