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Volvo All Engines (2004 Emissions) Fault Code: SID 39 FMI 4 Starter Output

Fault Condition: FMI 4 indicates there is a short circuit to ground in the starter relay control circuit.

Possible repairs:

Turn the ignition key OFF first.

1) Disconnect the Vehicle Electronic Control Unit (VECU) connector B. Check for continuity between the Vehicle Electronic Control Unit (VECU) connector B pin 28 and a good ground. If continuity exists to ground, locate and
repair the short circuit to ground. If there is NO continuity, verify the diagnostic code, the FMI and retest the system. If the FMI 4 is still active, replace the VECU and retest the system.

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