GEAR 0952946 - Caterpillar

Illustration 1 g00630905
Schematic of the Solenoid for the Left Steering Brake
This diagnostic code is for the solenoid for the left steering brake.This diagnostic code is recorded when current of the solenoid is below normal. Note: Ensure that the CID 0689 FMI 05 for the solenoid is on hold and that the diagnostic code indicator shows "SERV CODE". Test Step 1. CHECK THE SOLENOID.
Turn the key start switch to the ON position. Do not start the engine. Ensure that CID 0689 FMI 05 for the solenoid is on hold and that the diagnostic code indicator shows "SERV CODE".
Place the parking brake switch in the OFF position.
Disconnect the machine harness from the solenoid.
At the machine harness connector for the solenoid, place a jumper from contact 1 to contact 2.
Observe the status of the diagnostic code indicator. Expected Result:"SERV CODE" is displayed and "SERV CODE" is not displayed as the jumper is installed and the jumper is removed.Results:
YES - "SERV CODE" is displayed and "SERV CODE" is not displayed as the jumper is installed and the jumper is removed. Repair: The circuit is correct. The solenoid has failed. Repeat this step in order to verify the solenoid failure. Replace the solenoid.STOP
NO - "SERV CODE" is displayed and "SERV CODE" is displayed as the jumper is installed and the jumper is removed. Proceed to Test Step 2.Test Step 2. CHECK THE SOLENOID CIRCUIT FOR AN OPEN.
Turn the key start switch to the OFF position.
Disconnect the machine harness connectors J1 and J2 from the ECM.
At the machine harness connector for the solenoid, place a jumper from contact 1 to contact 2.
At machine harness connector J2, measure the resistance from the solenoid signal contact to J2-3 . Expected Result:There should be less than 5.0 ohms resistance. Results:
OK - There is less than 5.0 ohms resistance. The machine harness is correct. Proceed to Test Step 3.
NOT OK - There is not less than 5.0 ohms resistance. Repair: There is an open circuit in the machine harness. The open is in the wire for the solenoid signal or in wire 975-WH(White) of the machine harness. Repair the machine harness or replace the machine harness.STOPTest Step 3. DETERMINE IF THE DIAGNOSTIC CODE IS STILL ACTIVE.
Inspect the contacts and clean the contacts of the harness connectors.
Reconnect all harness connectors.
Turn the key start switch to the ON position.
Enter service mode of the Caterpillar Monitoring System and clear all inactive diagnostic codes.
Operate the machine.
Stop the machine and place the parking brake switch in the ON position.
Determine if the CID 0689 FMI 05 for the solenoid is present . Expected Result:CID 0689 FMI 05 for the solenoid is present. "SERV CODE" is showing.Results:
YES - CID 0689 FMI 05 for the solenoid is present. "SERV CODE" is showing.Repair: Exit this procedure and perform the diagnostic code procedure again. If the problem persists, the ECM may have failed. Prior to replacing an ECM, always contact your dealership's Technical Communicator for possible consultation with Caterpillar. This consultation