FILTER ELEMENT AS-AIR 2453818 - Caterpillar

System Operation Description:The ECM has the ability to automatically prelube the engine. This may increase the life of certain engine parts.The following conditions are possible: OFF, ON, COMPLETED and DISABLED.The OFF status is entered when a engine shutdown is active.The "ON" status is entered when a engine shutdown is not active and the Start Switch is active.The "COMPLETED" status is entered when the engine prelube duration is reached or when the engine prelube pressure switch is activated.The "DISABLED" status is entered when the engine prelube duration is programmed to 0.The prelube function will be aborted when one of the following conditions occur:
The engine prelube pressure switch is activated.
The User defined engine prelube duration has been reached.
Illustration 1 g00850406
Test Step 1. Check for Connector Damage
Turn the engine control to the OFF position.
Turn the breaker at the battery to the OFF position.
Thoroughly inspect the ECM connectors J1/P1 and 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:The connectors and wiring should be free of the following problems: damage, corrosion, abrasion and incorrect attachment.Results:
OK - The connectors and wiring are okay. Proceed to test step 2.
Not OK - The connectors and/or wiring are not okay.Repair: Repair the connectors or wiring and/or replace the connectors or wiring. Stop.Test Step 2. Check the Engine Prelube Pressure Switch.
Disconnect the main power.
Disconnect ECM connector J1/P1.
Measure the resistance between the engine prelube pressure switch P1-19 and the Digital Return P1-29.
Reconnect the ECM connector J1/P1.Expected Result:The resistance should be greater than 20,000 Ohms.Results:
OK - The resistance is greater than 20,000 Ohms. The engine prelube pressure switch is not active. Proceed to test step 3.
Not OK - The resistance is less than 20,000 Ohms. The engine prelube pressure switch is active. Verify that the engine does not have a residual oil pressure that is high enough to activate the switch. If there is no residual oil pressure the switch is not operating correctly or there is a problem with the wiring. Proceed to test step 4.Test Step 3. Check the Status of the Prelube Switch on ET.
Activate a Normal Stop.
Disconnect the main power.
Connect the ET to the service tool connector.
Connect the main power.
Observe the parameters for the engine prelube and for the ignition switch.Expected Result:The parameter for the engine prelube should display "OFF". The parameter for the ignition switch should display "OFF".Results:
OK - The status parameters are correct. Proceed to test step 5.
Prelube Disabled - The parameter for the engine prelube displays "DISABLED".Repair: Set the engine prelube duration to a value that is greater than zero. Restart this test. Stop.
Ignition Switch NOT