Diagnostic trouble code (DTC) information

Condition

Fig 1: Identifying System Relay Control Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Diagnostic trouble code (DTC) ECM-24 is stored if there is a short-circuit to ground or supply voltage or an open-circuit in the signal cable for the system relay.

Substitute Value

None.

Possible Source

Signal too high:

Short-circuit to supply voltage in the signal cable.

Signal too low:

Short-circuit to ground in signal cable
Open-circuit in the signal cable.

Fault symptom[s]

The engine fails to start
Malfunction indicator lamp (MIL) lit.