ENGINE AR-COMPLETE 2325510 - Caterpillar

Illustration 1 g01548493
This diagnostic code is active when there is noise or an intermittent signal on the instance lines (left side or right side identification of the harness), or when the function instance has changed during operation.Test Step 1. CHECK FOR RELATED DIAGNOSTICS
Turn the "Power/Setup" Switch to the "I" position.
Toggle a "Menu Scroll" Switch until "Diagnostics" is highlighted.
From the "Diagnostics" Menu, toggle a "Menu Scroll" Switch until "Fault History" is highlighted on the LCD.Expected Result:"CB 30" is not active.Results:
YES - "CB 30" is not active. Proceed to Test Step 2.
NO - "CB 30" is active.Repair: Proceed to Troubleshooting, "CB 30 Duplicate Sensor Serial Number".STOPTest Step 2. CHECK THE HARNESS FOR AN OPEN.
Move the "Power/Setup" Switch on the display to the OFF position.
Turn the key start switch and the disconnect switch for the machine to the OFF position.
Disconnect the harness from the right knuckle connector.
Measure the resistance between pin "B" and pin "F".Expected Result:The resistance measurement 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 resistanceis 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 T744-WH of the machine harness. Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK THE CONNECTOR FOR AN OPEN.
Make the following measurement at the left knuckle connector. Measure the resistance between pin "B" and pin "F".Expected Result:The resistance is less than 5.0 ohms.Results:
OK - The resistance is greater than 5000 ohms. The machine harness is correct. Proceed to Test Step 4.
NOT OK - The resistance is less than 5000 ohms. The resistance measurement is not correct. There is a short circuit in the connector.Repair: Contact "B" is shorted to wire T744-WH of the machine harness. Repair the connector or replace the connector that is located on the right hand side of the knuckle connectors.STOPTest Step 4. CHECK IF THE DIAGNOSTIC CODE REMAINS.
Inspect the contacts of the harness connectors and clean the harness connectors.
Reconnect all harness connectors.
Turn the disconnect switch and the key start switch to the ON position.
Move the "Power/Setup" Switch on the display to the ON position.
Operate the machine.
Check the status of the "ST 8".Expected Result:The "ST 8" diagnostic code is active.Results:
YES - The "ST 8" diagnostic code is active. The diagnostic code has not been corrected. Repair: Exit this procedure and perform this procedure again. If the cause of the diagnostic code is not found, contact your Technical communicator for a possible consultation with Caterpillar.STOP
NO - The diagnostic code is no longer active. The diagnostic code was probably caused by a poor connection at one of the harness connectors. Repair: Resume normal machine operation.STOP