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Jeep Liberty KJ. Manual - part 111

function switch. When the steering wheel is rotated during a turning maneuver, the turn signal cancel cam lobe
will contact the turn signal cancel actuator. The cancel actuator latches against the cancel cam rotation in the
direction opposite that which is signaled. If the left turn signal detent is selected, the lobe of the cancel cam
will ratchet past the cancel actuator when the steering wheel is rotated to the left, but will unlatch the cancel
actuator as the steering wheel rotates to the right and returns to center, which will cancel the turn signal event
and release the control stalk from the detent so it returns to the neutral Off position. When a turn signal is
activated, the multi-function switch provides a ground output on a right or left turn switch sense circuit to the
combination flasher circuitry within the hazard switch, and the combination flasher flashes the turn signal
lamps.

RIGHT CONTROL STALK

The right (wiper) control stalk of the multi-function switch operates as follows:

•

Continuous Front Wipe Modes - The control knob on the end of the multi-function switch right (wiper) control
stalk is rotated to an intermediate detent that is one detent rearward from the full forward detent to select the
low speed continuous front wiper mode, or to its full forward detent to select the high speed continuous front
wiper mode. The multi-function switch provides a resistor multiplexed output to the Body Control Module
(BCM) on a front wiper switch circuit, and the BCM responds by energizing the wiper on/off relay in the Power
Distribution Center (PDC) for the front low speed continuous wipe mode, or the wiper on/off relay and the
wiper high/low relay in the PDC for the front high speed continuous wipe mode as required.

•

Continuous Rear Wipe Mode - The control ring on the multi-function switch right (wiper) control stalk is
rotated to the most forward detent to select the continuous rear wiper mode. The multi-function switch provides
a battery voltage output to the rear wiper motor on a rear wiper on driver circuit to signal the rear wiper motor
to operate in the continuous wipe mode.

•

Front Washer Mode - The right (wiper) control stalk of the multi-function switch is pulled towards the steering
wheel to momentarily activate the washer pump in the front washer mode. The washer pump will continue to
operate in the front washer mode until the control stalk is released. The multi-function switch provides a
ground output on a washer pump sense circuit, and battery voltage on a washer pump driver circuit to ener-
gize the washer pump in the front washer mode.

•

Front Wiper Mist Mode - The right (wiper) control stalk of the multi-function switch is pushed towards the floor
to momentarily activate the front wiper motor in the mist mode. The front wiper motor will continue to operate
in the mist mode until the control stalk is released. The multi-function switch provides a resistor multiplexed
output to the Body Control Module (BCM) on a front wiper switch circuit, and the BCM responds by energizing
the wiper on/off relay in the Power Distribution Center (PDC) to operate the front wiper motor momentarily at
low speed to provide the front wiper mist mode.

•

Intermittent Front Wipe Mode - The control knob on the end of the multi-function switch right (wiper) control
stalk is rotated to one of five minor intermediate detents to select the desired intermittent front wipe delay
interval. The control knob is rotated rearward to increase the delay, or forward to decrease the delay. The
multi-function switch provides a resistor multiplexed output to the Body Control Module (BCM) on a front wiper
switch circuit, and the BCM responds by energizing the wiper on/off relay in the Power Distribution Center
(PDC) to operate the front wiper motor at the selected delay intervals.

•

Intermittent Rear Wipe Mode - The control ring on the multi-function switch right (wiper) control stalk is
rotated to the center detent to select the intermittent rear wiper mode. The multi-function switch provides a
battery voltage output to the rear wiper motor on a rear wiper intermittent driver circuit to signal the rear wiper
motor to operate in the intermittent wipe mode.

•

Rear Washer Mode - The control ring on the multi-function switch right (wiper) control stalk is rotated to either
the full forward or full rearward momentary positions to activate the washer pump in the rear washer mode.
The washer pump will continue to operate in the rear washer mode until the control ring is released. The
multi-function switch provides a ground output on a washer pump driver circuit, and battery voltage on a
washer pump sense circuit to energize the washer pump in the rear washer mode.

8L - 102

LAMPS/LIGHTING - EXTERIOR

DIAGNOSIS AND TESTING

MULTI-FUNCTION SWITCH

WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental
restraint system before attempting any steering wheel, steering column, airbag, occupant classification sys-
tem, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect
and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge
before performing further diagnosis or service. This is the only sure way to disable the supplemental
restraint system. Failure to take the proper precautions could result in accidental airbag deployment.

1. Remove the multi-function switch (1) from the steering column. (Refer to 8 - ELECTRICAL/LAMPS/LIGHTING -

EXTERIOR/MULTI-FUNCTION SWITCH - REMOVAL).

2. Disconnect the lighting C-1 (2) or wiper C-2 (3) wire harness connector from the back of the multi-function

switch.

3. Using an ohmmeter, perform the continuity and resistance tests at the terminals in the multi-function switch con-

nector as shown in the Multi-Function Switch Tests table.

MULTI-FUNCTION SWITCH TESTS

EXTERIOR LIGHTING FUNCTIONS

SWITCH POSITION

CONNECTOR C-1 PINS

RESISTANCE (OHMS) ±10%

Off

4 and 5

3781

Park Lamps On

4 and 5

911

Headlamp Low Beams On

4 and 5

349

Rear Fog Lamps On

4 and 5

Headlamp High Beams On

8 and 9

0 - 1

Front Fog Lamps On

2 and 4

0 - 1

Optical Horn (Flash-to-Pass) On

7 and 8

0 - 1

Turn Signal Neutral

6 and 8, 8 and 10

Infinite (Open)

Turn Signal Left

6 and 8

0 - 1

Turn Signal Right

8 and 10

0 - 1

INTERIOR LIGHTING FUNCTIONS

LAMPS/LIGHTING - EXTERIOR

8L - 103

MULTI-FUNCTION SWITCH TESTS

SWITCH POSITION

CONNECTOR C-1 PINS

RESISTANCE (OHMS) ±10%

Off (Courtesy Disable)

1 and 4

Dimming 1

1 and 4

200

Dimming 2

1 and 4

557

Dimming 3

1 and 4

914

Dimming 4

1 and 4

1271

Dimming 5

1 and 4

1628

Dimming 6

1 and 4

1985

Parade Mode On

1 and 4

3565

Courtesy On

1 and 4

7885

FRONT WIPER FUNCTIONS

SWITCH POSITION

CONNECTOR C-1 AND C-2

PINS

RESISTANCE (OHMS) ±10%

Front Wiper Off

C-1 Pin 4 and C-2 Pin 4

4587

Delay 1

C-1 Pin 4 and C-2 Pin 4

1267

Delay 2

C-1 Pin 4 and C-2 Pin 4

792

Delay 3

C-1 Pin 4 and C-2 Pin 4

531

Delay 4

C-1 Pin 4 and C-2 Pin 4

369

Delay 5

C-1 Pin 4 and C-2 Pin 4

262

Front Wiper Low

C-1 Pin 4 and C-2 Pin 4

125

Front Wiper High

C-1 Pin 4 and C-2 Pin 4

Front Wiper Mist

C-1 Pin 4 and C-2 Pin 4

125

Front Washer On

C-2 Pins 5 and 7

0 - 1

REAR WIPER FUNCTIONS

SWITCH POSITION

CONNECTOR C-2 PINS

RESISTANCE (OHMS) ±10%

Rear Wiper Off

1 and 5, 2 and 5

Infinite (Open)

Rear Wiper Intermittent

2 and 5

0 - 1

Rear Wiper On

1 and 5

0 - 1

Rear Washer On

2 and 5, 3 and 5

0 - 1

4. If the switch fails any of the tests, replace the ineffective multi-function switch as required.

REMOVAL

8L - 104

LAMPS/LIGHTING - EXTERIOR

1. Disconnect and isolate the battery negative cable.

2. If the vehicle is equipped with the optional tilt steer-

ing column, move the tilt steering column to the
fully lowered position and leave the tilt release
lever in the released (down) position.

3. From below the steering column (6), remove the

two screws (5) that secure the lower column
shroud (4) to the upper shroud (1).

4. Using hand pressure, press inward on both sides

of the upper shroud above the parting line of the
lower shroud to release the snap features that
secure the two shroud halves to each other.

5. Remove both shroud halves from the steering col-

umn.

6. Disconnect the two wire harness connectors (7)

from the back of the multi-function switch housing
(2).

7. Remove the multi-function switch from the steering

column lock housing by carefully rocking the switch
and pulling the switch housing upward far enough
to disengage its alignment posts and locator tabs
from the lock housing.

INSTALLATION

CAUTION: Before attempting to install the multi-function switch, be certain that the left control stalk is in
the neutral turn signal position and the turn signal cancel actuator is in the retracted (neutral) position.

1. Position the multi-function switch (2) to the steering

column (6).

2. Reconnect the two wire harness connectors (7) to

the connector receptacles on the back of the switch
housing.

3. Position the multi-function switch onto the steering

column lock housing. Be certain that the switch
alignment posts and locator tabs are fully seated
on the lock housing.

4. Position the upper (1) and lower shroud halves (4)

onto the steering column.

5. Align the snap features on the lower shroud with

the receptacles in the upper shroud and apply
hand pressure to snap them together.

6. Install and tighten the two screws (5) that secure

the lower shroud to the upper shroud. Tighten the
screws to 2 N·m (20 in. lbs.).

7. If the vehicle is equipped with the optional tilt steer-

ing column, move the tilt steering column back to

LAMPS/LIGHTING - EXTERIOR

8L - 105

Content .. 109 110 111 112 ..