Checking wiring and components: Notes

Check signal cable between ignition coil #1 and control module:

#A31 (#A31) (ECM 3300)
#A30 (#A30) (ECM 3310)
#A50 (#A50) (ECM 3320)
#A52 (#A52) (ECM 3330)
#A51 (#A51) (ECM 3340)

and power supply between system relay #3 and ignition coil #4 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

HINT: Use an electrician's screwdriver with at least a 3 W bulb to determine whether the cable is short-circuited to supply voltage.

Remedy as necessary.

Other information

Connecting the breakout box/accessing the control module, see Connecting the breakout box .
To access/replace the ignition coil, see Replacing ignition coils .
For information about signals, see Signal specification .

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Voltage Display

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ignition Coil

Courtesy of VOLVO CARS OF NORTH AMERICA.