IDLER GP-FRONT 2346204 - Caterpillar

Illustration 1 g03425561
Illustration of the electrical connections for the "Hydraulic Lock" solenoid.This diagnostic code is associated with the "Hydraulic Lock " solenoid. The FMI 05 diagnostic code means that the ECM has determined that an open in the circuit exists. 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. A failure of the Machine ECM 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 1160 FMI 05 is active before performing this procedure.Note: Use a digital multimeter for the measurements in this procedure.Test Step 1. CHECK THE SOLENOID.
Turn the disconnect switch and the key start switch to the OFF position.
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 A588-GN) to contact 2 (wire 200-BK).
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine
Observe the status of the CID 1160 FMI 05 diagnostic code.Expected Result:The CID 1160 FMI 05 diagnostic code remains active when the key start switch is turned ON. Results:
YES. - The jumper wire does not affect the status of the active CID 1160 FMI 05 diagnostic code when the key start switch is turned ON. The solenoid is not the cause of the problem. Proceed to Test Step 2.
NO - The CID 1160FMI 05 diagnostic code is no longer active. A CID 1160 FMI 06 diagnostic code becomes active when the key start switch is turned to the ON position.Repair: The solenoid has failed. Replace the solenoid. Verify that the new solenoid corrects the problem.STOPTest Step 2. CHECK THE HARNESS FOR AN OPEN.
The relay remains disconnected from the machine harness. The jumper wire remains connected between contact 1 and contact 2
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness connectors J1 and J2 from the Machine ECM.
At the machine harness connector, measure the resistance from signal contact J2-27 (wire A588-GN) to ground contact (wire 200-BK).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: Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK IF THE DIAGNOSTIC CODE REMAINS.
Inspect the harness connectors. Clean the contacts of the harness connectors. 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 and make sure that the connectors