2014 CADILLAC CTS wiring

Black plate (34,1)Cadillac CTS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081492) - 2014 - CRC 2nd Edition - 11/18/13
3-34 Seats and Restraints
garnish trim, overhead console,
front sensors, side impact sensors,
or airbag wiring.
Your dealer and the service manual
have information about the location
of the airbag sensors, sensing and
diagnostic module, and airbag
wiring.
In addition, the vehicle has a
passenger sensing system for the
front outboard passenger position,
which includes sensors that are part
of the passenger seat. The
passenger sensing system may not
operate properly if the original seat
trim is replaced with non-GM
covers, upholstery, or trim; or with
GM covers, upholstery, or trim
designed for a different vehicle. Any
object, such as an aftermarket seat
heater or a comfort-enhancing pad
or device, installed under or on top
of the seat fabric, could also
interfere with the operation of the
passenger sensing system. This
could either prevent proper
deployment of the passenger
airbag(s) or prevent the passengersensing system from properly
turning off the passenger airbag(s).
See
Passenger Sensing System on
page 3-28.
If the vehicle has rollover roof-rail
airbags, see Different Size Tires
and Wheels on page 10-59 for
additional important information.
If you have to modify your vehicle
because you have a disability and
you have questions about whether
the modifications will affect the
vehicle's airbag system, or if you
have questions about whether the
airbag system will be affected if the
vehicle is modified for any other
reason, call Customer Assistance.
See Customer Assistance Offices
on page 13-3.
Airbag System Check
The airbag system does not need
regularly scheduled maintenance or
replacement. Make sure the airbag
readiness light is working. See
Airbag Readiness Light on
page 5-17.
{Caution
If an airbag covering is damaged,
opened, or broken, the airbag
may not work properly. Do not
open or break the airbag
coverings. If there are any
opened or broken airbag
coverings, have the airbag
covering and/or airbag module
replaced. For the location of the
airbags, see Where Are the
Airbags? on page 3-24. See your
dealer for service.
Replacing Airbag System
Parts after a Crash
{Warning
A crash can damage the airbag
systems in the vehicle.
A damaged airbag system may
not work properly and may not
(Continued)

Black plate (17,1)Cadillac CTS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081492) - 2014 - CRC 2nd Edition - 11/18/13
Instruments and Controls 5-17
This gauge measures the
temperature of the vehicle's engine.
While driving under normal
operating conditions, if the needle
moves into the red area, the engine
is too hot. Pull off the road, stop the
vehicle, and turn off the engine as
soon as possible.
Safety Belt Reminders
Driver Safety Belt Reminder
Light
There is a driver safety belt
reminder light on the instrument
cluster.
When the vehicle is started, this
light flashes and a chime may come
on to remind the driver to fasten
their safety belt. Then the light stayson solid until the belt is buckled.
This cycle may continue several
times if the driver remains or
becomes unbuckled while the
vehicle is moving.
If the driver safety belt is buckled,
neither the light nor the chime
comes on.
Passenger Safety Belt
Reminder Light
There is a passenger safety belt
reminder light near the passenger
airbag status indicator. See
Passenger Sensing System on
page 3-28.
When the vehicle is started, this
light flashes and a chime may come
on to remind passengers to fasten
their safety belt. Then the light stays
on solid until the belt is buckled.This cycle continues several times if
the passenger remains or becomes
unbuckled while the vehicle is
moving.
If the passenger safety belt is
buckled, neither the chime nor the
light comes on.
The front passenger safety belt
warning light and chime may turn on
if an object is put on the seat such
as a briefcase, handbag, grocery
bag, laptop, or other electronic
device. To turn off the warning light
and/or chime, remove the object
from the seat or buckle the
safety belt.
Airbag Readiness Light
This light shows if there is an
electrical problem with the airbag
system. The system check includes
the airbag sensor(s), passenger
sensing system, the pretensioners,
the airbag modules, the wiring, and
the crash sensing and diagnostic

Black plate (14,1)Cadillac CTS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081492) - 2014 - CRC 2nd Edition - 11/18/13
10-14 Vehicle Care
Automatic Transmission
Fluid
How to Check Automatic
Transmission Fluid
It is not necessary to check the
transmission fluid level.
A transmission fluid leak is the only
reason for fluid loss. If a leak
occurs, take the vehicle to your
dealer and have it repaired as soon
as possible.
The vehicle is not equipped with a
transmission fluid level dipstick.
There is a special procedure for
checking and changing the
transmission fluid. Because this
procedure is difficult, this should be
done at the dealer. Contact the
dealer for additional information.
Change the fluid and filter at the
intervals listed inMaintenance
Schedule on page 11-3, and be sure
to use the fluid listed in
Recommended Fluids and
Lubricants on page 11-13.
Engine Air Cleaner/Filter
The engine air cleaner/filter is in the
engine compartment on the driver
side of the vehicle. See Engine
Compartment Overview on
page 10-5 for location.
When to Inspect the Engine Air
Cleaner/Filter
Inspect the air cleaner/filter at the
scheduled maintenance intervals.
SeeMaintenance Schedule on
page 11-3. If you are driving in
dusty/dirty conditions, inspect the
filter at each engine oil change.
How to Inspect the Engine Air
Cleaner/Filter
To inspect the engine air cleaner/
filter, remove the filter from the
vehicle and lightly shake the filter to
release loose dust and dirt. If the
filter remains covered with dirt, a
new filter is required. To inspect or replace the air cleaner/
filter:
2.0L L4 LTG Engine
1. Air Duct Clamp
2. Electrical Connector
3. Screws
1. Disconnect the outlet duct by loosening the air duct clamp (1).
2. Disconnect the electrical connector (2) and wiring
attachment to cover.
3. Remove the screws (3) on top of the cover.

Black plate (15,1)Cadillac CTS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081492) - 2014 - CRC 2nd Edition - 11/18/13
Vehicle Care 10-15
4. Lift the filter cover housing awayfrom the engine.
5. Pull out the filter.
6. Inspect or replace the engine air cleaner/filter.
7. Reverse Steps 1–5 to reinstall the filter cover housing.
3.6L V6 LFX Engine
1. Air Duct Clamp
2. Electrical Connector
3. Screws
1. Disconnect the outlet duct by loosening the air duct clamp (1). 2. Disconnect the electrical
connector (2) and wiring
attachment to cover.
3. Remove the screws (3) on top of the cover.
4. Lift the filter cover housing away from the engine.
5. Pull out the filter.
6. Inspect or replace the engine air cleaner/filter.
7. Reverse Steps 1–5 to reinstall the filter cover housing.
3.6L V6 LF3 Engine
1. Lower Air Duct Clamp
2. Lower Electrical Connector
3. Upper Air Duct Clamp
4. Upper Electrical Connector
5. Screws
1. Disconnect the lower and upper outlet ducts by loosening the
lower (1) and upper (3) air duct
clamps.
2. Disconnect the lower (2) and upper (4) electrical connectors
and wiring attachments to cover.

Black plate (31,1)Cadillac CTS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081492) - 2014 - CRC 2nd Edition - 11/18/13
Vehicle Care 10-31
Replacement Bulbs
Exterior Lamp BulbNumber
License
Plate Lamp W5W LL
For replacement bulbs not listed
here, contact your dealer.
Electrical System
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed. This
greatly reduces the chance of circuit
overload and fire caused by
electrical problems.
Fuses and circuit breakers protect
power devices in the vehicle.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, the
same amperage fuse can be
borrowed. Choose some feature of
the vehicle that is not needed to use
and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
headlamp wiring checked right away
if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop. Wiper function is
available immediately after the wiper
switch is set to off, and back to on.
To protect the wiper motor from
overheating, the wipers may slow
down when the windshield is dry for
a long period of time. If a period of
dry operation, or little moisture,
exceeds ten minutes, the wipers
may switch to intermittent operation,
and remain there. When moisture is
again detected on the windshield,
wiper operation will return to the
operator selected speed.

Black plate (32,1)Cadillac CTS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6081492) - 2014 - CRC 2nd Edition - 11/18/13
10-32 Vehicle Care
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.
Fuses and Circuit
Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by
electrical problems.
To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace
a bad fuse with a new one of the
identical size and rating.Fuses of the same amperage can
be temporarily borrowed from
another fuse location, if a fuse goes
out. Replace the fuse as soon as
possible.
To identify and check fuses, circuit
breakers, and relays, see
Engine
Compartment Fuse Block on
page 10-32, Instrument Panel Fuse
Block on page 10-35, and Rear
Compartment Fuse Block on
page 10-38.Engine Compartment
Fuse Block
The underhood fuse block is on the
passenger side of the engine
compartment.
Lift the fuse block cover to access
the fuses.
The vehicle may not be equipped
with all of the fuses and relays
shown.
{Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.