OPTION AR 4448426 - Caterpillar

Test Step 2.
Not OK - The connectors and/or wiring need repair.Repair: Repair the connectors or wiring and/or replace the connectors or wiring.STOPTest Step 2. Check for Active Diagnostic Codes
Connect the electronic service tool to the service tool connector.
Turn the keyswitch to the ON position.
Monitor the active diagnostic code screen on the electronic service tool. Check and record any active diagnostic codes.Note: Wait at least 15 seconds in order for the diagnostic codes to become active.Expected Result:No diagnostic codes are active.Results:
OK - No diagnostic codes are active.Repair: The problem may have been solved during the preceding inspection of the harness and connectors. The problem may be intermittent. If the problem is intermittent, refer to Troubleshooting, "Inspecting Electrical Connectors".STOP
Not OK - A 338-05 diagnostic code or a 338-06 diagnostic code is active. Proceed to Test Step 3.Test Step 3. Check for Voltage at the Prelubrication Motor
Turn the keyswitch to the OFF position.
Connect the Caterpillar Electronic Technician (ET) to the cab service tool connector J42. Start Cat ET.
Connect a voltmeter between the positive terminal of the prelubrication motor and ground.
Turn the keyswitch to the ON position. The engine should be off.
Access the override for the prelubrication system.
Enable the override for the prelubrication system.
Measure the voltage between the positive terminal of the prelubrication motor and ground.
Disable the override for the prelubrication system.
Turn the keyswitch to the OFF position. The engine should be off.
Replace all wires to the original configuration.Expected Result:The voltage is 24 3 VDC.Results:
OK - The voltage is 24 3