SOFTWARE GP- 1348561 - Caterpillar

Table 1
Diagnostic Trouble Code for NRS Mass Flow Rate Problem    
CDL Code    Code Description    Comments    
E1319-2     EGR Mass Flow Rate Not Responding     Actual mass flow through the NOx Reduction System (NRS) does not match the desired mass flow.
The Electronic Control Module (ECM) has been powered for at least 2 seconds.
The engine is running.
There are no active codes for the 5 VDC supply.
There are no active 526, 1785, 1797, 3385, 3387, 3405, or 3407 codes.
3386-3 or 3386-4 codes are not active.
E1262-2 code is not active.    
Illustration 1 g02160656
(1) Manifold for the NRS pressure sensors (2) NRS differential pressure sensor (3) NRS inlet pressure sensor (4) Pipe for the NRS inlet pressure sensor (5) Pipe for the NRS differential pressure sensor (6) NRS inlet temperature sensor (7) NRS mixerTest Step 1. Check for Associated Diagnostic Trouble Codes
Establish communication between the electronic service tool and the ECM. If necessary, refer to Troubleshooting, "Electronic Service Tools".
Check for diagnostic trouble codes that are associated with the NRS valve or the inlet throttle valve. Troubleshoot NRS valve and inlet throttle valve faults before continuing with this procedure.
Determine if associated code E1154-1 is active or logged. If code E1154-1 is active or recently logged, troubleshoot that code before continuing with this procedure.Results:
Diagnostic code E1154-1 is active or logged. - Repair: Refer to Troubleshooting, "Diagnostic Trouble Codes" in order to troubleshoot the associated diagnostic code.STOP
There are no associated codes. - Proceed to Test Step 3.Test Step 2. Inspect the Electrical Connectors and the Harness
Turn the keyswitch to the OFF position.
Inspect the connectors for the components in the NRS system. Refer to Troubleshooting, "Electrical Connectors - Inspect".
Perform a 45 N (10 lb) pull test on each of the wires in any suspect connector and the connections at the ECM.
Check that the ground connection on the ECM and the negative terminal on the battery are correctly installed.
Check the ground connection on the ECM for abrasions and pinch points.
Check the screws for the ECM connector for the correct torque of 6 N m (53 lb in).
Check the harness for abrasion and pinch points from the NRS components to the ECM.
Check that any suspect connector is installed correctly.Expected Result:The electrical connectors and the cables are correctly installed.Results:
The harness is OK. - Proceed to Test Step 3.
Not OK - Repair: Repair the faulty connectors or the harness and/or replace the faulty connectors or the harness. Ensure that all of the seals are correctly in place and ensure that the connectors are correctly coupled.Use the electronic service tool in order to clear all logged diagnostic codes and then verify that the repair has eliminated the fault.STOPTest Step 3. Check the Air Inlet and Exhaust System
Check