Fuse Box Diagrams Cadillac CTS (2008-2011)

In this article, you will find information about the fuses of the Cadillac CTS (models 2008, 2009, 2010, and 2011), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.

Cadillac CTS (2008-2011)

Checking and Replacing Fuses in Cadillac CTS

The wiring circuits in your vehicle are protected from short circuits by a combination of fuses and circuit breakers. Circuit breakers in the fuse block protect the power windows and other power accessories. When the current load is too heavy, the circuit breaker opens and closes, protecting the circuit until the problem is fixed or goes away. This greatly reduces the chance of fires caused by electrical problems. Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new one of the identical size and rating.

Caution!

Spilling liquid on any electrical components on your vehicle may damage it. Always keep the covers on any electrical component.

Location of Fuse Boxes

Underhood Fuse Block:
The underhood fuse block is located on the passenger side of the engine compartment. Lift the fuse block cover to access the fuses.
Cadillac CTS (2008-2011): Engine compartment fuse box location

Rear Compartment Fuse Block:
The rear compartment fuse block is located on top of the battery, on the right side of the trunk. The battery access door must be removed to access the fuse block.
Cadillac CTS (2008-2011): Rear compartment fuse box location

The windshield wiper motor is protected by an internal circuit breaker. If the wiper motor overheats due to heavy snow, the wipers will stop until the motor cools and will then restart.


Fuse Box Diagrams

2008

Underhood Fuse Block

Cadillac CTS (2008): Engine compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2008)
FusesUsage
A/C CLTCHAir Conditioning Clutch
ABSAntilock Braking System (ABS)
AFSAdaptive Forward Lighting System
AIRBAG IGNAirbag Switch
AWDAll-Wheel Drive
BCM 1Body Control Module 1
BCM 2Body Control Module 2
BCM 3Body Control Module 3
BCM 4Body Control Module 4
BCM 5Body Control Module 5
BCM 6Body Control Module 6
BCM 7Body Control Module 7
DISPLYDisplay
DRL RTRight Daytime Running Lamp (DRL)
DRL/ENG PUMPDaytime Running Lamps
ECMEngine Control Module (ECM)
ECM/TCM IGNECM, Transmission Control Module (TCM), Instrument Panel Cluster (IPC), PASS-Key III+ Module
EMIS 1Emission 1
EMIS2Emission 2
EVEN COILSEven Coils
FRTFOGFront Fog Lamps
HDM WASHHeadlamp Driver Module Washer
HORNHorn
LO BEAM DRLLow-Beam DRL
LT HI BEAMLeft High-Beam Headlamp
LT LO BEAMLeft Low-Beam Headlamp
LT LO BEAMLeft Low-Beam Headlamp
LTRCigarette Lighter
MISC IGNIgnition
NAV MTRNavigation Motor
ODD COILSOdd Coils
PED PROTNot Used
PWR MODINGPassKey Module, Body Control Module
RT HI BEAMRight High-Beam Headlamp
RT LO BEAMRight Low-Beam Headlamp
RT LO BEAMRight Low-Beam Headlamp
SPARESpare
SPARESpare
STR/WHL/ ILLUMSteering Wheel Illumination
TOM BATTTransmission Control Module Battery
TRANS OIL RLYTransmission Oil Relay
WPRWindshield Wiper
WSW PUMPWindshield Washer Pump
J-Case Fuses
ABS MTRABS Motor
BLWRBlower
BRK VAC PUMPBrake Vacuum Pump
FAN 1Cooling Fan 1
FAN 2Cooling Fan 2
REAR DEFOGRear Defogger
SPARESpare
SPARESpare
SPARESpare
STRTRStarter
TRANS PUMPTransmission Pump
WSW/HTRWindshield Washer Heater
Relays
A/C CMPRSR CLTCHAir Conditioning Compressor Clutch
DRL (W/O HID) LO BEAM (HID)Daytime Running Lamps (without High Intensity Discharge), Low-Beam Headlamps (High Intensity Discharge)
ENG PUMPEngine Pump
FAN S/PCooling Fan Series / Parallel
FAN 1Cooling Fan 1
FAN 2Cooling Fan 2
HEAD LAMP WASHHeadlamp Washer
HI BEAMHigh-Beam Headlamp
HORNHorn
IGN 1Ignition 1
LO BEAM (W/O HID) LT DRL (HID)Low-Beam (without High Intensity Discharge), Left Daytime Running Lamp (High Intensity Discharge)
PWR/TRNPowertrain
REAR DEFOGRear Defogger
SPARESpare
STRTRStarter
WPRWindshield Wiper
WPR HIWindshield Wiper High Speed
WSW PUMPWindshield Washer Pump
Rear Compartment Fuse Block

Cadillac CTS (2008): Rear compartment fuse box diagram

List of fuses in the Rear Compartment Fuse Block (2008)
NameUsage
Relays
FUEL/PUMPFuel Pump
LCKLock
LF FRT/ PWR/SEATLeft Front Power Seat
LF/POS/LPLeft Position Lamp
PWR CLMNPower Steering Column
PWR/WNDWPower Window
REAR/FOGNot Used
RT FRT/ PWR/SEATRight Front Power Seat
RT/POS/LPRight Position Lamp
SPARESpare
STOP/LPStoplamp
TRUNK/RELSETrunk Release
UNLCKUnlock
Fuses
AIRBAGAirbag System
AMPAmplifier
AUX/OUTLETAuxiliary Power Outlet
CNSTR/VENTCanister Vent
DR/LCKDoor Lock
ECMEngine Control Module (ECM)
FUEL/PUMPFuel Pump
LT/POS/LPLeft Position Lamp
LT/REAR/WNDWLeft Rear Window
MSMMemory Seat Module
ONSTAROnStar System
PDMPassenger Door Module
RDOAudio System
RDO/SPKRAudio Speakers
REAR/FOGNot Used
REAR/WNDWRear Window
RKE/PASS-KEY/MDLRemote Keyless Entry System, Pass-Key Theft Deterrent Feature Module
RT/POS/LPRight Position Lamp
RT/POS/LPRight Position Lamp
RVC/SNSRRegulated Voltage Control Sensor
S/ROOFSunroof
SPARESpare
SPARESpare
STOP/LPStoplamp
THEFT/UGDOTheft Deterrent System, Universal Home Remote System
TRUNK/RELSETrunk Release

2009

Underhood Fuse Block

Cadillac CTS (2009): Engine compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2009)
NameUsage
Mini-Fuses
A/C CLTCHAir Conditioning Clutch
ABSAntilock Braking System (ABS)
AFSAdaptive Forward Lighting System
AIRBAG IGNAirbag Switch
AWDAll-Wheel Drive
BCM 1Body Control Module 1
BCM 2Body Control Module 2
BCM 3Body Control Module 3
BCM 4Body Control Module 4
BCM 5Body Control Module 5
SPARESpare
BCM 6, BCM 7Body Control Module 6 and 7
DISPLYDisplay
DRL RTRight Daytime Running Lamp (DRL)
DRL/WSWDaytime Running Lamps/Windshield Washer Pump
ECMEngine Control Module (ECM)
ECM/TCM IGNECM, Transmission Control Module (TCM), Instrument Panel Cluster (IPC), PASS-Key III+ Module
EMIS 1Emission 1
EMIS2Emission 2
EVEN COILSEven Coils
FRT FOGFront Fog Lamps
HDM WASHHeadlamp Driver Module Washer
HORNHorn
LO BEAM DRL LEFTLow-Beam Daytime Running Lamps (Left)
LT HI BEAMLeft High-Beam Headlamp
LT LO BEAMLeft Low-Beam Headlamp
DRL/LT LO BEAMDaytime Running Lamps / Left Low-Beam Headlamp
LTRCigarette Lighter
MISC IGNIgnition
NAV MTRNavigation Motor
ODD COILSOdd Coils
PED PRONot Used
PWR MODINGPASS-Key III+ Module, Body Control Module
RT HI BEAMRight High-Beam Headlamp
RT LO BEAMRight Low-Beam Headlamp
RT LO BEAMRight Low-Beam Headlamp
SPARESpare
SPARESpare
STR/WHL/ ILLUMSteering Wheel Illumination
TCM BATTTransmission Control Module Battery
MAN SPD SNSRManual Speed Sensor
WPRWindshield Wiper
ENG PUMPEngine Pump
J-Case Fuses
ABS MTRABS Motor
BLWRBlower
BRK VAC PUMPBrake Vacuum Pump
FAN 1Cooling Fan 1
FAN 2Cooling Fan 2
REAR DEFOGRear Defogger
SPARESpare
EPBElectric Park Brake
SPARESpare
STRTRStarter
SPARESpare
WSW/HTRWindshield Washer Heater
Relays
A/C CMPRSR CLTCHAir Conditioning Compressor Clutch
DRL (W/O HID) LO BEAM (HID)Daytime Running Lamps (without High Intensity Discharge), Low-Beam Headlamps (High Intensity Discharge)
ENG PUMPEngine Pump
FAN S/PCooling Fan Series / Parallel
FAN 1Cooling Fan 1
FAN 2Cooling Fan 2
HI BEAMHigh-Beam Headlamp
HORNHorn
IGN 1Ignition 1
LO BEAM (W/O HID) LT DRL (HID)Low-Beam (without High Intensity Discharge), Left Daytime Running Lamp (High Intensity Discharge)
PWR/TRNPowertrain
REAR DEFOGRear Defogger
SPARESpare
STRTRStarter
WPRWindshield Wiper
WPR HIWindshield Wiper High Speed
WSW PUMPWindshield Washer Pump
FOG LAMPFog Lamps
RT DRL (HID)Right Daytime Running Lamp (High Intensity Discharge)
Circuit Breakers
HEAD LAMP WASHHeadlamp Washer
Rear Compartment Fuse Block

Cadillac CTS (2009): Rear compartment fuse box diagram

List of fuses in the Rear Compartment Fuse Block (2009)
NameUsage
Relays
FUEL/PUMPFuel Pump
LCKLock
LT/POS/LPLeft Position Lamp
REAR/FOGNot Used
RT/POS/LPRight Position Lamp
FUEL/DR/ RELSENot Used
STOP/LPStoplamp
TRUNK/RELSETrunk Release
UNLCKUnlock
Mini-Fuses
AIRBAGAirbag System
AMPAmplifier
AUX/OUTLETAuxiliary Power Outlet
CNSTR/VENTCanister Vent
DR/LCKDoor Lock
ECMEngine Control Module (ECM)
FUEL/PUMPFuel Pump
LT/POS/LPLeft Position Lamp
MSMMemory Seat Module
ONSTAROnStar System
PDMPassenger Door Module
RDOAudio System
RDO/SPKRAudio Speakers
REAR/FOGNot Used
RKE / PASS-KEY/ MDLRemote Keyless Entry System, PASS-Key III+ Theft Deterrent Feature Module
RT/POS/LPRight Position Lamp
RT/POS/LPRight Position Lamp
RVC/SNSRRegulated Voltage Control Sensor
S/ROOFSunroof
SPARESpare
SPARESpare
STOP/LPStoplamp
THEFT/UGDOTheft Deterrent System, Universal Home Remote System
TRUNK/RELSETrunk Release
Circuit Breakers
LF FRT/ WR/SEATLeft Front Power Seat
PWR CLMNPower Steering Column
PWR/WNDWPower Window
RT FRT/ WR/SEATRight Front Power Seat
LT/REAR NDWLeft Rear Window
REAR/WNDWRight Rear Window

2010

Underhood Fuse Block

Cadillac CTS (2010): Engine compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2010)
NameUsage
Mini-Fuses
A/C CLTCHAir Conditioning Clutch
ABSAntilock Braking System (ABS)
AFSAdaptive Forward Lighting System
AIRBAG IGNAirbag Switch
AWDAll-Wheel Drive
BCM 1Body Control Module 1
BCM 2Body Control Module 2
BCM 3Body Control Module 3
BCM 4Body Control Module 4
BCM 5Body Control Module 5
AQS/ISRVM/ REAR CAMERAAir Quality Sensor / Inside Rear View Mirror/Rear View Camera
BCM 6, BCM 7Body Control Module 6 and 7
DISPLYDisplay
DRL RTRight Daytime Running Lamp (DRL)
DRL/WSWDaytime Running Lamps / Windshield Washer Pump
ECMEngine Control Module (ECM)
ECM/TCM IGNECM, Transmission Control Module (TCM), Instrument Panel Cluster (IPC), PASS-Key III+ Module
EMIS 1Emission 1
EMIS2Emission 2
EVEN COILSEven Coils
FRT FOGFront Fog Lamps
HDLP WASHHeadlamp Washer
HORNHorn
LO BEAM DRL LEFTLow-Beam Daytime Running Lamps (Left)
LT HI BEAMLeft High-Beam Headlamp
LT LO BEAMLeft Low-Beam Headlamp
DRL/LT LO BEAMDaytime Running Lamps/Left Low-Beam Headlamp
LTRCigarette Lighter
MISC IGNIgnition
NAV MTRNavigation Motor
ODD COILSOdd Coils
PED PRONot Used
PWR MODINGPassKey Module, Body Control Module
RT HI BEAMRight High-Beam Headlamp
RT LO BEAMRight Low-Beam Headlamp
RT LO BEAMRight Low-Beam Headlamp
SPARESpare
SPARESpare
STR/WHL/ CNTRLSteering Wheel Illumination
TCM BATTTransmission Control Module Battery
TOSS/BRK VAC RLYTransmission Output Speed Sensor / Brake Vacuum Relay
WPRWindshield Wiper
SPARESpare
J-Case Fuses
ABS MTRABS Motor
BLWRBlower
BRK VAC PUMPBrake Vacuum Pump
FAN 1Cooling Fan 1
FAN 2Cooling Fan 2
REAR DEFOGRear Defogger
SPARESpare
EPBElectric Park Brake
SPARESpare
STRTRStarter
SPARESpare
WSW/HTRNot Used
Relays
A/C CMPRSRAir Conditioning Compressor Clutch
DRL (W/0 HID) LO BEAM (HID)Daytime Running Lamps (without High Intensity Discharge), Low-Beam Headlamps (High Intensity Discharge)
SPARESpare
FAN S/PCooling Fan Series / Parallel
FAN 1Cooling Fan 1
FAN 2Cooling Fan 2
HI BEAMHigh-Beam Headlamp
HORNHorn
IGN 1Ignition 1
LO BEAM (W/O HID) LT DRL (HID)Low-Beam (without High Intensity Discharge), Left Daytime Running Lamp (High Intensity Discharge)
HDLP WASHHeadlamp Washer
PWR/TRNPowertrain
REAR DEFOGRear Defogger
SPARESpare
STRTRStarter
WPRWindshield Wiper
WPR HIWindshield Wiper High Speed
WSWWindshield Washer Pump
FOG LAMPFog Lamps
RT DRL (HID)Right Daytime Running Lamp (High Intensity Discharge)
Rear Compartment Fuse Block

Cadillac CTS (2010): Rear compartment fuse box diagram

List of fuses in the Rear Compartment Fuse Block (2010)
NameUsage
Relays
MRKR/LPNot Used
LCKLock
LT/POS/LPLeft Position Lamp
REAR/FOGNot Used
RT/POS/LPNot Used
FUEL/DR/RELSENot Used
STOP/LPNot Used
TRUNK/ RELSETrunk Release
UNLCKUnlock
Mini-Fuses
AIRBAGAirbag System
AMPAmplifier
AUX/OUTLETAuxiliary Power Outlet
CNSTR/VENTCanister Vent
DR/LCKDoor Lock
ECMEngine Control Module (ECM)
FUEL/PUMPFuel Pump
LT/POS/LPLeft Position Lamp
MSMMemory Seat Module
ONSTAROnStar System
PDMPassenger Door Module
RDOAudio System
RDO/SPKRAudio Speakers
REAR/FOGNot Used
RKE/PASS-KEY/MDLRemote Keyless Entry System, Pass-Key Theft Deterrent Feature Module
RT/POS/LPNot Used
RT/POS/LPRight Position Lamp
RVC/SNSRRegulated Voltage Control Sensor
S/ROOFSunroof
TRLR/POS/LPNot Used
EE SEATNot Used
STOP/LPNot Used
THEFT/UGDOTheft Deterrent System, Universal Home Remote System
TRUNK/RELSETrunk Release
Circuit Breakers
DRV/PWR/ SEATLeft Front Power Seat
PWR CLMNPower Steering Column
PWR/WNDWPower Window
PASS/PWR/SEATRight Front Power Seat
LT/REAR/WNDWLeft Rear Window
REAR/WNDWRight Rear Window

2011

Underhood Fuse Block

Cadillac CTS (2011): Engine compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2011)
Usage
Mini-Fuses
11Not Used
19Antilock Braking System (ABS)
22Display
23Not Used
24Body Control Module 1
25Automatic Forward Lighting System (HID Only)
26Body Control Module 5
27Body Control Module 4
28Navigation Motor
29All-Wheel Drive
30Transmission Control Module Battery
31Horn
33Left Low-Beam Headlamp (Domestic Non-HID Only)
34Pedestrian Protection System (Export Only)
35Body Control Module 3
36Body Control Module 2
38Headlamp Washer (HID Only)
40Right Low-Beam Headlamp (Domestic Non-HID Only)
41Air Conditioning Compressor Clutch
43Low-Beam Daytime Running Lamps (non-HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only)
46Left High-Beam Headlamp
47Right High-Beam Headlamp
50Right Daytime Running Lamp, Windshield Washer Pump
51Airbag System Ignition Switch
52Engine Control Module Ignition, Transmission Control Module Ignition
54Power Moding (Immobilizer Module, Ignition Switch)
55Not Used
56Windshield Wipers
57Right Low-Beam (HID Only)
58Daytime Running Lamps (non-HID), Left Low-Beam (HID Only)
59Right Daytime Running Lamp (HID Only), Right Trailer Turn Signal (Export Only)
60Instrument Panel Auxiliary Power Outlet
61Air Quality Sensor, Inside Rear View Mirror, Rear Camera
62Ignition
64Steering Wheel Illumination
65Front Fog Lamps (HID Only)
69Body Control Module 6, Body Control Module 7
70Emissions 1
71Even Ignition Coils
72Engine Control Module
73Emissions 2
74Odd Ignition Coils
75Transmission Output Speed Sensor, Brake Vacuum Relay
76Spare
77Spare
78Spare
79Spare
80Spare
81Spare
J-Case Fuses
6Cooling Fan 2
7Cooling Fan 1
8Starter
9Brake Vacuum Pump
10Antilock Brake System Motor
13Not Used
14Electric Parking Brake
15Not Used
16Not Used
17Blower Motor
18Rear Window Defogger
37Not Used
Relays
1Cooling Fan 2
2Cooling Fan 1
3Starter
4Rear Window Defogger
5Instrument Panel Auxiliary Power Outlet
12Horn
20Headlamp Washer (HID Only)
21Cooling Fan (Series / Parallel)
32Air Conditioning Compressor Clutch
39Windshield Washer Pump
42Right Daytime Running Lamp, Trailer Turn Signal
44Low-Beam (non-HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only)
45Front Fog Lamps (HID Only)
48High-Beam Headlamps
49Daytime Running Lamps (Non-HID), Low-Beam Headlamps (HID)
53Not Used
63Main Ignition
66Windshield Wipers
67Powertrain
68Windshield Wipers High Speed
Rear Compartment Fuse Block

Cadillac CTS (2011): Rear compartment fuse box diagram

List of fuses in the Rear Compartment Fuse Block (2011)
Usage
Relays
5Stop Lamps (Export Only)
6Door Lock
7Door Unlock
8Fuel Door Unlock (Export Only)
9Right Position Lamp (Export Only)
10Console / Auxiiiary Power Outlet
11Sedan Trunk Release / Coupe Rear Fog (Export Only)
12Side Marker Lamps
13Left Position Lamps
Mini-Fuses
14Right Position Lamp
15Left Position Lamp
16Door Lock
17Console / Auxiliary Power Outlet
18Rear Fog / Export Body Control Module (Export Only)
19Trunk Release
20Easy Entry Seats (Coupe Only)
21Sunroof
22Right Position Lamp (Export Only)
23Regulated Voltage Control Sensor
24Audio System (Radio)
25Airbag System
26Remote Keyless Entry / PASS-Key Theft Deterrent Module
27Audio Speakers / Subwoofer
28OnStar System (If Equipped)
29Engine Control Module
30Canister Vent
31Fuel Pump
33Stop Lamps (Export Only)
34Theft Deterrent System / Universal Garage Door Opener
35Memory Seat Module
36Passenger Door Module
38Not Used
39Amplifier
Circuit Breakers
1Driver Power Seat Switch
2Passenger Power Seat Switch
3Power Windows
Circuit Breakers
4Power Steering Column
32Left Rear Window Switch
37Right Rear Window Switch