This diagnostic code is associated with the position sensor for the auxiliary control. The FMI 01 means that the ECM determined that the signal is below normal operating range.
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| Illustration 1 | g00755943 |
Schematic for the circuit (auxiliary control) | |
Test Step 1. CHECK THE DUTY CYCLE OF THE AUXILIARY CONTROL
- Turn the key start switch to the OFF position.
- Remove the operator control panel on the right side in order to get to the ECM.
- Remove the wire harness from the ECM.
- Turn the key start switch to the ON position.
- Measure the duty cycle of the auxiliary control from contact 3 to contact 62.
Expected Result:
The duty cycle should be 50% ± 2%.
Results:
- OK - The duty cycle is 50% ± 2%. Proceed to Test Step 2.
- NOT OK - The duty cycle is not 50% ± 2%.
Repair: The auxiliary control has failed. Replace the control handle.
Stop.
Test Step 2. ACTUATE THE AUXILIARY CONTROL AND CHECK THE DUTY CYCLE
- Actuate the auxiliary control to the right and measure the duty cycle of the auxiliary control from contact 3 to contact 62.
- Actuate the auxiliary control to the left and measure the duty cycle of the auxiliary control from contact 3 to contact 62.
Expected Result:
The duty cycle should vary from approximately 10% to 90%.
Results:
- OK - The duty cycle is approximately 10% to 90%.
Repair: The ECM is very unlikely to have failed. Reconnect all connections and visually inspect the wire harness. 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 duty cycle is less than 5%.
Repair: The auxiliary control has failed. Replace the control handle.
Stop.