CAP-PLUG 2760747 - Caterpillar

Illustration 1 g03319187Speed Lever PWM SensorThis diagnostic code is recorded when the ECM reads the sensor signal as below normal or shorted to ground.Note: The CID 013 FMI F00 diagnostic code may be present only under certain extreme operating conditions such as lever full forward of lever full reverse. The sensor is probably out of specification. Replace the sensor.The possible causes of this diagnostic code are:
+V circuit from the ECM to the sensor is open.
Signal circuit is shorted to ground.
The PWM buffer is malfunctioning.
The ECM has failed. This situation is unlikely.System Response:The results of this diagnostic code are:
Propel diagnostic code lamp on the machine operator station will be ON.
The machine will not propel under this condition.Note: Ensure that the diagnostic code CID 013 FMI F01 for the PWM buffer is on hold and that the diagnostic code present indicator on the ECM display is ON. This procedure can cause new diagnostic codes to be recorded. Ignore these created codes. When the procedure is completed, clear the created codes.Test Step 1. Check Sensor
Turn the key start switch to the ON position.
Access Service Mode 1. Place the diagnostic code CID 013 FMI F01 on hold. Ensure that the red diagnostic code present indicator on the ECM Display is ON. Refer to the "Accessing Diagnostic Information" module in this manual.
While observing the status of the diagnostic code present indicator, disconnect the machine harness from the PWM buffer. Expected Result:The diagnostic code present indicator on the ECM display turns OFF.Results:
OK - The diagnostic code present indicator on the ECM display turns OFF.Repair: The PWM buffer or the potentiometer is malfunctioning.Proceed to Test Step 4.
NOT OK - The diagnostic code present indicator on the ECM display remains ON. The machine harness or the ECM may be malfunctioning. Proceed to Test Step 2.Test Step 2. Check Signal Circuit For Short To GroundThe machine harness remains disconnected from the PWM buffer.
Turn the key start switch to the OFF position.
Disconnect the machine harness from the ECM.
At the machine harness connector for the ECM, measure the resistance from the signal circuit contact 27 (wire P346-WH(White)) to ground. Expected Result:The resistance measurement should be greater than 5000 ohms.Results:
OK - The resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed to Test Step 3.
NOT OK - The resistance measurement is less than 5000 ohms. There is a short in the machine harness. The short is between the signal circuit and a ground source. The possible ground sources are wire P200-BK(Black), wire P202-BR(Brown), and frame ground. Repair or replace the machine harness.STOPTest Step 3. Check To See If Diagnostic Code Remains
Clean the contacts of the harness connectors.
Reconnect all harness connectors.
Turn the key start switch to the ON position.
Enter service mode 1 on the ECM three-digit display. Clear all inactive diagnostic codes.
Operate the machine.
Check to see if the CID 013 FMI F01 diagnostic code for the sensor is present (diagnostic code present indicator ON). Expected Result:The CID 013 FMI F01 diagnostic code for the sensor is not present.Results:
OK