Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




If the control module receives a signal from the engine temperature sensor corresponding to a temperature lower than -47°C (-52.6°F) or higher than +143°C (289.4°F) the control module interprets it as a fault and ECM-2000 is stored. As soon as the engine is started the temperature is calculated theoretically. If the calculated temperature exceeds the engine coolant temperature (ECT) sensor signal, the control module interprets as a fault and ECM-2000 is stored.

Substitute value
- a calculated engine temperature is used, intake air temperature is used as base value
- engine cooling fan (FC) runs at low-speed

Possible source

Signal too high:
- short-circuit to ground in the signal cable
- defective temperature sensor

Signal too low:
- open-circuit in the signal cable
- short-circuit to supply voltage in the signal cable
- defective temperature sensor
- contact resistance in terminals

Faulty signal:
- defective temperature sensor
- faulty engine coolant thermostat

Fault symptom[s]
- Malfunction indicator lamp (MIL) lit