2003 JEEP GRAND CHEROKEE battery location

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Page 393 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (6) Remove both horns and the mounting bracket
from the right extension of the radiator closure
assembly as a unit.
INSTALLATION
(1) Position both horns and the mounting bracket
onto the right extensi

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO ELECTRICAL, RESTRAINTS
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. FAILURE
TO TAKE

Page 395 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual HORN SWITCH
DESCRIPTION
A center-blow, normally open, resistive membrane-
type horn switch is secured in a plastic tray that is
inserted in a pocket sewn on the front of the driver
side airbag retaine

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual SPARK PLUGS
ENGINE PLUG TYPE ELECTRODE GAP
4.0L 6-CYL. RC12ECC 0.89 mm (.035 in.)
4.7L V-8 (Exc. HO) RC12MCC4 1.01 mm (.040 in.)
4.7L V-8 High
Output (HO)RC7PYCB4 1.01 mm (.040 in.)
TORQUE - IGNITION

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual OPERATION
Although cylinder firing order is the same as 4.0L
Jeep engines of previous years, spark plug firing is
not. The 3 coils dual-fire the spark plugs on cylinders
1-6, 2-5 and/or 3-4. When one

Page 408 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual INSTALLATION
(1) Connect engine harness connector to coil by
snapping into position. Move slide tab towards
engine (Fig. 15) for a positive lock.
(2) Position ignition coil rubber boots to all spark
p

Page 411 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual The voltage signal produced by the knock sensor
increases with the amplitude of vibration. The PCM
receives the knock sensor voltage signal as an input.
If the signal rises above a predetermined level

Page 422 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual an input from the auto headlamp light sensor to
determine the ambient light levels. If the BCM
decides that the exterior lighting is turned on in the
daylight, it overrides the selected panel dimmer
s