Rear Wiper and Washer Operation (page 2 of 2)

The earth path provides a signal to the CCU to supply power from fuse 8 of the passenger compartment fusebox, through the CCU (C429-5) to the rear wiper relay (C124-7) on a yellow and black wire. This energizes the coil of the forward relay which provides an earth from the rear screen wiper motor (C388-1) on a green and red wire to the rear wiper relay (C124-9). The earth path is completed from the relay (C124-4) to an earth header joint (C551-1) on a black wire. A feed is supplied from fuse 30 of the passenger compartment fusebox (C583-4) to the rear wiper relay (C124-2) on a purple and red wire. The feed passes through the contacts of the reverse relay and is connected from the rear wiper relay (C124-6) to the rear screen wiper motor (C388-2) by a green wire. This operates the rear screen wiper motor in the forward direction.

When the rear wiper switch is pressed to the off position, the earth path to the CCU is removed. This removes the supply to the rear wiper relay forward relay coil. The rear wiper will complete its cycle until the CCU senses a signal, from a switch within the motor, that it is at the off screen position.

A feed from fuse 8 in the passenger compartment fusebox passes through the CCU (C429-4) to the rear wiper relay (C124-1) on a yellow and white wire. This energizes the coil of the reverse relay which provides an earth from the rear screen wiper motor (C388-2) on a green wire to the rear wiper relay (C124-6). The earth path is completed from the relay (C124-4) to an earth header joint (C551-1) on a black wire. Simultaneously, a feed is supplied from fuse 30 of the passenger compartment fusebox (C583-4) to the rear wiper relay (C124-2) on a purple and red wire. The feed passes through the contacts of the forward relay and is connected from the rear wiper relay (C124-9) to the rear screen wiper motor (C388-1) by a green and red wire.