ENGINE AR 4P1244 - Caterpillar

Note: Check for any related diagnostic codes that are displayed on the Caterpillar ET before performing the following Test Steps.Test Step 1. CHECK FOR PUSH BUTTON SWITCHES
Check the work tool joystick control for the type of control.Expected Result:The work tool joystick control should have push button switches for A1 and A2.Results:
OK - The work tool joystick control uses push button switches for A1 and A2. Proceed to Test Step 2.
NOT OK - The work tool joystick control uses an auxiliary control in order to operate A1 and A2. Proceed to Test Step 10.Test Step 2. CHECK FOR PROPER OPERATION FOR A1
Enable the machine.
Press the switch (A1) .Expected Result:The auxiliary hydraulics (A1) should be active.Results:
OK - The auxiliary hydraulics (A1) are active. Proceed to Test Step 3.
NOT OK - The auxiliary hydraulics (A1) are not active. Proceed to Test Step 4.Test Step 3. CHECK FOR PROPER OPERATION FOR A2
Release the A1 switch.
Press the switch (A2).Expected Result:The auxiliary hydraulics (A2) should be active.Results:
OK - The auxiliary hydraulics (A2) are active.Repair: There is no problem at this time. Stop.
NOT OK - The auxiliary hydraulics (A2) are not active. Proceed to Test Step 7.Test Step 4. CHECK THE STATUS OF THE SWITCH
Press the switch (A1).
Observe the status on the Caterpillar ET.
Release the switch.
Observe the status on the Caterpillar ET.Expected Result:The switch status should have changed from the "CLOSED" status to the "OPEN" status.Results:
OK - The switch status changed from the "CLOSED" status to the "OPEN" status. Proceed to Test Step 5.
NOT OK - The switch status did not change from the "CLOSED" status to the "OPEN" status. Proceed to Test Step 6.Test Step 5. CHECK THE OUTPUT OF THE ECM
Remove the