KIT-BEVEL GEAR 4900030 - Caterpillar

Illustration 1 g00678674
Schematic of the SPI Data Link
This diagnostic code is recorded when the VIMS electronic control module reads the voltage of the SPI data link and the voltage is below normal. The circuit is shorted to ground.Test Step 1. 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 diagnostic code CID 0819 FMI 06 is still active. Expected Result:The diagnostic code CID 0819 FMI 06 is still active.Results:
OK - The diagnostic code has not changed. Diagnostic code CID 0819 FMI 06 is still active. Repeat this process for each display module. Proceed to test step 2.
NOT OK - The diagnostic code is no longer active. Repair: Replace the display module.STOPTest Step 2. CHECK FOR A SHORT TO GROUND IN THE MACHINE HARNESS.
Turn the disconnect switch and the key start switch to the OFFposition.
Disconnect the machine harness connectors J1 and J2 from the VIMS electronic control module and disconnect the machine harness connectors from the display modules.
Measure the resistance at the machine harness connector of the VIMS electronic control module between frame ground and connector contacts J2-10, J2-20 and J2-28 of the SPI Data Link circuit. Expected Result:The resistance is greater than 5000 ohms.Results:
OK - The resistance is greater than 5000 ohms. The harness circuit resistance is correct. The VIMS electronic control module has failed.Repair: It is unlikely that the VIMS electronic control module has failed. Exit this procedure and perform this procedure again. If the cause of the failure is not found then replace the VIMS electronic control module. Refer to the Testing and Adjusting, "Module-Replace" sectionfor additional information.STOP
NOT OK - The resistance is less than 5 ohms. The machine harness has failed. The SPI data link is shorted to ground.Repair: Repair the machine harness or replace the machine harness. STOP