Wiring Diagram Cluster
1985 Pontiac Fiero Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
47
Variant Used
Fiero L4-151 2.5L
Total Vehicle Diagrams
276
From Diagram To Fix
Use this wiring page as the jump point, not the dead end
Open the exact diagram, then move directly into the vehicle hub, the repair most likely tied to this system, or the code cluster that usually shows up with it.
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Vehicle Repair Hub
Step out of raw diagrams and into the full 1985 Pontiac Fiero hub with repairs, specs, codes, and other systems already tied to this car.
View vehicle repair hub →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.
1985 Pontiac Fiero 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 →Top Body Electrical Diagram Paths
1.Electrical Diagrams > Lighting and Horns > System Diagram > Cigar Lighter, Clock, Interior, Trunk & Underhood LampsGeneralOpen2.Electrical Diagrams > Cigar Lighter, Clock, Interior, Trunk & Underhood LampsLighting and HornsOpen3.Components > Motors > Door Lock MotorsGeneralOpen4.Components > Relays > Door Lock Relay AssemblyGeneralOpen5.Components > Relays > Trunk Release RelayGeneralOpen6.Components > Solenoids > Trunk Release SolenoidGeneralOpen7.Components > Switches > Door Lock SwitchesGeneralOpen8.Electrical Diagrams > Door/Trunk Ajar Indicator/LampGeneralOpen9.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen10.Electrical Diagrams > Lighting and Horns > Brake LampGeneralOpen11.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Part 1 of 2GeneralOpen12.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Part 2 of 2GeneralOpen13.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp CoverGeneralOpen14.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp MotorGeneralOpen15.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Part 1 of 2GeneralOpen16.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Part 2 of 2GeneralOpen17.Electrical Diagrams > Lighting and Horns > Headlamp > System DiagramGeneralOpen18.Electrical Diagrams > Lighting and Horns > HornGeneralOpen19.Electrical Diagrams > Lighting and Horns > License Plate LampGeneralOpen20.Electrical Diagrams > Lighting and Horns > Marker Lamp > Front Marker, Hazard, Park, Stop & Turn > Part 1 of 2GeneralOpen21.Electrical Diagrams > Lighting and Horns > Marker Lamp > Front Marker, Hazard, Park, Stop & Turn > Part 2 of 2GeneralOpen22.Electrical Diagrams > Lighting and Horns > Marker Lamp > License Plate, Rear Marker & Tail LampsGeneralOpen23.Electrical Diagrams > Lighting and Horns > Parking LampGeneralOpen24.Electrical Diagrams > Lighting and Horns > System Diagram > Console & Instrument Panel Lights > Part 1 of 2GeneralOpen25.Electrical Diagrams > Lighting and Horns > System Diagram > Console & Instrument Panel Lights > Part 2 of 2GeneralOpen26.Electrical Diagrams > Lighting and Horns > Tail LampGeneralOpen27.Electrical Diagrams > Lighting and Horns > Turn Signals > Part 1 of 2GeneralOpen28.Electrical Diagrams > Lighting and Horns > Turn Signals > Part 2 of 2GeneralOpen29.Electrical Diagrams > Trunk / Liftgate Solenoid > With Automatic TransaxleGeneralOpen30.Electrical Diagrams > Trunk / Liftgate Solenoid > With Manual TransaxleGeneralOpen31.Backup Lamp — Diagram Information and InstructionsLighting and HornsOpen32.Backup Lamp — Electrical DiagramsLighting and HornsOpen33.Diagram Information and InstructionsLighting and HornsOpen34.Electrical Diagrams > Console & Instrument Panel Lights > Part 1 of 2Lighting and HornsOpen35.Electrical Diagrams > Console & Instrument Panel Lights > Part 2 of 2Lighting and HornsOpen36.Hazard Warning Lamps — Diagram Information and InstructionsLighting and HornsOpen37.Hazard Warning Lamps — Electrical Diagrams > Part 1 of 2Lighting and HornsOpen38.Hazard Warning Lamps — Electrical Diagrams > Part 2 of 2Lighting and HornsOpen39.Headlamp — Diagram Information and InstructionsLighting and HornsOpen40.Headlamp — Electrical DiagramsLighting and HornsOpen41.Locks > Power Locks — Diagram Information and InstructionsBody and FrameOpen42.Locks > Power Locks — Electrical DiagramsBody and FrameOpen43.Tail Lamp — Diagram Information and InstructionsLighting and HornsOpen44.Tail Lamp — Electrical DiagramsLighting and HornsOpen45.Turn Signals — Diagram Information and InstructionsLighting and HornsOpen46.Turn Signals — Electrical Diagrams > Part 1 of 2Lighting and HornsOpen47.Turn Signals — Electrical Diagrams > Part 2 of 2Lighting and HornsOpen
Exact Vehicle Hub
Browse →OEM Manual Evidence
Browse →1985 Pontiac Fiero A L L Diagnostic Trouble Codes ( DTC )OEM Manual
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1985 Pontiac Fiero A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1985 Pontiac Firebird V8-305 5.0L Service Manual | Operation CHARM Operation CHARM : Car repair ma...
Likely Trouble Codes for This System
Browse →More Fiero Wiring Pages
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