Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-4024

Condition




The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the signal from the leak diagnostic pump unit is too high, too low or missing.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute value
The leak diagnostic is disabled.

Possible source

Signal too high
- Short-circuit to supply voltage in the signal cable
- Damaged pump in the leak diagnostic unit.

Signal too low
- Short-circuit to ground in the signal cable.

Signal missing
- Contact resistance in the terminals
- Open-circuit in the signal cable
- Open-circuit in the power cable
- Damaged pump in the leak diagnostic unit.

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