Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
Diagnostic trouble code (DTC) ECM-7D is stored if the control signal cable to the air conditioning (A/C) relay has a short-circuit to ground, short-circuit to supply voltage or an open-circuit.

Substitute value
None.

Possible source

Signal too high:
- Short-circuit to supply voltage in the signal cable.
- Faulty air conditioning (A/C) relay.

Signal too low:
- Short-circuit to ground in the signal cable.
- Open-circuit in the signal cable.
- Faulty air conditioning (A/C) relay.

Fault symptom[s]
- The air conditioning (A/C) compressor does not function.
- Air conditioning (A/C) compressor operates constantly.