The electronic device inside the steering column switch unit
H5 and the controls on the right lever are supplied at pin 11 of
connector A by the line 'controlled by the ignition' (INT/A) of
relay T12 protected by fuse F43, both housed in the underdashboard
control unit B2.
The electronic section of the steering column
switch unit
H5 which manages the rearscreen wiper function is
supplied at pin 12 of connector C from the same line 'controlled
by the ignition' (INT/A) for the relay T12 protected by the fuse
F52, housed in the underdashboard junction unit B2.
Pin 7 of connector A and pin 9 of connector
C of
H5 are earthed.
When the rearscreen wiper function is switched
on, the steering column switch unit
H5 sends the control signal
to the rearscreen wiper motor N16 from pin 1 of connector B;
pin 2,
on the other hand, receives the earth signal coming from the motor
end of travel cam which stops operation. The motor
N16
is
then earthed.
The windscreen/rearscreen washer switch,
when operated, sends two signals from pins 10 and 12 of connector
A which operate the windscreen/rearscreen washer pump
N22
directly.
Pin 3 of connector A receives the automatic
rearscreen wiper activation signal coming from the Body Computer
M1
,
pin 1 of connector A
See E2022 REVERSING LIGHTS
.