Jeep Liberty KJ. Manual — part 116
TRAILER TOW WIRING
DESCRIPTION
Vehicles equipped with an optional factory-installed
trailer towing package have a rear body wire harness
that includes a trailer tow wiring take out (2) secured
beneath the rear underbody with retainer clips (1 and
3). A molded connector (4) at the end of the take out
is connected to a heavy duty, sealed, 7-pin trailer tow
connector located on a bracket on the trailer hitch
receiver. The rear body harness includes a second
take out with a trailer tow relay connector bank and
the four trailer tow relays that isolate the right turn sig-
nal, left turn signal, and brake lamp circuits of the
vehicle from the electrical system of the trailer. The
fourth relay in the connector bank provides a fused
ignition switch output (run) source of battery voltage to
the trailer tow connector through a trailer tow relay
output circuit.
The package also includes an adapter harness (stored beneath the left rear seat cushion of the vehicle when it is
shipped from the factory) that adapts the 7-pin trailer tow connector to a standard, light-duty, 4-pin trailer tow con-
nector. Refer to the appropriate wiring information.
8L - 122
LAMPS/LIGHTING - EXTERIOR
KJ
TURN SIGNAL CANCEL CAM
DESCRIPTION
The turn signal cancel cam (2) is concealed within the
steering column. The cancel cam consists of a single
lobe that is integral to the lower hub of the clockspring
rotor. The clockspring mechanism provides turn signal
cancellation as well as a constant electrical connection
between the horn switch, driver airbag, speed control
switches, and remote radio switches on the steering
wheel and the instrument panel wire harness on the
steering column. The housing of the clockspring is
secured to the lock housing near the top of the steer-
ing column and remains stationary. The rotor of the
clockspring, including the turn signal cancel cam lobe
rotates with the steering wheel.
The turn signal cancel cam is serviced as a unit with the clockspring and cannot be repaired. If ineffective or dam-
aged, the entire clockspring unit must be replaced. (Refer to 8 - ELECTRICAL/RESTRAINTS/CLOCKSPRING -
REMOVAL).
OPERATION
When the multi-function switch left (lighting) control stalk is moved to a latched turn signal position, a turn signal
cancel actuator is extended from the left inside surface of the switch housing toward the turn signal cancel cam. As
the steering wheel is rotated to complete the turn, the cam lobe will contact the actuator, automatically cancelling
the turn signal event and releasing the latched multi-function switch left control stalk to the neutral position.
KJ
LAMPS/LIGHTING - EXTERIOR
8L - 123
LAMPS/LIGHTING - INTERIOR - ELECTRICAL DIAGNOSTICS
TABLE OF CONTENTS
page
page
LAMPS/LIGHTING - INTERIOR - ELECTRICAL
DIAGNOSTICS
DIAGNOSIS AND TESTING
*FLIP-UP GLASS AJAR CIRCUIT OPEN . . . . . . 126
*FLIP-UP GLASS AJAR CIRCUIT SHORT TO
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
*HOOD AJAR CIRCUIT OPEN – EXPORT
ONLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
*HOOD AJAR CIRCUIT SHORT TO GROUND
. . . . . . . . . . . . . . . . . . . . . . . . . . . 134
*LEFT FRONT DOOR AJAR CIRCUIT OPEN . . 136
*LEFT FRONT DOOR AJAR CIRCUIT SHORT
TO GROUND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
*LEFT REAR DOOR AJAR CIRCUIT OPEN . . . 141
*LEFT REAR DOOR AJAR CIRCUIT SHORT
TO GROUND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
*RIGHT FRONT DOOR AJAR CIRCUIT OPEN . 146
*RIGHT FRONT DOOR AJAR CIRCUIT
. . . . . . . . . . . . . . . . . . . . . . . 149
*RIGHT REAR DOOR AJAR CIRCUIT OPEN . . 151
*RIGHT REAR DOOR AJAR CIRCUIT SHORT
TO GROUND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
*TAILGATE AJAR CIRCUIT OPEN . . . . . . . . . . . 156
*TAILGATE AJAR CIRCUIT SHORT TO
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
*COURTESY LAMPS INOPERATIVE-ALL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
. . . . . . . . . . . . . . . . . . . . . . . . 162
*COURTESY LAMPS STAY ON AT ALL
TIMES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
DIMMING LEVEL SWITCH INPUT CIRCUIT
HIGH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
DIMMING LEVEL SWITCH INPUT CIRCUIT
LOW.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
8L - 124
LAMPS/LIGHTING - INTERIOR - ELECTRICAL DIAGNOSTICS
KJ
LAMPS/LIGHTING - INTERIOR - ELECTRICAL DIAGNOSTICS
DIAGNOSIS AND TESTING
KJ
LAMPS/LIGHTING - INTERIOR - ELECTRICAL DIAGNOSTICS
8L - 125
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