Workshop Manuals Factory service & repair Land Rover
Land Rover LR3/Disco 387 · 412-02B Auxiliary Heating
87 · Heating & A/C

412-02B Auxiliary Heating: Description And Operation

Make
Land Rover
Model
Discovery LR3/Disco 3
Section
Description And Operation
412-02B Auxiliary HeatingDescription And Operation · page 1 of 8
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Auxiliary Heater  

COMPONENT LOCATIONS 

 

 

 

GENERAL 

Auxiliary heating is provided by a Fuel Fired Booster Heater (FFBH), which boosts the temperature of the coolant supplied
to the heater from the engine. Fuel for the FFBH is taken from the vehicle fuel tank, through a fuel line attached to the fuel 
pump module. An auxiliary fuel pump supplies the fuel at low pressure to the FFBH. In the FFBH, the fuel is burned and 
the resultant heat output is used to heat the engine coolant. 
 
Operation of the FFBH is enabled and disabled by the Automatic Temperature Control Module (ATCM). 
 

FFBH 

Published : Apr 22, 2004

Item  Part Number 

Description 

1

 -

Fuel line connection with fuel tank

2

 -

Auxiliary fuel pump

3

 -

Fuel fired booster heater

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