Volvo All Engines (2004 Emissions) Fault Code: SID 230 FMI 3 Idle Validation Switch

Fault Condition: A fault of FMI 3 will be logged if the IVS voltage is greater than 8.5 volts and the pedal position less than 1%. If the voltage is approximately 0 volts and the pedal position is greater than 50%, an FMI 5 will set.

Possible repairs:

Turn the ignition key OFF first.

1) If code SID 230 is not set, wiggle the harness and connectors to try to set the code. Visually inspect the VECU connectors and wires for poor connections.
2) Disconnect connector B from the Engine Management System (EMS) Module. Disconnect connector B from the Vehicle Electronic Control Unit (VECU). Turn the ignition key ON. Check for voltage at harness connector B
pin 15 of the EMS Module harness and a good ground. The measured voltage should be 0 volts. If there is voltage indicated, repair the short to power in the harness and retest the system. If there is NO voltage indicated, verify the diagnostic code, the FMI and retest the system. If the FMI 3 is still active, replace the EMS Module and retest the system.
3) Disconnect connector B from the Engine Management System (EMS) Module. Disconnect connector B from the Vehicle Electronic Control Unit (VECU). Check for continuity between harness connector B pin 15 of the EMS Module harness and harness connector B pin 17 of the Vehicle Electronic Control Unit (VECU) If there is NO continuity, repair the open in the harness and retest the system.
4) Disconnect connector B from the Engine Management System (EMS) Module. Disconnect connector B from the Vehicle Electronic Control Unit (VECU). Check for continuity between harness connector B pin 15 of the EMS Module harness and a good ground. If there is continuity, repair the short to ground in the harness and retest the system.
5) Disconnect EMS Module connector B. Visually inspect EMS Module connector B for dirt, loose pins or deformed contacts. If a repairable open is found or the terminal feels loose, repair the harness connector. If the test lead is making good contact with the connector terminal, verify the diagnostic code, the FMI and retest the system. If the FMI 5 is still active, replace the EMS Module and retest the system.