SEAL-LIP TYPE 4580869 - Caterpillar

connectors, pins and sockets are coupled and/or inserted and the harness and wiring are free of corrosion, of abrasion and of pinch points.Results:
OK - The harness and connectors appear to be OK. Proceed to Test Step 2.
Not OK - There is a problem with the connectors and/or wiring.Repair: Repair the connectors or wiring and/or replace the connectors or wiring. Ensure that all of the seals are properly in place and ensure that the connectors are coupled.Verify that the repair eliminates the problem.STOPTest Step 2. Check for Active Diagnostic Codes
Connect Caterpillar Electronic Technician (ET) to the service tool connector.
Restore electrical power to the ECM.
Monitor the active diagnostic code screen on Cat ET. Check and record any active diagnostic codes. Look for the following diagnostic codes:
41-3
41-4
100-10
262-3
262-4
1785-10Note: Wait at least 30 seconds in order for the diagnostic codes to become active.Expected Result:No diagnostic codes are active.Results:
OK - No diagnostic code is active.Repair: The problem is no longer present. If the problem is intermittent, refer to Troubleshooting, "Electrical Connectors - Inspect".STOP
Not OK - A 10 diagnostic code is logged at this time. The analog supply is not reaching the sensor. Proceed to Test Step 3.
Not OK - A 262-3 or 262-4 diagnostic code is active at this time. There is a problem with the sensor supply for the analog sensors. Proceed to Test Step 4.
Not OK - A 41-3 or 41-4 diagnostic code is active at this time. There is a problem with the sensor supply for the digital sensors. Proceed to Test Step 6.Test Step 3. Check the Supply Voltage at the Sensor Connector
Disconnect the harness connector for the intake manifold pressure sensor and disconnect the harness connector for the oil pressure sensor.
Restore the electrical power to the ECM.Note: Be sure to wiggle the harness during the following measurements in order to reveal an intermittent condition.
Measure the voltage between terminals A and B at the connector for each sensor.
Remove the electrical power from the ECM.
Connect all of the sensors.Expected Result:The voltage measurement is 5.0 0.2 VDC.Results:
OK - The voltage measurement is 5.0 0.2 VDC.Repair: The analog supply is reaching the sensor connectors. There may be a problem with a sensor. Perform the following procedure:
Clear all diagnostic codes.
Run the engine. Allow the engine to warm up. Check if a 10 code has been logged again.If the code becomes active or logged, the sensor is faulty. Replace the sensor. Verify that the repair eliminates the original problem.If the code does not become active or logged, there may be an intermittent problem in the harness or in a connector. If an intermittent problem is suspected, refer to Troubleshooting, "Electrical Connectors - Inspect" for the correct troubleshooting procedure.STOP
Not OK - The voltage measurement is not 5.0 0.2 VDC. There is a problem with the harness wiring or with the ECM. Proceed to Test Step 5.Test Step 4. Disconnect the 5 V Sensors while you Monitor the Active Diagnostic Codes
Ensure that the ECM is receiving electrical power.
Monitor the active diagnostic code screen on