Diagnostic Trouble Code (DTC) Information ECM-432A
Condition
The engine control module (ECM) checks the function of the valve in the leak diagnostic unit pump by measuring the current through the leak diagnostic pump.
After the leading reference phase in the leak diagnostic the air flow is directed from the reference leak to the fuel tank system and begins to pressurize it. In this change there is a short lowering of power consumption before pressure builds up in the tank system. A diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the power consumption falls too slowly or not at all and it is interpreted as damage to the valve in the pump.
The diagnostic trouble code (DTC) can be diagnosed when the leak diagnostic system is run.
Substitute Value
- Leak diagnostics interrupted.
Possible Source
- Dirt or damp in the pump
- The pump valve has jammed
- Damaged leak diagnostic pump.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.