Underhood Fuse Block Diagram for 2007 Cadillac Escalade
Underhood Fuse Block Diagram for 2007 Cadillac Escalade

2007 Cadillac Escalade OBD2 Fuse Location: A Detailed Guide

Understanding the fuse box locations and diagrams in your 2007 Cadillac Escalade is crucial for diagnosing and resolving electrical issues. Fuses protect your vehicle’s electrical circuits from overloads, and knowing their locations can save you time and money on repairs. While the term “OBD2 fuse” isn’t always explicitly labeled, fuses are integral to the operation of the On-Board Diagnostics system. This guide will walk you through the fuse box locations in your 2007 Cadillac Escalade and help you identify fuses related to the OBD2 system and other vital components.

Locating the Fuse Boxes in Your 2007 Cadillac Escalade

The 2007 Cadillac Escalade is equipped with three distinct fuse boxes, each serving different circuits throughout the vehicle. These are strategically placed for accessibility:

Underhood Fuse Box

The primary fuse box is located under the hood of your Escalade. It’s typically found on the driver’s side of the engine compartment, near the battery. This box houses fuses and relays that protect critical engine and powertrain components, as well as some major vehicle systems.

Type Description
Fuse MINI 30A 1 Not Used
Fuse MINI 30A 2 Electronic Stability Suspensión Control, Automatic Level Control Exhaust
Fuse MINI 10A 3 Left Trailer Stop/Turn Lamp
Fuse MINI 15A 4 Engine Controls
Fuse MINI 15A 5 Engine Control Module, Throttle Control
Fuse MINI 10A 6 Right Trailer Stop/Turn Lamp
Fuse MINI 15A 7 Front Washer
Fuse MINI 10A 8 Oxygen Sensors
Fuse MINI 25A 9 Anti-lock Brakes System 2
Fuse MINI 10A 10 Trailer Back-up Lamps
Fuse MINI 20A 11 Driver’s High Intensity Discharge Lamp View problems with the headlight fuse…
Fuse MINI 10A 12 Engine Control Module (Battery)
Fuse MINI 20A 13 Fuel Injectors, Ignition Coils (Right Side)
Fuse MINI 10A 14 Transmission Control Module (Battery)
Fuse MINI 10A 15 Vehicle Back-up Lamps
Fuse MINI 20A 16 Passenger’s Side High Intensity Discharge Lamp View problems with the headlight fuse…
Fuse MINI 10A 17 Air Conditioning Compressor View problems with the air conditioning fuse…
Fuse MINI 10A 18 Oxygen Sensors
Fuse MINI 15A 19 Transmission Controls (Ignition)
Fuse MINI 20A 20 Fuel Pump View problems with the fuel pump fuse…
Fuse MINI 20A 21 Not Used
Fuse MINI 15A 22 Rear Washer
Fuse MINI 20A 23 Fuel Injectors, Ignition Coils (Left Side)
Fuse MINI 15A 24 Trailer Park Lamps
Fuse MINI 15A 25 Driver’s Side Park Lamps
Fuse MINI 15A 26 Passenger’s Side Park Lamps
Fuse MINI 15A 27 Fog Lamps View problems with the fog light fuse…
Fuse MINI 15A 28 Horn View problems with the horn fuse…
Fuse MINI 10A 29 Passenger’s Side High-Beam Headlamp Solenoid
Fuse MINI 15A 30 Daytime Running Lamps View problems with the headlight fuse…
Fuse MINI 10A 31 Driver’s Side High-Beam Headlamp Solenoid
Fuse MINI 15A 32 Not Used
Fuse MINI 30A 33 Sunroof View problems with the sunroof fuse…
Fuse MINI 2A 34 Key Ignition System, Theft Deterrent System
Fuse MINI 25A 35 Windshield Wiper
Fuse MINI 30A 36 SEO B2 Upfitter Usage (Battery)
Fuse MINI 15A 37 Electric Adjustable Pedals
Fuse MINI 10A 38 Climate Controls (Battery)
Fuse MINI 10A 39 Airbag System (Ignition) View problems with the starter fuse…
Fuse MINI 30A 40 Amplifier
Fuse MINI 15A 41 Audio System View problems with the radio fuse…
Fuse MINI 15A 42 Not Used
Fuse MINI 10A 43 Miscellaneous (Ignition), Rear Vision Camera [If Equipped], Cooled Seats, Cruise Control
Fuse MINI 15A 44 Liftgate Release
Fuse MINI 15A 45 OnStar, Rear Seat Entertainment Display
Fuse MINI 10A 46 Instrument Panel Cluster
Fuse MINI 15A 47 Not Used
Fuse MINI 10A 48 Heated Steering Wheel
Fuse MINI 10A 49 Auxiliary Climate Control (Ignition), Compass-Temperature Mirror
Fuse MINI 30A 50 Rear Defogger
Fuse MINI 15A 51 Airbag System (Battery)
Fuse MINI 15A 52 SEO B1 Upfitter Usage (Battery)
Fuse MINI 20A 53 Cigarette Lighter, Auxiliary Power Outlet View problems with the cigarette lighter fuse…
Fuse MINI 10A 54 Automatic Level Control Compressor Relay, SEO Upfitter Usage
Fuse MINI 10A 55 Climate Controls (Ignition) View problems with the starter fuse…
Fuse MINI 15A 56 Engine Control Module, Secondary Fuel Pump (Ignition)
Fuse FMX/JCase 40A 60 Cooling Fan 1 View problems with the cooling fan fuse…
Fuse FMX/JCase 40A 61 Automatic Level Control Compressor
Fuse FMX/JCase 60A 62 Not Used
Fuse FMX/JCase 40A 63 Cooling Fan 2 View problems with the cooling fan fuse…
Fuse FMX/JCase 40A 64 Anti-lock Brake System 1
Fuse FMX/JCase 40A 65 Starter View problems with the starter fuse…
Fuse FMX/JCase 30A 66 Stud 2 (Trailer Brakes)
Fuse FMX/JCase 60A 67 Left Bussed Electrical Center 1
Fuse FMX/JCase 30A 68 Electric Running Boards
Fuse FMX/JCase 60A 69 Heated Windshield Washer System
Fuse FMX/JCase 30A 70 Not Used
Fuse FMX/JCase 40A 71 Stud 1 (Trailer Connector Battery Power)
Fuse FMX/JCase 60A 72 Mid-Bussed Electrical Center 1
Fuse FMX/JCase 40A 73 Climate Control Blower
Fuse FMX/JCase 30A 74 Power Liftgate Module
Fuse FMX/JCase 60A 75 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 View problems with the air conditioning relay…
Relay STRTR Starter View problems with the starter relay…
Relay PWR/TRN Powertrain
Relay FUEL PMP Fuel Pump View problems with the fuel pump relay…
Relay PRK LAMP Parking Lamps
Relay REAR DEFOG Rear Defogger
Relay RUN/CRANK Switched Power

Instrument Panel Fuse Box

The second fuse box is located inside the Escalade, within the instrument panel. Its precise location is usually under the dashboard on the driver’s side. This fuse box primarily manages circuits for interior components, including power windows, lighting, and the instrument cluster.

Type Description
Circuit breaker LT DR_CB Driver’s Side Power Window Circuit Breaker
Fuse MINI 20A REAR SEAT Rear Seats
Fuse MINI 20A AUX PWR2 Rear Cargo Area Power Outlets
Fuse MINI 2A SWC BKLT Steering Wheel Controls Backlight
Fuse MINI 15A DDM Driver Door Module
Fuse MINI 15A CTSY Dome Lamps, Driver’s Side Turn Signal
Fuse MINI 15A LT STOP TRN Driver’s Side Turn Signal, Stoplamp View problems with the brake light fuse…
Fuse MINI 10A DIM Instrument Panel Back Lighting
Fuse MINI 15A RT STOP TRN Passenger’s Side Turn Signal, Stoplamp View problems with the brake light fuse…
Fuse MINI 10A BCM Body Control Module
Fuse MINI 15A UNLCK2 Power Door Lock 2 (Unlock Feature)
Fuse MINI 15A LCK2 Power Door Lock 2 (Lock Feature)
Fuse MINI 15A STOP LAMPS Stoplamps, Center-High Mounted Stoplamp View problems with the brake light fuse…
Fuse MINI 30A REAR HVAC Rear Climate Controls
Fuse MINI 15A PDM Passenger Door Module, Universal Home Remote System
Fuse MINI 20A AUX PWR Accessory Power Outlets View problems with the cigarette lighter fuse…
Fuse MINI 10A IS LPS Interior Lamps
Fuse MINI 15A UNLCK1 Power Door Lock 1 (Unlock Feature)
Fuse MINI 10A OBS DET Ultrasonic Rear Parking Assist, Power Liftgate
Fuse MINI 15A LCK1 Power Door Lock 1 (Lock Feature)
Fuse MINI 25A REAR WPR Rear Wiper
Fuse MINI 30A COOLED SEATS Cooled Seats
Fuse MINI 10A DSM Driver Seat Module, Remote Keyless Entry System
Connector LT DR Driver’s Door Harness Connection
Connector BODY1 Harness Connector
Connector BODY2 Harness Connector

Center Instrument Panel Fuse Block

The third fuse box in the 2007 Escalade is located in the center instrument panel. This is often accessible from the passenger side footwell or behind the central console. This box tends to manage fuses for convenience features and some body control functions.

Type Description
Connector BODY 2 Body Harness Connector 2
Connector BODY 1 Body Harness Connector 1
Connector BODY 3 Body Harness Connector 3
Connector HEADLINER 3 Headliner Harness Connector 3
Connector HEADLINER 2 Headliner Harness Connector 2
Connector HEADLINER 1 Headliner Harness Connector 1
Connector SEO/UPFITTER Special Equipment Option Upfitter Harness Connector
Circuit breaker ATO CB1 Passenger’s Side Power Window Circuit Breaker
Circuit breaker ATO CB2 Passenger’s Seat Circuit Breaker
Circuit breaker ATO CB3 Driver’s Seat Circuit Breaker
Connector CONNECTOR 3 Brake Clutch Harness Connector

Identifying Fuses Related to OBD2 Functionality

While none of the fuses are explicitly labeled “OBD2,” several fuses are critical for the operation of the systems that the OBD2 port relies on. If you’re experiencing issues with your OBD2 scanner connecting or retrieving data, check these fuses in the Underhood Fuse Box:

  • Fuse 5 (15A): Engine Control Module, Throttle Control: This fuse powers the Engine Control Module (ECM), a central computer that communicates diagnostic information through the OBD2 port. A blown fuse here can disrupt OBD2 communication.
  • Fuse 12 (10A): Engine Control Module (Battery): This provides constant battery power to the ECM, which is essential for memory functions and potentially OBD2 readiness tests.
  • Fuse 14 (10A): Transmission Control Module (Battery): The Transmission Control Module (TCM) also communicates diagnostic data through the OBD2 port. A problem here could affect transmission-related diagnostic readings.
  • Fuse 56 (15A): Engine Control Module, Secondary Fuel Pump (Ignition): This fuse, while also for the fuel pump, is linked to the ECM and its ignition-related functions, which could impact OBD2 data accessibility.

It’s also worth checking Fuse 46 (10A) Instrument Panel Cluster in the Underhood Fuse Box. While primarily for the instrument cluster, issues with the cluster can sometimes indirectly affect diagnostic communication.

Important Note: Always refer to your 2007 Cadillac Escalade owner’s manual for the most accurate fuse box diagrams and fuse designations. Fuse layouts can sometimes vary slightly based on specific vehicle options and production dates.

By understanding the fuse box locations and the fuses related to engine and control modules, you can effectively troubleshoot potential OBD2 communication issues and other electrical problems in your 2007 Cadillac Escalade. Remember to replace any blown fuses with the correct amperage rating to ensure proper circuit protection.

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