Intake Manifold Air Temperature Is High
This procedure covers the following diagnostic codes:
Show/hide table
| Diagnostic Trouble Codes | |||
|---|---|---|---|
| J1939 Code | CDL Code | Code Description
(code descriptions may vary) |
Comments |
| 1636-15 | E539(1) | Engine Intake Manifold #1 Air Temperature : High - least severe (1) | The Electronic Control Module (ECM) detects a problem with the engine intake manifold air temperature. The event code will be logged. There are no performance effects. |
| 1636-16 | E539(2) | Engine Intake Manifold #1 Air Temperature : High - moderate severity (2) | The Electronic Control Module (ECM) detects a problem with the engine intake manifold air temperature. The event code will be logged. The engine power will be derated. |
Intake manifold air temperature can be high for the following reasons:
- High ambient air temperature
- High inlet air restriction and/or high altitude
- Restriction in the exhaust system
- Faulty inlet air temperature sensor and/or circuit
Show/hide table
| Troubleshooting Test Steps | Values | Results |
1. Check for High Ambient Air Temperature A. Determine if the ambient air temperature is within the design specifications for the inlet air system. Note: When ambient temperatures are too high for the rating of the inlet air system, there is not enough of a temperature difference between the ambient air and inlet air temperatures. |
Ambient air temperature |
Results: The ambient air temperature is too high. Repair: Determine the cause of the high inlet air temperature. Correct the situation, when possible. Results: The ambient air temperature is OK. Proceed to Test Step 2. |
2. Check for High Inlet Air Restriction and/or High Altitude Operation Note: When inlet air pressure is low, the turbocharger works harder in order to achieve the desired inlet manifold pressure. This increases inlet air temperature. A. Check for plugged air filters. Check for obstructions to the air inlet. A restriction of the air that enters the engine can cause high cylinder temperatures. High cylinder temperatures cause higher than normal temperatures in the cooling system. B. Consider high altitude operation. The cooling capability of the cooling system is reduced at higher altitudes. |
High Inlet Air Restriction and/or High Altitude Operation |
Results: The air filter is plugged. There is a restriction in the air inlet. Repair: Replace the air filters and/or remove the obstruction from the air inlet. Results: The engine is operating at high altitude. Repair: A pressurized cooling system that has been designed for the higher altitudes must be used. Ensure that the engine is configured for high altitude operation. Results: The air inlet is OK. The engine is not operating at high altitude. Proceed to Test Step 3. |
3. Check for Exhaust System Restriction A. Check for a restriction in the exhaust system. Note: A restriction of the air that is coming out of the engine can cause high cylinder temperatures. |
Exhaust system restriction |
Results: The exhaust system is restricted. Repair: Rectify the cause of the restriction. Results: The exhaust system is OK. Repair: Contact the Dealer Solutions Network (DSN) |
Caterpillar Information System:
C7 and C9 Industrial Engines Fuel Pressure Is Low
G3606 and G3608 Engines Turbocharger - Remove
C7 and C9 Industrial Engines Fuel Pressure Is High
C7 and C9 Industrial Engines Coolant Temperature Is High
C7 and C9 Industrial Engines Configuration Parameters
C7 and C9 Industrial Engines Component Location
C9.3 Marine Engine Heat Exchanger - Remove and Install
PM820, PM822, and PM825 Cold Planer Track Tension - Check/Adjust
G3606 and G3608 Engines Aftercooler - Assemble
C9.3 Marine Engine Electric Starting Motor - Remove and Install - 12V Electric
C2.2 Engines For Caterpillar Built Machines Sensor Supply - Test
C9.3 Marine Engine Electric Starting Motor - Remove and Install - Dual Start - 24V Electric and Air Start
3500B Engines for Caterpillar Built Power Modules Alternator Mounting
3512E Engines for Well Stimulation Pumps Exhaust Elbow
3512C and 3516C Industrial Engines Jacket Water Heater Mount
New Bellow Assemblies Are Used on Certain 3612 and C280-12 Marine and Petroleum Engines {1059, 1061} New Bellow Assemblies Are Used on Certain 3612 and C280-12 Marine and Petroleum Engines {1059, 1061}
C9.3 Marine Engine Air Starting Motor - Remove and Install
Visual Inspection of Liner Seats for 3400, C15, C16, and C18 Series Engines{1200} Visual Inspection of Liner Seats for 3400, C15, C16, and C18 Series Engines{1200}
C3.3B and C3.8 Engines for Caterpillar Built Machines Diesel Particulate Filter Regeneration Does Not Occur
PM3516 Power Modules Fire Prevention and Explosion Prevention
352F OEM Excavator Based Specialty Solutions Before Operation
3512C and 3516C Industrial Engines Electronic Control Module
3512C and 3516C Industrial Engines Electronic Control Module
3512C and 3516C Industrial Engines Radiator