Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-4010

Condition




The diagnostic trouble code (DTC) is stored if the control module registers that the signal from the leak diagnostic unit valve is too high when the valve is activated, or too low, or missing when the valve is deactivated.
The diagnostic trouble code (DTC) can be diagnosed when the engine has been switched off for 8 hours and is then run for 20 minutes.

Substitute value
Leak diagnosis is blocked.

Possible source

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

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