FILTER GP-FUEL 4608463 - Caterpillar

Illustration 4 g02511716
Typical example of the connector for the NRS valve (1) Position sensor 5 Volt supply (2) Position sensor return (4) NRS valve return (6) NRS valve signalTest Step 1. Inspect Electrical Connectors and Wiring
Thoroughly inspect the connectors for the motorized valves. Refer to Troubleshooting, "Electrical Connectors - Inspect".
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the motorized valves.
Check the screw for the ECM connector for the correct torque of 6 N m (53 lb in).Results:
All connectors, pins, and sockets are correctly connected and/or inserted and the harness is free of corrosion, abrasion, and pinch points - Proceed to Test Step 2.
There is a fault in the connectors and/or the harness. - Repair: Repair the connectors or the harness and/or replace the connectors or the harness. Ensure that all of the seals are correctly in place and ensure that the connectors are correctly connected.Use the electronic service tool in order to clear all logged diagnostic codes and then verify that the repair eliminates the fault.STOPTest Step 2. Check for Diagnostic Codes
Turn the keyswitch to the OFF position.
Connect the electronic service tool to the diagnostic connector.
Turn the keyswitch to the ON position.
Monitor the electronic service tool for active diagnostic codes and/or logged diagnostic codes.Results:
An XXXX-5 diagnostic code is active or recently logged for one or more of the motorized valves - Proceed to Test Step 4.
An XXXX-6 diagnostic code is active or recently logged for one or more of the motorized valves - Proceed to Test Step 5.
An XXXX-7 diagnostic code is active or recently logged for one or more of the motorized valves - Proceed to Test Step 3.
No Codes - The fault seems to be resolved.Repair: For intermittent faults, refer to Troubleshooting, "Electrical Connectors - Inspect".STOPTest Step 3. Measure the Sensor Supply Voltage at the Valve Connector
Turn the keyswitch to the OFF position.
Disconnect the suspect valve from the engine harness.
Turn the keyswitch to the ON position.
Measure the voltage at the valve connector from the terminal for the 5 V supply of the position sensor and the sensor common terminal.Results:
The voltage from the terminal for the 5 VDC supply to the sensor common terminal measures 4.84 to 5.16 VDC. - The sensor supply voltage is correct.Repair: Reconnect the suspect valve. If the XXXX-7 code is still active, replace the suspect valve. Refer to Disassembly and Assembly for more information.Use the electronic service tool in order to clear all logged diagnostic codes and then verify that the repair eliminates the fault.STOP
The sensor supply voltage is out of the nominal range. - The fault is in the 5 V supply wire or the ground wire in the engine harness.Repair: Repair the faulty harness or replace the faulty harness.Use the electronic service tool in order to clear all logged diagnostic codes and then verify that the repair eliminates the fault.STOPTest Step 4. Create a Short Circuit at the Valve Connector
Turn the keyswitch to the OFF position.
Disconnect the connector for the suspect valve.
Fabricate