HOSE 3718955 - Caterpillar

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Hoist Control Valve
(1) Solenoid Valve (Hoist Enable).
The location for the Solenoid Valve (Hoist Enable) is under the chassis between the transmission and the torque converter.
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Schematic Of The Solenoid Valve (Hoist Enable)
Note: The approximate coil resistance of the solenoid is 41 ohms at 25 °C (77.0 °F).This diagnostic code is associated with the Solenoid Valve (Hoist Enable). The FMI 05 means that the ECM has determined that the current of the solenoid is below normal.The possible causes of this diagnostic code are listed below:
The energize circuit of the solenoid is open.
The return circuit of the solenoid is open.
The solenoid has failed.
The ECM has failed. This situation 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 of CID 1243 FMI 05 is active before performing this procedure.Note: Use a calibrated 146-4080 Digital Multimeter for the measurements in this procedure.System Response:The ECM will turn off the solenoid for the hoist pilot system enable. This will cause the hoist system to be forced to the HOLD mode.After the diagnostic goes away, the ECM will continue to command the system to be in the HOLD mode until the hoist lever is moved into the HOLD mode.Test Step 1. CHECK THE SOLENOID.
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.
Disconnect the solenoid with the active diagnostic code from the machine harness.
At the machine harness connector for the solenoid, place a jumper wire from contact 1 (wire J826-PK(Pink)) to contact 2 (wire H862-GY(Grey)).
Observe the status of the CID 1243 FMI 05.Expected Result:The CID 1243 FMI 05 remains active. The FMI has not changed and the "05" is still active.Results:
YES - The diagnostic code remains active. The jumper wire does not affect the diagnostic code. Proceed to Test Step 2.
NO - The diagnostic is no longer active. The solenoid has failed.Repair: The solenoid has failed. Repeat this Test Step "CHECK THE SOLENOID" in order to verify the solenoid failure. Replace the solenoid. Verify that the new solenoid corrects the problem.STOPTest Step 2. CHECK THE HARNESS FOR AN OPEN.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness connectors from the ECM.
The jumper wire that was installed in the previous Test Step remains in place.
At the machine harness connector, measure the resistance from signal contact J1-66 (wire J826-PK(Pink)) to contact J1-60 (wire H862-GY(Grey)).Expected Result:The resistance is less than 5.0 ohms.Results:
OK - The resistance is less than 5.0 ohms. The machine harness is correct. Proceed to Test Step 3.
NOT OK - The resistance is greater than 5000 ohms. The resistance measurement is not correct. There is an open circuit in the machine harness.Repair: The open is in wire J826-PK(Pink)or in wire H862-GY(Grey)of the machine harness. Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK IF THE DIAGNOSTIC CODE REMAINS.
Inspect the contacts of