Understanding the fuse box in your 2007 Cadillac Escalade ESV is crucial for maintaining its electrical system. Fuses protect your vehicle’s circuits from overloads, preventing potential damage to sensitive components. If you’re experiencing electrical issues in your Escalade ESV, checking the fuses should be one of your first steps. This guide provides a detailed look at the fuse box locations and diagrams for your 2007 Cadillac Escalade ESV, focusing on aspects relevant to OBD2 diagnostics and general electrical troubleshooting.
Your 2007 Cadillac Escalade ESV is equipped with not one, but three distinct fuse boxes. Knowing the location and function of each is key to effectively diagnosing and resolving electrical problems. Let’s explore each of these fuse boxes in detail.
Underhood Fuse Block Diagram
The primary fuse box is located under the hood of your Cadillac Escalade ESV. This block houses fuses and relays that protect critical engine and vehicle systems.
2007 Cadillac Escalade Underhood Fuse Box Diagram
Here is a breakdown of the fuses and relays within the Underhood Fuse Block:
| Fuse Number | Type | Amperage | Description |
|---|---|---|---|
| 1 | MINI | 30A | Not Used |
| 2 | MINI | 30A | Electronic Stability Suspension Control, Automatic Level Control Exhaust |
| 3 | MINI | 10A | Left Trailer Stop/Turn Lamp |
| 4 | MINI | 15A | Engine Controls |
| 5 | MINI | 15A | Engine Control Module, Throttle Control |
| 6 | MINI | 10A | Right Trailer Stop/Turn Lamp |
| 7 | MINI | 15A | Front Washer |
| 8 | MINI | 10A | Oxygen Sensors |
| 9 | MINI | 25A | Anti-lock Brakes System 2 |
| 10 | MINI | 10A | Trailer Back-up Lamps |
| 11 | MINI | 20A | Driver’s High Intensity Discharge Lamp |
| 12 | MINI | 10A | Engine Control Module (Battery) |
| 13 | MINI | 20A | Fuel Injectors, Ignition Coils (Right Side) |
| 14 | MINI | 10A | Transmission Control Module (Battery) |
| 15 | MINI | 10A | Vehicle Back-up Lamps |
| 16 | MINI | 20A | Passenger’s Side High Intensity Discharge Lamp |
| 17 | MINI | 10A | Air Conditioning Compressor |
| 18 | MINI | 10A | Oxygen Sensors |
| 19 | MINI | 15A | Transmission Controls (Ignition) |
| 20 | MINI | 20A | Fuel Pump |
| 21 | MINI | 20A | Not Used |
| 22 | MINI | 15A | Rear Washer |
| 23 | MINI | 20A | Fuel Injectors, Ignition Coils (Left Side) |
| 24 | MINI | 15A | Trailer Park Lamps |
| 25 | MINI | 15A | Driver’s Side Park Lamps |
| 26 | MINI | 15A | Passenger’s Side Park Lamps |
| 27 | MINI | 15A | Fog Lamps |
| 28 | MINI | 15A | Horn |
| 29 | MINI | 10A | Passenger’s Side High-Beam Headlamp Solenoid |
| 30 | MINI | 15A | Daytime Running Lamps |
| 31 | MINI | 10A | Driver’s Side High-Beam Headlamp Solenoid |
| 32 | MINI | 15A | Not Used |
| 33 | MINI | 30A | Sunroof |
| 34 | MINI | 2A | Key Ignition System, Theft Deterrent System |
| 35 | MINI | 25A | Windshield Wiper |
| 36 | MINI | 30A | SEO B2 Upfitter Usage (Battery) |
| 37 | MINI | 15A | Electric Adjustable Pedals |
| 38 | MINI | 10A | Climate Controls (Battery) |
| 39 | MINI | 10A | Airbag System (Ignition) |
| 40 | MINI | 30A | Amplifier |
| 41 | MINI | 15A | Audio System |
| 42 | MINI | 15A | Not Used |
| 43 | MINI | 10A | Miscellaneous (Ignition), Rear Vision Camera [If Equipped], Cooled Seats, Cruise Control |
| 44 | MINI | 15A | Liftgate Release |
| 45 | MINI | 15A | OnStar, Rear Seat Entertainment Display |
| 46 | MINI | 10A | Instrument Panel Cluster |
| 47 | MINI | 15A | Not Used |
| 48 | MINI | 10A | Heated Steering Wheel |
| 49 | MINI | 10A | Auxiliary Climate Control (Ignition), Compass-Temperature Mirror |
| 50 | MINI | 30A | Rear Defogger |
| 51 | MINI | 15A | Airbag System (Battery) |
| 52 | MINI | 15A | SEO B1 Upfitter Usage (Battery) |
| 53 | MINI | 20A | Cigarette Lighter, Auxiliary Power Outlet |
| 54 | MINI | 10A | Automatic Level Control Compressor Relay, SEO Upfitter Usage |
| 55 | MINI | 10A | Climate Controls (Ignition) |
| 56 | MINI | 15A | Engine Control Module, Secondary Fuel Pump (Ignition) |
| 60 | FMX/JCase | 40A | Cooling Fan 1 |
| 61 | FMX/JCase | 40A | Automatic Level Control Compressor |
| 62 | FMX/JCase | 60A | Not Used |
| 63 | FMX/JCase | 40A | Cooling Fan 2 |
| 64 | FMX/JCase | 40A | Anti-lock Brake System 1 |
| 65 | FMX/JCase | 40A | Starter |
| 66 | FMX/JCase | 30A | Stud 2 (Trailer Brakes) |
| 67 | FMX/JCase | 60A | Left Bussed Electrical Center 1 |
| 68 | FMX/JCase | 30A | Electric Running Boards |
| 69 | FMX/JCase | 60A | Heated Windshield Washer System |
| 70 | FMX/JCase | 30A | Not Used |
| 71 | FMX/JCase | 40A | Stud 1 (Trailer Connector Battery Power) |
| 72 | FMX/JCase | 60A | Mid-Bussed Electrical Center 1 |
| 73 | FMX/JCase | 40A | Climate Control Blower |
| 74 | FMX/JCase | 30A | Power Liftgate Module |
| 75 | FMX/JCase | 60A | Left Bussed Electrical Center 2 |
| Relay | FAN HI Cooling Fan High Speed | ||
| Relay | FAN LO Cooling Fan Low Speed | ||
| Relay | FAN CNTRL Cooling Fan Control | ||
| Relay | HDLP LO/HID Hi Intensity Discharge Headlamp | ||
| Relay | FOG LAMP Front Fog Lamps | ||
| Relay | A/C CMPRSR Air Conditioning Compressor | ||
| Relay | STRTR Starter | ||
| Relay | PWR/TRN Powertrain | ||
| Relay | FUEL PMP Fuel Pump | ||
| Relay | PRK LAMP Parking Lamps | ||
| Relay | REAR DEFOG Rear Defogger | ||
| Relay | RUN/CRANK Switched Power |
Instrument Panel Fuse Block Diagram
The second fuse box is located inside the vehicle, specifically within the instrument panel. This fuse block controls interior electrical functions and convenience features.
2007 Cadillac Escalade Instrument Panel Fuse Box Diagram
Here’s a listing of the fuses and circuit breakers in the Instrument Panel Fuse Block:
| Fuse Number | Type | Amperage | Description |
|---|---|---|---|
| LT DR_CB | Circuit breaker | Driver’s Side Power Window Circuit Breaker | |
| REAR SEAT | MINI | 20A | Rear Seats |
| AUX PWR2 | MINI | 20A | Rear Cargo Area Power Outlets |
| SWC BKLT | MINI | 2A | Steering Wheel Controls Backlight |
| DDM | MINI | 15A | Driver Door Module |
| CTSY | MINI | 15A | Dome Lamps, Driver’s Side Turn Signal |
| LT STOP TRN | MINI | 15A | Driver’s Side Turn Signal, Stoplamp |
| DIM | MINI | 10A | Instrument Panel Back Lighting |
| RT STOP TRN | MINI | 15A | Passenger’s Side Turn Signal, Stoplamp |
| BCM | MINI | 10A | Body Control Module |
| UNLCK2 | MINI | 15A | Power Door Lock 2 (Unlock Feature) |
| LCK2 | MINI | 15A | Power Door Lock 2 (Lock Feature) |
| STOP LAMPS | MINI | 15A | Stoplamps, Center-High Mounted Stoplamp |
| REAR HVAC | MINI | 30A | Rear Climate Controls |
| PDM | MINI | 15A | Passenger Door Module, Universal Home Remote System |
| AUX PWR | MINI | 20A | Accessory Power Outlets |
| IS LPS | MINI | 10A | Interior Lamps |
| UNLCK1 | MINI | 15A | Power Door Lock 1 (Unlock Feature) |
| OBS DET | MINI | 10A | Ultrasonic Rear Parking Assist, Power Liftgate |
| LCK1 | MINI | 15A | Power Door Lock 1 (Lock Feature) |
| REAR WPR | MINI | 25A | Rear Wiper |
| COOLED SEATS | MINI | 30A | Cooled Seats |
| DSM | MINI | 10A | Driver Seat Module, Remote Keyless Entry System |
| LT DR | Connector | Driver’s Door Harness Connection | |
| BODY1 | Connector | Harness Connector | |
| BODY2 | Connector | Harness Connector |
Center Instrument Panel Fuse Block Diagram
The third fuse box, the Center Instrument Panel Fuse Block, is also located within the interior, often accessible from the passenger side.
2007 Cadillac Escalade Center Instrument Panel Fuse Box Diagram
Below is the diagram and fuse listing for the Center Instrument Panel Fuse Block:
| Fuse Number | Type | Amperage | Description |
|---|---|---|---|
| BODY 2 | Connector | Body Harness Connector 2 | |
| BODY 1 | Connector | Body Harness Connector 1 | |
| BODY 3 | Connector | Body Harness Connector 3 | |
| HEADLINER 3 | Connector | Headliner Harness Connector 3 | |
| HEADLINER 2 | Connector | Headliner Harness Connector 2 | |
| HEADLINER 1 | Connector | Headliner Harness Connector 1 | |
| SEO/UPFITTER | Connector | Special Equipment Option Upfitter Harness Connector | |
| CB1 | Circuit breaker ATO | Passenger’s Side Power Window Circuit Breaker | |
| CB2 | Circuit breaker ATO | Passenger’s Seat Circuit Breaker | |
| CB3 | Circuit breaker ATO | Driver’s Seat Circuit Breaker | |
| CONNECTOR 3 | Connector | Brake Clutch Harness Connector |
OBD2 System and Fuses in Your 2007 Cadillac Escalade ESV
While there isn’t a specific fuse labeled “OBD2 fuse”, the On-Board Diagnostics system (OBD2) in your 2007 Cadillac Escalade ESV relies on several fuses for power and proper operation. The OBD2 port itself is typically not fused directly. However, the systems that the OBD2 port communicates with are protected by fuses.
Key fuses related to OBD2 functionality include:
- PCM/ECM Fuses: The Powertrain Control Module (PCM) or Engine Control Module (ECM) is the brain of your vehicle’s engine management system and is essential for OBD2 diagnostics. In the Underhood Fuse Block, fuses 4, 5, 12, and 56 are related to engine controls and the ECM. A blown fuse in these positions could prevent your OBD2 scanner from connecting or retrieving data.
- Instrument Panel Cluster Fuse: Fuse 46 in the Underhood Fuse Block protects the Instrument Panel Cluster. Issues with this fuse might affect communication as the instrument panel is part of the vehicle’s communication network.
- Body Control Module (BCM) Fuse: Fuse 10 in the Instrument Panel Fuse Block is for the BCM. The BCM manages various body functions and can also be involved in vehicle diagnostics.
If you are experiencing issues connecting your OBD2 scanner to your 2007 Cadillac Escalade ESV, or if you are getting error codes related to communication, checking these fuses is a good starting point.
Troubleshooting Fuse Problems
Before replacing any fuse, it’s important to understand why it blew in the first place. Fuses blow to protect circuits from excessive current. A repeatedly blown fuse indicates an underlying problem that needs to be addressed.
Steps for Troubleshooting Fuses:
- Identify the Blown Fuse: Use the diagrams provided to locate the fuse associated with the malfunctioning component.
- Visual Inspection: Remove the fuse and visually inspect it. A blown fuse will typically have a broken wire inside.
- Replace with the Correct Fuse: Always replace a blown fuse with one of the same type and amperage rating. Using a fuse with a higher amperage can overload the circuit and cause damage or even a fire.
- Test the System: After replacing the fuse, test the affected system to see if the problem is resolved.
- Investigate Further if Fuse Blows Again: If the new fuse blows immediately or shortly after replacement, there is a persistent electrical issue. This could be a short circuit, a faulty component, or an overloaded circuit. Further diagnosis by a qualified technician may be necessary.
Disclaimer: This information is intended as a general guide for 2007 Cadillac Escalade ESV fuse boxes. Always consult your vehicle’s owner’s manual for the most accurate and specific information related to your vehicle. If you are not comfortable working with automotive electrical systems, it is recommended to seek assistance from a qualified automotive technician.
By understanding the fuse box layout and the function of each fuse in your 2007 Cadillac Escalade ESV, you can effectively troubleshoot common electrical issues and maintain your vehicle’s performance. Remember to always prioritize safety and consult professional help when needed.
