NRS Exhaust Gas Temperature Is High
System Operation Description:
This procedure covers the following event codes:
Show/hide table
| Event Codes for NRS Exhaust Gas Temperature Is High | ||
|---|---|---|
| CDL Code | Code Description | Comments |
| E1092-1 | High EGR Temperature : Level 1 | The exhaust gas temperature in the NRS has reached 178° C (352° F) for 8 seconds. The ECM has been powered for at least 2 seconds. The engine has been running for at least 180 seconds. There are no electrical faults on the circuit. |
| E1092-2 | High EGR Temperature : Level 2 | The exhaust gas temperature in the NRS has reached 180° C (356° F) for 8 seconds. The engine will be derated. The ECM has been powered for at least 2 seconds. The engine has been running for at least 180 seconds. There are no electrical faults on the circuit. |
Show/hide table
 | |
| Illustration 1 | g02671696 |
Components of the NRS cooler (1) Coolant inlet pipe (2) NRS Exhaust inlet pipe (3) NRS cooler (4) NRS Exhaust outlet pipe (5) Coolant outlet pipe | |
Test 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".
- Determine if an associated code is active or logged. Table 2 lists associated diagnostic codes.
Show/hide table
Table 2 Associated Codes CDL Code Description E361-1 High Engine Coolant Temperature : least severe E361-2 High Engine Coolant Temperature : moderate severity E361-3 High Engine Coolant Temperature : most severe
Results:
- There are associated codes. -
Repair: Refer to Troubleshooting, "Diagnostic Trouble Codes" in order to troubleshoot the associated diagnostic code.
STOP
- A E1092 code and a E1319-2 code are present. - Proceed to Test Step 3.
- There are no associated codes. - Proceed to Test Step 2.
Test Step 2. Perform an Air Systems Service Test
Refer to Illustration 1.
- Establish communication between the electronic service tool and the ECM .
- Select "Diagnostics" from the toolbar at top of screen.
- Select "Diagnostic Tests" from the drop-down menu.
- Select "Air Systems Motor Valve Verification Test".
Results:
- The air systems service test did not complete due to a 412-16 code. -
Repair: Perform the following procedure:
- Remove the exhaust inlet (2) and the exhaust outlet (4) from the NRS cooler (3) .
- Inspect the internal passage of the NRS cooler for evidence of coolant.
Note: During the following inspection, some condensation may be present in the NRS cooler. This condition is normal.
- If significant amount of coolant is found, replace the NRS cooler. Refer to Disassembly and Assembly, "Exhaust Cooler (NRS) - Remove and Install".
STOP
- The air systems test completed successfully. - Proceed to Test Step 3.
Test Step 3. Inspect the NRS Cooler
Refer to Illustration 1.
Perform a leak test on the NRS cooler. Refer to Systems Operation, Testing, and Adjusting, "Exhaust Cooler (NRS) - Test".
Results:
- The NRS cooler has internal leakage. -
Repair: Perform the following procedure:
- Replace the NRS cooler. Refer to Disassembly and Assembly, "Exhaust Cooler (NRS) - Remove and Install".
- Use the electronic service tool to clear all related diagnostic trouble codes.
- Run the engine and ensure that the fault has been eliminated.
- If the fault is still present, contact the Technical Communicator at a Cat dealer.
STOP
- The NRS cooler did not have internal leakage. -
Repair: Perform the following procedure:
- Use the electronic service tool to clear all related diagnostic trouble codes.
- Run the engine until the normal operating temperature is reached and ensure that the fault has been eliminated.
- If the fault is still present, contact the Technical Communicator at a Cat dealer.
STOP
Caterpillar Information System:
C7.1 Engines For Caterpillar Built Machines Intake Manifold Air Pressure Is Low
428F, 432F, 434F and 444F Backhoe Loaders Safety Messages
C7.1 Engines For Caterpillar Built Machines Inlet Air Temperature Is High
C7.1 Engines For Caterpillar Built Machines Fuel Temperature Is High
C7.1 Engines For Caterpillar Built Machines Fuel Rail Pressure Problem
C7.1 Engines For Caterpillar Built Machines Fuel Consumption Is Excessive
C7.1 Engines For Caterpillar Built Machines Exhaust Has Excessive White Smoke
C7.1 Engines For Caterpillar Built Machines Exhaust Has Excessive Black Smoke
C7.1 Engines For Caterpillar Built Machines Engine Top Speed Is Not Obtained
C7.1 Engines For Caterpillar Built Machines Engine Shutdown Occurs Intermittently
C7.1 Engines For Caterpillar Built Machines Engine Misfires, Runs Rough or Is Unstable
C7.1 Engines For Caterpillar Built Machines Engine Cranks but Does Not Start
428F, 432F, 434F and 444F Backhoe Loaders Additional Messages
Installing the New 368-4968 Engine Support Gp to Increase the Durability of the Front Housing on Certain PM-200 Cold Planers{1152, 1153, 1154} Installing the New 368-4968 Engine Support Gp to Increase the Durability of the Front Housing on Certain PM-200 Cold Planers{1152, 1153, 1154}
2012/02/06 The Buffers for the Exhaust Temperature Sensors Are Relocated on C175 Engines in 793F, 795F, and 797F Off-Highway Trucks {1408}
Procedure to Install a New Solenoid for the Autolube System on Certain 16M and 24M Motor Graders{7516, 7540} Procedure to Install a New Solenoid for the Autolube System on Certain 16M and 24M Motor Graders{7516, 7540}
PL87 Pipelayer Machine Systems Drawbar - Remove and Install
428F2, 432F2, 434F2 and 444F2 Backhoe Loaders Fuel System Water Separator - Drain
773G and 775G Off-Highway Trucks Specifications
422F, 428F, 432F, 434F and 444F Backhoe Loaders Hydraulic Oil Sample - Obtain
2015/04/07 New VIMSpc Software Is Now Available On Certain Cat Product {0785, 7601}
PL83 and PL87 Pipelayers Machine Systems Refrigerant Accumulator - Remove and Install
PL83 and PL87 Pipelayers Machine Systems Cable - Remove and Install
2011/09/14 A New Oversized Cylinder Bore Liner Seal Insert Is Available for 3500 Engine Cylinder Block Salvage {1201, 7555}