HOSE AS 3904483 - Caterpillar

0794 FMI 07 service code can only be recorded if the optional secondary steering system is installed. The secondary steering system must be energized in the power train electronic control module (ECM) software via the Caterpillar Electronic Technician (ET) configuration screen. The power train ECM does this function with the pressure sensor switch inputs, a test switch, and a relay driver. CID 0794 FMI 07 service code is recorded if the power train ECM is commanding the secondary steering relay ON or the test switch ON, and there is not any pressure indicated by the secondary steering pressure switch. This is not an electronic fault. This is just an indication that the secondary steering system is not responding as intended.
Check the status of the fault.
If the CID 0794 FMI 07 service code is active, then it cannot be inactivated until the secondary steering system is activated and the secondary steering pressure switch indicates that there is pressure in the system.
After the engine is running, press and hold the secondary steering test switch for five to ten seconds in order to see if the CID 0794 FMI 07 service code changes to inactive.Expected Result: The CID 0794 FMI 07 service code does not change to inactive while the secondary steering test switch is depressed.Result:
OK - CID 0794 FMI 07 service code stays active. Proceed to Step 2.
NOT OK - CID 0794 FMI 07 service code does change to inactive while the test switch is depressed. STOP.
Check for other recorded service codes.
Other recorded service codes may indicate the reason for the improper operation of the secondary steering system.Expected Result: There are NOT any other recorded diagnostic service codes.Results:
OK - There are NOT any other recorded diagnostic service codes. Proceed to Step 3.
NOT OK - There are other recorded diagnostic service codes. Exit the CID 0794 FMI 07 procedure. Perform and correct the other recorded diagnostic service codes. Return to the CID 0794 FMI 07 procedure after the other recorded diagnostic service codes are corrected. STOP.
Check the battery voltage.
Check the battery voltage. The secondary steering motor requires a large amount of current. A weak battery may effect the operation of the motor.Expected Result: The battery voltage is correct.Results:
OK - The battery voltage is correct. Proceed to Step 4.
NOT OK - The battery voltage