Wiring Diagram Cluster
1999 Pontiac Grand Prix Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
48
Variant Used
Grand Prix V6-191 3.1L VIN M SFI
Total Vehicle Diagrams
3607
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.
Keep context
Vehicle Repair Hub
Step out of raw diagrams and into the full 1999 Pontiac Grand Prix 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.
1999 Pontiac Grand Prix 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 > Interior Lights > Door LocksGeneralOpen2.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lights > Windows and Door Lock SwitchesGeneralOpen3.Electrical Diagrams > Interior Lights > Door LocksLighting and HornsOpen4.Electrical Diagrams > Interior Lights > Windows and Door Lock SwitchesLighting and HornsOpen5.Horn — Diagnostic Aids > Wiring Repairs > SIR Wiring Repairs > SIR Connector (Plastic Body and Terminal Metal Pin) RepairLighting and HornsOpen6.Locks > Keyless Entry — Diagnostic Aids > Wiring Repairs > SIR Wiring Repairs > SIR Connector (Plastic Body and Terminal Metal Pin) RepairBody and FrameOpen7.Antitheft and Alarm Systems > Keyless Entry — Diagnostic Aids > Wiring Repairs > SIR Wiring Repairs > SIR Connector (Plastic Body and Terminal Metal Pin) RepairAccessories and Optional EquipmentOpen8.Electrical Diagrams > Body and Frame > Locks > Keyless Entry > Additional InformationGeneralOpen9.Electrical Diagrams > Body and Frame > Locks > Keyless Entry > Keyless Entry SchematicsGeneralOpen10.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lights > AUTO Transaxle Control Position IND Bulb, Driver Seat Heater SWGeneralOpen11.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lights > Compartment Lamp, IP CTSY LPS, Door CTSY Warning LPSGeneralOpen12.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lights > Snshd Illu Mirrors, Rof Rail CTSY/Reading LPS, Wnshld Hdr CTSYGeneralOpen13.Electrical Diagrams > Lighting and Horns > System Diagram > Interior Lights > Steering Wheel Radio CNTRL Switches, DID, Ashtray LP, Fog LP SWGeneralOpen14.Electrical Diagrams > Powertrain Management > Computers and Control Systems > Body Control Module > Door LocksGeneralOpen15.Electrical Diagrams > Powertrain Management > Computers and Control Systems > Body Control Module > Headlamp Switch, RCDLR, RAP Relay, Horn RelayGeneralOpen16.Backup Lamp — Diagnostic Aids > Wiring Repairs > SIR Wiring Repairs > SIR Connector (Plastic Body and Terminal Metal Pin) RepairLighting and HornsOpen17.Center Mounted Brake Lamp — Diagnostic Aids > Wiring Repairs > SIR Wiring Repairs > SIR Connector (Plastic Body and Terminal Metal Pin) RepairLighting and HornsOpen18.Daytime Running Lamp — Diagnostic Aids > Wiring Repairs > SIR Wiring Repairs > SIR Connector (Plastic Body and Terminal Metal Pin) RepairLighting and HornsOpen19.Diagnostic Aids > Wiring Repairs > SIR Wiring Repairs > SIR Connector (Plastic Body and Terminal Metal Pin) RepairBody and FrameOpen20.Diagnostic Aids > Wiring Repairs > SIR Wiring Repairs > SIR Connector (Plastic Body and Terminal Metal Pin) RepairLighting and HornsOpen21.Electrical Diagrams > Interior Lights > AUTO Transaxle Control Position IND Bulb, Driver Seat Heater SWLighting and HornsOpen22.Electrical Diagrams > Interior Lights > Compartment Lamp, IP CTSY LPS, Door CTSY Warning LPSLighting and HornsOpen23.Electrical Diagrams > Interior Lights > Snshd Illu Mirrors, Rof Rail CTSY/Reading LPS, Wnshld Hdr CTSYLighting and HornsOpen24.Electrical Diagrams > Interior Lights > Steering Wheel Radio CNTRL Switches, DID, Ashtray LP, Fog LP SWLighting and HornsOpen25.Fog/Driving Lamp — Diagnostic Aids > Wiring Repairs > SIR Wiring Repairs > SIR Connector (Plastic Body and Terminal Metal Pin) RepairLighting and HornsOpen26.Headlamp — Diagnostic Aids > Wiring Repairs > SIR Wiring Repairs > SIR Connector (Plastic Body and Terminal Metal Pin) RepairLighting and HornsOpen27.Horn — Connector ViewsLighting and HornsOpen28.Horn — Diagnostic Aids > Connector Repairs > Connector Position Assurance LocksLighting and HornsOpen29.Horn — Diagnostic Aids > Connector Repairs > Pull to Seat ConnectorsLighting and HornsOpen30.Horn — Diagnostic Aids > Connector Repairs > Push to Seat ConnectorsLighting and HornsOpen31.Horn — Diagnostic Aids > Connector Repairs > Repairing Connector TerminalsLighting and HornsOpen32.Horn — Diagnostic Aids > Connector Repairs > Terminal Position Assurance LocksLighting and HornsOpen33.Horn — Diagnostic Aids > Connector Repairs > Weather Pack ConnectorsLighting and HornsOpen34.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Basic Knowledge RequiredLighting and HornsOpen35.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Intermittents and Poor Connections Diagnosis > Flat Wire (Dock and Lock) ConnectorsLighting and HornsOpen36.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Intermittents and Poor Connections Diagnosis > General InformationLighting and HornsOpen37.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Intermittents and Poor Connections Diagnosis > Round Wire ConnectorsLighting and HornsOpen38.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Intermittents and Poor Connections Diagnosis > Testing For Proper Terminal ContactLighting and HornsOpen39.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Probing Electrical ConnectorsLighting and HornsOpen40.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Symptom Diagnostic ExampleLighting and HornsOpen41.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Troubleshooting Tests > Measuring VoltageLighting and HornsOpen42.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Troubleshooting Tests > Measuring Voltage DropLighting and HornsOpen43.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Troubleshooting Tests > Testing For ContinuityLighting and HornsOpen44.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Troubleshooting Tests > Testing For Electrical IntermittentsLighting and HornsOpen45.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Troubleshooting Tests > Testing For Short to GroundLighting and HornsOpen46.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Troubleshooting Tools > Connector Test AdaptersLighting and HornsOpen47.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Troubleshooting Tools > Digital MultimeterLighting and HornsOpen48.Horn — Diagnostic Aids > General Electrical Diagnostic Procedures > Troubleshooting Tools > Short FinderLighting and HornsOpen
Exact Vehicle Hub
Browse →OEM Manual Evidence
Browse →1999 Pontiac Grand Prix A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1999 Pontiac Grand Prix V6-191 3.1L VIN M SFI Service Manual | Operation CHARM Operation CHARM : C...
1999 Pontiac Grand Prix A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1999 Pontiac Grand Prix V6-3.8L SC VIN 1 Service Manual | Operation CHARM Operation CHARM : Car re...
1999 Pontiac Grand Prix A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1999 Pontiac Grand Prix V6-3.8L VIN K Service Manual | Operation CHARM Operation CHARM : Car repai...
1999 Pontiac Grand Prix A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1999 Pontiac Grand AM L4-144 2.4L DOHC VIN T SFI Service Manual | Operation CHARM Operation CHARM...
Likely Trouble Codes for This System
Browse →More Grand Prix Wiring Pages
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