BEARING-SLEEVE 2366271 - Caterpillar

System Operation Description:Use this procedure to troubleshoot the following diagnostic codes:
444-5 Starter Motor Relay current below normal
444-6 Starter Motor Relay current above normalThe Electronic Control Module (ECM) contains the logic and the outputs for starting the engine. The logic for starting the engine is customer programmable. The logic responds to inputs from the following components:
ECM
Emergency stop switch
Remote start switch
Data link
Other inputsThe most likely causes of the diagnostic code are a poor electrical connection or a problem in a wiring harness. The next likely cause is a problem with the fuel control relay. The least likely cause is a problem with the ECM.The troubleshooting procedure may generate additional diagnostic codes. Continue troubleshooting the cause of the original diagnostic code. Clear the diagnostic codes after the problem is resolved.The ECM supplies +Battery voltage to the air start relay when the logic determines that it is necessary. The ECM removes the voltage when the crank terminate relay is energized. The voltage is also removed if the customer programmable "Overcrank Time" has expired.If the engine is equipped with a prelubrication system, an air start may not occur until the prelubrication is complete. If there is a problem with the prelubrication system, the air start may not occur. There are no diagnostics for the prelubrication system. Refer to Systems Operation/Testing and Adjusting, "Air Starting System (Starting with an Air Prelube Pump)".
Illustration 1 g01393576
Schematic for the air starting motor systemTest Step 1. Inspect the Electrical Connectors and the Wiring
Set the engine control to the OFF/RESET position.
Illustration 2 g01392084
Location of the ECM connectors for the starting motor relay (typical left front side engine view) (1) J2/P2 ECM connectors
Illustration 3 g01393572
Location of the connectors for the starting motor relay (2) Starting motor relay (3) Connector for the starting motor relayNote: For the following steps, refer to Troubleshooting, "Inspecting Electrical Connectors".
Thoroughly inspect ECM connectors (1). Also, thoroughly inspect connectors (3) that are for starting motor relay (2) .
Check the allen head screw for each of the ECM connectors for the proper torque.
Illustration 4 g01393581
Terminal locations at the P2 ECM connector for the starting motor circuit (P2-10) Starting motor (P2-20) Return
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the circuit for the starting system.
Check the harness and wiring for abrasion and for pinch points from the starting system to the ECM.Expected Result:All connectors, pins, and sockets are connected properly. The connectors and the wiring do not have corrosion, abrasion, or pinch points.Results:
OK - The components are in good condition with proper connections. Proceed to Test Step 2.
Not OK - The components are not in good condition and/or at least one connection is improper.Repair: Perform the necessary repairs, when possible. Replace parts, if necessary.STOPTest Step 2. Check for Diagnostic Codes
Establish communication between the Caterpillar Electronic Technician (ET) and the ECM. Refer to Troubleshooting, "Electronic Service Tools", if necessary.Note: The 444-5 diagnostic code can only be detected when the output for the start command is on. The output is normally off when the engine control