PUMP GP-WATER 0R8218 - Caterpillar

Use this procedure to troubleshoot a high turbocharger turbine inlet temperature or if one of the following event codes is active.
Table 1
J1939 Code and Description CDL Code and Description Comment
1180-0
Engine Turbocharger #1 Turbine Inlet Temperature : High - most severe (3) E246(3)
High Left Turbocharger Turbine Inlet Temperature The engine is shut down.
The code is logged.
1180-15
Engine Turbocharger #1 Turbine Inlet Temperature : High - least severe (1) E246(1)
High Left Turbocharger Turbine Inlet Temperature The engine is derated.
The code is logged.
1180-16
Engine Turbocharger #1 Turbine Inlet Temperature : High - moderate severity (2) E246(2)
High Left Turbocharger Turbine Inlet Temperature The code is logged.
1181-0
Engine Turbocharger #2 Turbine Inlet Temperature : High - most severe (3) E245(3)
High Right Turbocharger Turbine Inlet Temperature The engine is shut down.
The code is logged.
1181-15
Engine Turbocharger #2 Turbine Inlet Temperature : High - least severe (1) E245(1)
High Right Turbocharger Turbine Inlet Temperature The engine is derated.
The code is logged.
1181-16
Engine Turbocharger #2 Turbine Inlet Temperature : High - moderate severity (2) E245(2)
High Right Turbocharger Turbine Inlet Temperature The code is logged. If the engine is shut down due to a high turbocharger turbine inlet temperature, the power to the engine Electronic Control Module (ECM) must be cycled to restart the engine.Probable Causes
Diagnostic codes and event codes
Inlet air temperature is high
Exhaust temperature is high
Air Inlet or Exhaust System Leak
Air Inlet or Exhaust System Restriction
Aftercooler
Fuel injectors
Valve TrainRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in the order of the listed test steps.
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Look for active codes that are associated with the system for the event code.
Codes
Result: An associated code is active.
Repair: Troubleshoot any associated codes before continuing with this test.
Result: A code is active or logged.
Proceed to Test Step 2.
2. Check for High Inlet Air Temperature
A. Refer to Troubleshooting, "Intake Manifold Air Temperature Is High".
A one degree increase in the inlet manifold temperature will increase the exhaust temperature by approximately three degrees.
Inlet air
temperature
Result: The inlet air temperature is OK.
Proceed to test Step 3.
Result: The inlet air temperature is NOT OK.
Determine the cause of the high inlet air temperature and correct the problem.
If the problem is not resolved, proceed to the next step.
3. Check for High Exhaust Temperature
A. Inspect the turbine inlet temperature probes and thermowells on each side of the engine. Ensure that the temperature probes are reading correctly.
B. Refer to Test and Adjust, "Measuring Exhaust Temperature".
C. Install thermocouples or check individual cylinders with an infrared gun. Maintain a steady load and speed during the measurement to ensure an accurate comparison of each cylinder.
Exhaust
temperature
Repair: All cylinders have comparable temperatures.
Proceed to Test Step 4.
Result: One or more of the cylinders deviate significantly from the average temperature on that bank.
Proceed to step 7.
4. Check the Air Inlet System
A. Check the compressor inlet pressure for each turbocharger.
B. Check for restriction or blockage from the compressor discharge back to the engine.
C. Check for air leaks. Inspect all hoses, tubes, bellows, and