AP2 2006–09 (F22C1, DBW) → Speeduino Speeduino v0.4 (auto)
AP2 2006–09 (F22C1, DBW) — Speeduino — Speeduino
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-20
Before you start
Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 3: read the Findings page before cutting any wire |
| Size of the job | 53 wires · 14 connectors · 5 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-A-2 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-E-9 | MAIN-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | NEW-BATT-1 | MAIN-R-IN | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | MAIN-R-COIL- | SP-GND-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | MAIN-R-OUT | SPEEDUINO-PWR-12V | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-A-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-A-8 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-A-9 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-E-3 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | SPEEDUINO-A-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | SPEEDUINO-A-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-A-23 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-A-24 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-E-4 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | TB-J-GND | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | SPEEDUINO-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | SPEEDUINO-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-A-20 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-21 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-E-5 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | SP-5V1-1 | SPEEDUINO-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | TB-J-VCC | SPEEDUINO-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-7 | SPEEDUINO-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-6 | SPEEDUINO-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-16 | SPEEDUINO-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-15 | SPEEDUINO-A-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A-14 | SPEEDUINO-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-13 | SPEEDUINO-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-B-5 | SPEEDUINO-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-B-4 | SPEEDUINO-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-B-3 | SPEEDUINO-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-B-2 | SPEEDUINO-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | TB-J-M- | SPEEDUINO-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | TB-J-M+ | SPEEDUINO-A-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-E-17 | SPEEDUINO-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-E-7 | SPEEDUINO-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-B-6 | RLY1-R-OUT | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | SP-14V-1 | RLY1-R-IN | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | RLY1-R-COIL- | SPEEDUINO-A-36 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-30 | SPEEDUINO-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-25 | SPEEDUINO-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-B-8 | SPEEDUINO-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-D-15 | SPEEDUINO-A-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-E-12 | SPEEDUINO-A-37 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-E-18 | SPEEDUINO-A-38 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-E-25 | SPEEDUINO-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-E-20 | SPEEDUINO-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-E-1 | SPEEDUINO-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-A-18 | SPEEDUINO-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-B-11 | SPEEDUINO-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
Bench test (before first power-up)
Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).
| # | Probe A | Probe B | Expect | Why | Reading |
|---|---|---|---|---|---|
| 1 | RLY1-R-COIL+ | MAIN-R-COIL- | open (OL) | +12 V supply must not touch power ground | |
| 2 | RLY1-R-COIL+ | SPEEDUINO-A-12 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | SPEEDUINO-A-28 | SPEEDUINO-A-12 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 4 | MAIN-R-COIL+ | SPEEDUINO-A-13 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 5 | MAIN-R-COIL- | MAIN-R-COIL+ | open (OL) | power ground must not touch +12 V supply | |
| 6 | MAIN-R-COIL- | MAIN-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 7 | MAIN-R-COIL- | NEW-BATT-1 | open (OL) | power ground must not touch +12 V supply | |
| 8 | MAIN-R-COIL- | RLY1-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 9 | MAIN-R-COIL- | SPEEDUINO-A-13 | open (OL) | power ground must not touch 5 V sensor reference | |
| 10 | MAIN-R-COIL- | SPEEDUINO-A-28 | open (OL) | power ground must not touch 5 V sensor reference | |
| 11 | RLY1-R-COIL+ | SPEEDUINO-A-13 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 12 | RLY1-R-COIL+ | SPEEDUINO-A-28 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 13 | RLY1-R-OUT | SPEEDUINO-A-13 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 14 | SPEEDUINO-A-12 | MAIN-R-COIL+ | open (OL) | sensor ground must not touch +12 V supply | |
| 15 | SPEEDUINO-A-12 | MAIN-R-OUT | open (OL) | sensor ground must not touch +12 V supply | |
| 16 | SPEEDUINO-A-12 | NEW-BATT-1 | open (OL) | sensor ground must not touch +12 V supply | |
| 17 | SPEEDUINO-A-12 | RLY1-R-OUT | open (OL) | sensor ground must not touch +12 V supply | |
| 18 | SPEEDUINO-A-12 | SPEEDUINO-A-13 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 19 | SPEEDUINO-A-13 | MAIN-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 20 | SPEEDUINO-A-13 | NEW-BATT-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 21 | SPEEDUINO-A-28 | MAIN-R-COIL+ | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 22 | SPEEDUINO-A-28 | MAIN-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 23 | SPEEDUINO-A-28 | NEW-BATT-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 24 | SPEEDUINO-A-28 | RLY1-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MAIN-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (ignition-switched +12V) | — | W3 | — | 0.5 | OEM-E-9 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W5 | — | 0.5 | SP-GND-1 | — | — | — |
| IN | Relay contact input (battery + via main fuse) | — | W4 | — | 0.85 | NEW-BATT-1 | — | — | — |
| OUT | Relay contact output (switched +12V bus) | — | W6 | — | 0.85 | SPEEDUINO-PWR-12V | — | — | — |
NEW-BATT
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | MAIN-R-IN | — | — | — |
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Knock sensor | — | — | — | — | — | — | — | — |
| 2 | Ignition power 2 | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Ignition power 1 | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Power ground 2 | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Power ground 1 | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Cam position sensor (T2) | — | W26 | — | 0.5 | SPEEDUINO-A-24 | — | — | — |
| 7 | Crank position sensor (T1) | — | W25 | — | 0.5 | SPEEDUINO-A-25 | — | — | — |
| 8 | Logic ground 2 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 9 | Logic ground 1 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | A/F sensor heater | — | — | — | — | — | — | — | — |
| 11 | Unused cavity | — | — | — | — | — | — | — | — |
| 12 | Unused cavity | — | — | — | — | — | — | — | — |
| 13 | Ignition coil 4 | — | W30 | — | 0.5 | SPEEDUINO-A-8 | — | — | — |
| 14 | Ignition coil 3 | — | W29 | — | 0.5 | SPEEDUINO-A-33 | — | — | — |
| 15 | Ignition coil 2 | — | W28 | — | 0.5 | SPEEDUINO-A-34 | — | — | — |
| 16 | Ignition coil 1 | — | W27 | — | 0.5 | SPEEDUINO-A-7 | — | — | — |
| 17 | Unused cavity | — | — | — | — | — | — | — | — |
| 18 | Vehicle speed sensor | — | W52 | — | 0.5 | SPEEDUINO-A-14 | — | — | — |
| 19 | Unused cavity | — | — | — | — | — | — | — | — |
| 20 | Sensor voltage 2 | — | W20 | — | 0.5 | SP-5V1-1 | — | — | — |
| 21 | Sensor voltage 1 | — | W21 | — | 0.5 | SP-5V1-1 | — | — | — |
| 22 | Unused cavity | — | — | — | — | — | — | — | — |
| 23 | Sensor ground 2 | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Sensor ground 1 | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 25 | Accelerator pedal position B | — | W44 | — | 0.5 | SPEEDUINO-A-22 | — | — | — |
| 26 | Accelerator pedal position A | — | — | — | — | — | — | — | — |
| 27 | Unused cavity | — | — | — | — | — | — | — | — |
| 28 | A/F sensor signal − | — | — | — | — | — | — | — | — |
| 29 | Unused cavity | — | — | — | — | — | — | — | — |
| 30 | MAP sensor | — | W43 | — | 0.5 | SPEEDUINO-A-11 | — | — | — |
| 31 | A/F sensor signal + | — | — | — | — | — | — | — | — |
OEM-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | — | — | — | — | — | — | — |
| 2 | Injector 4 | — | W34 | — | 0.5 | SPEEDUINO-A-5 | — | — | — |
| 3 | Injector 3 | — | W33 | — | 0.5 | SPEEDUINO-A-3 | — | — | — |
| 4 | Injector 2 | — | W32 | — | 0.5 | SPEEDUINO-A-2 | — | — | — |
| 5 | Injector 1 | — | W31 | — | 0.5 | SPEEDUINO-A-1 | — | — | — |
| 6 | VTEC solenoid | — | W39 | — | 0.5 | RLY1-R-OUT | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | Coolant temp sensor | — | W45 | — | 0.5 | SPEEDUINO-A-19 | — | — | — |
| 9 | — | — | — | — | — | — | — | — | — |
| 10 | Alternator L signal | — | — | — | — | — | — | — | — |
| 11 | VTEC oil pressure switch | — | W53 | — | 0.5 | SPEEDUINO-A-18 | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | Alternator FR signal | — | — | — | — | — | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | NC | — | — | — | — | — | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Intake air temp sensor | — | — | — | — | — | — | — | — |
| 18 | Alternator control | — | — | — | — | — | — | — | — |
| 19 | Throttle actuator command to throttle control module (SEFD) | — | — | — | — | — | — | — | — |
| 20 | Throttle actuator command to throttle control module (SEDF) | — | — | — | — | — | — | — | — |
| 21 | Evap canister purge valve | — | — | — | — | — | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | — | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
OEM-D
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Cruise set switch | — | — | — | — | — | — | — | — |
| 2 | Unused cavity | — | — | — | — | — | — | — | — |
| 3 | Unused cavity | — | — | — | — | — | — | — | — |
| 4 | Cruise main switch | — | — | — | — | — | — | — | — |
| 5 | Unused cavity | — | — | — | — | — | — | — | — |
| 6 | Unused cavity | — | — | — | — | — | — | — | — |
| 7 | Cruise resume switch | — | — | — | — | — | — | — | — |
| 8 | Brake pedal position switch | — | — | — | — | — | — | — | — |
| 9 | Cruise clutch signal | — | — | — | — | — | — | — | — |
| 10 | Unused cavity | — | — | — | — | — | — | — | — |
| 11 | Unused cavity | — | — | — | — | — | — | — | — |
| 12 | Unused cavity | — | — | — | — | — | — | — | — |
| 13 | Unused cavity | — | — | — | — | — | — | — | — |
| 14 | Unused cavity | — | — | — | — | — | — | — | — |
| 15 | Throttle actuator relay | — | W46 | — | 0.5 | SPEEDUINO-A-35 | — | — | — |
| 16 | Unused cavity | — | — | — | — | — | — | — | — |
| 17 | Unused cavity | — | — | — | — | — | — | — | — |
OEM-E
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Coolant temp sensor 2 | — | W51 | — | 0.5 | SPEEDUINO-A-20 | — | — | — |
| 2 | Unused cavity | — | — | — | — | — | — | — | — |
| 3 | Logic ground 3 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Sensor ground 3 | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Sensor voltage 3 | — | W22 | — | 0.5 | SP-5V1-1 | — | — | — |
| 6 | Unused cavity | — | — | — | — | — | — | — | — |
| 7 | Main relay control | — | W38 | — | 0.5 | SPEEDUINO-A-15 | — | — | — |
| 8 | A/F sensor heater relay | — | — | — | — | — | — | — | — |
| 9 | Ignition signal | — | W3 | — | 0.5 | MAIN-R-COIL+ | — | — | — |
| 10 | Unused cavity | — | — | — | — | — | — | — | — |
| 11 | CAN H | — | — | — | — | — | — | — | — |
| 12 | Radiator fan control | — | W47 | — | 0.5 | SPEEDUINO-A-37 | — | — | — |
| 13 | Multiplex communication | — | — | — | — | — | — | — | — |
| 14 | Fuel tank pressure sensor | — | — | — | — | — | — | — | — |
| 15 | Electrical load detector | — | — | — | — | — | — | — | — |
| 16 | Power steering load detector | — | — | — | — | — | — | — | — |
| 17 | Fuel pump relay | — | W37 | — | 0.5 | SPEEDUINO-A-16 | — | — | — |
| 18 | A/C clutch relay | — | W48 | — | 0.5 | SPEEDUINO-A-38 | — | — | — |
| 19 | Evap canister vent shut valve | — | — | — | — | — | — | — | — |
| 20 | Secondary O2 sensor | — | W50 | — | 0.5 | SPEEDUINO-A-21 | — | — | — |
| 21 | Secondary O2 heater | — | — | — | — | — | — | — | — |
| 22 | Brake pedal switch | — | — | — | — | — | — | — | — |
| 23 | K-Line | — | — | — | — | — | — | — | — |
| 24 | CAN L | — | — | — | — | — | — | — | — |
| 25 | Engine speed pulse (tacho) | — | W49 | — | 0.5 | SPEEDUINO-A-17 | — | — | — |
| 26 | NC | — | — | — | — | — | — | — | — |
| 27 | Immobilizer code | — | — | — | — | — | — | — | — |
| 28 | A/C switch signal | — | — | — | — | — | — | — | — |
| 29 | Service check signal | — | — | — | — | — | — | — | — |
| 30 | Write enable signal | — | — | — | — | — | — | — | — |
| 31 | Unused cavity | — | — | — | — | — | — | — | — |
RLY1-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (switched +12 V) | — | W41 | — | 0.5 | SP-14V-1 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W42 | — | 0.5 | SPEEDUINO-A-36 | — | — | — |
| IN | Relay contact input (switched +12 V) | — | W40 | — | 0.5 | SP-14V-1 | — | — | — |
| OUT | Relay contact output (switched +12 V to load) | — | W39 | — | 0.5 | OEM-B-6 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W14 | — | 0.5 | OEM-A-23 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-A-24 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-E-4 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | TB-J-GND | — | — | — |
| 1 | — | — | W18 | — | 0.5 | SPEEDUINO-A-12 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | SPEEDUINO-A-23 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-2 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-A-3 | — | — | — |
| 1 | — | — | W40 | — | 0.5 | RLY1-R-IN | — | — | — |
| 1 | — | — | W41 | — | 0.5 | RLY1-R-COIL+ | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W20 | — | 0.5 | OEM-A-20 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | OEM-A-21 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | OEM-E-5 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | SPEEDUINO-A-28 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W8 | — | 0.85 | OEM-A-5 | — | — | — |
| 1 | — | — | W5 | — | 0.5 | MAIN-R-COIL- | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-4 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-A-8 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | OEM-A-9 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | OEM-E-3 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | SPEEDUINO-A-10 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | SPEEDUINO-A-9 | — | — | — |
SPEEDUINO-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 | — | W31 | — | 0.5 | OEM-B-5 | — | — | — |
| 10 | Ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | MAP sensor (0-5V) | — | W43 | — | 0.5 | OEM-A-30 | — | — | — |
| 12 | Ground | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 13 | 5V | — | W24 | — | 0.5 | TB-J-VCC | — | — | — |
| 14 | Proto area 1 (flex fuel) | — | W52 | — | 0.5 | OEM-A-18 | — | — | — |
| 15 | Proto area 2 (fan) | — | W38 | — | 0.5 | OEM-E-7 | — | — | — |
| 16 | Proto area 3 (fuel pump) | — | W37 | — | 0.5 | OEM-E-17 | — | — | — |
| 17 | Proto area 4 (tachometer) | — | W49 | — | 0.5 | OEM-E-25 | — | — | — |
| 18 | Proto area 5 (clutch) | — | W53 | — | 0.5 | OEM-B-11 | — | — | — |
| 19 | Coolant temp (CLT) | — | W45 | — | 0.5 | OEM-B-8 | — | — | — |
| 2 | Injector 2 | — | W32 | — | 0.5 | OEM-B-4 | — | — | — |
| 20 | Inlet air temp (IAT) | — | W51 | — | 0.5 | OEM-E-1 | — | — | — |
| 21 | O2 sensor | — | W50 | — | 0.5 | OEM-E-20 | — | — | — |
| 22 | TPS input | — | W44 | — | 0.5 | OEM-A-25 | — | — | — |
| 23 | Ground | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Cam input / VR2+ | — | W26 | — | 0.5 | OEM-A-6 | — | — | — |
| 25 | Crank input / VR1+ | — | W25 | — | 0.5 | OEM-A-7 | — | — | — |
| 26 | VR2- | — | — | — | — | — | — | — | — |
| 27 | VR1- | — | — | — | — | — | — | — | — |
| 28 | 5V | — | W23 | — | 0.5 | SP-5V1-1 | — | — | — |
| 29 | Idle stepper 2B | — | — | — | — | — | — | — | — |
| 3 | Injector 3 | — | W33 | — | 0.5 | OEM-B-3 | — | — | — |
| 30 | Idle stepper 2A | — | — | — | — | — | — | — | — |
| 31 | Idle stepper 1A | — | W36 | — | 0.5 | TB-J-M+ | — | — | — |
| 32 | Idle stepper 1B | — | W35 | — | 0.5 | TB-J-M- | — | — | — |
| 33 | Ignition 3 | — | W29 | — | 0.5 | OEM-A-14 | — | — | — |
| 34 | Ignition 2 | — | W28 | — | 0.5 | OEM-A-15 | — | — | — |
| 35 | Boost | — | W46 | — | 0.5 | OEM-D-15 | — | — | — |
| 36 | Idle 2 (3-wire idle) | — | W42 | — | 0.5 | RLY1-R-COIL- | — | — | — |
| 37 | PWM idle | — | W47 | — | 0.5 | OEM-E-12 | — | — | — |
| 38 | VVT | — | W48 | — | 0.5 | OEM-E-18 | — | — | — |
| 5 | Injector 4 | — | W34 | — | 0.5 | OEM-B-2 | — | — | — |
| 7 | Ignition 1 | — | W27 | — | 0.5 | OEM-A-16 | — | — | — |
| 8 | Ignition 4 | — | W30 | — | 0.5 | OEM-A-13 | — | — | — |
| 9 | Ground | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
SPEEDUINO-PWR
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 12V | Main power (+12 V switched) | — | W6 | — | 0.85 | MAIN-R-OUT | — | — | — |
TB-J
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| TPS1 | Throttle position 1 | — | — | — | — | — | — | — | — |
| VCC | Throttle sensor 5V supply | — | W24 | — | 0.5 | SPEEDUINO-A-13 | — | — | — |
| TPS2 | Throttle position 2 | — | — | — | — | — | — | — | — |
| GND | Throttle sensor ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| M- | Throttle motor − | — | W35 | — | 0.5 | SPEEDUINO-A-32 | — | — | — |
| M+ | Throttle motor + | — | W36 | — | 0.5 | SPEEDUINO-A-31 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Knock sensor | knock_in | — | — | — | single_source | |
| OEM-A-10 | A/F sensor heater | low_side_out | — | — | — | single_source | |
| OEM-A-11 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-12 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-13 | Ignition coil 4 | ignition_out | SPEEDUINO-A-8 | Ignition 4 | ignition_out | single_source | |
| OEM-A-14 | Ignition coil 3 | ignition_out | SPEEDUINO-A-33 | Ignition 3 | ignition_out | single_source | |
| OEM-A-15 | Ignition coil 2 | ignition_out | SPEEDUINO-A-34 | Ignition 2 | ignition_out | single_source | |
| OEM-A-16 | Ignition coil 1 | ignition_out | SPEEDUINO-A-7 | Ignition 1 | ignition_out | single_source | |
| OEM-A-17 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-18 | Vehicle speed sensor | digital_in | SPEEDUINO-A-14 | Proto area 1 (flex fuel) | digital_in | single_source | |
| OEM-A-19 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-2 | Ignition power 2 | power_in | RLY1-R-COIL+ + RLY1-R-IN | Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) | power_in + power_out | single_source | |
| OEM-A-20 | Sensor voltage 2 | vref | SPEEDUINO-A-28 | 5V | vref | corroborated | |
| OEM-A-21 | Sensor voltage 1 | vref | SPEEDUINO-A-28 | 5V | vref | single_source | |
| OEM-A-22 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-23 | Sensor ground 2 | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 + TB-J-GND | Ground + Ground + Throttle sensor ground | sensor_ground | corroborated | |
| OEM-A-24 | Sensor ground 1 | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 + TB-J-GND | Ground + Ground + Throttle sensor ground | sensor_ground | single_source | |
| OEM-A-25 | Accelerator pedal position B | analog_in | SPEEDUINO-A-22 | TPS input | analog_in | corroborated | |
| OEM-A-26 | Accelerator pedal position A | analog_in | — | — | — | corroborated | |
| OEM-A-27 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-28 | A/F sensor signal − | — | — | — | — | single_source | |
| OEM-A-29 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-3 | Ignition power 1 | power_in | RLY1-R-COIL+ + RLY1-R-IN | Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) | power_in + power_out | single_source | |
| OEM-A-30 | MAP sensor | analog_in | SPEEDUINO-A-11 | MAP sensor (0-5V) | analog_in | single_source | |
| OEM-A-31 | A/F sensor signal + | — | — | — | — | single_source | |
| OEM-A-4 | Power ground 2 | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | single_source | |
| OEM-A-5 | Power ground 1 | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | single_source | |
| OEM-A-6 | Cam position sensor (T2) | trigger_in | SPEEDUINO-A-24 | Cam input / VR2+ | trigger_in | single_source | |
| OEM-A-7 | Crank position sensor (T1) | trigger_in | SPEEDUINO-A-25 | Crank input / VR1+ | trigger_in | single_source | |
| OEM-A-8 | Logic ground 2 | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | single_source | |
| OEM-A-9 | Logic ground 1 | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | single_source | |
| OEM-B-10 | Alternator L signal | — | — | — | — | single_source | |
| OEM-B-11 | VTEC oil pressure switch | digital_in | SPEEDUINO-A-18 | Proto area 5 (clutch) | digital_in | single_source | |
| OEM-B-13 | Alternator FR signal | analog_in | — | — | — | single_source | |
| OEM-B-15 | NC | — | — | — | — | unverified | |
| OEM-B-17 | Intake air temp sensor | temp_in | — | — | — | single_source | |
| OEM-B-18 | Alternator control | low_side_out | — | — | — | single_source | |
| OEM-B-19 | Throttle actuator command to throttle control module (SEFD) | — | — | — | — | conflict | |
| OEM-B-2 | Injector 4 | injector_out | SPEEDUINO-A-5 | Injector 4 | injector_out | single_source | |
| OEM-B-20 | Throttle actuator command to throttle control module (SEDF) | — | — | — | — | conflict | |
| OEM-B-21 | Evap canister purge valve | low_side_out | — | — | — | single_source | |
| OEM-B-3 | Injector 3 | injector_out | SPEEDUINO-A-3 | Injector 3 | injector_out | single_source | |
| OEM-B-4 | Injector 2 | injector_out | SPEEDUINO-A-2 | Injector 2 | injector_out | single_source | |
| OEM-B-5 | Injector 1 | injector_out | SPEEDUINO-A-1 | Injector 1 | injector_out | single_source | |
| OEM-B-6 | VTEC solenoid | high_side_out | RLY1-R-OUT | Relay contact output (switched +12 V to load) | power_out | single_source | |
| OEM-B-8 | Coolant temp sensor | temp_in | SPEEDUINO-A-19 | Coolant temp (CLT) | temp_in | single_source | |
| OEM-D-1 | Cruise set switch | digital_in | — | — | — | single_source | |
| OEM-D-10 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-11 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-12 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-13 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-14 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-15 | Throttle actuator relay | low_side_out | SPEEDUINO-A-35 | Boost | low_side_out | single_source | |
| OEM-D-16 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-17 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-2 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-3 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-4 | Cruise main switch | digital_in | — | — | — | single_source | |
| OEM-D-5 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-6 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-7 | Cruise resume switch | digital_in | — | — | — | single_source | |
| OEM-D-8 | Brake pedal position switch | digital_in | — | — | — | single_source | |
| OEM-D-9 | Cruise clutch signal | digital_in | — | — | — | single_source | |
| OEM-E-1 | Coolant temp sensor 2 | temp_in | SPEEDUINO-A-20 | Inlet air temp (IAT) | temp_in | single_source | |
| OEM-E-10 | Unused cavity | — | — | — | — | unverified | |
| OEM-E-11 | CAN H | can_h | — | — | — | single_source | |
| OEM-E-12 | Radiator fan control | low_side_out | SPEEDUINO-A-37 | PWM idle | low_side_out | single_source | |
| OEM-E-13 | Multiplex communication | serial | — | — | — | single_source | |
| OEM-E-14 | Fuel tank pressure sensor | analog_in | — | — | — | single_source | |
| OEM-E-15 | Electrical load detector | analog_in | — | — | — | single_source | |
| OEM-E-16 | Power steering load detector | analog_in | — | — | — | corroborated | |
| OEM-E-17 | Fuel pump relay | low_side_out | SPEEDUINO-A-16 | Proto area 3 (fuel pump) | low_side_out | single_source | |
| OEM-E-18 | A/C clutch relay | low_side_out | SPEEDUINO-A-38 | VVT | low_side_out | single_source | |
| OEM-E-19 | Evap canister vent shut valve | low_side_out | — | — | — | single_source | |
| OEM-E-2 | Unused cavity | — | — | — | — | unverified | |
| OEM-E-20 | Secondary O2 sensor | lambda_nb_in | SPEEDUINO-A-21 | O2 sensor | lambda_nb_in | single_source | |
| OEM-E-21 | Secondary O2 heater | low_side_out | — | — | — | single_source | |
| OEM-E-22 | Brake pedal switch | digital_in | — | — | — | single_source | |
| OEM-E-23 | K-Line | serial | — | — | — | Gy | single_source |
| OEM-E-24 | CAN L | can_l | — | — | — | single_source | |
| OEM-E-25 | Engine speed pulse (tacho) | tacho_out | SPEEDUINO-A-17 | Proto area 4 (tachometer) | tacho_out | single_source | |
| OEM-E-26 | NC | — | — | — | — | unverified | |
| OEM-E-27 | Immobilizer code | — | — | — | — | single_source | |
| OEM-E-28 | A/C switch signal | digital_in | — | — | — | single_source | |
| OEM-E-29 | Service check signal | — | — | — | — | single_source | |
| OEM-E-3 | Logic ground 3 | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | single_source | |
| OEM-E-30 | Write enable signal | — | — | — | — | single_source | |
| OEM-E-31 | Unused cavity | — | — | — | — | unverified | |
| OEM-E-4 | Sensor ground 3 | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 + TB-J-GND | Ground + Ground + Throttle sensor ground | sensor_ground | corroborated | |
| OEM-E-5 | Sensor voltage 3 | vref | SPEEDUINO-A-28 | 5V | vref | corroborated | |
| OEM-E-6 | Unused cavity | — | — | — | — | unverified | |
| OEM-E-7 | Main relay control | low_side_out | SPEEDUINO-A-15 | Proto area 2 (fan) | low_side_out | single_source | |
| OEM-E-8 | A/F sensor heater relay | low_side_out | — | — | — | single_source | |
| OEM-E-9 | Ignition signal | digital_in | MAIN-R-COIL+ | Relay coil positive (ignition-switched +12V) | power_in | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-2 | SP-14V-1 | 0.85 | no route | Ignition power 2 | — | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | no route | Ignition power 1 | — | |
| W3 | OEM-E-9 | MAIN-R-COIL+ | 0.5 | no route | Ignition signal | — | |
| W4 | NEW-BATT-1 | MAIN-R-IN | 0.85 | no route | Relay contact input (battery + via main fuse) | — | |
| W5 | MAIN-R-COIL- | SP-GND-1 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W6 | MAIN-R-OUT | SPEEDUINO-PWR-12V | 0.85 | no route | Relay contact output (switched +12V bus) | — | |
| W7 | OEM-A-4 | SP-GND-1 | 0.85 | no route | Power ground 2 | — | |
| W8 | OEM-A-5 | SP-GND-1 | 0.85 | no route | Power ground 1 | — | |
| W9 | OEM-A-8 | SP-GND-1 | 0.85 | no route | Logic ground 2 | — | |
| W10 | OEM-A-9 | SP-GND-1 | 0.85 | no route | Logic ground 1 | — | |
| W11 | OEM-E-3 | SP-GND-1 | 0.85 | no route | Logic ground 3 | — | |
| W12 | SP-GND-1 | SPEEDUINO-A-10 | 0.85 | no route | Ground | — | |
| W13 | SP-GND-1 | SPEEDUINO-A-9 | 0.85 | no route | Ground | — | |
| W14 | OEM-A-23 | SP-0V-1 | 0.5 | no route | Sensor ground 2 | — | |
| W15 | OEM-A-24 | SP-0V-1 | 0.5 | no route | Sensor ground 1 | — | |
| W16 | OEM-E-4 | SP-0V-1 | 0.5 | no route | Sensor ground 3 | — | |
| W17 | TB-J-GND | SP-0V-1 | 0.5 | no route | Throttle sensor ground | — | |
| W18 | SP-0V-1 | SPEEDUINO-A-12 | 0.5 | no route | Ground | — | |
| W19 | SP-0V-1 | SPEEDUINO-A-23 | 0.5 | no route | Ground | — | |
| W20 | OEM-A-20 | SP-5V1-1 | 0.5 | no route | Sensor voltage 2 | — | |
| W21 | OEM-A-21 | SP-5V1-1 | 0.5 | no route | Sensor voltage 1 | — | |
| W22 | OEM-E-5 | SP-5V1-1 | 0.5 | no route | Sensor voltage 3 | — | |
| W23 | SP-5V1-1 | SPEEDUINO-A-28 | 0.5 | no route | 5V | — | |
| W24 | TB-J-VCC | SPEEDUINO-A-13 | 0.5 | no route | Throttle sensor 5V supply | — | |
| W25 | OEM-A-7 | SPEEDUINO-A-25 | 0.5 | no route | Crank position sensor (T1) | — | |
| W26 | OEM-A-6 | SPEEDUINO-A-24 | 0.5 | no route | Cam position sensor (T2) | — | |
| W27 | OEM-A-16 | SPEEDUINO-A-7 | 0.5 | no route | Ignition coil 1 | — | |
| W28 | OEM-A-15 | SPEEDUINO-A-34 | 0.5 | no route | Ignition coil 2 | — | |
| W29 | OEM-A-14 | SPEEDUINO-A-33 | 0.5 | no route | Ignition coil 3 | — | |
| W30 | OEM-A-13 | SPEEDUINO-A-8 | 0.5 | no route | Ignition coil 4 | — | |
| W31 | OEM-B-5 | SPEEDUINO-A-1 | 0.5 | no route | Injector 1 | — | |
| W32 | OEM-B-4 | SPEEDUINO-A-2 | 0.5 | no route | Injector 2 | — | |
| W33 | OEM-B-3 | SPEEDUINO-A-3 | 0.5 | no route | Injector 3 | — | |
| W34 | OEM-B-2 | SPEEDUINO-A-5 | 0.5 | no route | Injector 4 | — | |
| W35 | TB-J-M- | SPEEDUINO-A-32 | 0.5 | no route | Throttle motor − | — | |
| W36 | TB-J-M+ | SPEEDUINO-A-31 | 0.5 | no route | Throttle motor + | — | |
| W37 | OEM-E-17 | SPEEDUINO-A-16 | 0.5 | no route | Fuel pump relay | — | |
| W38 | OEM-E-7 | SPEEDUINO-A-15 | 0.5 | no route | Main relay control | — | |
| W39 | OEM-B-6 | RLY1-R-OUT | 0.5 | no route | VTEC solenoid | — | |
| W40 | SP-14V-1 | RLY1-R-IN | 0.5 | no route | Relay contact input (switched +12 V) | — | |
| W41 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | no route | Relay coil positive (switched +12 V) | — | |
| W42 | RLY1-R-COIL- | SPEEDUINO-A-36 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W43 | OEM-A-30 | SPEEDUINO-A-11 | 0.5 | no route | MAP sensor | — | |
| W44 | OEM-A-25 | SPEEDUINO-A-22 | 0.5 | no route | Accelerator pedal position B | — | |
| W45 | OEM-B-8 | SPEEDUINO-A-19 | 0.5 | no route | Coolant temp sensor | — | |
| W46 | OEM-D-15 | SPEEDUINO-A-35 | 0.5 | no route | Throttle actuator relay | — | |
| W47 | OEM-E-12 | SPEEDUINO-A-37 | 0.5 | no route | Radiator fan control | — | |
| W48 | OEM-E-18 | SPEEDUINO-A-38 | 0.5 | no route | A/C clutch relay | — | |
| W49 | OEM-E-25 | SPEEDUINO-A-17 | 0.5 | no route | Engine speed pulse (tacho) | — | |
| W50 | OEM-E-20 | SPEEDUINO-A-21 | 0.5 | no route | Secondary O2 sensor | — | |
| W51 | OEM-E-1 | SPEEDUINO-A-20 | 0.5 | no route | Coolant temp sensor 2 | — | |
| W52 | OEM-A-18 | SPEEDUINO-A-14 | 0.5 | no route | Vehicle speed sensor | — | |
| W53 | OEM-B-11 | SPEEDUINO-A-18 | 0.5 | no route | VTEC oil pressure switch | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | S2K-0609-ECU-A | Honda | S2000 2006–09 ECU plug A (P/N unknown) | 1.000 | ea |
| connector | S2K-0609-ECU-B | Honda | S2000 2006–09 ECU plug B (P/N unknown) | 1.000 | ea |
| connector | S2K-0609-ECU-D | Honda | S2000 2006–09 ECU plug D (P/N unknown) | 1.000 | ea |
| connector | S2K-0609-ECU-E | Honda | S2000 2006–09 ECU plug E (P/N unknown) | 1.000 | ea |
| connector | S2K-0609-TB | Honda | 2006–09 S2000 throttle body plug, 6-way (pin numbers from Link forum dealer post; housing P/N unknown) | 1.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| dbw_motor | TB | Throttle motor + | — | SPEEDUINO-A-31 | Idle stepper 1A | hbridge | — |
| dbw_motor | TB | Throttle motor − | — | SPEEDUINO-A-32 | Idle stepper 1B | hbridge | — |
| dbw_tps | TB | Throttle position 1 | 0_5v | — | — | — | — |
| dbw_tps | TB | Throttle position 2 | 0_5v | — | — | — | — |
Findings
Open (20)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | PHYS_REQUIRED_OPEN | TB-J-TPS1 | TB-J-TPS1 "Throttle position 1" is required but not wired. |
| error | PHYS_REQUIRED_OPEN | TB-J-TPS2 | TB-J-TPS2 "Throttle position 2" is required but not wired. |
| error | REQUIRED_UNMAPPED | OEM-A-26 | Required OEM function "Accelerator pedal position A" (analog_in) is not connected to the new ECU. |
| warn | DATASET_GAP | S2000 ECU B | 9 of 24 cavities on S2000 ECU B have no pin data (1,7,9,12,14,16,22,23,24). Anything there is invisible to these checks. |
| warn | DBW_MOTOR_CURRENT | SPEEDUINO-A-31 | Cannot confirm Speeduino can drive the throttle motor: SPEEDUINO-A-31 "Idle stepper 1A" has no peak rating (motor stalls at ~14 A). |
| warn | DBW_MOTOR_CURRENT | SPEEDUINO-A-32 | Cannot confirm Speeduino can drive the throttle motor: SPEEDUINO-A-32 "Idle stepper 1B" has no peak rating (motor stalls at ~14 A). |
| warn | DBW_SHARED_5V | OEM-A-20 + OEM-A-21 + OEM-E-5 + SP-5V1-1 + SPEEDUINO-A-28 | These 5 V supplies are separate in the stock car (OEM-A-20 [s2k_vcc2], OEM-A-21 [s2k_vcc1], OEM-E-5 [s2k_vcc3]) and here share one ECU 5 V (SPEEDUINO-A-28). On a drive-by-wire car the OEM splits them so one short or fault can't corrupt both throttle/pedal tracks at once. Speeduino has 2 5 V sensor supply pin(s). All are in use, so decide: accept the shared supply (and rely on the ECU's DBW fault checks), or add a separate regulated 5 V for the sub tracks. |
| warn | LOAD_UNKNOWN | RLY1-R-OUT | RLY1-R-OUT "Relay contact output (switched +12 V to load)" drives OEM-B-6 VTEC solenoid (load 1.0 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-1 | SPEEDUINO-A-1 "Injector 1" drives OEM-B-5 Injector 1 (load 1.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-15 | SPEEDUINO-A-15 "Proto area 2 (fan)" drives OEM-E-7 Main relay control (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-16 | SPEEDUINO-A-16 "Proto area 3 (fuel pump)" drives OEM-E-17 Fuel pump relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-2 | SPEEDUINO-A-2 "Injector 2" drives OEM-B-4 Injector 2 (load 1.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-3 | SPEEDUINO-A-3 "Injector 3" drives OEM-B-3 Injector 3 (load 1.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-35 | SPEEDUINO-A-35 "Boost" drives OEM-D-15 Throttle actuator relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-37 | SPEEDUINO-A-37 "PWM idle" drives OEM-E-12 Radiator fan control (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-38 | SPEEDUINO-A-38 "VVT" drives OEM-E-18 A/C clutch relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-5 | SPEEDUINO-A-5 "Injector 4" drives OEM-B-2 Injector 4 (load 1.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | SUPPLY_GROUP | OEM-A-20 + OEM-A-21 + OEM-E-5 + SP-5V1-1 + SPEEDUINO-A-28 | Supplies meant to stay independent share one net: OEM-A-20 [s2k_vcc2], OEM-A-21 [s2k_vcc1], OEM-E-5 [s2k_vcc3]. The new ECU has no free 5 V reference, so they share one: normal on a standalone, but a short on any of these sensors drops them all. |
| info | NET_FAMILY | OEM-E-9 ↔ MAIN-R-COIL+ | OEM-E-9 "Ignition signal" [digital_in] is wired to MAIN-R-COIL+ "Relay coil positive (ignition-switched +12V)" [power_in]. Switched supply used as the ignition-on sense. |
| info | UNMAPPED | OEM | 31 optional OEM pins are not mapped: OEM-A-1 Knock sensor; OEM-A-10 A/F sensor heater; OEM-A-28 A/F sensor signal −; OEM-A-31 A/F sensor signal +; OEM-B-10 Alternator L signal; OEM-B-13 Alternator FR signal; OEM-B-17 Intake air temp sensor; OEM-B-18 Alternator control; OEM-B-19 Throttle actuator command to throttle control module (SEFD); OEM-B-20 Throttle actuator command to throttle control module (SEDF); OEM-B-21 Evap canister purge valve; OEM-D-1 Cruise set switch; OEM-D-4 Cruise main switch; OEM-D-7 Cruise resume switch; OEM-D-8 Brake pedal position switch; OEM-D-9 Cruise clutch signal; OEM-E-11 CAN H; OEM-E-13 Multiplex communication; OEM-E-14 Fuel tank pressure sensor; OEM-E-15 Electrical load detector; OEM-E-16 Power steering load detector; OEM-E-19 Evap canister vent shut valve; OEM-E-21 Secondary O2 heater; OEM-E-22 Brake pedal switch; OEM-E-23 K-Line; OEM-E-24 CAN L; OEM-E-27 Immobilizer code; OEM-E-28 A/C switch signal; OEM-E-29 Service check signal; OEM-E-30 Write enable signal; OEM-E-8 A/F sensor heater relay |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Fit check: needs add-on. Resolve these before building: - No drive-by-wire; needs a cable-throttle conversion or an external DBW controller - Trigger pattern for Honda F22C1 not found in the ECU's docs (Confirmed absent from documented trigger/decoder list. The Honda J30/J32 decoder (In Development) covers 'early S2000' (AP1/F20C) only; the AP2 F22C1 is not covered by any decoder.) - No knock input; the stock knock sensor would be unused Auto-mapped by auto_map() from the library pin data on 2026-10-20. Review every wire against both manuals before building. Open items: - OEM-A 26: Accelerator pedal position A: no free tps/analog_0_5 on Speeduino Speeduino - TB-J TPS1: Throttle position 1: no free analog_0_5 on Speeduino Speeduino - TB-J TPS2: Throttle position 2: no free analog_0_5 on Speeduino Speeduino Not wired: - OEM-A 1: Knock sensor: no free knock input on Speeduino Speeduino - OEM-E 8: A/F sensor heater relay: no free relay_control/low_side/heater_low_side/ls_hs/injector rated ≥ 0.2 A on Speeduino Speeduino - OEM-E 21: Secondary O2 heater: no free heater_low_side/low_side/relay_control/ls_hs/injector on Speeduino Speeduino - OEM-A 10: A/F sensor heater: no free heater_low_side/low_side/relay_control/ls_hs/injector on Speeduino Speeduino - OEM-B 18: Alternator control: no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B 21: Evap canister purge valve: no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-E 19: Evap canister vent shut valve: no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B 17: Intake air temp sensor: no free thermistor/analog_0_5 on Speeduino Speeduino - OEM-B 13: Alternator FR signal: no free analog_0_5 on Speeduino Speeduino - OEM-E 14: Fuel tank pressure sensor: no free analog_0_5 on Speeduino Speeduino - OEM-E 15: Electrical load detector: no free analog_0_5 on Speeduino Speeduino - OEM-E 16: Power steering load detector: no free analog_0_5 on Speeduino Speeduino - OEM-D 1: Cruise set switch: no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-D 4: Cruise main switch: no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-D 7: Cruise resume switch: no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-D 8: Brake pedal position switch: no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-D 9: Cruise clutch signal: no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-E 22: Brake pedal switch: no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-E 28: A/C switch signal: no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-E 11: CAN H: no free can_h on Speeduino Speeduino - OEM-E 24: CAN L: no free can_l on Speeduino Speeduino - OEM-E 13: Multiplex communication: no free k_line on Speeduino Speeduino - OEM-E 23: K-Line: no free k_line on Speeduino Speeduino - OEM-A 28: A/F sensor signal −: not classified in the library; wire by hand - OEM-A 31: A/F sensor signal +: not classified in the library; wire by hand - OEM-B 10: Alternator L signal: not classified in the library; wire by hand - OEM-B 19: Throttle actuator command to throttle control module (SEFD): not classified in the library; wire by hand - OEM-B 20: Throttle actuator command to throttle control module (SEDF): not classified in the library; wire by hand - OEM-E 27: Immobilizer code: not classified in the library; wire by hand - OEM-E 29: Service check signal: not classified in the library; wire by hand - OEM-E 30: Write enable signal: not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | AEM 30-6053 Series 2 Plug & Play EMS, 2006–2008 S2000 AP2 (original ECU pinout) | https://documents.aemelectronics.com/techlibrary_30-6053_series_2_plug___play_ems.pdf | — | 2026-10-05 | ecc8006f849f |
| 4 | vendor_doc | Bosch relay catalogue (mini ISO relays) | https://www.bosch-ibusiness.com/media/downloads/kataloge/relay/2025_10_bosch_relay_catalogue.pdf | archive | 2026-10-05 | 20344cff1ef3 |
| 4 | vendor_doc | Emtron SL4/SL6/SL8 pinout pages | https://docs.emtronaustralia.com.au/engine-management/wiring/index.html | archive | 2026-10-05 | e52b3da9996a |
| 4 | community_copy | Honda S2000 Service Manual 2000–2008, Fuel and Emissions Systems | https://www.s2000.wiki/view/images/7/7f/Service_Manual_2000-2008.pdf | archive | 2026-10-05 | a470cfc928e9 |
| 4 | vendor_doc | Omron G8V-RH-1C7T-R-DC12 high-current micro 280 automotive relay datasheet | https://www.alldatasheet.com/datasheet-pdf/pdf/333797/OMRON/G8V-RH-1C7T-R-DC12.html | — | 2026-10-05 | 764a0505a941 |
| 4 | vendor_doc | Speeduino Manual (08/04/25) — V0.4 board IDC40 pinout & features | https://speeduino.com/Speeduino_manual.pdf | archive | 2026-10-05 | 21806bd29ef0 |
| 4 | vendor_doc | Speeduino wiki — V0.4 board & wiring (12v input, switched power) | https://wiki.speeduino.com/en/boards/V04 | — | — | — |
| 3 | community_copy | 2008 Honda S2000 Electrical Troubleshooting Manual (factory) | https://s2000.club/OM/Wiring%20Diagram.pdf | — | — | — |
| 3 | vendor_doc | ScienceofSpeed Link G4X ECU, S2000 2006–09 (product page) | https://www.scienceofspeed.com/s2000-2000-09/scienceofspeed-link-g4x-ecu-s2000-2006-09-enpp-3822.html | archive | 2026-10-05 | 643bc0efd6d7 |
| 3 | forum | rusEFI Mazda Miata 2002 engine wiring | https://github.com/rusefi/rusefi/wiki/Mazda-Miata-2002 | archive | 2026-10-05 | cc3cae670408 |
| 2 | forum | Link forum: dbw wiring (07/08 S2000, ViPEC V88) | https://forums.linkecu.com/topic/313-dbw-wiring/ | — | 2026-10-05 | b788a1b47b9e |