COVER 7V5307 - Caterpillar

Table 1
Diagnostic Trouble Codes for High Intake Manifold Air Temperature
J1939 Code CDL Code Code Description
(code descriptions may vary) Comments
105-15 E539 (1) Engine Intake Manifold #1 Temperature : High - least severe (1) The engine has been running for 3 minutes.
No other 105 (172) codes are active.
168 codes are not active.
Code 412-16 (E1092 (2)) is not active.
The intake manifold air temperature exceeds the value that is programmed into the ECM for 8 seconds. The code is logged.
This code will be reset when the temperature is less than 122° C (252° F) for 4 seconds.
105-16 E539 (2) Engine Intake Manifold #1 Temperature : High - Moderate Severity (2) The engine has been running for 3 minutes.
No other 105 (172) codes are active.
168 codes are not active.
Code 412-16 (E1092 (2)) is not active.
The intake manifold air temperature exceeds the value that is programmed into the ECM for 8 seconds. The engine will be derated. The code is logged.
This code will be reset when the temperature is less than 124° C (255° F) for 20 seconds.
105-0 E539 (3) Engine Intake Manifold #1 Temperature : High - most severe (3) The engine has been running for 3 minutes.
No other 105 (172) codes are active.
168 codes are not active.
Code 412-16 (E1092 (2)) is not active.
The intake manifold air temperature exceeds the value that is programmed into the ECM for 8 seconds. The engine may stop. The code is logged.
This code will be reset when the temperature is less than 124° C (255° F) for 20 seconds. Probable Causes
Coolant level
Air-to-air aftercooler (ATAAC)
Cooling fan
Air inlet and exhaust system
Exhaust Back Pressure Regulator (EBPR)
Ambient temperature
Altitude
Running conditionRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Table 2
Troubleshooting Test Steps Values Results
1. Coolant Level
A. Check that the coolant is filled to the correct level.
Note: If the coolant level is too low, air will get into the cooling system. Air in the cooling system will cause a reduction in coolant flow.
Coolant
Result: The coolant level is low.
Repair: Fill the coolant system to the correct level. Refer to the Operation and Maintenance Manual, "Coolant Level - Check".
Result: The coolant level is OK.
Proceed to Test Step 2.
2. Air-to-Air Aftercooler (ATAAC)
A. Check the ATAAC for debris or damage.
Note: Debris between the fins of the ATAAC core restricts air flow through the core.
ATAAC
Result: The ATAAC has excessive debris or is damaged.
Repair: Clear the debris from the ATAAC or replace the ATAAC.
Result: The ATAAC is OK.
Proceed to Test Step 3.
3. Cooling Fan
A. Check the operation of the cooling fan.
Note: A fan that is not turning at the correct speed can result in insufficient airflow through the aftercooler core.
Cooling fan
Result: The cooling fan is not operating correctly.
Repair: Investigate the cause of the incorrect fan operation
Result: The cooling fan is operating correctly.
Proceed to Test Step 4.
4. Air Intake and Exhaust System
A. Check the air intake and exhaust system for the following defects:
Blockages
Restrictions
Damage to the air intake ducts and hoses
Loose connections and air leaks
Air intake and exhaust
Result: The air intake or exhaust system is