Checking the status

Fig 1: Identifying Ignition On Position

GLL101051

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition on, wait at least 15 seconds to carry out the diagnostic.
Read off the diagnostic trouble code (DTC) status.

Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed".

The fault is permanent if the fault status is "Fault found". The fault is intermittent if the fault status is "No fault detected".

Fig 2: Identifying VCT2000
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Engine Control Module
Courtesy of VOLVO CARS OF NORTH AMERICA.

Continue
Refer to Replacing the engine control module (ECM)