DTC 4-1-3 EGR Temperature Sensor Signal

4-1-3 EGR TEMPERATURE SENSOR SIGNAL

Condition(s) for DTC
^ The ICM uses the EGR temperature sensor signal to determine whether or not an EGR flow is present. The DTC will be recorded if the signal from the sensor to the ICM is too high, too low or faulty (i.e. the signal changes although the ICM has not delivered a control signal to the vacuum controller).

Substitute value
^ None.

Fault source(s)
^ Signal too high:
- Signal lead short-circuited to supply.
- Open-circuit in signal lead or ground lead.
- Faulty EGR temperature sensor.
- Stray current in connector.

^ Signal too low:
- Signal lead short-circuited to ground.
- Faulty sensor.

^ Faulty signal:
- Contact resistance and oxidation in connector.

Fault symptom(s)
^ None.