The Honda S2000, a legendary 2-door roadster, was produced from 1999 to 2009 under the model codes AP1 and AP2. Celebrated for its high-revving naturally aspirated engine, balanced rear-wheel-drive platform, and pure driving dynamics, the S2000 has become an icon among enthusiasts worldwide.
In this article, you will find fuse box diagrams for the Honda S2000, covering model years 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 and 2009. These diagrams provide essential details about the fuse layout, helping you identify, inspect, and replace fuses and relays associated with critical vehicle systems.
Fuse Panel Locations – Step-by-step information on where the fuse panels are positioned inside the vehicle.
Fuse Assignments – Detailed explanations of what each fuse and relay controls for accurate diagnostics.
Whether you’re troubleshooting an electrical issue or simply replacing a blown fuse, this guide will help you maintain the performance and reliability of your Honda S2000 (1999–2009).
The interior fuse box is underneath the dashboard on the driver’s side. To open it, turn the knob.
Fuse box diagram
Assignment of the fuses in the instrument panel
№
Ampere Rating
Description
1
10
Supplemental Restraint System (SRS) Unit
2
15
Supplemental Restraint System (SRS) Unit, Fuel Pump, Immobilizer Control Unit-Receiver (2006-2009), PGM-FI Main Relay (1999-2005), Fuel Tank Unit, Passenger’s Airbag Cut-Off Indicator, Passenger’s Weight Sensor Unit
Back-up Lights, Charging System Light (2004-2005), Daytime Running Light (DRL) Indicator, Electronic Power Steering (EPS) Control Unit, Gauge Assembly, Keyless Door Lock Control Unit, Convertible Top Control Unit
6
15
Air Control Solenoid Valve, Alternator, Charging System Indicator (1999-2003), Cruise Control Unit, Cruise Control Main Switch, Electrical Load Detector (ELD) Unit, Evaporative Emission Control (EVAP) Bypass Solenoid Valve, EVAP Canister Vent Shut Valve, EVAP Canister Purge Valve, Primary and Secondary Heated Oxygen Sensors, Rear Window Defogger Change Relay (2002-2005)
7
7.5
Turn Signal/Hazard Relay
8
20
Power Window Master Switch, Windshield Wiper Motor, Intermittent Wiper Relay
9
10
Accessory Power Socket, Audio Unit, Radio Remote Switch, Convertible Top Switch Light
10
7.5
2006-2009: Air Fuel Ratio (A/F) Sensor Relay (LAF)
11
7.5
2006-2009: Electronic Throttle Control System (ETCS) Control Relay
12
15
Windshield Washer Motor, Convertible Top Switch
13
7.5
Intermittent Wiper Driving Circuit (in the Gauge Assembly)
14
15
2006-2009: Throttle Actuator Control Module
15
20
2006-2009: Air Fuel Ratio (A/F) Sensor No.1, Evaporative Emission Control (EVAP) Canister Vent Shut Valve
16
15
2006-2009: Ignition Coils, Ignition Coil Relay
17
20
Driver’s Window Motor
18
20
Passenger’s Window Motor, Convertible Top Control Unit
19
7.5
ABS Modulator-Control Unit (1999-2005), Daytime Running Lights Control Unit, Power Mirror Actuator, Rear Window Defogger Relay
20
7.5
A/C Compressor Clutch Relay, Blower Motor Relay, A/C Condenser Fan Relay, Heater Control Panel, Radiator Fan Relay, Recirculation Control Motor
21
7.5
Engine Control Module (ECM), PGM-FI Main Relay (1999-2005), Tire Pressure Monitoring System (TPMS) Control Unit
22
15
Audio Unit
23
10
Taillight Relay, Audio Unit Light, Cruise Control Main Switch Light, Front Parking Lights, Gauge Lights, Hazard Warning Switch Light, Heater Control Panel Lights, Keyless Door Lock Control Unit, License Plate Light, Option Connector, Convertible Top Switch Lights, Radio Remote Switch Lights, Rear Side Marker Lights, Taillights, Rear Window Defogger Switch Light, Passenger’s Airbag Cutoff Indicator Illumination Light (2006-2009), VSA Off Switch Light
24
7.5
Ceiling/Spotlights, Trunk Light
25
7.5
Engine Control Module (ECM), Gauge Assembly, Heater Control Panel, Immobilizer Indicator Light, Convertible Top Control Unit, Immobilizer Control Unitreceiver (2006-2009), XM Receiver, Immobilizer System Indicator
26
15
Keyless Door Lock Control Unit, Trunk Lid Opener Solenoid
The primary under-hood fuse box is located on the passenger’s side, next to the battery. The secondary fuse box is on the driver’s side, near the brake fluid reservoir.
Fuse box diagram (Primary)
Assignment of the fuses in the primary engine compartment fuse box
№
Ampere Rating
Description
41
100
Battery, Power Distribution
42
40
Ignition Switch (BAT)
43
20
Right Headlight (High/Low Beam), Daytime Running Lights Control Unit
44
–
Not Used
45
20
Left Headlight (High/Low Beam), Daytime Running Lights Control Unit, Gauge Assembly, High Beam Indicator, High Beam Cut Relay
46
15
Data Link Connector (DLC), PGM-FI Main Relay (1999-2005), Crankshaft Position (CKP) Sensor (2006-2009), Camshaft Position (CMP) Sensor (2006-2009), Engine Control Module (ECM (2006-2009))
47
10 or 15
1999-2001 (10A): ABS Modulator-Control Unit, Brake Lights, Cruise Control Unit, Engine Control Module (ECM), High Mount Brake Light, Horn;
2002-2009 (15A): ABS Modulator-Control Unit (2002-2005), Brake Lights, Cruise Control Unit (2002-2005), Engine Control Module (ECM), High Mount Brake Light, Horn
