IDLER GP-FRONT 1831860 - Caterpillar

Illustration 1 g02170793
Schematic of the Pressure Compensation Override solenoid
The CID 885 is associated with the pressure compensation override solenoid. The FMI 05 diagnostic code is recorded when the Implement ECM reads the current of the solenoid as being below normal.The possible causes are listed below:
There is an open in the circuit.
The solenoid has failed.
The ECM has failed. This condition is unlikely.System Response:
A level 2 warning will be generated.
All functions of the ripper are disabled. The ripper will lower by gravity. The ripper will not be able to raise.Note: Ensure that the CID 885 FMI 05 diagnostic code for the solenoid is active. Note: The following procedure can create numerous related diagnostic codes. When all harnesses are reconnected, the related diagnostic codes will be shown as being not active. Clear all related diagnostic codes after this procedure is completed.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 machine harness from the solenoid.
At the machine harness connector for the solenoid, place a jumper wire from contact 1 (wire E798-PK(Pink)) to contact 2 (wire H868-WH(White)).
Observe the status of the CID 885 FMI 05 diagnostic code. Expected Result:The CID 868 FMI 05 diagnostic code remains active. Results:
NO - The diagnostic is no longer active. The solenoid has failed.Repair: . Replace the solenoid. Verify that the new solenoid corrects the problem.STOP
NO - The diagnostic code remains active. Proceed to test step 2.Test Step 2. CHECK THE SOLENOID CIRCUIT FOR AN OPEN.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the J1 and J2 machine harness connectors from the ECM.
At the machine harness connector for the solenoid, the jumper wire remains installed.
At the J1 machine harness connector, measure the resistance from contact J1-12 (wire E798-PK(Pink)) to J2-8 (wire H868-WH(White)). Expected Result:The resistance should be less than 5.0 ohms.Results:
YES - The resistance is less than 5.0 ohms. The machine harness is correct. Proceed to test step 3.
NO - The resistance measurement is not correct. There is an open circuit in the machine harness.Repair: The open is in the wire for the solenoid signal or in the wire for the return of the machine harness. Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK THE STATUS OF THE DIAGNOSTIC CODE
Inspect the contacts and clean the contacts of the harness connectors.
Reconnect all harness connectors.
Turn the disconnect switch and the key start switch to the ON position.
Clear all inactive diagnostic codes.
Operate the machine.
Stop the machine and place the parking brake switch in the ON position.
Check if the CID 885 FMI 05 diagnostic code for the solenoid is active. Expected Result:The CID 885 FMI 05 diagnostic code is not active.Results:
OK