BRACKET 7J2257 - Caterpillar

Use this procedure to troubleshoot a high differential pressure for the air inlet system. Also, use this procedure if one of the following event codes is active or logged.
Table 1
J1939 Code and Description Comments
107-15
Engine Air Filter 1 Differential Pressure : High - least severe (1) The air filter differential pressure is above the trip point pressure for the delay time.
The engine power may be derated.
The code is logged.
2809-15
Engine Air Filter 2 Differential Pressure : High - least severe (1) The air filter differential pressure is above the trip point pressure for the delay time.
The engine power may be derated.
The code is logged. Probable Causes
Codes
Air filter element
Enclosure
Sensor
Connectors and wiringRecommended Actions
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 Damaged or Plugged Air Filter Elements
Note: For optimum operation, replace the air filter elements when the inlet air restriction reaches 2.5 kPa (10 inch of H2O). The maximum allowable inlet air restriction is 3.75 kPa (15 inch of H2O).
Air Filter Element
Result: The air filter element is not plugged and the piping is not restricted.
Proceed to Test Step 3.
Result: The air filter element is plugged or the piping is restricted.
Repair: Clean or replace the air filter element.
If problem is not resolved, proceed to Test Step 3.
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 Damaged or Plugged Air Filter Elements
Note: For optimum operation, replace the air filter elements when the inlet air restriction reaches 2.5 kPa (10 inch of H2O). The maximum allowable inlet air restriction is 3.75 kPa (15 inch of H2O).
Air Filter Element
Result: The air filter element is not plugged and the piping is not restricted.
Proceed to Test Step 3.
Result: The air filter element is plugged or the piping is restricted.
Repair: Clean or replace the air filter element.
If problem is not resolved, proceed to Test Step 3.
3. Check the Enclosure
A. Check that the engine has been installed in an enclosure that is sufficiently ventilated.
Enclosure
Result: The engine enclosure is sufficiently ventilated.
Proceed to Test Step 4.
Result: The engine enclosure is not sufficiently ventilated.
Repair: Repair the ventilation for the enclosure.
If problem is not resolved, proceed to Test Step 4.
3. Check the Enclosure
A. Check that the engine has been installed in an enclosure that is sufficiently ventilated.
Enclosure
Result: The engine enclosure is sufficiently ventilated.
Proceed to Test Step 4.
Result: The engine enclosure is not sufficiently ventilated.
Repair: Repair the ventilation for the enclosure.
If problem is not resolved, proceed to Test Step 4.
4. Check the Inlet Restriction Pressure Sensor
A. Connect Cat ET.
B. Use