Wiring Diagram Cluster
1990 Volkswagen Passat Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
48
Variant Used
Passat L4-1984cc 2.0L DOHC (9A)
Total Vehicle Diagrams
622
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 1990 Volkswagen Passat 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.
Open interactive browser →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.Horn — Diagram Information and Instructions > How to Find the Correct Wiring Diagram, Important Stuff !Lighting and HornsOpen2.Horn — Diagram Information and Instructions > How to Read Displayed Page of Wiring Diagram, Important Stuff !Lighting and HornsOpen3.Horn — Diagram Information and Instructions > Symbols Used In Wiring DiagramsLighting and HornsOpen4.Horn — Diagram Information and Instructions > Understanding Track Style Wiring Diagrams, Important Stuff !Lighting and HornsOpen5.Horn — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen6.Horn — Diagram Information and Instructions > Wire Size ConversionLighting and HornsOpen7.Horn — Diagram Information and Instructions > Wiring Diagram Circuit IdentificationLighting and HornsOpen8.Horn — Electrical DiagramsLighting and HornsOpen9.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen10.Electrical Diagrams > Lighting and Horns > Brake LampGeneralOpen11.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Ash Tray LampGeneralOpen12.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > System DiagramGeneralOpen13.Electrical Diagrams > Lighting and Horns > Daytime Running LampGeneralOpen14.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Hazard Flasher RelayGeneralOpen15.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > System DiagramGeneralOpen16.Electrical Diagrams > Lighting and Horns > HeadlampGeneralOpen17.Electrical Diagrams > Lighting and Horns > Horn > Horn RelayGeneralOpen18.Electrical Diagrams > Lighting and Horns > Horn > System DiagramGeneralOpen19.Electrical Diagrams > Lighting and Horns > License Plate LampGeneralOpen20.Electrical Diagrams > Lighting and Horns > System DiagramGeneralOpen21.Electrical Diagrams > Lighting and Horns > Tail LampGeneralOpen22.Electrical Diagrams > Lighting and Horns > Turn SignalsGeneralOpen23.Electrical Diagrams > Locks > Power Locks > Power Door Lock ActuatorGeneralOpen24.Electrical Diagrams > Locks > Power Locks > Power Door Lock Control ModuleGeneralOpen25.Backup Lamp — Diagram Information and Instructions > How to Find the Correct Wiring Diagram, Important Stuff !Lighting and HornsOpen26.Backup Lamp — Diagram Information and Instructions > How to Read Displayed Page of Wiring Diagram, Important Stuff !Lighting and HornsOpen27.Backup Lamp — Diagram Information and Instructions > Symbols Used In Wiring DiagramsLighting and HornsOpen28.Backup Lamp — Diagram Information and Instructions > Understanding Track Style Wiring Diagrams, Important Stuff !Lighting and HornsOpen29.Backup Lamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen30.Backup Lamp — Diagram Information and Instructions > Wire Size ConversionLighting and HornsOpen31.Backup Lamp — Diagram Information and Instructions > Wiring Diagram Circuit IdentificationLighting and HornsOpen32.Backup Lamp — Electrical DiagramsLighting and HornsOpen33.Courtesy Lamp — Diagram Information and Instructions > How to Find the Correct Wiring Diagram, Important Stuff !Lighting and HornsOpen34.Courtesy Lamp — Diagram Information and Instructions > How to Read Displayed Page of Wiring Diagram, Important Stuff !Lighting and HornsOpen35.Courtesy Lamp — Diagram Information and Instructions > Symbols Used In Wiring DiagramsLighting and HornsOpen36.Courtesy Lamp — Diagram Information and Instructions > Understanding Track Style Wiring Diagrams, Important Stuff !Lighting and HornsOpen37.Courtesy Lamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen38.Courtesy Lamp — Diagram Information and Instructions > Wire Size ConversionLighting and HornsOpen39.Courtesy Lamp — Diagram Information and Instructions > Wiring Diagram Circuit IdentificationLighting and HornsOpen40.Courtesy Lamp — Electrical DiagramsLighting and HornsOpen41.Daytime Running Lamp — Diagram Information and Instructions > How to Find the Correct Wiring Diagram, Important Stuff !Lighting and HornsOpen42.Daytime Running Lamp — Diagram Information and Instructions > How to Read Displayed Page of Wiring Diagram, Important Stuff !Lighting and HornsOpen43.Daytime Running Lamp — Diagram Information and Instructions > Symbols Used In Wiring DiagramsLighting and HornsOpen44.Daytime Running Lamp — Diagram Information and Instructions > Understanding Track Style Wiring Diagrams, Important Stuff !Lighting and HornsOpen45.Daytime Running Lamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen46.Daytime Running Lamp — Diagram Information and Instructions > Wire Size ConversionLighting and HornsOpen47.Daytime Running Lamp — Diagram Information and Instructions > Wiring Diagram Circuit IdentificationLighting and HornsOpen48.Daytime Running Lamp — Electrical DiagramsLighting and HornsOpen
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