2016 JEEP GRAND CHEROKEE wiring

Enhanced Accident Response System Reset
Procedure
In order to reset the Enhanced Accident Response System
functions after an event, the ignition must be changed
from the START or ON/RUN position to the OFF posi-
tion. Carefully check the vehicle for fuel leaks in the
engine compartment and on the ground near the engine
compartment and fuel tank before resetting the system
and starting the engine.
Air Bag Warning Light
The air bags must be ready to inflate for your protectionin a collision. The Occupant Restraint Control-
ler (ORC) monitors the internal circuits and
interconnecting wiring associated with air bag
system electrical components.
The ORC monitors the readiness of the electronic parts of
the air bag system whenever the ignition is placed in the START or ON/RUN position. If the ignition is in the OFF
position or in the ACC position, the air bag system is not
on and the air bags will not inflate.
The ORC contains a backup power supply system that
may deploy the air bags even if the battery loses power or
it becomes disconnected prior to deployment.
The ORC turns on the Air Bag Warning Light in the
instrument panel for approximately four to eight seconds
for a self-check when the ignition is first placed in the
ON/RUN position. After the self-check, the Air Bag
Warning Light will turn off. If the ORC detects a mal-
function in any part of the system, it turns on the Air Bag
Warning Light, either momentarily or continuously. A
single chime will sound to alert you if the light comes on
again after initial startup.
The ORC also includes diagnostics that will illuminate
the instrument panel Air Bag Warning Light if a malfunc-
tion is detected that could affect the air bag system. The
80 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

If the Redundant Air Bag Warning Light comes on
intermittently or remains on while driving have an
authorized dealer service the vehicle immediately.
Maintaining Your Air Bag System
WARNING!
•Modifications to any part of the air bag system
could cause it to fail when you need it. You could
be injured if the air bag system is not there to
protect you. Do not modify the components or
wiring, including adding any kind of badges or
stickers to the steering wheel hub trim cover or the
upper right side of the instrument panel. Do not
modify the front bumper, vehicle body structure, or
add aftermarket side steps or running boards.
• It is dangerous to try to repair any part of the air
bag system yourself. Be sure to tell anyone who
(Continued)
WARNING! (Continued)
works on your vehicle that it has an air bag system.
• Do not attempt to modify any part of your air bag
system. The air bag may inflate accidentally or may
not function properly if modifications are made.
Take your vehicle to an authorized dealer for any
air bag system service. If your seat, including your
trim cover and cushion, needs to be serviced in any
way (including removal or loosening/tightening of
seat attachment bolts), take the vehicle to your
authorized dealer. Only manufacturer approved
seat accessories may be used. If it is necessary to
modify the air bag system for persons with dis-
abilities, contact your authorized dealer.
82 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Lower Front Fascia Removal:
1. Remove the seven quarter turn fasteners.
2. Starting on one side of the vehicle, disengage lowerfascia from the upper fascia. Grasp the portion inside
the wheel well. Pulling it downwards and toward you,
separate the tabs from the slots in the upper fascia.
3. Continue working your way across the vehicle, sepa- rating the remaining tabs from the slots in the upper
fascia.
NOTE: Do not allow the lower fascia to freely hang from
the tabs in the opposite corner as damage to lower and
upper fascia may result.
4. Store the lower fascia in a safe location.
NOTE: It is recommend to also remove the radar sensor
on vehicle equipped to Adaptive Cruise Control (ACC).
This radar sensor is specifically calibrated to your vehicle
and is not interchangeable with other radar sensors. Radar Sensor Removal Procedure (If Equipped With
Adaptive Cruise Control [ACC]):
1. With the lower fascia removed, which provides access
to the sensor and bracket, disconnect the wiring
harness from the sensor.
2. Using a suitable tool, disconnect the wire clip from the bracket.
3. Using a suitable tool, remove the two fasteners that hold the sensor bracket to the bumper beam.
NOTE: It is recommended to scribe location to assist in
reinstallation.
4. Locate the protective connector on the rear of the bumper beam.
496 STARTING AND OPERATING

NOTE:Only models with the Off Road Package are
equipped with the a protective connector. 5. Remove the plug from the protective connector and
install on the sensor.
6. Insert the wiring harness connector into the protective connector.
7. Store sensor and bracket in a safe place.
NOTE: All cruise control functions will be disabled when
the radar sensor is disconnected.
Radar Sensor Installation Procedure (If Equipped With
Adaptive Cruise Control [ACC]):
1. Disconnect the wiring harness connector from the protective connector on the bumper beam.
2. Remove plug from radar sensor and install in protec- tive connector.
3. Using the previously scribed marks, reinstall the radar sensor and bracket using the two fasteners.
Bumper Beam
1 — Inside Bumper Beam
2 — Protective Connector Location
3 — Sensor Bracket Fasteners
4 — Sensor Bracket
5
STARTING AND OPERATING 497

NOTE:Some alignment may be required upon fascia
installation to align sensor with fascia.
4. Install the wiring harness connector into the radar sensor.
NOTE: If you receive a fault, see your authorized dealer
they may need to perform a sensor alignment.
Lower Front Fascia Installation
NOTE: This will only work if you have a helper.
1. Starting at the center of the vehicle, engage a sufficient number of tabs to support the weight of the lower
fascia (typically one or two tabs) into the upper fascia.
2. Working your way outward, engage the tabs into the slots on one side of the vehicle.
3. Return to the center of the vehicle and repeat Step 2 to the opposite side of the vehicle. NOTE:
•It may be necessary to apply additional force to
individual tabs to make sure they are fully engaged.
• Do not use any tools to apply additional force to the
tabs as damage to the upper and lower fascias may
result.
4. Reinstall the seven quarter turn fasteners.
Quadra-Lift — If Equipped
When off-roading, it is recommended that the lowest
useable vehicle height that will clear the current obstacle
or terrain be selected. The vehicle height should then be
raised as required by the changes in terrain.
The Selec-Terrain switch will automatically change the
vehicle to the optimized height based on the Selec-
Terrain switch position. The vehicle height can be
changed from the default height for each Selec-Terrain
498 STARTING AND OPERATING

WARNING!(Continued)
•Towing any trailer will increase your stopping
distance. When towing you should allow for addi-
tional space between your vehicle and the vehicle
in front of you. Failure to do so could result in an
accident.
CAUTION!
If the trailer weighs more than 1,000 lbs (453 kg)
loaded, it should have its own brakes and they
should be of adequate capacity. Failure to do this
could lead to accelerated brake lining wear, higher
brake pedal effort, and longer stopping distances.
• Do not interconnect the hydraulic brake system or
vacuum system of your vehicle with that of the trailer.
This could cause inadequate braking and possible
personal injury. •
An electronically actuated trailer brake controller is
required when towing a trailer with electronically
actuated brakes. When towing a trailer equipped with
a hydraulic surge actuated brake system, an electronic
brake controller is not required.
• Trailer brakes are recommended for trailers over
1,000 lbs (453 kg) and required for trailers in excess of
1,653 lbs (749 kg).Towing Requirements — Trailer Lights And Wiring
Whenever you pull a trailer, regardless of the trailer size,
stoplights and turn signals on the trailer are required for
motoring safety.
The Trailer Tow Package may include a four- and seven-
pin wiring harness. Use a factory approved trailer har-
ness and connector.
NOTE: Do not cut or splice wiring into the vehicles
wiring harness.
586 STARTING AND OPERATING

Front Turn Signal
1. Open the hood.
2. Turn the turn signal bulb one–quarter turn counter-clockwise to remove from housing.
3. Disconnect the electrical connector and replace the bulb.
CAUTION!
Do not touch the new bulb with your fingers. Oil
contamination will severely shorten bulb life. If the
bulb comes in contact with any oily surface, clean the
bulb with rubbing alcohol.
Front Fog Lamps
1. Reach through the cutout in the splash shield anddisconnect the wiring harness from the fog lamp
connector.
2. Firmly grasp the bulb by the two latches and squeeze them together to unlock the bulb from the back of the
front fog lamp housing.
3. Pull the bulb straight out from the keyed opening in the housing.
CAUTION!
•Do not touch the new bulb with your fingers. Oil
contamination will severely shorten bulb life. If
the bulb comes in contact with any oily surface,
clean the bulb with rubbing alcohol.
(Continued)
7
MAINTAINING YOUR VEHICLE 693

CAUTION!(Continued)
•Always use the correct bulb size and type for
replacement. An incorrect bulb size or type may
overheat and cause damage to the lamp, the socket
or the lamp wiring.
4. Align the index tabs of the front fog lamp bulb with the slots in the collar of the bulb opening on the back
of the front fog lamp housing.
5. Insert the bulb into the housing until the index tabs are engaged in the slots of the collar.
6. Firmly and evenly push the bulb straight into the lamp housing until both tabs snap firmly into place and are
fully engaged.
7. Connect the wiring harness to the front fog lamp connector.
Rear Tail, Stop, and Turn Signal Lamps
1. Raise the liftgate.
2. Remove the two push-pins from the tail lamp housing.
3. Grasp the tail lamp and pull firmly rearward todisengage the lamp from the aperture panel.
Tail Lamp Push Pins
694 MAINTAINING YOUR VEHICLE