Checking components and wiring: Notes

Check the cable that relates to the diagnostic trouble code (DTC). Check for an open-circuit.

Check between:

• Engine control module (ECM) #A50 (#A50) and ignition coil pin #2 (ECM-350B: ignition coil A, cylinder 1).
• Engine control module (ECM) #A31 (#A31) and ignition coil pin #2 (ECM-351B: ignition coil B, cylinder 2).
• Engine control module (ECM) #A51 (#A51) and ignition coil pin #2 (ECM-352B: ignition coil E, cylinder 3).
• Engine control module (ECM) #A30 (#A30) and ignition coil pin #2 (ECM-353B: ignition coil C, cylinder 4).
• Engine control module (ECM) #A52 (#A52) and ignition coil pin #2 (ECM-354B: ignition coil D, cylinder 5).

Remedy as necessary.

Other information 

• See Connecting the breakout box
• See Signal specification
• See Replacing ignition coils
• See Contents

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ignition Coil

Courtesy of VOLVO CARS OF NORTH AMERICA.

Refer to Verification