Checking the fuel injection system, ignition system and components

NOTE:

In the event of diagnostic trouble codes (DTCs), that affect camshaft control or camshaft reset valve, these must be fault-traced first.

The diagnostic trouble code (DTC) indicates which cylinder has misfired:

Check that the engine oil level is correct.

Check the spark plugs. Search for damage in the insulation and other damage.

Check the ignition spark.

Check the function of the crankcase ventilation.

Check the fuel pressure and residual pressure. Checking fuel and residual pressures

Check that the engine seals tight. Compression test

Check the flywheel for damage.

Other information:

for information about the misfire diagnostic:
- For -2001, see Misfire diagnostic
- For 2002-, see Misfire diagnostics .

Fig 1: Identifying Ignition Coil

Courtesy of VOLVO CARS OF NORTH AMERICA.