System Wiring Harness - BMW 3 Serie Manual De Instrucciones

4 To install the auxiliary heating

system wiring harness

!
Cars with IHKA from production start to
9.98 only.
The blower control must be replaced on cars
with IHKA produced before 9.98 (see ordering
instructions for the part number).
F 46 0009 R
Disconnect plug X671 (1) from the blower control.
F 46 0010 R
Unscrew the Torx screws (1) on the blower control
(2). Remove the blower control (2) and replace it
with the new one.
The blower relay on plug socket X 58 must be
replaced with a connection plug on cars with IHKA
produced before 9.98 (see ordering instructions for
the part number).
F 46 0156 M
Disconnect the blower relay (1) from the plug
socket X 58 and replace it with the connection
plug.
All cars
F 46 0157 M
Remove the control module holder in the electrics
box.
Connect branch A15, red cable, to terminal 30
post X18326 (1).
Branches A16, A17 and A18 are to be left in the
electrics box.
Thread branches A11 to A14 through the passage
grommet into the interior of the car.
Thread branches A1 to A10 through the passage
grommet into the engine compartment.
Fit the control module holder in the electrics box.
F 46 0080 M
If all the slots in the electrics box are
occupied, branches A17 and A18 must be tied
back with cable ties.
Connect the relay (1) to branch A17 and connect
branches A17 and A18 to a free slot in the
electrics box.
Tie back branch A16 on the relay socket of branch
A17 with a cable tie.
!
The 5 A fuse for the blower control in cars
with IHR up to 9.98 must be replaced with a
25 A fuse (see section 16.2 Circuit diagram for
cars with IHR up to 9.98).
F 46 0158 M
Lay branches A9 and A10, blue and brown cables,
along the vehicle wiring harness and the fuel line to
the installation site of the metering pump on the
fuel filter and secure it with cable ties (3).
Thread branches A9 and A10 through the rubber
grommet (2) and connect them to the socket
casing (1) as follows:
Branch A9, blue cable, to slot 1.
Branch A10, brown cable, to slot 2.
F 46 0159 M
Lay branches A1 to A8 to the installation site of the
auxiliary heater below the left headlight.
Connect branch A1, brown cable, to ground post
X165 behind the left headlight.
Connect branches A2 and A3 to the socket casing
(1) as follows:
Branch A2, red cable, to slot 1.
Branch A3, brown cable, to slot 2.
Connect branches A4 to A8 to the socket casing
(2) as follows:
Branch A4, black cable, to slot 1.
Branch A5, yellow cable, to slot 2.
Branch A6, green/white cable, to slot 4.
Branch A7, violet cable, to slot 5.
Branch A8, blue cable, to slot 6.
F 46 0160 M
Lay branches A12 to A14 along the vehicle wiring
harness to the installation site of the radio.
If you are not fitting a time switch, tie back
branch A12 on the wiring harness.
Lay branch A12 through the recess (1) to the
installation site of the time switch.
Cars with IHR to 9.98 only
F 46 0161 M
Cut the yellow/green cable (1) on connection plug
X905 (4) from blower switch S75, slot 3.
Fit the yellow/green cable end (1) of connection
plug X905 (4) coming from blower switch S75, slot
3 with a socket contact and socket casing (2) and
connect it to branch A13.
Fit the yellow/green cable end (1) coming from
blower resistor R11, plug X904, slot 2 with a pin
contact and plug casing (3) and connect it to
branch A14.
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