DESCRIPTION:
This code sets when the actual charge air cooler (CAC) temperature is higher than the MCM modeled CAC temperature.

MONITORED PARAMETER:
Charge air cooler outlet temperature sensors.

TYPICAL ENABLING CONDITIONS:
1. Engine speed 1200 to 1950 rpm.
2. Engine torque greater than 1000 N·m (737 lb·ft).
3. Intake manifold temperature less than 100°C (212°F).

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Always enabled

TYPICAL DURATION:
10 seconds

DASH LAMPS:
MIL

ENGINE REACTION:
None

VERIFICATION:
Obtain enabling conditions on a chassis dyno or by driving unloaded vehicle for more than 20 seconds.

POSSIBLE CAUSES:
1. Low vehicle speed with high engine load.
2. External CAC restriction (Such as a plow, winter front or dirt) refer to 14TS – 11 for information on winter front usage and effect on vehicle performance.
3. Internal CAC restriction.

PROBABLE CAUSES:
1. Low vehicle speed with high engine load (steep grade climb).
2. Fan operation.
3. Winter front in high ambient temperatures.