PISTON AS 5433722 - Caterpillar

Illustration 1 g01024122
Typical circuit with EMCP IITest Step 1. Check for Connector Damage.
Turn the ECS to the OFF/RESET position.
Turn the battery disconnect switch to the OFF position.
Thoroughly inspect the ECM connectors J1/P1 and J2/P2. Inspect all of the other connectors. Refer to the diagnostic functional test Troubleshooting, "Inspecting Electrical Connectors" for details.
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector that are associated with the circuit.
Check the ECM connector (allen head screw) for the proper torque of 6.0 N m (55 lb in).
Check the customer connector (allen head screw) for the proper torque of 2.25 0.25 N m (20 2 lb in).
Check the harness and the wiring for abrasion and pinch points.Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted, and the harness and wiring are free of corrosion, of abrasion or of pinch points.Results:
OK - The connectors and wiring are okay. Proceed to Test Step 2.
Not OK - The connectors and/or wiring need repair.Repair: Repair the connectors or wiring and/or replace the connectors or wiring. Stop.Test Step 2. Attempt to Start the Engine
Connect the Cat ET to the service tool connector.
Turn the battery disconnect switch to the ON position.
Turn the ECS to the STOP position.
Observe the "startup mode" parameters on the Cat ET status screen.
Turn the ECS to the START position. Continue monitoring engine parameters as the engine cranks.
The crank cycle will continue for the time that is equal to the cycle crank time that has been programmed or the crank cycle will continue until the engine speed reaches the crank terminate speed.
Turn the ECS to the OFF/RESET position.Expected Result:The status screen for the "startup mode" parameter displays "CRANK". The engine cranks.Results:
OK - The "startup mode" parameter on the status screen on Cat ET displays "CRANK". The engine cranks.Repair: The problem may be intermittent. If the problem is intermittent, perform the diagnostic functional test Troubleshooting, "Inspecting Electrical Connectors". Stop.
Not OK - Engine Doesn't Crank - The "startup mode" parameter on the status screen on Cat ET displays "CRANK". The engine will not crank. Proceed to Test Step 3.
Not OK - Status Screen - The "startup mode" parameter on the status screen on Cat ET does not display "CRANK".Repair: Perform the diagnostic functional test Troubleshooting, "Engine Control Switch (ECS)". Stop.Test Step 3. Manually Crank the Engine.
Turn the battery disconnect switch to the OFF position.
Open the power distribution box that is located on the left side of the engine, close to the starter motors.
Connect one probe of a digital voltmeter to the -Battery terminal. Connect the other probe of the digital voltmeter to wire 314-PU on terminal 2 of the magnetic switch.
Turn the battery disconnect switch to the ON position.
Turn the ECS to the START position.
Monitor the voltage on the digital voltmeter.
Turn the ECS to the OFF/RESET position.Expected Result:The voltage measures 24 3 VDC.Results:
OK - The voltage measures 24 3