CLAMP 3301301 - Caterpillar

Illustration 9 g03643619
Inspect the module. Note the color and sequence of the lights on top.
Power-on LED (2) is green. Status LED (1) is yellow or red. The status LED flashes red when an error has been detected.
Ensure that the electrical connector is seated.
Cycle the key power.Expected Result: Power-on LED (2) is solid green, and status LED (1) is flashing yellow.Results:OK - The LEDs indicate a properly operating module, and no errors are present in the system.Not OK - Status LED (1) flashes red, indicating a failure, or the "Rear Mount" module shows diagnostics on the WDS display.Repair: Replace the XA2 I/O Module.STOP.Hydraulic Pressure Sensor
This diagnostic code is recorded when the WDS hydraulic pressure sensor has malfunctioned. Voltage signals of less than 0.3 VDC or greater than 5 VDC can generate this fault. Pressure signals of less than −103 kPa (−15 psi) or greater than 34474 kPa (5000 psi) while the engine speed is greater than 500 rpm can also generate this fault.
Illustration 10 g03643548
Illustration 11 g03643804
The possible causes of this diagnostic code are listed below:
Moisture entry into the connector
Electrical harness damage
Damage to the sensor
Damaged XA2 module
Check for Moisture Entry into Connector
Park the machine. Turn key start switch to the off position.
Turn the machine disconnect switch to the off position.
Disconnect connector "R-C2" from the hydraulic pressure sensor.
Thoroughly dry both sides of the connector.
Inspect the pins for corrosion. Replace the pins if necessary.
Reassemble the connector with a light coating of dielectric grease.
Check the continuity of each pin through the connector.Expected Results: All connections are continuous through the connector.Results:OK - All connections are continuous. Proceed to Step 2.Not OK - One or more of the connections did not show continuity, and the diagnostic is still present.Repair: Replace the pins and the connector.
Check Electrical Harness
Park the machine. Turn key start switch to the on position.
Disconnect connector "R-C2" from the hydraulic pressure sensor.
Check pin "1" for 5 VDC.
Check pin "2" for ground.
Check the continuity of wire L943-PK from connector "R-C2" to pin "38" of connector "RC-C1".Expected Result: Pin "1" has 5 VDC, pin "2" is continuous to ground, and wire R732-BR is continuous.Results:OK - All pins check fine. Proceed to Step 3.Not OK - One or more of the pins did not check out correctly.Repair: Inspect the harness for damage. Repair or replace the harness if necessary.
Check Sensor
Park the machine. Turn key start switch to the off position.
Turn the machine disconnect switch to the off position.
Disconnect connector "R-C2" from the hydraulic pressure sensor.
Make sure that the oil level in the hydraulic tank is lower than the port for the pressure sensor. If this action is not performed, hydraulic oil will leak out of the sensor port when the sensor is removed.
Remove the sensor from the fitting.
Inspect the sensor for damage or possibly a clogged pressure port in the end of the sensor.Expected Result: The pressure port is clean, and the sensor has no external damage.Results:OK - The pressure port is clean, and the sensor has no external damage. Proceed to Step 4.Not OK - The sensor