P0122

DTC P0122
Plausibility check - throttle angle Drive cycle B:Signal out of range - below minimum.

Possible causes by suggested order of priority:
- Connectors C175, ECM C636 (B).
- Open circuit - C636/24 (YLG) to C175/3 (YLG).
- Open circuit - C636/25 (RB) to C175/2 (RB).
- 5V MAFS supply voltage C175/1 (R) to C175/2 (RB).
- Throttle position sensor fault.

Connectors C175, ECM C636 (B).
- Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

Open circuit - C636/24 (YLG) to C175/3 (YLG).
- Check resistance > 1M Ohm

Open circuit - C636/25 (RB) to C175/2 (RB).
- Check resistance > 1M Ohm

5V MAFS supply voltage C175/1 (R) to C175/2 (RB).
- 5V MAFS supply voltage C175/1 (R) to C175/2 (RB)..
Between 4.5V and 5.5V.
- If the voltage is too high a short circuit to battery or faulty ECM should be suspected.
- If the voltage is too low an open circuit or connector problem should be suspected.

Throttle position sensor fault.
- Throttle position sensor resistance, pins /1 to /3
5K Ohms.
- Throttle position sensor resistance, pins /3 to /2
- Reading should vary from below 100 ohms when the throttle is closed to 5K Ohms as the sensor is moved to fully open.
- The reading should vary smoothly with no jumps in the reading as the throttle is moved.