Coolant Circulating Route
Fan
Connecting the Coolant Circuit
The heater is connected to the coolant circuit in the coolant feed pipe from the vehicle engine to the heat exchanger.
Notice
• Parts conveying coolant must be routed and fastened in such a way that they pose no temperature risk to
person or material sensitive to temperature from radiation and direct contact.
• Before working on the coolant circuit, disconnect the negative battery cable and wait until all components
have cooled down completely.
• When installing the heater and the water pump, note the direction of flow of the coolant circuit.
• Fill the heater and water hoses with coolant before connecting to the coolant circuit.
• When routing the coolant pipes, observe a sufficient clearance to hot vehicle parts.
• Protect all coolant hoses/coolant pipes from chafing and from extreme temperatures.
• Secure all hose connections with hose clips.
FFH/PTC SYSTEM
REXTON SM - 2004.4
Engine
Water pump
Heater
Blower fan
Heating system
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
10A-9
Heater module
Y220_10A005