Chrysler 2005 Crossfire SRT6 Service Manual page 4196

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The mode control on the A/C Heater Control Panel is
used to direct the conditioned air to the selected sys-
tem outlets. The mode control switches directs engine
vacuum to control the mode doors, which are oper-
ated by vacuum actuators. The mode control switches
electrical current to control the mode doors, which are
operated by actuators.
• Mode Control (1)
• Passenger Temperature Control (2)
• Air Conditioning Button (3)
• REST Button (4)
• Driver's Temperature Control (5)
• Fan Control (6)
• Rear Defogger Button (7)
HEATER SYSTEM
The Water Pump (7) pumps coolant through the engine (3). There the coolant absorbs heat from the engine (3),
heating up the coolant. Then the heated coolant flows through into the Heater Core (4) where the heat is transferred
to the air in the passenger compartment. The coolant flowing through the Heater Core (4) is controlled by a Coolant
Circulation Valve (6) located in the coolant return. The coolant can be controlled separately for the left and right
sides.
The coolant returns to the Water Pump (7) via the coolant return hose. A Coolant Circulation Pump (5) is installed
between the Coolant Circulation Valve (6) and the Water Pump (7). The Coolant Circulation Pump (5) serves for
maintaining a uniform flow of heating water through the Heater Core (4) even at low engine speeds and in the
Residual Engine Heat Utilization (REST) mode. The major portion of the coolant flows from the engine (3) to the
Thermostat (2) instead of flowing through the Heater Core (4). The Thermostat (2) routes the water through the
radiator (8) or directly to the Water Pump (7) depending on the temperature.
HEATING & AIR CONDITIONING - SERVICE INFORMATION 24 - 67