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| Illustration 1 | g02025857 |
Schematic of the Hydraulic Oil Temperature Sender | |
This diagnostic code is recorded when the signal voltage of the hydraulic oil temperature sender and the voltage is too low. The Machine ECM records this diagnostic code from information received from the Monitoring System through the Cat Data Link.
The possible causes of this diagnostic code are listed below:
- The sender has failed.
- The signal circuit in the machine harness is shorted to ground.
- The ECM may have failed.
The CID 0600 FMI 04 diagnostic code will be logged in the internal memory of the Machine ECM.
Test Step 1. CHECK THE SENDER
- Disconnect the machine harness from the sender.
Expected Result:
The CID 0600 FMI 04 diagnostic code is no longer present.
Results:
- OK - The CID 0600 FMI 04 diagnostic code is no longer present. The sender has failed.
Repair: Replace the sender.
STOP
- NOT OK - The diagnostic code remains. The failure remains present. The sender is not the cause of the failure. Proceed to Test Step 2.
Test Step 2. CHECK THE HARNESS.
- The sender remains disconnected from the machine harness.
- Turn the disconnect switch and the key start switch to the OFF position.
- At the machine harness connector for the sender, measure the resistance between the signal contact (wire 491-PK) and frame ground.
Expected Result:
The resistance is greater than 5000 ohms.
Results:
- OK - The resistance is greater than 5000 ohms. The harness circuit resistance is correct. The Machine ECM may have failed.
Repair: Exit this procedure, and perform this procedure again. If the failure is not found, replace the machine ECM. See Testing and Adjusting, "Electronic Control Module (ECM) - Replace".
STOP
- NOT OK - The resistance is less than 5000 ohms. The machine harness has failed. There is a short between frame ground and the signal circuit in the machine harness.
Repair: Repair the machine harness or replace the machine harness.
STOP