DTC 4-1-1 Throttle Position Potentiometer

4-1-1 THROTTLE POSITION POTENTIOMETER SIGNAL

Condition(s) for DTC
^ If the Throttle Position (TP) Potentiometer signal remains steady below 0.25 Volts or exceeds 4.75 Volts, the MFI module will interpret the condition as a fault and the DTC will be recorded.

Substitute value
^ The system will assume a substitute value equivalent to a throttle opening of approx. 15°.

Fault source(s)
^ Signal too high:
- Open-circuit in signal or ground lead.
- Ground lead short-circuited to supply.
- Contact resistance in connections.
- Faulty TP potentiometer.

^ Signal too low:
- Signal lead short-circuited to ground.
- Open-circuit in supply lead.
- Contact resistance in connections.
- Faulty sensor.

Fault symptom(s)
^ Incorrect idling speed.
^ Impaired full-load acceleration when A/C is not switched out.