GASKET 0002543 - Caterpillar

Illustration 1 g01004979
Schematic of the Action LampTest Step 1. CHECK THE HARNESS FOR A SHORT TO GROUND.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the J1 and J2 machine harness connectors from the ECM.
Disconnect the machine harness from the monitor.
At the J2 machine harness connector, measure the resistance from the solenoid contact J2-9 (wire J848-BU) to all possible sources of ground.Expected Result:The resistance should be greater than 5000 ohms for each measurement. Results:
OK - The resistance is greater than 5000 ohms for each measurement. The machine harness is correct. The monitor has failed.Repair: Replace the monitor.STOP
NOT OK - The resistance is NOT correct. There is a short in the machine harness. The short is between signal contact J2-9 (wire J848-BU) and the circuit with the low resistance measurement.Repair: Repair the harness or replace the harness.STOP