5130, 5130B and 5230 Excavators, 784B, 785B, 785C, 789B, 789C, 793B and 793C Off-Highway Truck/Tractors and 992G, 994 and 994D Wheel Loaders Vital Information Management System (VIMS) Caterpillar

Illustration 1	g00507589
Schematic of the Automatic Lubrication Solenoid

This diagnostic code is recorded when the VIMS module reads the electrical circuit for this solenoid and the circuit is shorted to ground.

1. CHECK FOR SHORT TO GROUND

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

   2. Disconnect the machine harness connector from the module.

   3. Measure the resistance between contact 31 (wire 801-PK(Pink)) of the machine harness connector for the interface module and contact 2 (wire 201-BK(Black) or wire A251-BK(Black)) of the machine harness connector for the solenoid.

      Expected Results:The resistance is greater than 5000 ohms.

      Results:

      • OK - The resistance is greater than 5000 ohms. The circuitry of the solenoid harness is correct. Inspect the contacts of the harness connector. Reconnect the harness connector to the module and check the message center for the same diagnostic code. If the diagnostic code is present, the module has failed. Replace the VIMS interface module. Refer to the Testing and Adjusting, "Module-Replace" section. STOP.

      • NOT OK - The resistance is less than 5 ohms. The solenoid is shorted to ground or machine harness is shorted to ground. Verify the machine harness. Repair the machine harness or replace the machine harness, if necessary. If the machine harness is NOT the cause of this diagnostic code, then replace the solenoid. STOP.