2006 CADILLAC CTS V sensor

This message will also appear when the windshield
wipers have been on for more than six seconds and the
exterior lamp control is off or in the parking lamp position.
Ice Possible
This message appears when the outside temperature is
cold enough to create icy road conditions.
Left Rear Door Ajar
When this message appears on the display, it means
that the driver’s side rear door was not closed
completely. You should make sure that the door is
closed completely.
Oil Pressure Low – Stop Engine
Notice:If you drive your vehicle while the engine
oil pressure is low, severe engine damage may
occur. If a low oil pressure warning appears on the
instrument panel cluster and/or DIC, stop the
vehicle as soon as possible. Do not drive the vehicle
until the cause of the low oil pressure is corrected.
SeeEngine Oil on page 5-16for more information.
Passenger Door Ajar
When this message appears on the display, it means
that the passenger’s side front door was not closed
completely. You should make sure that the door
is closed completely.
Right Rear Door Ajar
When this message appears on the display, it means
that the passenger’s side rear door was not closed
completely. You should check to make sure that
the door is closed completely.
Service AC (Air Conditioning) System
This message appears when the electronic sensors that
control the air conditioning and heating systems are
no longer working. Have the climate control system
serviced by your GM dealer if you notice a drop
in heating and air conditioning efficiency.
Service Air Bag
There is a problem with the airbag system when this
message appears. Have your vehicle serviced by your
GM dealer immediately. SeeAirbag Readiness Light
on page 3-34for more information.
Service Brake Assist
This message will display when a problem with the
panic brake assist system has been detected. Have your
vehicle serviced by your GM dealer.
3-66

{CAUTION:
Run-at tires are constructed differently than
other tires and could explode during improper
service. You or others could be injured or killed
if you attempt to repair, replace, dismount, or
mount a run-at tire. Let only an authorized
run-at service center repair, replace, dismount,
and mount run-at tires.
The valve stems on your run-at tires have sensors that
are part of the Tire Pressure Monitor System (TPMS).
These sensors contain batteries which are designed
to last for 10 years under normal driving conditions. See
your dealer if you ever need to have a wheel replaced,
or if the sensors ever need replacement.
Notice:Using liquid sealants can damage the tire
valves and tire pressure monitor sensors in your
vehicle’s run-at tires. This damage would not
be covered by warranty. Do not use liquid sealants
in your vehicle’s run-at tires.
Ination - Tire Pressure
Tires need the correct amount of air pressure to operate
effectively.
Notice:Do not let anyone tell you that
under-ination or over-ination is all right. It is not.
If your tires do not have enough air (under-ination),
you can get the following:
Too much exing
Too much heat
Tire overloading
Premature or irregular wear
Poor handling
Reduced fuel economy
If your tires have too much air (over-ination),
you can get the following:
Unusual wear
Poor handling
Rough ride
Needless damage from road hazards
5-65

Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS) uses radio
and sensor technology to check tire pressure levels.
If your vehicle has this feature, sensors are mounted on
the tire and wheel assembly. The TPMS sensors
transmit tire pressure readings to a receiver located in
the vehicle once every 60 seconds while the vehicle
is being driven, and once every 60 minutes if the vehicle
is stationary for more than 15 minutes.
If your vehicle has the base audio system, the Driver
Information Center (DIC) displays TPMS warnings and
messages on the radio’s display screen. SeeSystem
Controls on page 3-53andDIC Warnings and Messages
on page 3-61for additional information and details about
the DIC operation and displays. If your vehicle has the
Navigation system, TPMS warnings and messages are
displayed on the message center screen, located inside
the tachometer. SeeMessage Center (CTS-V) on
page 3-47for information about the message center
operation and displays.
If a low tire pressure condition is detected, the TPMS
will display the Check Tire Pressure message on
the DIC or message center and, at the same time,
illuminate the low tire pressure warning symbol on
the instrument panel cluster.Each tire, including the spare (if provided), should be
checked monthly when cold and inated to the ination
pressure recommended by the vehicle manufacturer
on the vehicle placard or tire ination pressure label.
When the low tire pressure
telltale is illuminated, one
or more of your tires is
signicantly under-inated.
You should stop and check your tires as soon as
possible, and inate them to the proper pressure.
Driving on a signicantly under-inated tire causes
the tire to overheat and can lead to tire failure.
Under-ination also reduces fuel efficiency and tire
tread life, and may affect the vehicle’s handling
and stopping ability.
The Tire and Loading Information label shows the size
of your vehicle’s original tires and their recommended
cold ination pressures. SeeLoading Your Vehicle
on page 4-32, for the location of the tire and loading
information label. Also seeInation - Tire Pressure
on page 5-65.
5-68

Your vehicle’s TPMS can alert you about a low tire
pressure condition but it does not replace normal tire
maintenance. SeeTire Inspection and Rotation on
page 5-71andTires on page 5-57.
Notice:Do not use a tire sealant if your vehicle
has Tire Pressure Monitors. The liquid sealant can
damage the tire pressure monitor sensors.
TPMS Sensor Identication Codes
Each TPMS sensor has a unique identication code.
Any time you replace one or more of the TPMS sensors
or rotate the tires, the identication codes will need to
be matched to the new tire and wheel position. The
sensors are matched, to the tire and wheel positions,
in the following order: left front (LF), right front (RF), right
rear (RR), and left rear (LR) using a TPMS diagnostic
tool. See your GM dealer for service.
The TPMS sensors may also be matched to each tire
and wheel position by increasing or decreasing the
tire’s air pressure. When increasing tire pressure do
not exceed the maximum ination pressure indicated
on the tire’s sidewall.
You will have two minutes to match the rst tire and
wheel position, and ve minutes overall, to match all
four tire and wheel positions. If it takes longer than
two minutes, to match the rst tire and wheel, or more
than ve minutes to match all four tire and wheel
positions the matching process stops and you will
need to start over.The TPM matching process is outlined below:
1. Set the parking brake.
2. Turn the ignition switch to ON with the engine off.
3. Using the Remote Keyless Entry (RKE) transmitter,
lock and unlock the vehicle’s doors.
4. Press the lock and unlock buttons, at the same
time, on the RKE transmitter. A single horn chirp
will sound, indicating that the TPMS system is
ready, and the sensor matching process can begin.
5. Start with the driver’s side front tire.
6. Remove the valve cap from the valve stem.
Activate the TPMS sensor by increasing or
decreasing the tire’s air pressure for ve seconds,
or until a horn chirp sounds. The horn chirp,
which may take up to 30 seconds, conrms that the
sensor identication code has been matched to
this tire position. To decrease the tire’s air-pressure
use the pointed end of the valve cap, a pencil-style
air pressure gage, or a key.
7. Proceed to the passenger’s side front tire, and
repeat the procedure in Step 6.
8. Proceed to the passenger’s side rear tire, and
repeat the procedure in Step 6.
9. Proceed to the driver’s side rear tire, and repeat
the procedure in Step 6.
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10. After hearing the conrming double horn chirp,
for the left rear tire, exit the matching process
by turning the ignition switch to OFF.
11. Set all four tires to the recommended air pressure
level as indicated on the tire and loading
information label.
12. Put the valve caps back on the valve stems.
The TPMS will not function properly, if one or more
of the TPMS sensors are missing or inoperable. If your
vehicle has a compact spare tire, the spare tire and
wheel assembly does not contain a TPMS sensor.
If you replace one of the road tires with the spare, or
if the system detects a missing or inoperable sensor, the
Service Tire Monitor System message will be displayed
on the DIC. If you have replaced a tire and wheel
assembly without transferring the TPMS sensors, the
error message will be displayed. Once you re-install the
TPMS sensors, the message should go off. See your
GM dealer for service if all TPMS sensors are installed
and the error message comes on and stays on. Have
your vehicle serviced as soon as possible.
If your vehicle has a message center and the system
detects a missing or inoperable sensor an error
message of several dashes–––willbeshown on
the message center display. If you have replaced
a tire and wheel assembly without transferring the
TPMS sensors, the error message will be displayed.Once you re-install the TPMS sensors, the error
message should go off. See your GM dealer for service
if all TPMS sensors are installed and the error
message comes on and stays on.
The TPMS operates on a radio frequency subject to
Federal Communications Commission (FCC) Rules and
with Industry and Science Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modications to this system by other than
an authorized service facility could void authorization to
use this equipment.
5-70

If your vehicle has the Tire Pressure Monitor System
(TPMS) the TPMS sensors will need to be reset
and matched to the tire/wheel position. A special TPMS
diagnostic tool is used to reset the sensor identication
codes. See your dealer for service.
Make certain that all wheel nuts are properly tightened.
See “Wheel Nut Torque” underCapacities and
Specications on page 5-115.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to the vehicle.
In an emergency, you can use a cloth or a
paper towel to do this; but be sure to use a
scraper or wire brush later, if needed, to get all
the rust or dirt off. SeeChanging a Flat Tire
(CTS Only) on page 5-84.
When It Is Time for New Tires
One way to tell when it is
time for new tires is to
check the treadwear
indicators, which will
appear when your tires
have only 1/16 inch
(1.6 mm) or less of tread
remaining.
You need a new tire if any of the following statements
are true:
You can see the indicators at three or more places
around the tire.
You can see cord or fabric showing through the
tire’s rubber.
The tread or sidewall is cracked, cut, or snagged
deep enough to show cord or fabric.
The tire has a bump, bulge, or split.
The tire has a puncture, cut, or other damage that
cannot be repaired well because of the size or
location of the damage.
5-72

Fuses Usage
RT PARKPassenger’s Side Taillamp
Assembly, Front Sidemarker and
Front Parking Lamp Assembly
HORN Dual Horn Assembly
LT HI BEAMDriver’s Side High-Beam
Headlamp
LT LOW BEAM Driver’s Side Low-Beam Headlamp
RT LOW BEAMPassenger’s Side Low-Beam
Headlamp
RT HI BEAMPassenger’s Side High-Beam
Headlamp
TOSManual Transmission Output
Speed Sensor
SPARE Not Used
THEFTECM (Engine Control Module),
TCM (Transmission Control
Module), PASS-Key
®III+ Module
LT PARKDriver’s Side Taillamp Assembly,
Front Sidemarker and Front
Parking Lamp Assembly
DIMMINGRear License Plate Assembly,
Dash Integrated Module (DIM)
Fuses Usage
DIM/ALDLDIM, ALDL (Assembly Line
Data Link)
FLASHERTurn Signal/Hazard Flasher
Module
ECM Electronic Control Module
STRG CTLSSteering Wheel Control Pad,
Headlamp Switch
HTR VLV/CLTCHClutch Switch (Normal Closed),
Clutch Switch (Normal Open),
Jumper to Start Relay Coil for
Automatic Transmission
WASH NOZDriver’s and Passenger’s Side
Heated Washer Nozzles
PRE O2/CAMDriver’s & Passenger’s Side
Oxygen Sensors, CAM Phaser,
Canister Purge
TCM/IPCTransmission Control Module,
Engine Control Module,
Instrument Panel Cluster
SPARE Not Used
IGN MOD/MAFFront Bank Ignition Modules,
Mass Airow Sensor
5-107

Fuses Usage
ELEC PRNDL Electronic PRNDL (Export)
SPARE Not Used
SPARE Not Used
IGN SWIgnition Switch (Power to IGN-3
and CRANK)
VOLT CHECK DIM (Dash Integration Module)
ECM/TCMTCM (Transmission Control
Module), ECM (Engine Control
Module), IPC (Instrument Panel
Cluster), PASS-Key
®III+ Module
WPR MODWindshield Wiper Module
Assembly
ODD INJ/COILSOdd Ignition Coils, Fuel Injectors,
Odd Injection Coils
COMP CLUTCH Compressor Clutch
WPR SW Windshield Wiper/Washer Switch
FOG LAMP Fog Lamps
OUTLETCenter Console Accessory Power
Outlet
Fuses Usage
POST 02Driver’s and Passenger’s Side
Oxygen Sensors, LRPDB
(Pusher Cooling Fan Relay)
I/P OUTLETInstrument Panel Accessory
Power Outlet
CCP Climate Control
EVEN INJ/COILS Even Injection Coils
SPARE Not Used
SPARE Not Used
SPARE Not Used
Circuit
BreakersUsage
HDLP WASH
C/B-OPTHeadlamp Washer Motor
5-108