Jeep XJ. Manual - part 117

be continuity. If OK, replace the faulty rear wiper
motor. If not OK, repair the open circuit as required.

WASHER SYSTEM

FRONT

The diagnosis found here addresses an inoperative

front washer pump. If the washer pump operates,
but no washer fluid is emitted from the washer noz-
zles, be certain to check the fluid level in the reser-
voir. Check for ice or other foreign material in the
reservoir, and for pinched, disconnected, broken, or
incorrectly routed washer system plumbing. For cir-
cuit descriptions and diagrams, refer to 8W-53 - Wip-
ers in Group 8W - Wiring Diagrams.

WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,

REFER

GROUP

PASSIVE

RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING

WHEEL,

STEERING

COLUMN,

INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.

(1) Turn the ignition switch to the On position.

Turn the wiper switch to the Low or High speed posi-
tion. Check whether the wipers operate. If OK, go to
Step 2. If not OK, see the Wiper System diagnosis in
this group.

(2) Turn the ignition switch to the Off position.

Disconnect and isolate the battery negative cable.
Unplug the front washer pump wire harness connec-
tor. Check for continuity between the ground circuit
cavity of the front washer pump wire harness connec-
tor and a good ground. There should be continuity. If
OK, go to Step 3. If not OK, repair the open circuit to
ground as required.

(3) Connect the battery negative cable. Turn the

ignition switch to the On position. Check for battery
voltage at the front washer switch output circuit cav-
ity of the front washer pump wire harness connector
while actuating the washer switch. If OK, replace the
faulty washer pump. If not OK, go to Step 4.

(4) Turn the ignition switch to the Off position.

Disconnect and isolate the battery negative cable.
Unplug the windshield wiper/washer switch wire
harness connector. Check for continuity between the
front washer switch output circuit cavity of the front
washer pump wire harness connector and a good
ground. There should be no continuity. If OK, go to
Step 5 If not OK, repair the short circuit as required.

(5) Check for continuity between the front washer

switch output circuit cavities of the front washer
pump wire harness connector and the wiper/washer
switch wire harness connector. There should be con-

tinuity. If OK, replace the faulty switch. If not OK,
repair the open circuit as required.

REAR

The diagnosis found here addresses an inoperative

rear washer pump. If the washer pump operates, but
no washer fluid is emitted from the washer nozzle, be
certain to check the fluid level in the reservoir. Check
for ice or other foreign material in the reservoir, and
for pinched, disconnected, broken, or incorrectly
routed washer system plumbing. For circuit descrip-
tions and diagrams, refer to 8W-53 - Wipers in Group
8W - Wiring Diagrams.

WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,

REFER

GROUP

PASSIVE

RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING

WHEEL,

STEERING

COLUMN,

INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.

(1) Turn the ignition switch to the On position.

Place the rear wiper/washer switch in the Wipe posi-
tion. Check whether the rear wiper is operating. If
OK, go to Step 2. If not OK, see the Wiper System
diagnosis in this group.

(2) Turn the ignition switch to the Off position.

Disconnect and isolate the battery negative cable.
Unplug the rear washer pump wire harness connec-
tor. Check for continuity between the ground circuit
cavity of the rear washer pump wire harness connec-
tor and a good ground. There should be continuity. If
OK, go to Step 3. If not OK, repair the open circuit to
ground as required.

(3) Connect the battery negative cable. Turn the

ignition switch to the On position. Check for battery
voltage at the rear washer motor control circuit cav-
ity of the rear washer pump wire harness connector
while the rear washer switch is actuated. If OK,
replace the faulty pump. If not OK, go to Step 4.

(4) Turn the ignition switch to the Off position.

Disconnect and isolate the battery negative cable.
Unplug the rear wiper/washer switch wire harness
connector. Check for continuity between the rear
washer motor control circuit cavity of the rear
washer pump wire harness connector and a good
ground. There should be no continuity. If OK, go to
Step 5. If not OK, repair the short circuit as
required.

(5) Check for continuity between the rear washer

motor control circuit cavities of the rear washer
pump wire harness connector and the rear wiper/
washer switch wire harness connector. There should

8K - 6

WIPER AND WASHER SYSTEMS

DIAGNOSIS AND TESTING (Continued)

be continuity. If OK, replace the faulty switch. If not
OK, repair the open circuit as required.

WIPER SWITCH AND WASHER SWITCH

FRONT

Perform the diagnosis for the front wiper system

and/or washer system as described in this group
before testing the front wiper and washer switch. For
circuit descriptions and diagrams, see 8W-53 - Wip-
ers in Group 8W - Wiring Diagrams.

WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,

REFER

GROUP

PASSIVE

RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING

WHEEL,

STEERING

COLUMN,

INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.

(1) Disconnect and isolate the battery negative

cable.

(2) Remove the front wiper and washer switch

from the steering column and unplug the wire har-
ness connector from the switch.

(3) Using an ohmmeter, perform the switch conti-

nuity checks at the switch terminals as shown in the
Windshield Wiper Switch and Washer Switch Conti-
nuity chart (Fig. 2).

(4) If the switch fails any of the continuity checks,

replace the faulty switch. If the switch is OK, repair

the wiper system and/or washer system wire harness
circuits as required.

REAR

Perform the diagnosis for the rear wiper system

and/or washer system as described in this group
before testing the rear wiper and washer switch. For
circuit descriptions and diagrams, see 8W-53 - Wip-
ers in Group 8W - Wiring Diagrams.

WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS,

REFER

GROUP

PASSIVE

RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING

WHEEL,

STEERING

COLUMN,

INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.

(1) Remove the accessory switch bezel from the

instrument panel and unplug the rear wiper and
washer switch wire harness connector.

(2) Using an ohmmeter, check the rear wiper and

washer switch continuity at the switch terminals as
shown in the Rear Wiper Switch and Washer Switch
Continuity chart (Fig. 3).

(3) If the switch fails any of the continuity checks,

replace the faulty switch. If the switch is OK, repair
the rear wiper system and/or washer system wire
harness circuits as required.

SWITCH POSITION

CONTINUITY BETWEEN

OFF

PIN P2 AND PIN L

LOW

PIN P1 AND PIN L

HIGH

PIN P1 AND PIN H

WASH

PIN P1 AND PIN W

INTERMITTENT

CANNOT BE CHECKED

Fig. 2 Windshield Wiper Switch and Washer Switch

Continuity

SWITCH POSITION

CONTINUITY BETWEEN

OFF

1 AND 4

WIPE

4 AND 5

WASH

2 AND 5, 4 AND 5

ILLUMINATION LAMP

1 AND 3

Fig. 3 Rear Wiper Switch and Washer Switch

Continuity

WIPER AND WASHER SYSTEMS

8K - 7

DIAGNOSIS AND TESTING (Continued)

REMOVAL AND INSTALLATION

WIPER BLADE

FRONT

NOTE: The notched retainer end of the wiper ele-
ment should always be oriented towards the end of
the wiper blade that is nearest to the wiper pivot.

(1) Lift the wiper arm to raise the wiper blade and

element off of the windshield glass.

(2) To remove the wiper blade from the wiper arm,

push the release tab under the arm tip and slide the
blade away from the tip towards the pivot end of the
arm (Fig. 4).

(3) To install the wiper blade on the wiper arm,

slide the blade retainer into the U-shaped formation
on the tip of the wiper arm until the release tab
snaps into its locked position. Be certain that the
notched retainer for the wiper element is oriented
towards the end of the wiper blade that is nearest to
the wiper pivot.

REAR

NOTE: The notched retainer end of the wiper ele-
ment should always be oriented towards the end of
the wiper blade that is nearest to the wiper pivot.

(1) Lift the rear wiper arm to raise the wiper blade

and element off of the rear liftglass.

(2) To remove the wiper blade from the wiper arm,

push the release tab under the arm tip and slide the
blade away from the tip towards the rear wiper
motor output shaft end of the arm (Fig. 4).

(3) To install the wiper blade on the wiper arm,

WIPER ARM

CAUTION: The use of a screwdriver or other prying
tool to remove a wiper arm may distort it. This dis-
tortion could allow the arm to come off of the pivot
shaft, regardless of how carefully it is installed.

FRONT

(1) Lift the wiper arm to permit the latch to be

pulled out to its holding position, then release the
arm (Fig. 5). The arm will remain off the windshield
with the latch in this position.

(2) Remove the arm from the pivot using a rocking

motion.

(3) Install the arm and blade with the wiper motor

in the Park position. See the Front Wiper Arm
Installation illustration (Fig. 6).

(4) Mount the arms on the pivot shafts so that the

distance from the lower edge of the wiper arm tip to
the upper edge of the lower windshield moulding is:

• 23 to 52 mm (0.90 to 2.04 inch) on the driver

side

Fig. 4 Wiper Blade Remove/Install - Typical

1 – RELEASE TAB

Fig. 5 Wiper Arm Remove/Install

1 – LOCKING LATCH
2 – ARM

8K - 8

WIPER AND WASHER SYSTEMS

• 33 to 62 mm (1.29 to 2.44 inch) on the passenger

side.

(5) Lift the wiper arm away from the windshield

slightly to relieve the spring tension on the latch.
Push the latch into the locked position and slowly
release the arm until the wiper blade rests on the
windshield.

(6) Operate the wipers with the windshield glass

wet, then turn the wiper switch to the Off position.
Check for the correct wiper arm positioning and
readjust if required.

REAR

(1) Disconnect the washer nozzle hose and clip

from the external nipple of the rear wiper motor out-
put shaft bezel.

(2) Lift the wiper arm pivot cover and remove the

retaining nut (Fig. 7).

(3) Remove the wiper arm from the motor output

shaft using a rocking motion.

(4) Install the rear wiper arm with the wiper

motor in the Park position. Place the rear wiper
blade on the glass so that it is parallel to the liftgate
glass opening, and install the wiper arm retaining
nut.

(5) Operate the rear wiper with the liftgate glass

wet, then turn the rear wiper switch to the Off posi-
tion so that the blade moves to the Park position.

(6) The measurement from the tip of the blade

should now be from 27 to 35 mm (1.06 to 1.38 inch)
above the upper edge of the lower liftgate glass seal
(Fig. 8). Check for the correct wiper arm positioning
and readjust if required.

(7) Tighten the wiper arm retaining nut to 18 N·m

(160 in. lbs.) and close the pivot cover.

WIPER LINKAGE AND PIVOT

The wiper linkage and pivots can only be removed

from or installed in the vehicle as a unit with the
wiper motor. See Wiper Motor in this group for the
service procedures.

WIPER MOTOR

FRONT

(1) Disconnect and isolate the battery negative

cable.

Fig. 6 Front Wiper Arm Installation

Fig. 7 Rear Wiper Arm Remove/Install

1 – PIVOT COVER
2 – WIPER ARM RETAINING NUT

Fig. 8 Rear Wiper Arm Installation

1 – IN PARKED POSITION —27 TO 35 mm (1.06 TO 1.38 INCH)

ABOVE UPPER EDGE OF LOWER GLASS SEAL AT TIP OF
WIPER BLADE

WIPER AND WASHER SYSTEMS

8K - 9

REMOVAL AND INSTALLATION (Continued)

Content .. 115 116 117 118 ..