DOOR AS 3390118 - Caterpillar

Illustration 1 g01103901
Note: The Engine Speed Sensor is commonly referred to as magnetic pickup.Test Step 1. PERFORM THE INITIAL CHECK.
Check for active diagnostic codes on the engine ECM and the EMCP 3. If any codes are present, correct the diagnostic codes first.Expected Result:No other diagnostic codes or indicators are active.Results:
OK - No other diagnostic codes or indicators are active. Proceed to Test Step 2
NOT OK - Another diagnostic code is active or an indicator is active.Repair: Exit this procedure. Troubleshoot the active code or indicator. Resume normal operation and verify that the problem has been corrected.STOPTest Step 2. CHECK THE SETPOINTS.
View the Engine Speed Monitor Setpoints. Make a note of all the setpoints. See Testing and Adjusting, "Electronic Control Module (Generator Set) - Configure". Compare the set points against the default set points of the particular generator set.Expected Result:The set points are correct.Results:
OK - The setpoints are correct for your particular generator set. Proceed to Test Step 3
NOT OK - The setpoints are NOT correct.Repair: Change the set points to the desired values. Reset the generator set. Resume normal operation and verify that the problem has been corrected.STOPTest Step 3. CHECK THE HARNESS AND THE SPEED SENSOR.
Press the Stop key on the EMCP 3 control.
Disconnect the harness connector from the EMCP 3.
At the EMCP 3 harness connector, measure the resistance from contact "66"