DTC ECM-4024

Condition







Diagnostic trouble code (DTC) ECM-4024 is stored if the control module registers that the signal from the leak diagnostic unit pump is too high, too low or missing.

Substitute value
- The leak diagnostic is shut off.

Possible source

Signal too high:
- Short-circuit to supply voltage in the signal cable
- Defective pump.

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
- Defective pump.

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