This diagnostic code is associated with the switch for the quick coupler. The FMI 02 means that the ECM determined that the signal is intermittent, erratic, or incorrect. The ECM could be receiving invalid combinations from the circuit.
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| Illustration 1 | g00755695 |
Schematic for the switch circuit (quick coupler) | |
Test Step 1. CHECK THE CONTINUITY OF THE SWITCH IN THE NEUTRAL POSITION
- Turn the key start switch to the OFF position.
- Remove the switch from the dash.
- Unplug the switch from the wire harness.
- With the switch in the neutral position, check the resistance from terminal 2 to the following terminals: terminal 1, terminal 3, terminal 4 and terminal 6.
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 is less than 5000 Ohms on one of the readings.
Repair: The switch has failed. Replace the switch.
Stop.
Test Step 2. CHECK THE CONTINUITY OF THE SWITCH IN THE LOCK POSITION
- Press and hold the switch in the LOCK position.
- With the switch in the LOCK position, check the resistance from terminal 2 to terminal 1 and to terminal 4.
- With the switch in the LOCK position, check the resistance from terminal 2 to terminal 3 and to terminal 6.
Expected Result:
The resistances should be greater than 5000 Ohms on terminals 1 and 4. The resistances should be less than 5 Ohms on terminals 3 and 6.
Results:
- OK - The resistances are correct. Proceed to Test Step 3.
- NOT OK - The resistances are not greater than 5000 Ohms on either terminal 1 or terminal 4 or the resistances are not less than 5 Ohms on either terminal 3 or terminal 6.
Repair: The switch has failed. Replace the switch.
Stop.
Test Step 3. CHECK THE CONTINUITY OF THE SWITCH IN THE UNLOCK POSITION
- Press and hold the switch in the UNLOCK position.
- With the switch in the UNLOCK position, check the resistance from terminal 2 to terminal 1 and to terminal 4.
- With the switch in the UNLOCK position, check the resistance from terminal 2 to terminal 3 and to terminal 6.
Expected Result:
The resistances should be less than 5 Ohms on terminals 1 and 4. The resistances should be greater than 5000 Ohms on terminals 3 and 6.
Results:
- OK - The resistances are correct. Proceed to Test Step 4.
- NOT OK - The resistances are not less than 5 Ohms on either terminal 1 or terminal 4 or the resistances are not greater than 5000 Ohms on either terminal 3 or terminal 6.
Repair: The switch has failed. Replace the switch.
Stop.
Test Step 4. CHECK THE CONTINUITY OF THE CIRCUIT WITH THE SWITCH IN THE NEUTRAL POSITION
- Reinstall the switch.
- Remove the operator control panel on the right side in order to get to the ECM.
- Remove the wire harness from the ECM.
- With the switch in the neutral position, check the resistance from contact 3 to the following contacts: contact 9, contact 29 and contact 31.
Expected Result:
The resistances should be greater than 5000 Ohms.
Results:
- OK - The resistances are greater than 5000 Ohms. Proceed to Test Step 5.
- NOT OK - The resistance is less than 5000 Ohms on one of the readings.
Repair: The circuit is shorted in the wire harness or in a connector. Locate the problem. Repair the wire harness or the connector or replace the wire harness or the connector.
Stop.
Test Step 5. CHECK THE CONTINUITY OF THE CIRCUIT WITH THE SWITCH IN THE LOCK POSITION
- Press and hold the switch in the LOCK position.
- With the switch in the LOCK position, check the resistance from contact 3 to contact 9 and to contact 29.
- With the switch in the LOCK position, check the resistance from contact 3 to contact 31.
Expected Result:
The resistances should be less than 5 Ohms on contacts 9 and 29. The resistance should be greater than 5000 Ohms on contact 31.
Results:
- OK - The resistances are correct. Proceed to Test Step 6.
- NOT OK - The resistances are not less than 5 Ohms on either contact 9 or contact 29 or the resistance is not greater than 5000 Ohms on contact 31.
Repair: The circuit is shorted or the circuit has an open in the wire harness or in a connector. Locate the problem. Repair the wire harness or the connector or replace the wire harness or the connector.
Stop.
Test Step 6. CHECK THE CONTINUITY OF THE CIRCUIT WITH THE SWITCH IN THE UNLOCK POSITION
- Press and hold the switch in the UNLOCK position.
- With the switch in the UNLOCK position, check the resistance from contact 3 to contact 9 and to contact 31.
- With the switch in the UNLOCK position, check the resistance from contact 3 to contact 29.
Expected Result:
The resistances should be less than 5 Ohms on contacts 9 and 31. The resistance should be greater than 5000 Ohms on contact 29.
Results:
- OK - The resistances are correct.
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 resistances are not less than 5 Ohms on either contact 9 or contact 31 or the resistance is not greater than 5000 Ohms on contact 29.
Repair: The circuit is shorted or the circuit has an open in the wire harness or in a connector. Locate the problem. Repair the wire harness or the connector or replace the wire harness or the connector.
Stop.