561N, 572R Series II and 572R Pipelayers and D10R, D11R, D5M, D5N, D6M, D6N, D6R, D6R Series II, D7R, D7R Series II and D8R Series II Track-Type Tractors Power Train Electronic Control System Caterpillar

Illustration 1	g00631263
Schematic of the Solenoid for the Right Steering Brake

This diagnostic code is for the Solenoid for the Right Steering Brake.

This diagnostic code is recorded when current of the solenoid is below normal.

Note: Ensure that the CID 0690 FMI 05 for the solenoid is on hold and that the fault present indicator shows "SERV CODE".

Test Step 1. CHECK THE SOLENOID.

1. Turn the key start switch to the ON position. Do not start the engine. Ensure that CID 0690 FMI 05 for the solenoid is on hold and that the fault present indicator shows "SERV CODE".

2. Place the parking brake switch in the OFF position.

3. Disconnect the machine harness from the solenoid.

4. At the machine harness connector for the solenoid, place a jumper from contact 1 to contact 2.

5. Observe the status of the fault present 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 is faulty. Repeat this step in order to verify the solenoid failure. Replace the solenoid.

  STOP

• NO - "SERV CODE" is not displayed as the jumper is installed and the jumper is removed. The diagnostic code remains. Proceed to Test Step 2.

Test Step 2. CHECK THE SOLENOID CIRCUIT FOR AN OPEN.

1. Turn the key start switch to the OFF position.

2. Disconnect the machine harness connectors J1 and J2 from the ECM.

3. At the machine harness connector for the solenoid, place a jumper from contact 1 to contact 2.

4. 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.

  STOP

Test Step 3. DETERMINE IF THE DIAGNOSTIC CODE IS STILL ACTIVE.

1. Inspect the contacts and clean the contacts of the harness connectors.

2. Reconnect all harness connectors.

3. Turn the key start switch to the ON position.

4. Enter service mode of the Caterpillar Monitoring System and clear all inactive diagnostic codes.

5. Operate the machine.

6. Stop the machine and place the parking brake switch in the ON position.

7. Determine if the CID 0690 FMI 05 for the solenoid is present .

Expected Result:

CID 0690 FMI 05 for the solenoid is present. "SERV CODE" is showing.

Results:

• YES - CID 0690 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 may greatly reduce repair time. See the Testing and Adjusting, "Electronic Control Module (ECM) - Replace".

  STOP

• NO - CID 0690 FMI 05 for the solenoid is not present. "SERV CODE" is not showing.

  Repair: The problem does not exist at this time. The initial problem was probably caused by a poor electrical connection or a short at one of the harness connectors that was disconnected and reconnected. Resume normal machine operation.

  STOP