SHIM PACK 5M7307 - Caterpillar

Engine: C7 (S/N: C7S1-UP) C9 (S/N: MFF1-UP; C9S1-UP) C13 (S/N: LEE1-UP) C15 (S/N: SDP1-UP; B5R1-UP)Introduction
There have been complaints that the engine cooling fan is cycling intermittently. The solution below gives the conditions for the activation and deactivation of the engine cooling fan. Also, a comparison is made in order to establish that the fan is cycling properly.Problem
There have been several complaints from the field that the engine cooling fan is cycling intermittently.Solution
Use the following lists of conditions in order to establish the cause of the cycling of the engine cooling fan.The Engine Control Module (ECM) will turn the cooling fan ON under any of the following conditions if engine rpm is less than 2,250 revolutions per minute:
The engine is not running.
The engine is cranking.
The temperature of the engine coolant is greater than 102° C (216° F).
There is an active diagnostic for the coolant temperature sensor.
The temperature of the intake manifold air is greater than 87° C (189° F).
The temperature of the intake manifold air is greater than 72° C (162° F) and boost pressure is greater than 70 kPa (10 psi).
There is a