Rear Wiper and Washer

WIPER OPERATION

Power Supply and Ground
With ignition switch in the ACC or ON position, power is supplied
^ through 10 A fuse [No. 29, located in the fuse block (J/B)]
^ to rear wiper relay terminals 4 and 1.

When the glass hatch switch is CLOSED, power is supplied
^ from rear wiper relay terminal 3
^ to rear wiper amp. terminal 5,
^ to rear washer motor terminal 1 and
^ to rear wiper motor terminal 6.

If the glass hatch switch is OPEN, ground is supplied
^ to rear wiper relay terminal 2
^ from glass hatch switch terminal 1.

Then rear wiper relay is energized and power to the rear wiper amp., washer motor and wiper motor is interrupted.
(If the glass hatch is opened, no function of rear wiper motor will operate.)
If the rear wiper switch is turned to the INT or ON position, when glass hatch is opened, rear wiper relay terminal 2 is also grounded
^ through rear wiper relay terminals 6 and 7
^ from rear wiper switch terminal 8.

(The purpose of this circuit is to prevent an abrupt operation of the rear wiper when the hatch is closed with the ignition switch turned to ON or ACC, and with the rear wiper switch set to INT or ON.)

Ground is supplied
^ to rear wiper amplifier terminal 3
^ through body grounds B11, B22 and D210.
^ to rear wiper switch terminal 3
^ through body grounds M4 and M66.

Rising Up Operation
When the rear wiper switch is turned to the INT or ON position, ground is supplied
^ through terminal 1 of rear wiper switch
^ to rear wiper amp. terminal 1.

Then wiper amp. is energized and power is supplied
^ through rear wiper amp. terminal 4
^ to rear wiper motor terminal 4.

Ground is supplied to rear wiper motor through rear wiper switch.
With power and ground supplied, rear wiper operates and rear wiper arm moves up.
Wiper does not return to resting position until wiper switch is turned to OFF position.

Low Speed Wiper Operation
When the rear wiper switch is placed in the ON position, ground is supplied
^ through terminal 5 of rear wiper switch
^ to rear wiper motor terminal 3.

With power and ground supplied, the wiper motor operates at low speed.

Auto Stop Operation
With rear wiper switch turned OFF, rear wiper motor will continue to operate until wiper arms reach rear wiper stopper.
When wiper arm is not located at rear wiper stopper with wiper switch OFF, ground is provided
^ from terminal 5 of the rear wiper switch
^ to wiper motor terminal 3, in order to continue wiper motor operation at low speed.

Ground is also supplied
^ through terminal 4 of the rear wiper switch
^ to rear wiper amplifier terminal 2
^ through terminal 7 of the rear wiper amplifier
^ to rear wiper motor terminal 7
^ through terminal 8 of the wiper motor, and
^ through body grounds B11, B22 and D210.

When wiper arms reach rear wiper stopper, rear wiper motor terminals 7 and 6 are connected instead of terminals 7 and 8. Rear wiper motor will then stop wiper arms at the PARK position.

Intermittent Operation
The rear wiper motor operates the wiper arms at low speed approximately every 7 seconds. This feature is controlled by the wiper amplifier.

When the wiper switch is placed in the INT position, ground is supplied
^ to wiper amplifier terminal 1
^ from rear wiper switch terminal 1
^ through body grounds M4 and M66.
^ to wiper motor terminal 3
^ through the rear wiper switch terminal 5
^ to rear wiper switch terminal 4
^ through wiper amplifier terminal 2
^ to wiper amplifier terminal 3
^ through body grounds B11, B22 and D210.

The rear wiper motor operates at low speed intermittent.

WASHER OPERATION
With the ignition switch in the ACC or ON position, power is supplied
^ through 10 A fuse (No. 29, located in the fuse block)
^ to rear washer motor terminal 1.

When the rear wiper switch is turned to WASH position, ground is supplied
^ to rear washer motor terminal 2, and
^ to rear wiper amplifier terminal 6
^ from terminal 2 of rear wiper switch
^ through terminal 3 of rear wiper switch, and
^ through body grounds M4 and M66.

With power and ground supplied, the rear washer motor operates.
When the rear wiper switch is turned to WASH position for one second or more, the rear wiper motor operates at low speed for approximately 3 seconds after the rear wiper switch is released. This feature is controlled by the rear wiper amplifier in the same manner as the intermittent operation.