The special switch for the steering column
switch unit
H5
controls the operation of the rearscreen
wash/wipe.
The stalk unit
H5
is supplied at
pin 3 of connector D from the ignition-operated line (INT/A) of
the relay
R1
protected by the fuse
F14
: both are
contained in the junction unit
B1
.
The supply for the relay
R1
comes
from the direct line of the maxifuse
J/B1
of
B5
,
whilst the coil is supplied by the line (INT/A) .
When operated, the rearscreen wash/wipe
switch for the steering column switch unit
H5
, sends the
control signals, from pins 1 and 2 of connector D, to the device
inside the motor
N16
(pins 1 and 3) which regulates the
operation of the rearscreen wiper.
The motor
N16
is then connected
to earth through pin 2.
The rearscreen wiper unit consists of the
actual geared motor, the end of travel contacts and the control
relay.
When operated, the rearscreen washer switch
sends two signals from pins 8 and 9 of connector A for
H5
which reach the pump for operating the rearscreen washer
N22
directly
(the operation is the reverse of the windscreen washer function
See E3020 WINDSCREEN WASH/WIPE
).