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


CID 0438 FMI 05 Solenoid Valve (No. 1) (Warm Up) Current Below Normal - Test

Usage:

793B 1HL


Illustration 1g00507587
Schematic Warm Up Valve No. 1 Solenoid

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

  1. CHECK FOR OPEN HARNESS

    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 from contact 31 of the solenoid circuit (wire E761-BU(Blue)) to the solenoid return (frame ground).

      Expected Results: The resistance is 30 to 65 ohms.

      Results:

      • OK - The resistance is 30 to 65 ohms. The resistance of the solenoid circuitry is correct. Inspect the contacts of harness connectors. Reconnect the harness connector to the module and check the message center for the same diagnostic code. If the diagnostic code is present, the interface module has failed. Replace the VIMS interface module. Refer to the Testing and Adjustment, "Module - Replace" section. STOP.

      • NOT OK - The resistance is NOT 30 to 65 ohms. The solenoid has failed or the circuitry of the solenoid harness has failed. Verify the machine harness. Repair the machine harness or replace the machine harness, if necessary. If the machine harness is not the cause of the diagnostic code then replace the solenoid. STOP.

Caterpillar Information System:

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