HYDRAULIC AR-3 VALVE 3967912 - Caterpillar

Table 1
J2-67     J2-68     J2-70    
0.5V to 4.5V     0.0V     0.0V    Expected Result:The shield wire does not have a voltage. A voltage on the shield wire means that there is a short to the battery. The voltage of the wires for the Data Link is correct.Results:
OK - The voltages of the wires for the Data Links are correct. Proceed to Test Step
NOT OK - The voltage is greater than 4.5 V.Repair: Repair the machine harness or replace the harness. Proceed to Test Step 7
NOT OK - The voltage is less than 0.5 V. Proceed to Test Step 3.Test Step 3. CHECK FOR A SHORT TO GROUND
Turn the keyswitch and the disconnect switch to the OFF position.
Disconnect the J2 harness connector for one of the ECM modules.
Measure the resistance of wire (F711-YL) to an unpainted frame ground. Measure the resistance of wire (F712-GN) to an unpainted frame ground.Expected Result:The