OPERATOR'S MANUAL MAINTENANCE

Section C - Electrics
Basic System Operation
Wiper
C-48 C-48
9803/9880-3
Wiper
Operation
C027300GB-2
Fig 49.
The wiper has three modes of operation, intermittent,
permanently on and off. Timing for the intermittent function
is performed by ECU1, and can be varied via the set menu
on the EMS.
When the wiper switch on the Facia Switch Panel (FSP) is
pressed once o/p 12 (C-17) on ECU1 is pulsed for 0.5
seconds to start the wiper stroke. A hold on contact within
the motor assembly retains power for the return stroke of
the blade. A time delay of variable seconds is activated
before the output is energised again, thus giving
intermittent operation.
A second press of the switch enables the wiper to operate
continuously and the output is permanently energised.
A third press of the switch disables wiper operation.