Fuses and relays Cadillac CTS (2003-2007)

Fuse Layout Cadillac CTS 2003-2007

Fuses and relays Cadillac CTS (2003-2007)

Fuse Box in the engine compartment

Fuse Box Location

Fuses and relays Cadillac CTS (2003-2007)

Fuse box diagram

2003-2004Fuses and relays Cadillac CTS (2003-2007)

2005-2007Fuses and relays Cadillac CTS (2003-2007)

Assignment of the fuses and relays in the engine compartment

Name Description
Fuses
RT PARK Passenger’s Side Taillamp Assembly, Front Sidemarker and Front Parking Lamp Assembly
HORN Dual Horn Assembly
LT HI BEAM Driver’s Side High-Beam Headlamp
LT LOW BEAM Driver”s Side Low-Beam Headlamp
RT LOW BEAM Passenger’s Side Low-Beam Headlamp
RT HI BEAM Passenger’s Side High-Beam Headlamp
TOS Manual Transmission Output Speed Sensor
SPARE Not Used
THEFT ECM (Electronic Control Module), TCM (Transmission Control Module), PASS-Key 111+ Module
LT PARK Driver’s Side Taillamp Assembly, Front Sidemarker and Front Parking Lamp Assembly
LIC/DIMMING /
DIMMING
Rear License Plate Assembly, Dash Integrated Module (DIM)
DIM/ALDL DIM, ALDL (Assembly Line Data Link)
FLASHER Turn Signal/Hazard Flasher Module
MANIFOLD Manifold Flaps 1 and 2, Air Mass Meter, Canister Purge Valve
STRG CTLS Steering Wheel Control Pad, Headlamp Switch
HTR VLV/ CLTCH Heater Valve, Clutch Switch (Normal Closed), Clutch Switch (Normal Open), Jumper to Start Relay Coil for Automatic Transmission
WASH NOZ Driver’s and Passenger’s Side Heated Washer Nozzles
PRE O2/CAM Driver’s & Passenger’s Side Oxygen Sensors, CAM Phaser, Canister Purge
ECM Electronic Control Module
TCM/IPC TCM, ECM and IPC (Instrument Panel Cluster)
IGN MOD /
IGN MOD/MAF
Front Bank Ignition Modules
ELEC PRNDL Electronic PRNDL
TCC/ET TCC/ET Brake Switch (Extended Travel), TCC/ET Brake Switch (Cruise Disable)
STOP LP SW Stoplamp Switch
IGN SW Ignition Switch (Power to IGN-3 and CRANK)
VOLT CHECK DIM (Dash Integration Module)
ECM/TCM TCM (Transmission Control Module), ECM (Electronic Control Module), IPC (Instrument Panel Cluster), PASS-Key 111+ Module
ODD INJ/COILS Odd Ignition Coils, Fuel Injectors, Odd Injection Coils
WPR MOD Windshield Wiper Module Assembly
INJ Fuel Injectors
COMP CLUTCH Compressor Clutch
WPR SW Windshield WiperA/Vasher Switch
FOG LAMP Fog Lamps
OUTLET Center Console Accessory Power Outlet
POST O2 Driver’s and Passenger’s Side Oxygen Sensors, LRPDB (Pusher Cooling Fan Relay)
I/P OUTLET Instrument Panel Accessory Power Outlet
CCP Climate Control
EVEN INJ/COILS Even Injection Coils
PRE O2 Driver’s and Passenger’s Side Oxygen Sensors, Transmission Output Speed Sensor
Circuit Breakers
HDLP WASH C/B-OPT Headlamp Washer Motor (Optional)
J-Case fuses
R REAR RRPDB (Passenger’s Side Rear Power Distribution Box)
R REAR RRPDB (Passenger’s Side Rear Power Distribution Box)
L REAR LRPDB (Driver”s Side Rear Power Distribution Box)
L REAR LRPDB (Driver”s Side Rear Power Distribution Box)
HI FAN High Cooling Fan Motor
LO FAN Low Cooling Fan Motor
BLOWER PWM Fan Motor Assembly
STARTER Starter Solenoid
EBCM Electronic Brake Control Module
ABS Anti-Lock Brake System
Wiring Harnesses
BODY W/H Wiring Harness Connection
I/P W/H Wiring Harness Connection
ENG W/H Engine Wiring Harness Connection
FORWARD LAMP Forward Lamp Wiring Harness Connection
Relays
LO SPEED FAN RELAY MINI Low Speed Fan Motor
HI SPEED FAN RELAY MINI High Speed Fan Motor
ACCESSORY RELAY MINI Accessory Power Outlets
S/ P FAN RELAY MINI Series/Parallel Fan
PARK LAMP RELAY MICRO Parking Lamps
HORN RELAY MICRO Horn
HI BEAM RELAY MICRO High-Beam Headlamps
DRL RELAY MICRO-OPT Daytime Running Lamps
LO BEAM RELAY/HID MINI-OPT Low-Beam HID Headlamps (Option)
HDLP WASH RELAY MINI-OPT Headlamp Washer Motor (Option)
CIGAR RELAY MINI Cigarette Lighter (Option)
BLOWER RELAY MINI Front Blower
FOG LAMP RELAY MICRO Fog Lamps
MAIN RELAY MICRO Powertrain/ECM
STARTER RELAY MINI Starter Solenoid
CMP CLU RELAY MICRO Compressor Clutch
IGN-1 RELAY MICRO Ignition Switch (ON)

Passenger compartment

Fuse Box Location

Two fuse boxes are located under the rear seat.
Fuses and relays Cadillac CTS (2003-2007)

To remove the rear seat cushion, do the following:

  1. Pull up on the front of the cushion to release the front hooks;
  2. Pull the cushion up and out toward the front of the vehicle;
  3. Slide the cushion out one of the rear doors and set it aside.

Fuse box diagram (Driver’s Side)

Fuses and relays Cadillac CTS (2003-2007)

Assignment of the fuses and relays in the Rear Underseat Fuse Block (Driver’s Side)

Name Description
Fuses
L FRT HTD SEAT MOD Driver’s Heated Seat Module
MEM/ADAPT SEAT Driver’s Power Seat Switch, Memory Seat Module
TRUNK DR RELEASE Trunk Release Motor
REVERSE LAMP ISRVM (Inside Rearview Mirror), License Plate Lamp Assembly
SPARE Not Used
POSITION LAMP Taillamp Assemblies, Front Position Lamp Assemblies
AUDIO Radio, OnStar Module
REAR DR MOD Rear Door Modules
BAS Taillamps, Center High-Mounted Stoplamp, Flasher Module, ABS Module, Trailer Lamps
DRIVER DR MOD Driver’s Door Module
HDLP LEVELING Headlamp Leveling System Chassis Sensors (Export Only)
EBCM EBCM (Electronic Brake Control Module)
CCP CCP (Climate Control Panel)
IGN 3 Heated Seat Modules, Air Inlet Motor, Shifter Assembly
J-case fuses
AMP Audio Amplifier
PUSHER FAN Pusher Fan (Export Only)
Circuit Breakers
SEAT C/B Power Seat Switches, Memory Seat Module
Relays
BAS RELAY MINI Brake Apply Sensor
SPARE Not Used
PUSHER FAN Pusher Fan (Export Only)
L POSITION RELAY MICRO Driver’s Side Position Lamp
R POSITION RELAY MICRO Passenger”s Side Position Lamp
IGN 3 RELAY MICRO Heated Seat Modules, Air Inlet Motor, Shifter Assembly
STANDING LAMP RLY MICRO Control for Position Lamp Relays
TRK DR REL SOL RELAY MICRO Trunk Release Motor
REV LAMP RELAY MICRO ISRVM (Inside Rearview Mirror), License Plate Lamp Assembly

Fuse box diagram (Passenger’s Side)

2003-2004Fuses and relays Cadillac CTS (2003-2007)

2005-2007Fuses and relays Cadillac CTS (2003-2007)

Assignment of the fuses and relays in the Rear Underseat Fuse Block (Passenger’s Side)

Name Description
Fuses
TRUNK DIODE Trunk Lamp
INTERIOR LAMP Hush Panel Lamps, Puddle Lamps, Overhead Courtesy Lamp Assembly
PSGR DR MOD Right Front Passenger Door Module
RIM 2003-2004: RIM (Rear Integration Module), Ignition Switch, Key Lock Cylinder
2005-2007: ISRVM (Inside Rearview Mirror), Power Sounder, RIM
RIM/IGN SW RIM (Rear Integration Module), Ignition Switch, Key Lock Cylinder
REAR FOG LAMP Rear Fog Lamps (Export Only)
SPARE Not Used
NAV TV Tuner Assembly (Export Only), VICS (Vehicle Information Communication System) Module (Export Only)
AIR BAG SDM (Sensing Diagnostic Module)
SPARE Not Used
POWER SOUNDER Power Sounder, Inclination Sensor
ABS Anti-Lock Brake System
TRUNK LAMP Trunk Lamp
FUEL PUMP MTR Fuel Pump Motor
AFTERBOIL Afterboil Heater Pump
R FRT HTD SEAT MOD Passenger’s Side Heated Seat Module
SPARE Not Used
SIR SDM (Sensing Diagnostic Module)
RIM ISRVM (Inside Rearview Mirror), Power Sounder, RIM, Passive Trunk Release Sensor
CANISTER VENT Canister Vent Solenoid
SPARE Not Used
Circuit Breakers
DR MOD PWR C/B Door Modules
J-Case fuses
REAR DEFOG Rear Window Defogger Element
SUNROOF MOD Power Sunroof Module
Relays
RAP RELAY MINI Retained Accessory Power
SPARE Not Used
REAR DEFOG RELAY MINI Rear Window Defogger
SPARE Not Used
AFTER BOIL MICRO Afterboil Heater Pump
INT LAMP RELAY MICRO Hush Panel Lamps, Puddle Lamps, Overhead Courtesy Lamp Assembly
IGN 1 RELAY MICRO Ignition Switch
REAR FOG LAMP RLY MICRO Rear Fog Lamps (Export Only)
FUEL PUMP MOTOR RLY MICRO Fuel Pump Motor

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