1M8041 REBUILD KIT Caterpillar parts
Rating:
Alternative (cross code) number:
CA1M8041
1M-8041
1M8041
CA1M8041
1M-8041
1M8041
Weight: 0.30 pounds 0 kg.
Information:
Illustration 1 g01232682
Transmission Output Speed Sensor CircuitThis diagnostic code is associated with the transmission output speed sensor. The FMI 02 means that the ECM has determined that the signal frequency or the signal pulse width is not within the expected range. If the transmission speed is above 200 rpm when the sensor fails, then a CID 0191 FMI 02 code will be logged. If the transmission speed is between 0 rpm and 200 rpm when the sensor fails, then a CID 0191 FMI 11 code will be logged.System Response:The diagnostic code of CID 0191 FMI 02 will be logged in the internal memory of the ECM.The possible causes of this diagnostic code are listed below:
The sensor has failed. (No signal for more than two seconds.)
The signal circuit for the sensor is shorted to ground.
The ECM has failed. This is unlikely. Test Step 1. CHECK THE SENSOR.
Turn the disconnect switch and the key start switch to the ON position.
Ensure that the diagnostic code is active.
Observe the status of the diagnostic code. Disconnect the sensor from the machine harness.Expected Result:The CID 0191 FMI 02 remains active. The FMI has not changed and the "02" is still active.Results:
OK - The diagnostic code remains active. The sensor is correct. Proceed to Test Step 2.
NOT OK - The diagnostic code is no longer active. The sensor has failed.Repair: Replace the sensor.STOPTest Step 2. CHECK THE WIRING HARNESS OF THE SENSOR FOR A SHORT TO GROUND.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness from the sensor.
Disconnect the machine harness connector(s) from the ECM.
At the machine harness connector for the ECM, measure the resistance from the signal contact J2-24 (wire 768-OR) of the machine harness to all possible sources of ground. Measure the resistance to all contacts of the machine harness connectors for the ECM.Expected Result:Each resistance measurement is greater than 5000 ohms.Results:
OK - Each resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed to Test Step 3.
NOT OK - One or more resistance measurements is not correct. There is a short in the machine harness. Repair: The short is between signal contact J2-24 (wire 768-OR) and the circuit with the low resistance measurement. Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK IF THE DIAGNOSTIC CODE REMAINS.
Inspect the contacts of the harness connectors and clean the contacts.
Reconnect all harness connectors.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Check the status of the CID 0191 FMI 02.Expected Result:The CID 0127 FMI 04 is active. Results:
YES - The CID 0191 FMI 02 is active. The diagnostic code has not been corrected. The ECM may have failed.Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this procedure again. If the cause of the diagnostic code is not found, replace the ECM. See Testing and Adjusting, "Electronic Control Module (ECM) - Replace".STOP
NO - The CID 0191 FMI 02 is not active. The
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