HOSE AS 3887988 - Caterpillar

Illustration 1 g01965333
Schematic for the Right Implement Pump Pressure Sensor
This diagnostic code is associated with the Right Implement Pump Pressure Sensor. The FMI 03 means that the ECM has determined that the signal of the sensor is above the normal range.The output frequency of the pressure sensor is approximately 500 hertz. The duty cycle of the signal changes as the pressure changes.The possible causes of this diagnostic code are listed below:
The signal circuit for the sensor is open.
The signal circuit for the sensor is shorted to the +battery circuit.
The sensor has failed.
The power circuit or the ground circuit has failed.
The ECM has failed. This is unlikely.Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear the diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 2416 FMI 03 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.System Response:The diagnostic code will be logged into the internal memory of the ECM.Test Step 1. CHECK FOR POWER AT THE SENSOR
Do not disconnect the harness connector from the sensor.
At the back of the harness connector for the sensor, insert a multimeter probe along contact A (wire 146-GY(Grey)) for the voltage supply.
Turn the key start switch and the disconnect switch to the ON position.
Measure the voltage from contact A (wire 146-GY(Grey)) to contact B (wire 299-BK(Black)). Expected Result:The voltage is between 8 VDC and 32 VDC.Results:
OK - The voltage is between 8 VDC and 32 VDC. Proceed to Test Step 3.
NOT OK - The voltage is not between 8 VDC and 32 VDC. The circuit is open. Repair: Repair the machine harness or replace the machine harness.STOPTest Step 2. CHECK THE SIGNAL CIRCUIT OF THE SENSOR
Turn the key start switch and the disconnect switch to the OFF position.
At the back of the harness connector for the sensor, remove the multimeter probe from contact "A" and insert the probe along the signal wire (contact "C").
At the back of the harness connector for the sensor, insert the multimeter probe along the ground wire (contact "B").
Turn the disconnect switch and the key start switch to