System Description
WIPER OPERATION
The rear wiper switch is controlled by a ring built into the combination switch.
There are two wiper switch positions:
+ON (LO speed)
+INT (Intermittent)
With the ignition switch in the ON position, power is supplied
+through 10A fuse (No.
18, located in the fuse block)
+to rear wiper motor terminalj
4, and
+to rear wiper ampli®er terminalj
5.
Low speed wiper operation
Ground is supplied to rear wiper switch terminalj24through body grounds.
When the rear wiper is placed in the ON position, ground is supplied
+through rear wiper switch terminalj
22
+to rear wiper relay terminalj6.
Then ground is supplied
+to rear wiper motor terminalj
1
+through rear wiper ampli®er terminalsj2andj3.
With power and ground supplied, the wiper motor operates.
Auto stop operation
With the rear wiper switch turned OFF, rear wiper motor will continue to operate until wiper arm reaches rear
window base.
When wiper arm is not located at base of rear window with rear wiper switch OFF, ground is supplied
+to rear wiper motor terminalj
1
+through rear wiper ampli®er terminalsj2,j7and
+through rear wiper motor terminalj
3, in order to continue rear wiper motor operation at low speed.
Ground is also supplied
+to rear wiper motor terminalj
2
+through body grounds.
When wiper arm reaches base of rear window, rear wiper motor terminalsj
3andj4are connected instead
of terminalsj
2andj3. Rear wiper motor will then stop wiper arm at the PARK position.
Intermittent operation
The rear wiper motor operates the wiper arm one time at low speed at an interval of approximately 7 sec-
onds.
When the rear wiper switch is placed in the INT position, ground is supplied
+to rear wiper ampli®er terminalj
1
+through rear wiper switch terminalj21.
Then the rear wiper motor operates intermittently in the same manner as the low speed wiper operation.
WASHER OPERATION
With the ignition switch in the ACC or ON position, power is supplied
+through 10A fuse (No.
18, located in the fuse block)
+to rear washer motor terminalj
2.
When the ring is turned WASH position, ground is supplied
+to rear washer motor terminalj
1, and
+to rear wiper ampli®er terminalj
4
+through terminalj23of rear wiper switch.
With power and ground is supplied, the rear washer motor operates.
The rear wiper motor operates when the ring is turned to WASH position for one second or more and for
approximately 3 seconds after the ring is released. This feature is controlled by the rear wiper ampli®er in the
same manner as the low speed wiper operation.
REAR WIPER AND WASHER
EL-145
