DD15 SPN 100/FMI 4 Troubleshooting

SPN 100/FMI 4

This diagnosis is typically an Engine Oil Pressure Sensor circuit failed low. ‪

Check as follows:‪

1. Turn the ignition ON (key On, engine OFF).
2. Check for multiple codes:
   1. If 100/4, 94/4, 4407/4, 3609/4 and 3610/4 are present, repair the short to ground between pin 82 of the 120–pin MCM and the Engine Oil, Doser Fuel Line, Doser Fuel Compensation, DPF Inlet and DPF Outlet Pressure sensors. Refer to “25.3.1 Verify Repairs” .
   2. If 100/4, 94/4 and 4407/4 are present, repair the open between pin 82 of the 120–pin MCM connector and the Engine Oil, Doser Fuel Line and Doser Fuel Compensation Sensors. Refer to “25.3.1 Verify Repairs” .
   3. If only 100/4 is present, go to the next step.
3. Disconnect the Engine Oil Pressure Sensor.
4. Measure the voltage between pins 1 and 3 of the EOP Sensor harness connector.
   1. If the voltage is less than 4.5 volts, repair the open between pin 82 of the 120–pin MCM connector and pin 3 of the EOP Sensor harness connector. Refer to “25.3.1 Verify Repairs” .
   2. If the voltage is greater than 4.5 volts, go to the next step.
5. Turn the ignition OFF.
6. Measure the resistance between pin 2 of the EOP Sensor harness connector and pin 54 of the 120–pin MCM connector.
   1. If the resistance is less than 5 Ω, repair the open between pin 2 of the EOP Sensor harness connector and pin 54 of the 120–pin MCM connector. Refer to “25.3.1 Verify Repairs” .
   2. If the resistance is greater than 5 Ω, repair the short to ground between pin 2 of the EOP Sensor harness connector and pin 54 of the 120–pin MCM connector. Refer to “25.3.1 Verify Repairs” .