This diagnostic code is associated with the switch for the two speed. The FMI 04 means that the ECM determined that the voltage is below normal. The circuit has been shorted to ground for more than 30 seconds.
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| Illustration 1 | g01035773 |
Schematic of the switch circuit for the two speed | |
Test Step 1. CHECK THE CONTINUITY OF THE SWITCHES
- Locate the switch connector harness for the two speed circuit beneath the left hand joystick through the access panel.
- Unplug the switch connector harness.
- Measure the resistance from contact 7 to contact 10 of the switch side of the connector.
Expected Result:
The resistances should be greater than 5000 Ohms.
Results:
- OK - The resistances are greater than 5000 Ohms. Proceed to Test Step 2.
- NOT OK - The resistance was less than 5000 Ohms on one of the readings.
Repair: The switch has failed. Replace the joystick.
Stop.
Test Step 2. CHECK FOR A SHORT CIRCUIT
- Remove the floorplate in order to get to the ECM.
- Remove the wire harness from the ECM.
- Measure the resistance from contact 3 to contact 29 of the wire harness connector.
Expected Result:
The resistances should be greater than 5000 Ohms.
Results:
- OK - The resistances are greater than 5000 Ohms.
Repair: The ECM is very unlikely to have failed. Reconnect all connections and visually inspect the wire harness. Verify that the values that are present on the machine configuration screen match the machine's options. Verify that the values that are present on the machine configuration screen are installed correctly. Verify that the diagnostic code still exists. If the diagnostic code still exists perform the test steps again.Replace the ECM, if the cause of the diagnostic code was not found after the second attempt. See Testing and Adjusting, "Electronic Control Module (ECM) - Replace".
Stop.
- NOT OK - The resistance was less than 5000 Ohms on one of the readings.
Repair: The circuit is shorted to ground in the wire harness. Locate the short. Repair the wire harness or replace the wire harness.
Stop.