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| Illustration 1 | g01250753 |
Winch Spool Out Solenoid connections | |
This diagnostic code is associated with the winch spool out solenoid. The FMI 06 means that the ECM has determined that the current for the circuit is above normal. The ECM controls the solenoid energize circuit through the winch spool out relay. The ECM controls the return circuit of the solenoid through the winch solenoid return relay. The ECM activates this diagnostic code when the relays have been energized and the current in the solenoid circuit is above normal.
The possible causes of this diagnostic code are listed below:
- The energize circuit of the solenoid is shorted to ground.
- The solenoid has failed.
- The ECM has failed. This is unlikely.
Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear these diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code CID 1885 FMI 06 is active before performing this procedure.
Test Step 1. CHECK THE SOLENOID
- Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.
- Observe the status of the diagnostic code.
- Disconnect the winch spool out solenoid from the machine harness.
Expected Result:
The CID 1885 FMI 06 diagnostic code changes to CID 1885 FMI 05 diagnostic code when the solenoid is disconnected.
Results:
- YES - The CID 1885 FMI 06 diagnostic code changes to a CID 1885 FMI 05 diagnostic code when the solenoid is disconnected. The circuit is correct.
Repair: The solenoid has failed. Replace the solenoid. Verify that the new solenoid corrects the problem.
STOP
- NO - The CID 1885 FMI 06 diagnostic code remains active. Proceed to Test Step 2.
Test Step 2. CHECK THE ENERGIZE CIRCUIT OF THE SOLENOID FOR A SHORT TO GROUND
- Turn the key start switch and the disconnect switch to the OFF position.
- The solenoid remains disconnected from the machine harness.
- Disconnect the machine harness connectors from the ECM.
- At the machine harness connector, measure the resistance from the solenoid contact J1-13 (wire F868-PK) to all contacts that are used in the machine harness connectors for the ECM.
Expected Result:
Each resistance measurement is greater than 5000 ohms.
Results:
- OK - Each resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed to Test Step 3.
- NOT OK - Each resistance measurement is not greater than 5000 ohms. There is a short in the machine harness. The short is between contact J1-13 (wire F868-PK) and the circuit with the low resistance measurement.
Repair: The solenoid energize circuit is shorted to a ground source. Refer to the complete machine Electrical System Schematic. Examine all connections in the switch circuit for a short to ground. Check the machine harness for locations where contact with the machine frame can occur. Repair the machine harness or replace the machine harness.
STOP
Test Step 3. CHECK THE STATUS OF THE DIAGNOSTIC CODE
- Inspect the harness connectors and clean the contacts of the harness connectors and check the wires for damage to the insulation that is caused by excessive heat, battery acid, or chafing.
- Perform a 45 N (10 lb) pull test on each of the wires that are associated with the circuit.
- Reconnect all harness connectors making sure that the connectors are fully seated and the clips for each connector are completely fastened.
- Turn the disconnect switch and the key start switch to the ON position.
- Operate the machine.
- Check the status of the CID 1885 FMI 06 diagnostic code.
Expected Result:
The CID 1885 FMI 06 diagnostic code is active.
Results:
- YES - The CID 1885 FMI 06 diagnostic code is active. The diagnostic code has not been corrected.
Repair: Check the circuit again. Use the Caterpillar Electronic Technician (ET) service tool, if available, in order to perform a "Wiggle Test" on the machine wiring harness. The wiggle test can detect momentary or intermittent shorts or opens in the machine wiring harness.If a problem is not found in the machine harness, replace the winch spool out solenoid.If the diagnostic code is still active after the solenoid replacement, the ECM may be faulty.Prior to replacing an ECM, always contact your dealership's Technical Communicator for possible consultation with Caterpillar. This consultation may greatly reduce repair time. If the cause of the diagnostic code is not found, replace the ECM. See Troubleshooting, "Electronic Control Module (ECM) - Replace".
STOP
- NO - The CID 1885 FMI 06 diagnostic code is not active. The diagnostic code does not exist at this time.
Repair: The initial diagnostic code was probably caused by a poor electrical connection at one of the harness connectors that was disconnected and reconnected. Resume normal machine operation.
STOP