Jeep 1996 Grand Cherokee Service Manual - Wiper And Washer Systems
WIPER AND WASHER SYSTEMS
CONTENTS
page
page
GENERAL INFORMATION
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . 1
DESCRIPTION AND OPERATION
BODY CONTROL MODULE . . . . . . . . . . . . . . . . . 3
INTERMITTENT WIPE RELAY . . . . . . . . . . . . . . . 3
REAR WIPER AND WASHER SYSTEM . . . . . . . 1
WASHER NOZZLES AND PLUMBING . . . . . . . . . 4
WASHER PUMPS . . . . . . . . . . . . . . . . . . . . . . . . 4
WASHER RESERVOIR . . . . . . . . . . . . . . . . . . . . 4
WINDSHIELD WASHER SYSTEM . . . . . . . . . . . . 1
WINDSHIELD WIPER SYSTEM . . . . . . . . . . . . . 1
WIPER AND WASHER SWITCHES . . . . . . . . . . . 3
WIPER ARMS AND BLADES . . . . . . . . . . . . . . . 2
WIPER LINKAGE AND PIVOTS . . . . . . . . . . . . . . 2
WIPER MOTORS . . . . . . . . . . . . . . . . . . . . . . . . 2
DIAGNOSIS AND TESTING
INTERMITTENT WIPE RELAY . . . . . . . . . . . . . . . 7
WASHER SYSTEMS . . . . . . . . . . . . . . . . . . . . . . 6
WIPER AND WASHER SWITCHES . . . . . . . . . . . 6
WIPER SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . 4
REMOVAL AND INSTALLATION
INTERMITTENT WIPE RELAY . . . . . . . . . . . . . . 11
WASHER PUMPS AND RESERVOIR . . . . . . . . 13
WIPER AND WASHER SWITCHES . . . . . . . . . . 12
WIPER ARMS . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
WIPER BLADES AND ELEMENTS . . . . . . . . . . . 8
WIPER LINKAGE AND PIVOTS . . . . . . . . . . . . . 11
WIPER MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . 10
GENERAL INFORMATION
INTRODUCTION
Following are general descriptions of the major
components in the wiper and washer systems. Refer
to 8W-53 - Wipers in Group 8W - Wiring Diagrams
for complete circuit descriptions and diagrams.
DESCRIPTION AND OPERATION
WINDSHIELD WIPER SYSTEM
An intermittent wiper system is standard equip-
ment. This system lets the driver select from two
wiper speeds, or an intermittent wipe feature. The
intermittent wipe feature is provided by the Body
Control Module (BCM) and an intermittent wipe
relay.
The intermittent wipe delay times are speed sensi-
tive. Above ten miles-per-hour the delay is adjustable
from about one-half second to about eighteen sec-
onds. Below ten miles-per-hour the BCM doubles the
delay time, or provides delays of about one second to
about thirty-six seconds.
Models equipped with the optional automatic head-
lamp system have a programmable feature in the
BCM that will energize the headlamps automatically
whenever the wipers are turned on. Refer to the
proper Body Diagnostic Procedures Manual for more
information on enabling or disabling this feature.
The wipers will operate only when the ignition
switch is in the Accessory or On positions. A circuit
breaker located in the junction block protects the cir-
cuitry of the wiper system. Refer to the owner’s man-
ual for more information on wiper system controls
and operation.
WINDSHIELD WASHER SYSTEM
A electrically operated windshield washer system is
standard equipment. A reservoir in the engine com-
partment holds the washer fluid, which is pressur-
ized by a pump when the washer (multi-function)
switch is actuated. The washer pump feeds the pres-
surized washer fluid through the washer system
plumbing to the washer nozzles.
Vehicles with the optional Vehicle Information Cen-
ter (VIC) have a low washer fluid warning feature
that will warn the driver when the washer fluid level
needs to be checked. Refer to Group 8E - Instrument
Panel Systems for more information on this feature.
The washers will operate only when the ignition
switch is in the Accessory or On positions. A circuit
breaker located in the junction block protects the cir-
cuitry of the washer system. Refer to the owner’s
manual for more information on washer system con-
trols and operation.
REAR WIPER AND WASHER SYSTEM
A rear wiper and washer system is standard equip-
ment on this model. The rear wiper system provides
the following operating modes:
• Intermittent wipe with a five to eight second
delay between sweeps.
ZJ
WIPER AND WASHER SYSTEMS
8K - 1