CUP 5P8298 - Caterpillar

System Operation Description:The engine uses Electronic Unit Injectors that are mechanically actuated and electronically energized. The Electronic Control Module (ECM) sends a 105 volt pulse to each injector solenoid. The pulse is sent at the proper time and at the correct duration for a given engine load and speed. If a diagnostic is detected in the solenoid circuit, the ECM will disable that solenoid circuit. The ECM keeps the solenoid circuit disabled for 10 revolutions of the crankshaft. The ECM then tries to fire the injector. If the diagnostic is still present, the ECM will disable the circuit for another 10 revolutions of the crankshaft. This sequence of events will be repeated indefinitely until the problem is corrected.The 105 volt pulse can be individually cut out to aid in troubleshooting misfire problems by using the Electronic Technician (ET). The solenoid is mounted on top of the fuel injector body.Test Step 1. Check the Electrical Connectors and the Wiring.
Turn the Battery switch for the ECM to the OFF position.
Turn the breaker at the battery to the OFF position.
Thoroughly inspect the ECM connector J2/P2. Inspect all of the other connectors. Refer to 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 should be free of corrosion, abrasion or pinch points.Results:
OK - The wiring and connectors are okay. Proceed to Test Step 2.
Not OK - Repair the wiring and connectors or replace the wiring or the connectors. Ensure that all of the seals are properly connected. Verify that the repair eliminates the problem.STOPTest Step 2. Check for LOGGED Diagnostic Codes.
Turn the breaker at the battery to the ON position.
Turn the battery switch for the ECM to the OFF position.
Connect the ET.
Turn the battery switch for the ECM to the ON position.
Observe the diagnostic codes on the ET.Expected Result:A CID-FMI 1-05 to 16-05 or 1-06 to 16-06 should not be logged.Results:
OK - A CID-FMI 1-05 to 16-05 or 1-06 to 16-06 is not logged. Proceed to test step 3.
Not OK - A CID-FMI 1-05 to 16-05 or 1-06 to 16-06 is logged. Proceed to test step 5.Test Step 3. Perform the Cylinder Cutout Test.
Engine power is reduced when a properly functioning cylinder is cut out. Make sure that you will not damage auxiliary or driven equipment if the engine power is suddenly reduced.
Turn the battery switch for the ECM to the OFF position.
Verify that the ECM connector J2/P2 and the injector connectors J4/P4 through J19/P19 are properly connected.
Install the ET.
Turn the Battery switch for the ECM to the ON position.
Turn