HOSE AS 2762825 - Caterpillar

Illustration 6 g01395922
Top view of the front of the engine (4) Unfiltered engine oil pressure sensor (5) Filtered engine oil pressure sensor
During engine operation, disconnect the connector for unfiltered engine oil pressure sensor (1). Observe the "Engine Control Alarm Status" indicator.If you are only troubleshooting a 324-03 Warning Lamp short to +batt, proceed to the "Expected Result".Note: When the filtered engine oil pressure sensor is disconnected, the engine will shut down.
Disconnect the connector for filtered engine oil pressure sensor (2). Observe the "Fault Relay" indicator.
Use the "Diagnostics" screen on Cat ET to look for active diagnostic codes.Expected Result:The "Engine Control Alarm Status" indicator illuminated and a 542-03 Unfiltered Engine Oil Pressure open/short to +batt was activated when the unfiltered engine oil pressure sensor is disconnected.The "Fault Relay" indicator illuminated and a 100-03 Engine Oil Pressure open/short to +batt was activated when the filtered engine oil pressure sensor is disconnected. The engine was shut down.Results:
OK - The indicators, diagnostic codes, and shutdown were activated according to the "Expected Result". The outputs for the status indicators seem to be operating correctly at this time. The original problem seems to be resolved.Repair: The original diagnostic code was probably caused by a poor electrical connection.If there is an intermittent problem that is causing the codes to be logged, refer to Troubleshooting, "Inspecting Electrical Connectors".STOP
Not OK - The "Engine Control Alarm Status" indicator and/or the "Fault Relay" indicator did not illuminate normally when the sensors were disconnected. A 323-03 diagnostic code and/or a 324-03 diagnostic code was generated. There is a problem with the output for the status indicators. The 542-03 diagnostic code and the 100-03 diagnostic codes were generated. The engine was shut down. Connect the connectors and proceed to Test Step 4.Test Step 4. Measure the Voltage for the Suspect Output at the P2 ECM Connector
Set the engine