wiper blades JEEP CHEROKEE 1994 Service Repair Manual

WINDSHIELD WIPERS
CONTENTS
page page
WIPER CONTROL SWITCH REPLACEMENT . . 15
WIPER SWITCH TESTING................ 19XJ .................................... 1
YJ .................................... 8
XJ
INDEX
page page
Diagnosing Rear Wiper..................... 6
Diagnosing Rear Wiper Washer.............. 6
Diagnosing Windshield Washer (Intermittent)..... 5
Diagnosing Windshield Washer (Non-Intermittent) . 4
Diagnosing Windshield Wipers............... 11
Front Wipers/Washers...................... 1
Intermittent Wiper Module................... 5
Liftgate Wiper............................ 5Liftgate Wiper Switch Replacement............ 6
Rear Wiper/Washer Switch Testing............ 7
Torque Specifications XJ.................... 7
Washer Pump Replacement................. 6
Washer Pump ReplacementÐLeft Hand Drive.... 2
Washer Pump ReplacementÐRight Hand Drive . . 3
Windshield Wiper Motor.................... 2
FRONT WIPERS/WASHERS
GENERAL
Two-speed electric windshield wipers and electric
washers are standard equipment. An optional inter-
mittent wiper system provides a pause between wipe
cycles for use during conditions of very light precipi-
tation.
The windshield wipers can be operated with the
windshield wiper switch only when the ignition
switch is in the ON or ACCESSORY position. A cir-
cuit breaker located in the fuse block protects the cir-
cuitry of the wiper system.
WIPERS
The standard windshield wiper circuit contains
three components; wiper/washer switch, motor, and
front washer pump. Both standard and intermittent
circuits are the same, except that the intermittent
circuit requires a module and delay resistance in the
wiper switch. Both circuits receive battery feed from,
and are protected by a 5.5 amp circuit breaker.
In the standard wiper circuit, the switch connects
the motor directly to battery feed for low and high
speed operation. In the intermittent circuit, the
switch supplies battery feed to the intermittent wiper
module, which then supplies the motor. In the delay
position, the module is connected with the variable
resistor in the wiper switch. The value of the resis-tance is used by the module to charge a capacitor,
which triggers the amount of delay between wipes.
The wiper motor has an arrangement of brushes
providing the two wiper speeds. When the wipers are
turned off, the park switch maintains current to the
motor until the wipers reach the park position on the
windshield.
The park arm in the motor assembly is connected
to the park switch and is driven by the motor. When
the wiper switch is turned off, current flows through
the contact and the module to the motor until the
wipers reach the park position.
CAUTION: The wiper arms and blades must not be
moved manually from side to side or damage may
result.
WASHERS
With the washer switch ON, current flows through
the washer pump to ground. The front washer pump
runs as long as the driver holds the switch ON. On
standard wipers, the washer switch automatically
moves the wiper switch to LO when the washer is
turned on. On intermittent wipers, the wiper module
runs the wiper motor on LO. Turning the switch to
OFF stops the wipers.
If the washer knob is depressed while the wiper
switch is in the OFF position, the wiper control will
operate for approximately 3 wipes and automatically
turn OFF.
JWINDSHIELD WIPERS 8K - 1