Cadillac CT5 2023 Headlamp Aiming and Electrical System User Guide
Headlamp Aiming
Front Headlamp Aiming
The headlamp aim has been preset and should need no further adjustment. If the vehicle is damaged in a crash, the headlamp aim may be affected. If adjustment to the headlamps is necessary, see your dealer.
Bulb Replacement
LED Lighting
This vehicle has LED lamps. For replacement of any LED lighting assembly, 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.
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.
To check a fuse, look at the band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a fuse of identical size and rating.
Replacing a Blown Fuse
- Turn off the vehicle.
- Locate the fuse puller in the engine compartment fuse block.
- Use the fuse puller to remove the fuse from the top or side, as shown above.
- If the fuse must be replaced immediately, borrow a replacement fuse with the same amperage from the fuse block. Choose a vehicle feature that is not needed to safely operate the vehicle. Repeat Steps 2-3.
- Insert the replacement fuse into the empty slot of the blown fuse.
At the next opportunity, see your dealer to replace the blown fuse.
Headlamp Wiring
An electrical overload may cause the lamps o go on and off, or in some cases to remain off. Has 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 until the motor cools and will then restart.
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.
Danger
Fuses and circuit breakers are marked with their ampere rating. Do not exceed the specified amperage rating when replacing fuses and circuit breakers. The use of an oversized fuse or circuit breaker can result in a vehicle fire. You and others could be seriously injured or killed.
Warning
Installation or use of fuses that do not meet GM’s original fuse specifications is dangerous. The fuses could fail, and result in a fire. You or others could be injured or killed, and the vehicle could be damaged. See Accessories and Modifications 0 291 and General Information 0 291.
To check or replace a blown fuse, see Electrical System Overload 0 318.
Engine Compartment Fuse Block
The under-hood fuse block is in the engine compartment, on the driver side of the vehicle.
Caution
Do not pull the engine compartment fuse block lever, since it is intended only for service purposes. If pulled, vehicle malfunction may occur.
Caution
Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
To remove the fuse block cover, press the clips on the cover and lift it straight up.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
Fuses Usage
F1 Antilock Brake System
F2 Starter 1
Fuses Usage
F3 DC DC Transformer 1
F4 –
Fuses Usage
F5 DC DC Transformer 2
F6 Amplifier 1
F7 Front Blower
F8 Starter 3
F9 –
F10 –
F11 –
F12 Front Wiper
F13 Starter 2
F14 LED/Automatic Headlamp
Leveling
F15 Rear Wiper 1
F16 –
F17 –
F18 Automatic Headlamp
Leveling Module
F19 –
F20 –
F21 –
F22 Electronic Brake Control
Module
Fuses Usage
F23 Parking/Trailer Lamps
F24 Right Trailer Stoplamp/
Turn lamp
F25 Steering Column Lock
F26 –
F27 Left Trailer Stoplamp/
Turnlamp
F28 –
F29 –
F30 Washer Pump
F31 –
F32 –
F33 Fog Lamps
F34 Horn
F35 –
F36 Headlamp High-Beam Left
F37 Headlamp High-Beam
Right
F38 Spare
F39 Transmission Control
Module 1/Battery 1
Fuses Usage
F40 Left Rear Bus Electrical
Center/Ignition
F41 Instrument Cluster
F42 Heating, Ventilation, and
Air Conditioning/Central
Gateway Module Run
Crank
F43 Head-up Display/
Reflective Light Alert
Display
F44 Electronic Brake Control
Module Electric Brake
Booster/Run/Crank
F45 –
F46 –
F47 –
F48 Rear Wiper 2
F49 Interior Rearview Mirror/
Trailer/Rear Heated Seat
Run Crank
F50 Fuel Tank Zone Module
Run Crank
F51 Heated Steering Wheel
Fuses Usage
F52 Air Conditioning Clutch
F53 Coolant Pump
F54 –
F55 –
F56 Spare
F57 Engine Control Module/
Ignition
F58 Transmission Control
Module/Ignition
F59 Engine Control Module
Battery
F60 –
F61 O2 Sensor 1/Aeroshutter/
Mass Air Flow Sensor
F62 Engine Control
Module – Odd
F63 O2 Sensor 2
F64 Engine Control
Module – Even
F65 Engine Control Module
Powertrain 1
Fuses Usage
F66 Engine Control Module
Powertrain 2
F67 Engine Control Module
Powertrain 3
F68 –
F69 –
F70 –
F71 –
F72 –
F73 –
F74 –
F75 –
F76 –
F77 –
Relays Usage
K1 Starter 1
K2 Run/Crank
K3 Starter 3
K4 LED/Automatic
Headlamps
Relays Usage
K5 –
K6 –
K7 Engine Control Module
K8 Air Conditioning
K9 –
K10 Starter 2
Instrument Panel Fuse Block
The instrument panel fuse block is in the end of the driver side of the instrument panel.
To access the fuses, remove the end panel by gently prying with a plastic tool near each clip, beginning at the point shown.
To install the end cover, insert the tabs on the back of the cover into the slots in the instrument panel at the points shown. Align the clips with the slots in the instrument panel, and press the cover into place. The vehicle may not be equipped with all of the fuses and relays shown.
Fuses Usage
F1 Body Control Module 6
Fuses Usage
F2 Diagnostic Link/Central
Gateway Module
F3 Electric Steering
Column Lock
F4 –
F5 Logistics
F6 Heating, Ventilation and
Air Conditioning/
Humidity Sensor
F7 Body Control Module 3
F8 Park Aid/Electronic
Range Select Hybrid
F9 Front Passenger
Heated Seat
F10 Airbag/Seat Belt
F11 –
F12 Amplifier 2
F13 Body Control Module 7
F14 Driver Heated Seat
F15 Instrument Panel
Switch Bank
F16 Sunroof
Fuses Usage
F17 Body Control Module 1
F18 Instrument Cluster/
Heads-Up Display
F19 –
F20 Rear Seat Entertainment
F21 Body Control Module 4
F22 Infotainment USB Data/
Aux Jack
F23 Body Control Module 2
F24 USB Charger/Wireless
Charging
F25 Park Aid/Electronic
Transmission Range
System
F26 Communication
Integration Module
F27 Video/Night Vision
Module
F28 Heating, Ventilation,
and Air Conditioning
Display
F29 Radio
Fuses Usage
F30 Steering Wheel
Adjustment Controls
F31 Electronic Brake Control
Module Electric Brake
Booster
F32 DC AC Inverter
F33 Driver Power Seat
F34 Passenger Power Seat
F35 Battery IEC 1 Feed
F36 Electric Power Steering
F37 Rear Seat
Entertainment/USB
Charge/Wireless
Charging Module
F38 Body Control Module 8
F39 –
Circuit Breakers/
Minifuse
Usage
F40 –
F41 –
F42 Auxiliary Power Outlet
(CB)/Lighter (Minifuse)
Rear Compartment Fuse Block
The rear compartment fuse block is behind a trim panel on the driver side of the rear storage compartment.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
Fuses Usage
- Remote Function
Actuator
Fuses Usage - –
- Driver Heated Seat
- Fuel Tank Zone Module
- –
- –
- –
- –
- –
- Motor Seat Belt
Passenger - Canister Vent Solenoid
- Sunroof
- –
- –
- Passenger Heated Seat
- –
- Electronic Suspension
Control - –
- Motor Seat Belt Driver
Fuses Usage - Rear Defog
- DC to DC Transformer 2
- Driver Power Window/
Door Handle Switch - External Object
Calculating Module/Front
Camera Module/High
Definition Localization
Module/Short-Range Radar - Passenger Power
Window/Door Handle Switch - –
- Amplifier (V-Series Blackwing)
- Rear Drive Control
Module - –
- –
- DC to DC Transformer 1
Fuses Usage - Transfer Case Electronic
Control - Central Gateway
Module/Side Blind Zone
Alert - Video Processing Module
- Hands Free Closure
Release - Exterior Lighting
Module 2 - Passenger Memory Seat
Module
38 – - Right Front/Right Rear
Window - –
- –
- Amplifier
- Park Assist Module
- Driver Memory Seat
Module - OnStar
Fuses Usage - –
- –
- –
- –
- Driver Seat
- Left Front/Left Rear
Window - Passenger Seat
Relays Usage
53 –
54 –
55 Run
Cadillac Top Accessories
[amalinkspro_table id=”32446″ new-window=”on” nofollow=”on” addtocart=”off” /]
Reference Links
View Full User Guide: Cadillac CT5 2023 User Guide
Download Manuals: https://www.cadillac.com/support/vehicle/manuals-guides
