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Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control Module (ECM) Diagnostic Trouble Codes - 6 Of 11 >> ECM-3512 Misfire, Emission. Faulty Signal. Permanent Fault (B6284T; B6304S3; 1999) >> Faulty signal. Permanent fault >> Checking fuel injection system, ignition system and components >> Notes

Checking fuel injection system, ignition system and components: Notes

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.

Diagnostic Trouble Code (DTC) Misfiring cylinder
ECM-3512 1
ECM-3522 2
ECM-3532 3
ECM-3542 4
ECM-3552 5
ECM-3562 6

Check that engine oil level is correct.

Check the spark plugs, search for damage in the insulation and other damage.

Check ignition spark.

Check the function of the crankcase ventilation.

Checking fuel and residual pressure. Checking fuel and residual pressures

Check for air leakage according to Check for air leaks in the intake system .

Check that the engine seals tight. Compression test

Check flywheel for damage.

Other information: 

Fig 1: Identifying Ignition Coil
GLL103036Courtesy of VOLVO CARS OF NORTH AMERICA.