Diagnostic Trouble Code (DTC) Information ECM-6000

Condition

Fig 1: Identifying A/C Relay

Courtesy of VOLVO CARS OF NORTH AMERICA.

This diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers a short-circuit to ground or supply voltage or an open-circuit in the control signal cable for the air conditioning (A/C) relay.

Substitute Value

None.

Possible Source

Signal too high

Short-circuit to supply voltage in the signal cable
Damaged A/C relay.

Signal too low

Short-circuit to ground in the signal cable
Open-circuit in the signal cable
Damaged A/C relay.

Fault symptom[s]

The air conditioning (A/C) compressor does not start, or runs sporadically
The air conditioning (A/C) runs constantly.