Probable Causes:
- A/C Switch or Switch Circuit
- Accelerator Pedal or Cable
- Neutral/Start Switch or Switch Circuit
- Throttle Position Sensor IDL Circuit
- ECM
To check throttle position sensor signal, see Code 41.
To check A/C switch signal, use the following procedure.
CODE 51/TEST 11-SWITCH SIGNAL TROUBLE
| Terminal | Trouble | Condition | STD Voltage |
|---|---|---|---|
| A/C-E1 | No Voltage | Air Conditioning ON | 8-14V |