OEM Circuit Diagrams

Power Distribution
- Notes
- Under-hood Fuse/Relay Box - Fuses 1, 2, 3, 4, 6 and 19
- Under-hood Fuse/Relay Box - Fuses 5, 7, 8, 10 and 18
- Under-hood Fuse/Relay Box - Fuse 9
- Under-hood Fuse/Relay Box - Fuses 11, 12, 13, 14 and 16 and Under-dash Fuse/Relay Box - Fuses 2, 5, 15 and 16
- Under-hood Fuse/Relay Box - Fuse 20, Ignition Switch and Under-dash Fuse/Relay Box - Fuses 11 and 21
- Under-hood Fuse/Relay Box - Fuses 15 and 17
- Under-dash Fuse/Relay Box - Fuses 3 and 4
- Under-dash Fuse/Relay Box - Fuses 6, 22, 24 and 25
- Under-dash Fuse/Relay Box - Fuses 9 and 10
- Under-dash Fuse/Relay Box - Fuses 7, 8, 12, 13 and 23
- Under-dash Fuse/Relay Box - Fuse 14
- Under-dash Fuse/Relay Box - Fuses 17, 18, 19 and 20
Ground Distribution
- Notes
- G1 and G2
- G101
- G201
- G102 and G202
- G301
- G402
- G401
- G501 (Partial)
- G451
- G502
- G503
- G552
- G553, G711 and G771
- G551 and G751
Splice and Junction Connector Details
- Notes
- Illumination (Positive)
- Illumination (Negative)
- Brake Pedal Position
- Right Turn Signal
- Left Turn Signal
- Taillight Relay Control
- Headlight Relay
- Horn Relay Control
- Key-in Ignition
- Tailgate Switch Position
- Right Side Door Switch
- Left Side Door Switch
- Parking Brake Position
- Ground for Heater Control Sensors
- Power Source for PCM Sensors
- Power Source for ECM/PCM
- ECM/PCM Relays Control
- Reference Voltage for ECM/PCM Sensors (VCC2)
- Ground for ECM/PCM Sensors (SG3)
- A/T Reverse Position
- A/T Park Position
- Back-up Lights (A/T)
- Back-up Lights (M/T)
- Logic Ground
- Ground for ECM/PCM Sensors (SG1)
- Ground for ECM/PCM Sensors (SG2)
DLC (Data Link Connector)
Ignition System
Starting System
- Notes
- A/T
- M/T
Charging System
Fuel and Emissions
- Notes
- ECM/PCM Power and Ground
- MIL Circuit
- PGM-FI System
- Idle Control System
- Fuel Supply System
- EVAP System
- ETCS (Electronic Throttle Control System)
VTEC/VTC System
Cruise Control
- Notes
- How the Circuit Works
VSA
A/T Controls
Horn
SRS
Multiplex Control System
- Notes
- Power, Grounds and Diagnostics
- F-CAN Communication Lines (High and Low) and UART Communication Line
- GA-NET Bus (EX, SC: except Navigation)
- GA-NET Bus (Navigation)
- GA-NET Audio (Navigation)
- How the Circuit Works
  - Notes
  - F-CAN Network
HVAC
- Notes
- How the Circuit Works
Fans
- Notes
- How the Circuit Works
Rear Window Defogger
- Notes
- How the Circuit Works
Reminder Systems, Key Light Timer, and Low Oil Pressure Indicator
Gauges and Indicators
- Notes
- How the Circuit Works
TPMS (Tire Pressure Monitoring System)
A/T Gear Position Indicator
Front Wiper/Washer
- Notes
- How the Circuit Works
Rear Wiper/Washer
Exterior Lights
- Notes
- Headlights
- How the Circuit Works
- License Plate, Parking, Side Marker Lights and Taillights
- Brake Lights
- Turn Signal and Hazard Warning Lights
- Back-up Lights
- Fog Lights
  - Honda Accessory
Interior Lights
- Notes
- Dash and Console Lights
- Ceiling Lights and Front Individual Map Lights
Entry Light Control System
Trailer Lighting Connector
- Notes
- Honda Accessory
Power Windows
- Notes
- How the Circuit Works
Power Door Locks/Keyless Entry
Immobilizer System
- Notes
- How the Circuit Works
Security System
- Notes
- Honda Accessory
Interlock System
- Notes
- How the Circuit Works
  - Key Interlock
  - Shift Position Interlock
Power Mirrors
- Notes
- How the Circuit Works
Audio System
- Notes
- Lx
- EX, SC: except Navigation
- Navigation
- Honda Accessory
  - Cassette Player/In-dash CD Changer Player
Accessory Power Sockets
Navigation System
- Notes
- How the Circuit Works
Rearview Camera
- Notes
- Navigation