Removing and installing amplifier R12 — VW

Removing and installing
amplifier
R12
Note
When dealing with complaints, it is absolutely necessary to understand the functions and the operation.
For additional information refer to
Operating manual
,
Current flow diagrams, Electrical fault finding and Fitting locations
.
Use
Vehicle diagnostic tester
for repairs and troubleshooting.
After the battery has been connected, check the operation of electrical equipment (clock, convenience electronics and so on) according to the workshop manual
Electrical system
Rep. gr.
27
Battery; Disconnecting and connecting battery
and/or to the
Operating manual
.
Removing module carrier
Anchor
Connector pin assignment
Anchor
Reading measured values
Anchor
Amplifier
R12
view
Amplifier
R12
1
serves to extend sound of
radio/RNS
RX1
.
Amplifier
R12
1
is designed in 10-channel technology.
The signal inputs
2
on the
amplifier
R12
1
are activated by the loudspeaker outputs of the
radio/RNS
RX1
.
Amplifier
R12
1
is installed under left front seat.
Removing
Switch off ignition and all electrical loads, and pull out ignition key.
Move left front seat as far back and as far up as possible.
Release cover
1
at rear on left and right in direction of arrow
A
.
Pull off cover
1
straight towards front in direction of arrow
B
.
Unscrew bolts
arrows
on
amplifier
R12
2
.
Pull out
amplifier
R12
2
until you can access connector
3
.
Release and disconnect connector
3
from
amplifier
R12
2
.
Remove
amplifier
R12
2
completely.
Installing
Note
Make sure that
amplifier
R12
1
is correctly pushed into fold
2
on module carrier when installing it.
Remainder of installation is carried out in reverse order of removal.
Tighten threaded connections to specified torque.
Note
When installing the cover, ensure that it is properly fitted on the front edge of the module carrier.
Engage the cover on the tabs on left and right.
Specified torques
Component
Specified torque
Securing bolt for amplifier
6 Nm
Removing module carrier for
amplifier
R12
Unscrew bolts
1
from centre tunnel and bolts
2
(6 Nm) from bracket.
Remove module carrier
5
.
Unscrew nuts
3
from bracket.
Remove bracket
4
.
Installing module carrier for
amplifier
R12
Installation is carried out in reverse order of removal.
Specified torques
Component
Specified torque
Bolts
1
on centre tunnel
1.2 Nm
Bolts
2
on bracket
6.0 Nm
Nuts
3
on bracket
6.0 Nm
Connector pin assignment,
amplifier
R12
Multi-pin connector, 38-pin
Multi-pin connector, 38-pin
Terminal 31
Terminal 30
Front right bass loudspeaker
R23
, negative
Subwoofer in rear shelf
R157
2, negative
Subwoofer in rear shelf
R157
1, positive
Front left bass loudspeaker
R21
, negative
Front right treble loudspeaker
R22
, negative
Front left treble loudspeaker
R20
, positive
Rear left bass loudspeaker
R15
, positive
Rear right bass loudspeaker
R17
, negative
Not assigned
Not assigned
Not assigned
Not assigned
Front right bass loudspeaker
R23
, positive
Subwoofer in rear shelf
R157
2, positive
Subwoofer in rear shelf
R157
1, negative
Front left bass loudspeaker
R21
, positive
Front right treble loudspeaker
R22
, positive
Front left treble loudspeaker
R20
, negative
Rear left bass loudspeaker
R15
, negative
Rear right bass loudspeaker
R17
, positive
CAN bus (low)
Not assigned
Not assigned
Not assigned
Rear left signal input, negative
Rear right signal input, negative
Front left signal input, negative
Front right signal input, negative
CAN bus (high)
Not assigned
Not assigned
Not assigned
Rear left signal input, positive
Rear right signal input, positive
Front left signal input, positive
Front right signal input, positive
Reading
amplifier
R12
measured values
Special tools and workshop equipment required
Vehicle diagnostic tester
Measured values sound system
Vehicle diagnostic tester
,
Guided Functions