Volvo C30 2007 Service And Repair Manual page 513

the cover over the fan motor using 4 screws.
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Fig. 133: Identifying Cable Terminals And Cables
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If necessary adjust the pipe coupling. See: COOLANT PIPE FUEL-POWERED PREHEATER (B5244S4).
Install:
the control module. See: FUEL FIRED BOOSTER HEATER CONTROL UNIT (B5244S4)
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the auxiliary heater acc. to: FUEL FIRED BOOSTER HEATER (B5244S4).
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FINISHING
TESTING THE ENGINE COOLANT HEATER
Carry out a performance test of the engine coolant heater. See: FUEL-POWERED PREHEATER,
CHECKING .
FAN MOTOR FUEL-POWERED PREHEATER (B5254T3, B5254T7)
NOTE: The illustrations in this service information are used for different model years
2012 Volvo C30 T-5
HVAC Climate Units - Removal, Replacement And Installation