Cadillac CTS | 2008-2014

Explore Cadillac CTS fuse box diagrams for 2008–2014 models with relay assignments, fuse locations, panel diagrams, and electrical system details. This article covers the second-generation Cadillac CTS, available from 2008, and includes fuse box diagrams for Cadillac CTS 2008, 2009, 2010, 2011, 2012, 2013 and 2014, along with details about the location of the fuse panels inside the vehicle and a clear explanation of the assignment of each fuse and relay (fuse layout).

Engine Compartment

Fuse Box Location

The underhood fuse block is located on the left side (passenger side) of the engine compartment.

Fuse Box Diagram (2008-2009)

CTS 2008

CTS 2009

CTS-V 2009

Fuses

Assignment of the fuses in the engine compartment fuse box (2008-2009)

Fuse Data
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Short-CodeTypeDescription
A/C CLTCHMiniAir Conditioning Clutch
ABSMiniAntilock Braking System (ABS)
AFSMiniAdaptive Forward Lighting System
AIRBAG IGNMiniAirbag Switch
AWDMiniAll-Wheel Drive
S/ROOFMiniSunroof
BCM 1MiniBody Control Module 1
BCM 2MiniBody Control Module 2
BCM 3MiniBody Control Module 3
BCM 4MiniBody Control Module 4
BCM 5MiniBody Control Module 5
BCM 6MiniBody Control Module 6
BCM 7MiniBody Control Module 7
BCM 6, BCM 7MiniBody Control Module 6 and 7
DISPLYMiniDisplay
DRL RTMiniRight Daytime Running Lamp (DRL)
DRL/WSWMiniDaytime Running Lamps / Windshield Washer Pump
DRL/ENG PUMPMiniDaytime Running Lamps
ECMMiniEngine Control Module (ECM)
ECM/TCM IGNMiniECM, Transmission Control Module (TCM), Instrument Panel Cluster (IPC), PASS-Key III+ Module
EMIS 1MiniEmission 1
EMIS 2MiniEmission 2
EVEN COILSMiniEven Coils
FRT FOGMiniFront Fog Lamps
HDM WASHMiniHeadlamp Driver Module Washer
HORNMiniHorn
LO BEAM DRLMiniLow-Beam DRL
LO BEAM DRL LEFTMiniLow-Beam Daytime Running Lamps (Left)
DRL LTMiniLeft Daytime Running Lamps
LT HI BEAMMiniLeft High-Beam Headlamp
LT LO BEAMMiniLeft Low-Beam Headlamp
DRL/LT LO BEAMMiniDaytime Running Lamps / Left Low-Beam Headlamp
LTRMiniCigarette Lighter
MISC IGNMiniIgnition
NAV MTRMiniNavigation Motor
ODD COILSMiniOdd Coils
PED PROTMiniNot Used
PWR MODINGMiniPassKey Module, Body Control Module
RT HI BEAMMiniRight High-Beam Headlamp
RT LO BEAMMiniRight Low-Beam Headlamp
SPAREMiniSpare
STR/WHL/ILLUMMiniSteering Wheel Illumination
TCM BATTMiniTransmission Control Module Battery
TRANS OIL RLYMiniTransmission Oil Relay
WPRMiniWindshield Wiper
WSW PUMPMiniWindshield Washer Pump
ABS MTRJ-CaseABS Motor
BLWRJ-CaseBlower
BRK VAC PUMPJ-CaseBrake Vacuum Pump
FAN 1J-CaseCooling Fan 1
FAN 2J-CaseCooling Fan 2
REAR DEFOGJ-CaseRear Defogger
SPAREJ-CaseSpare
EPBJ-CaseElectric Park Brake
MRTDJ-CaseMR Ride/Suspension Control
STRTRJ-CaseStarter
TRANS PUMPJ-CaseTransmission Pump
WSW/HTRJ-CaseWindshield Washer Heater

Circuit Breakers

Assignment of the circuit breakers in the engine compartment fuse box (2008-2009)

Fuse Data
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Short-CodeDescription
HEAD LAMP WASHHeadlamp Washer

Relays

Assignment of the relays in the engine compartment fuse box (2008-2009)

Fuse Data
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Short-CodeDescription
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)
LO BEAMLow Beam
INCLIntercooler Pump
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)
LT DRLLeft Daytime Running Lamps
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)
RT DRLRight Daytime Running Lamp

Fuse Box Diagram (2010-2014)

Additional info

Fuses

Assignment of the fuses in the engine compartment fuse box (2010-2014)

Fuse Data
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No.TypeDescription
6J-CaseCooling Fan 2
7J-CaseCooling Fan 1
8J-CaseStarter
9J-CaseCTS: Brake Vacuum Pump
CTS-V: Not Used
10J-CaseAntilock Brake System Motor
11MiniNot Used
13J-CaseNot Used
14J-CaseElectric Parking Brake
15J-CaseNot Used
16J-CaseNot Used
17J-CaseBlower Motor
18J-CaseCTS Coupe and Sedan, CTS-V Wagon: Rear Window Defogger
CTS Wagon: Transmission Control Module Battery
19MiniAntilock Braking System (ABS)
22MiniDisplay
23MiniCTS: Not Used
CTS-V Wagon: Sunroof
24MiniBody Control Module 1
25MiniAutomatic Forward Lighting System (HID Only)
26MiniBody Control Module 5
27MiniBody Control Module 4
28MiniNavigation Motor
29MiniCTS: All-Wheel Drive
CTS-V: Not Used
30MiniTransmission Control Module Battery
31MiniHorn
33MiniCTS: Left Low‐Beam Headlamp (Domestic Non‐HID Only)
CTS-V: Not Used
34MiniPedestrian Protection System (Export Only)
35MiniBody Control Module 3
36MiniBody Control Module 2
37J-CaseCTS: Trailer (Export Only)
CTS-V: Magnetic Ride / Suspension Control
38MiniHeadlamp Washer (HID Only)
40MiniCTS: Right Low‐Beam Headlamp (Domestic Non‐HID Only)
CTS-V: Not Used
41MiniAir Conditioning Compressor Clutch
43MiniLow‐Beam Daytime Running Lamps (non‐HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only)
46MiniLeft High‐Beam Headlamp
47MiniRight High‐Beam Headlamp
50MiniRight Daytime Running Lamp, Windshield Washer Pump
51MiniAirbag System Ignition Switch
52MiniEngine Control Module Ignition, Transmission Control Module Ignition
54MiniPower Moding (Immobilizer Module, Ignition Switch)
55MiniCTS: Not Used
CTS-V: Intercooler Pump
56MiniWindshield Wipers
57MiniRight Low‐Beam (HID Only)
58MiniDaytime Running Lamps (non‐HID), Left Low‐Beam (HID Only)
59MiniRight Daytime Running Lamp (HID Only), Right Trailer Turn Signal (Export Only)
60MiniInstrument Panel Auxiliary Power Outlet
61MiniAir Quality Sensor, Inside Rear View Mirror, Rear Camera
62MiniIgnition
64MiniSteering Wheel Illumination
65MiniFront Fog Lamps (HID Only)
69MiniBody Control Module 6, Body Control Module 7
70MiniEmissions 1
71MiniEven Ignition Coils
72MiniCTS: Engine Control Module
CTS-V: Odd Ignition Coils
73MiniEmissions 2
74MiniCTS: Odd Ignition Coils
CTS-V: Engine Control Module
75MiniCTS: Transmission Output Speed Sensor, Brake Vacuum Relay
CTS-V: Not Used
76MiniSpare
77MiniSpare
78MiniSpare
79MiniSpare
80MiniSpare
81MiniSpare

Relays

Assignment of the relays in the engine compartment fuse box (2010-2014)

Fuse Data
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No.Description
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
39Coupe and Sedan: Windshield Washer Pump
Wagon: Not used
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

Luggage Compartment

Fuse Box Location

This fuse block is located on the right side of the vehicle, behind the trim panel in the luggage compartment.

Fuse Box Diagram (2008-2009)

Fuses

Assignment of the fuses in the luggage compartment fuse box (2008-2009)

Fuse Data
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Short-CodeDescription
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
RVC/SNSRRegulated Voltage Control Sensor
S/ROOFSunroof
FSCMFuel System Control Module
SPARESpare
STOP/LPStoplamp
THEFT/UGDOTheft Deterrent System, Universal Home Remote System
TRUNK/RELSETrunk Release

Relays

Assignment of the relays in the luggage compartment fuse box (2008-2009)

Fuse Data
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Short-CodeDescription
FUEL/PUMPFuel Pump
LCKLock
LT FRT/PWR/SEATLeft Front Power Seat
LT/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
FUEL/DR/RELSENot Used
STOP/LPStoplamp
TRUNK/RELSETrunk Release
UNLCKUnlock

Fuse Box Diagram (2010-2014)

Mini Fuses

Assignment of the mini fuses in the luggage compartment fuse box (2010-2014)

Fuse Data
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No.Description
14Right Position Lamp
15Left Position Lamp
16Door Lock
17Console/Auxiliary Power Outlet
18Rear Fog/Export Body Control Module (Export Only)
19Coupe and Sedan: Trunk Release
Wagon: Rear Windshield Wiper/Washer
20Coupe: Easy Entry Seats
Wagon: Windshield Washer Pump
21CTS: Sunroof
CTS-V: Fuel Pump
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
29Engine Control Module
30Canister Vent
31CTS: Fuel Pump
CTS-V: Rear Differential Cooling Pump
33Stop Lamps (Export Only)
34Theft Deterrent System/Universal Garage Door Opener
35Memory Seat Module
36Passenger Door Module
38Coupe and Sedan: Not Used
Wagon: Rear Auxiliary Power Outlet
39Amplifier

Circuit Breakers

Assignment of the circuit breakers in the luggage compartment fuse box (2010-2014)

Fuse Data
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No.Description
1Driver Power Seat Switch
2Passenger Power Seat Switch
3Power Windows
4Power Steering Column
32Left Rear Window Switch
37Right Rear Window Switch

Relays

Assignment of the relays in the luggage compartment fuse box (2010-2014)

Fuse Data
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No.Description
5Stop Lamps (Export Only)
6Door Lock
7Door Unlock
8Fuel Door Unlock (Export Only)
9Right Position Lamp (Export Only)
10Console/Auxiliary Power Outlet
11Coupe and Sedan: Trunk Release
Wagon: Not used
12Side Marker Lamps
13Left Position Lamps

FAQ

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