A conventional cross-flow aluminum core radiator (4) is used to cool the engine. The Coolant Recovery Reservoir
(1) is equipped with a Coolant Level Sensor. The Coolant Level Sensor in the Coolant Recovery Reservoir notifies
the driver if there is insufficient coolant in the system by illuminating the low engine coolant warning lamp in the
Instrument Cluster. An Electric Cooling Fan (2) is activated by the Radiator Fan Control Module. The cooling system
is also equipped with an additional electric Coolant Circulation Pump. The pump is used to keep the passenger
cabin warm by circulating coolant through the heater core when the engine is off.

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COOLING - SERVICE INFORMATION

On vehicles equipped with a Supercharger, there are additional cooling system components. The Charge Air Cooler,
Charge Air Cooler Radiator, Charge Air Cooler Circulation Pump, and all related hoses are also part of the cooling
system. The Charge Air Cooler Radiator is a conventional cross-flow aluminum core radiator. The Charge Air Cooler
Radiator mounts in front of the A/C Condenser, and behind the front fascia. The Charge Air Cooler Circulation Pump
is mounted to the side of the Charge Air Cooler Radiator. The pump is used to circulate coolant between the Charge
Air Cooler and the Charge Air Cooler Radiator. It operates independently from the engine cooling system. The only
common link is the Coolant Recovery Reservoir. Both systems use the Coolant Recovery Reservoir as their source
of coolant.

OPERATION

CAUTION: The cooling system is designed to function with a 50/50 mixture of Mopar

Antifreeze/Coolant, 5

Year/100,000 Mile Formula (MS-9769) or equivalent, and distilled water. Higher concentrations may result in
poor cooling performance and premature water pump seal failure. This antifreeze/coolant may not be mixed
or substituted with any other type.

COOLING - SERVICE INFORMATION

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•

When engine is cold: Thermostat (6) is closed, cooling system has no flow through the radiator (7). The cool-
ant flows through the engine, heater core (3), coolant recovery reservoir (1) and an internal engine by-pass.

•

When engine (2) is warm: Thermostat (6) is open, coolant flows through the radiator (7), heater core (3), cool-
ant recovery reservoir (1) and by-pass.

The cooling systems primary purpose is to maintain engine temperature in a range that will provide satisfactory
engine performance and emission levels under all expected driving conditions. It also provides hot coolant for
heater, and cooling for automatic transmission fluid. It does this by transferring heat from engine metal to coolant,
moving this heated coolant to the radiator, and then transferring this heat to the ambient air. The cooling system is
also equipped with an additional electric coolant circulation pump. The pump is used to keep the passenger cabin
warm by circulating coolant through the heater core when the engine is off.

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COOLING - SERVICE INFORMATION

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