STICK AS 3194507 - Caterpillar

Illustration 1 g01207599
Schematic of the Engine Speed Signal paths.The CID 0190 FMI 02 diagnostic code is recorded when the power train electronic control module (ECM) fails to receive an engine speed signal from the engine ECM. The power train ECM receives the engine speed signal from the engine ECM through the following signal paths:
Engine Spd Tach Wire
Cat Data Link
CAN Data Link A CID 0190 FMI 02 diagnostic code is recorded when the power train ECM fails to receive an engine speed signal from all of the signal paths.Note: The engine must be running in order for the power train ECM to show this diagnostic code.
Transmission shift points will be affected
Calibrations will be disabledTest Step 1. CHECK FOR ADDITIONAL RELATED DIAGNOSTIC CODES.
Ensure that all electronic control modules that use the Cat Data Link are connected.
Turn the battery disconnect switch and the key start switch to the ON position.
Acknowledge any active diagnostic codes that are currently displayed on the Caterpillar Monitoring System.
Verify that no related diagnostic codes are active.Expected Result:Other diagnostic codes are not active.Results:
OK - Other diagnostic codes are not active. Proceed to Test Step 2.
NOT OK - Other related diagnostic codes are active.Repair: Exit this procedure and perform the test procedures for the related diagnostic codes. Stop.Test Step 2. VERIFY THE HARDWARE AND THE SOFTWARE PART NUMBERS.
Verify whether the following part numbers are correct:
Software part number for the power train ECM
Software part number for the engine ECM
Software part number for the Caterpillar Monitoring SystemExpected Result:Consult your Caterpillar dealer for the correct configuration for the machine. All part numbers are correct.Results:
OK - All part numbers are correct. Proceed to Test Step 3.
NOT OK - All part numbers are not correct. One of the electronic control modules may have the wrong part number and/or the software configuration is not correct.Repair: The appropriate flash file needs to be flashed into the ECM. See Testing and Adjusting, "Electronic Control Module (ECM) - Flash Program". Stop.Test Step 3. INSPECT THE HARNESS CONNECTIONS.
Turn the key start switch and the battery disconnect switch to the OFF position.
Inspect the machine harness connections that are related to the Cat Data Link and Engine Spd Tach Wire. Make sure that the connectors are clean and tight.
Check the mating of each connector.
Check the wires at each connector.
Check each wire for nicks and/or signs of abrasion in the insulation.
Check for moisture at each connector.
Check for dirty contacts and/or corroded contacts.
Check each pin and check each socket.Expected Result:The machine harness connectors are tight and free of corrosion.Results:
OK - The machine harness connectors are tight and the connectors are free of corrosion. Proceed to Test Step 4.
NOT OK - The machine harness connections require repair.Repair: Repair the harness or replace the harness. Verify that the repair corrects the problem. Stop.Test Step 4. CHECK THE ENGINE SPD TACH WIRE FOR AN OPEN IN THE MACHINE HARNESS
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect machine harness connector J2 from the power train ECM.
Disconnect machine harness connector J1 from the engine