WIRE- 6V2838 - Caterpillar

Illustration 1 g00678674This diagnostic code is recorded when the VIMS electronic control module reads the current of the display power supply circuit and the current is above normal. Normal voltage of the display power supply is 12.0 0.5 DCV. Test Step 1. CHECK THE VOLTAGE AT THE CONNECTOR OF THE VIMS ELECTRONIC CONTROL MODULE.
Use the 7X-1710 Cable probes to measure the voltage between contacts J2-65 (wire E707-GN(Green)) to contact J2-66 (wire E972-WH(White)). Do NOT disconnect the harness from the VIMS electronic control module. Expected Result:The voltage is 12.0 0.5 DCV.Results:
OK - The voltage is 12.0 0.5 DCV. The voltage of the display power supply is correct. Check the message center for the same diagnostic code. If the diagnostic code is still present the VIMS electronic control module has failed.Repair: Replace the VIMS electronic control module . Refer to the Testing and Adjusting, "Module-Replace" section.STOP
NOT OK - The voltage is NOT 12.0 0.5 DCV. The voltage of the display power supply is NOT correct. Proceed to test step 2.Test Step 2. DISCONNECT THE DISPLAY MODULES.
Use the 7X-1710 Cable probes to monitor the voltage between contacts J2-65 (wire E707-GN(Green)) to contact J2-66 (wire E972-WH(White)). Do NOT disconnect the harness from the VIMS electronic control module.
Disconnect the display modules from the machine harness one at a time. After each module is disconnected, check the voltage reading. Expected Result:The voltage is 12.0 0.5 DCV.Results:
OK - The voltage is 12.0 0.5 DCV. The voltage of the display power supply is correct. Repair: Replace the VIMS electronic control module. Refer to the Testing and Adjusting, "Module-Replace" section. STOP
NOT OK - The voltage is NOT 12.0 0.5 DCV. The voltage of the display power supply is NOT correct. If the voltage of the display power supply is NOT 12.0 0.5 DCV after all of the display module are disconnected. Proceed to test step 3.Test Step 3. CHECK FOR SHORT TO GROUND
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness from the VIMS electronic control module and the display modules.
Measure the resistance between frame ground and connector contact J2-65 (wire E707-GN(Green)) of the display power supply circuit.
Measure the resistance between frame ground and connector contact J2-66 (wire E972-BU(Blue)) of the display power supply circuit. Expected Result:The resistance is greater than 5000 ohms.Results:
OK - Resistance is greater than 5000 ohms. The harness circuit resistance is correct. The VIMS electronic control module has failed. Repair: Replace the VIMS electronic control module. Refer to the Testing and Adjusting, "Module-Replace" section.STOP
NOT OK - Resistance is less than 5 ohms. The machine harness has failed. Repair: Repair the machine harness or replace the machine harness.STOP