INSERT EXHAUST 5S7221 - Caterpillar

Use this procedure in order to troubleshoot high intake manifold air temperature. Also, use this procedure if one of the following event codes is active.
Table 1
Event Code
J1939 Code and Description Conditions which Generate this Code System Response
105-15 Engine Intake Manifold #1 Temperature : High - least severe (1) The intake manifold air temperature is above the trip point for the programmed delay time. The code is logged.
The ECM may derate the engine or shutdown the engine.
105-16 Engine Intake Manifold #1 Temperature : High - moderate severity (2)
105-0 Engine Intake Manifold #1 Temperature : High - most severe (3) Probable Causes
High coolant temperature
High ambient air temperature
Air inlet restriction
Exhaust restriction
Altitude
Engine OverloadRecommended 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 Step Value Result
1. Active Codes and Logged Codes
A. Establish communication between Caterpillar Electronic Technician (ET) and the Electronic Control Module (ECM).
B. Monitor the diagnostic codes on Cat ET. Check for active or logged diagnostic codes. Specifically check for codes that could be associated to high intake manifold temperature. Refer to the histogram information for engine derates in Cat ET.
Note: Wait at least 30 seconds in order for diagnostic codes to become active.
C. If the histograms contain derates and no diagnostic codes are present, then the engine is operating normally.
Codes
Result: A diagnostic code is present.
Repair: Troubleshoot any codes before continuing with this procedure.
Verify that the repair eliminated the problem.
Reset the histogram.
Result: A diagnostic code is not present.
Proceed to Test Step 2.
2. High Coolant Temperature
A. Check for a high coolant temperature for the engine.
Refer to Troubleshooting, "Coolant Temperature Is High".
Temperature
Result: The coolant temperature is