Wiring Diagram Cluster

1987 Cadillac Eldorado Body Electrical Wiring Diagram

Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.

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Matched Diagrams

48

Variant Used

Eldorado V8-252 4.1L

Total Vehicle Diagrams

424

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1987 Cadillac Eldorado A L L Diagnostic Trouble Codes ( DTC )

OEM source

Factory Manual Evidence

When there is no clean repair shortcut for this system, drop into the OEM manual sections that usually carry the authoritative test path.

1987 Cadillac Eldorado A L L Diagnostic Trouble Codes ( DTC ) →
1987 Cadillac Eldorado A L L Diagnostic Trouble Codes ( DTC )1987 Cadillac Eldorado A L L Diagnostic Trouble Codes ( DTC )1987 Cadillac Eldorado A L L Diagnostic Trouble Codes ( DTC )

Diagnostic signal

Codes Often Seen With This System

Use the code cluster when wiring faults overlap with check-engine or module-level diagnostics.

B1318: Battery Voltage Low →
U0140: Lost Communication with Body Control Module

Top Body Electrical Diagram Paths

1.Doors, Hood and Trunk > Fuel Door — Diagram Information and InstructionsBody and FrameOpen2.Doors, Hood and Trunk > Fuel Door — Electrical DiagramsBody and FrameOpen3.Horn — Diagram Information and InstructionsLighting and HornsOpen4.Horn — Electrical DiagramsLighting and HornsOpen5.Locks > Power Locks — Electrical Diagrams > With Automatic Door LocksBody and FrameOpen6.Locks > Power Locks — Electrical Diagrams > Without Automatic Door LocksBody and FrameOpen7.Antitheft and Alarm Systems — Electrical Diagrams > Less Auto Door Locks, 2 DoorAccessories and Optional EquipmentOpen8.Antitheft and Alarm Systems — Electrical Diagrams > Less Auto Door Locks, 4 DoorAccessories and Optional EquipmentOpen9.Antitheft and Alarm Systems — Electrical Diagrams > With Auto Door LocksAccessories and Optional EquipmentOpen10.Components > Miscellaneous Components > Horn Brush/Slip RingGeneralOpen11.Components > Miscellaneous Components > Trunk Lid Pull Down UnitGeneralOpen12.Components > Modules > Automatic Door Lock ModuleGeneralOpen13.Components > Modules > Body Computer ModuleGeneralOpen14.Components > Motors > Door Lock MotorsGeneralOpen15.Components > Relays > Door Lock RelayGeneralOpen16.Components > Relays > Horn RelayGeneralOpen17.Components > Switches > Door Lock Cylinder SwitchesGeneralOpen18.Components > Switches > Horn SwitchGeneralOpen19.Components > Switches > Trunk Lid Tamper SwitchGeneralOpen20.Components > Switches > Trunk Release SwitchGeneralOpen21.Connector Views > Body Control ModuleGeneralOpen22.Electrical Diagrams > Antitheft and Alarm Systems > Less Auto Door Locks, 2 DoorGeneralOpen23.Electrical Diagrams > Antitheft and Alarm Systems > Less Auto Door Locks, 4 DoorGeneralOpen24.Electrical Diagrams > Antitheft and Alarm Systems > With Auto Door LocksGeneralOpen25.Electrical Diagrams > Body Control Module (BCM)Powertrain ManagementOpen26.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen27.Electrical Diagrams > Lighting and Horns > Brake LampGeneralOpen28.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Door LampGeneralOpen29.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Glove Box LampGeneralOpen30.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > System Diagram > Part 1 of 3GeneralOpen31.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > System Diagram > Part 2 of 3GeneralOpen32.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > System Diagram > Part 3 of 3GeneralOpen33.Electrical Diagrams > Lighting and Horns > Dome Lamp > Part 1 of 3GeneralOpen34.Electrical Diagrams > Lighting and Horns > Dome Lamp > Part 2 of 3GeneralOpen35.Electrical Diagrams > Lighting and Horns > Dome Lamp > Part 3 of 3GeneralOpen36.Electrical Diagrams > Lighting and Horns > Hazard Warning LampsGeneralOpen37.Electrical Diagrams > Lighting and Horns > Headlamp > With Sentinel DimmingGeneralOpen38.Electrical Diagrams > Lighting and Horns > Headlamp > With Twilight SentinelGeneralOpen39.Electrical Diagrams > Lighting and Horns > Headlamp > Without Sentinel Dimming or Twilight SentinelGeneralOpen40.Electrical Diagrams > Lighting and Horns > HornGeneralOpen41.Electrical Diagrams > Lighting and Horns > Map Light > Part 1 of 3GeneralOpen42.Electrical Diagrams > Lighting and Horns > Map Light > Part 2 of 3GeneralOpen43.Electrical Diagrams > Lighting and Horns > Map Light > Part 3 of 3GeneralOpen44.Electrical Diagrams > Lighting and Horns > Marker Lamp > Part 1 of 3GeneralOpen45.Electrical Diagrams > Lighting and Horns > Marker Lamp > Part 2 of 3GeneralOpen46.Electrical Diagrams > Lighting and Horns > Marker Lamp > Part 3 of 3GeneralOpen47.Electrical Diagrams > Lighting and Horns > Parking Lamp > Part 1 of 3GeneralOpen48.Electrical Diagrams > Lighting and Horns > Parking Lamp > Part 2 of 3GeneralOpen

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OEM Manual Evidence

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1987 Cadillac Eldorado A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1987 Cadillac Eldorado V8-252 4.1L Service Manual | Operation CHARM Operation CHARM : Car repair m...

1987 Cadillac Eldorado A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1987 Cadillac Allante V8-252 4.1L Service Manual | Operation CHARM Operation CHARM : Car repair ma...

1987 Cadillac Eldorado A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1987 Cadillac DeVille V8-252 4.1L Service Manual | Operation CHARM Operation CHARM : Car repair ma...

1987 Cadillac Eldorado A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1987 Cadillac Fleetwood FWD V8-252 4.1L Service Manual | Operation CHARM Operation CHARM : Car rep...

Likely Trouble Codes for This System

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B1318: Battery Voltage LowCode

Body/Electrical code commonly seen during body electrical diagnosis.

U0140: Lost Communication with Body Control ModuleCode

Network/Communication code commonly seen during body electrical diagnosis.

More Eldorado Wiring Pages

Starter Wiring DiagramAlternator Wiring DiagramHeadlight Wiring DiagramA/C & Heater Wiring DiagramPower Window Wiring DiagramInstrument Cluster Wiring DiagramWiper & Washer Wiring DiagramTransmission Wiring DiagramCruise Control Wiring DiagramEngine Management Wiring Diagram

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