Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-630C

Condition




The engine control module (ECM) checks the signal cable for controlling the air conditioning (A/C) relay.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal from the signal cable for the air conditioning (A/C) relay is too high.
The diagnostic trouble code (DTC) can be diagnosed at ignition on and with the engine running.

Substitute value
- None.

Possible source
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the power supply
- Damaged air conditioning (A/C) relay.

Fault symptom[s]
- The air conditioning (A/C) system does not operate.