SEAL-BACKUP 2331886 - Caterpillar

failure is recorded when the VIMS main module reads the voltage of the Display Data Link and the voltage is below normal. The circuit is shorted to ground.
DISCONNECT THE DISPLAY MODULES.
Disconnect the display modules from the machine harness one at a time and reconnect the display modules from the machine harness one at a time.
Check whether the fault CID 0819 FMI 06 is present. Expected Results: The fault CID 0819 FMI 06 remains.Results:
OK - Fault has not changed. The fault CID 0819 FMI 06 remains. Repeat this process for each module. Proceed to Step 2.
NOT OK - Fault is not displayed. Replace the module.
CHECK FOR SHORT TO GROUND
Turn the disconnect switch and the key start switch to the OFFposition.
Disconnect the machine harness from the VIMS main module and the display modules.
Measure the resistance at the machine harness connector of the VIMS main module between frame ground and the Display Data Link circuit connector contacts: 26, 27 and 28 Expected Results:The Resistance is greater than 5000 ohms.Results:
OK - Resistance is greater than 5000 ohms. The harness circuit resistance is correct. The VIMS main module is faulty. Replace the VIMS module. Refer to the Testing and Adjusting, "Module-Replace" section. STOP.
NOT OK - Resistance is less than 5000 ohms. The machine harness is faulty. The display data link is shorted to ground. Repair the machine harness or replace the machine harness. STOP.