Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Wire Harness ('06-09 Model)
2009 Honda S2000 BaseSECTION Engine Wire Harness ('06-09 Model)
CONNECTOR TO HARNESS INDEX - ENGINE WIRE HARNESS ('06-09 MODEL)
| Connector or Terminal | Ref | Cavities | Location | Connects to | Notes |
|---|---|---|---|---|---|
| A/C compressor | 23 | 1 | Left side of engine compartment | - | - |
| A/F sensor | 9 | 4 | Middle of transmission | - | - |
| Alternator | 24 | 4 | Left side of engine compartment | - | - |
| Alternator | 25 | 1 | Left side of engine compartment | - | - |
| Back-up light switch | 10 | 2 | Middle of transmission | - | - |
| CMP sensor | 6 | 3 | Right side of engine compartment | - | - |
| ECM connector A | 15 | 31 | Behind left kick panel | - | - |
| ECM connector B | 16 | 24 | Behind left kick panel | - | - |
| Engine coolant temperature (ECT) sensor 1 | 32 | 2 | Middle of engine | - | - |
| Knock sensor | 26 | 1 | Middle of engine | - | - |
| MAP sensor | 22 | 3 | Left side of engine compartment | - | - |
| No. 1 ignition coil | 3 | 3 | Middle of engine | - | - |
| No. 2 ignition coil | 4 | 3 | Middle of engine | - | - |
| No. 3 ignition coil | 5 | 3 | Middle of engine | - | - |
| No. 4 ignition coil | 7 | 3 | Middle of engine | - | - |
| No. 1 injector | 30 | 2 | Middle of engine | - | - |
| No. 2 injector | 27 | 2 | Middle of engine | - | - |
| No. 3 injector | 31 | 2 | Middle of engine | - | - |
| No. 4 injector | 19 | 2 | Middle of engine | - | - |
| Output shaft (countershaft) speed sensor | 12 | 3 | Middle of transmission | - | - |
| Rocker arm oil control solenoid (VTEC solenoid valve) | 2 | 1 | Right side of engine compartment | - | - |
| Rocker arm oil pressure switch (VTEC oil pressure switch) | 34 | 2 | Right side of engine compartment | - | - |
| Secondary heated oxygen sensor (SHO2S) | 11 | 4 | Middle of transmission | - | - |
| Starter solenoid | 20 | 1 | Left side of engine compartment | - | - |
| Throttle body | 21 | 6 | Left side of engine compartment | - | - |
| C101 | 14 | 16 | Behind left kick panel | DASHBOARD WIRE HARNESS A | - |
| C102 | 13 | 6 | Behind left kick panel | DASHBOARD WIRE HARNESS A | - |
| C103 | 17 | 13 | Behind left kick panel | DASHBOARD WIRE HARNESS A ) | - |
| C104 (Junction connector) | 18 | 20 | Behind left kick panel | - | - |
| C105 | 28 | 3 | Middle of Engine | CKP sensor subharness | - |
| T101 | 1 | - | Main underhood fuse/relay box | - | - |
| T103 | 33 | - | Oil pressure switch | - | - |
| G101 | 8 | - | Rear of engine | Engine ground via engine wire harness | - |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.