Jeep 1996 Grand Cherokee Service Manual - page 369
(2) Resistance between terminals 85 and 86 (elec-
tromagnet) should be 75
65 ohms. If OK, go to Step
3. If not OK, replace the faulty relay.
(3) Connect a battery to terminals 85 and 86.
There should now be continuity between terminals
30 and 87, and no continuity between terminals 87A
and 30. If OK, see the Relay Circuit Test in this
group. If not OK, replace the faulty relay.
RELAY CIRCUIT TESTS
(1) The relay common feed terminal cavity (30) is
connected to the wiper (multi-function) switch. There
should be continuity between the cavity for relay ter-
minal 30 and the two fused ignition switch output
(V6) circuit cavities of the multi-function switch con-
nector at all times. If OK, go to Step 2. If not OK,
repair the open circuit(s) to the multi-function switch
as required.
(2) The relay normally closed terminal (87A) is
connected to terminal 30 in the de-energized position.
There should be continuity between the cavity for
relay terminal 87A and the wiper park switch sense
circuit cavities of the wiper motor and the white
24-way body control module connectors at all times.
If OK, go to Step 3. If not OK, repair the open cir-
cuit(s) to the wiper motor and body control module as
required.
(3) The relay normally open terminal (87) is con-
nected to the common feed terminal (30) in the ener-
gized position. There should be battery voltage at the
cavity for relay terminal 87 with the ignition switch
in the On or Accessory positions. If OK, go to Step 4.
If not OK, repair the open circuit to the ignition
switch as required.
(4) The coil battery terminal (86) is connected to
the electromagnet in the relay. There should be bat-
tery voltage at the cavity for relay terminal 86 with
the ignition switch in the On or Accessory positions.
If OK, go to Step 5. If not OK, repair the open circuit
to the ignition switch as required.
(5) The coil ground terminal (85) is connected to
the electromagnet in the relay. It is grounded by the
Body Control Module (BCM) to energize the relay
and cycle the wiper motor. Check for continuity to
the intermittent wiper relay control circuit cavity of
the white 24-way BCM connector. There should be
continuity. If OK, refer to the proper Body Diagnostic
Procedures Manual for diagnosis of the BCM. If not
OK, repair the open circuit to the BCM as required.
REMOVAL AND INSTALLATION
WIPER BLADES AND ELEMENTS
FRONT
Note that the pinch-release for the wiper element
should always be oriented towards the end of the
wiper blade that is nearest to the wiper pivot. To
remove the wiper blade and/or element, proceed as
follows:
(1) Turn the wiper/washer switch to the On posi-
tion. By turning the ignition switch to the On and
Off positions, cycle the wiper blades to a convenient
working location on the windshield.
(2) Lift the wiper arm to raise the wiper blade and
element off of the windshield glass.
(3) Remove the wiper blade from the wiper arm, or
the wiper element from the wiper blade as follows:
(a) 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. 3).
(b) To remove the wiper element from the wiper
blade, pinch the notched (pivot) end of the wiper
element tightly between the thumb and forefinger
(Fig. 4). Then, pull the element firmly towards the
wiper pivot to release the wiper blade claw from
the wiper element retaining pocket. Once the claw
is released from the pocket, the element will slide
easily out of the remaining claws.
(4) Install the wiper blade on the wiper arm, or
the wiper element in the wiper blade as follows:
Intermittent Wipe Relay
Fig. 3 Front or Rear Wiper Blade Remove/Install -
Typical
8K - 8
WIPER AND WASHER SYSTEMS
ZJ
DIAGNOSIS AND TESTING (Continued)