AP2 2006–09 (F22C1, DBW) → Haltech Nexus S3 HT-213000 (auto)
AP2 2006–09 (F22C1, DBW) — Haltech — Nexus S3
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-12
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 | none |
| Size of the job | 71 wires · 12 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 | SP-14V-1 | NEXUSS3-A-18 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | NEXUSS3-A-25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-8 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-A-9 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-E-3 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | NEXUSS3-A-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | NEXUSS3-A-11 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-A-23 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-A-24 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-E-4 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | TB-J-GND | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | NEXUSS3-C-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-A-20 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-A-21 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-E-5 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | TB-J-VCC | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-5V1-1 | NEXUSS3-C-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-7 | NEXUSS3-C-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | SP-0V-1 | NEXUSS3-C-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-6 | NEXUSS3-C-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | SP-0V-1 | NEXUSS3-C-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-1 | NEXUSS3-C-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-16 | NEXUSS3-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-15 | NEXUSS3-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A-14 | NEXUSS3-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-13 | NEXUSS3-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-B-5 | NEXUSS3-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-B-4 | NEXUSS3-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-B-3 | NEXUSS3-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-B-2 | NEXUSS3-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | TB-J-M- | NEXUSS3-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | TB-J-M+ | NEXUSS3-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-E-17 | NEXUSS3-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-E-7 | NEXUSS3-A-9 | 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- | NEXUSS3-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-30 | NEXUSS3-C-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-25 | NEXUSS3-C-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-26 | NEXUSS3-C-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-B-8 | NEXUSS3-C-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | TB-J-TPS1 | NEXUSS3-C-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | TB-J-TPS2 | NEXUSS3-C-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-E-9 | NEXUSS3-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-D-15 | NEXUSS3-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-E-12 | NEXUSS3-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-E-18 | NEXUSS3-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-E-8 | NEXUSS3-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-E-21 | NEXUSS3-C-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-A-10 | NEXUSS3-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-B-15 | NEXUSS3-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-B-18 | NEXUSS3-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-B-21 | NEXUSS3-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-E-20 | NEXUSS3-C-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-E-1 | NEXUSS3-C-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-B-17 | NEXUSS3-C-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-B-13 | NEXUSS3-C-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-E-14 | NEXUSS3-C-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-A-18 | NEXUSS3-C-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-B-11 | NEXUSS3-C-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-D-1 | NEXUSS3-C-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-D-4 | NEXUSS3-C-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W68 | OEM-D-7 | NEXUSS3-C-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W69 | OEM-D-8 | NEXUSS3-C-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W70 | OEM-E-11 | NEXUSS3-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W71 | OEM-E-24 | NEXUSS3-A-24 | 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 | NEXUSS3-A-18 | NEXUSS3-A-10 | open (OL) | +12 V supply must not touch power ground | |
| 2 | NEXUSS3-A-18 | NEXUSS3-C-2 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | NEXUSS3-C-25 | NEXUSS3-C-2 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 4 | NEXUSS3-A-10 | NEXUSS3-C-25 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | NEXUSS3-A-10 | RLY1-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 6 | NEXUSS3-A-18 | NEXUSS3-C-25 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 7 | NEXUSS3-C-2 | RLY1-R-OUT | open (OL) | sensor ground must not touch +12 V supply | |
| 8 | NEXUSS3-C-25 | 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
NEXUSS3-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 | — | W31 | — | 0.5 | OEM-B-5 | — | — | — |
| 10 | Battery ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | Battery ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 12 | DPO 2 | — | W42 | — | 0.5 | RLY1-R-COIL- | — | — | — |
| 13 | Ignition switch input | — | W49 | — | 0.5 | OEM-E-9 | — | — | — |
| 14 | DPO 3 | — | W50 | — | 0.5 | OEM-D-15 | — | — | — |
| 15 | DPO 4 | — | W51 | — | 0.5 | OEM-E-12 | — | — | — |
| 16 | DPO 5 | — | W52 | — | 0.5 | OEM-E-18 | — | — | — |
| 17 | DPO 6 | — | W53 | — | 0.5 | OEM-E-8 | — | — | — |
| 18 | +12V switched input | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 19 | HBO 1 | — | W36 | — | 0.5 | TB-J-M+ | — | — | — |
| 2 | Injector 2 | — | W32 | — | 0.5 | OEM-B-4 | — | — | — |
| 20 | HBO 2 | — | W35 | — | 0.5 | TB-J-M- | — | — | — |
| 21 | HBO 3 | — | — | — | — | — | — | — | — |
| 22 | HBO 4 | — | — | — | — | — | — | — | — |
| 23 | CAN 1 High | — | W70 | — | 0.5 | OEM-E-11 | — | — | — |
| 24 | CAN 1 Low | — | W71 | — | 0.5 | OEM-E-24 | — | — | — |
| 25 | +12V switched input | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 26 | ECR output | — | W37 | — | 0.5 | OEM-E-17 | — | — | — |
| 27 | Ignition 1 | — | W27 | — | 0.5 | OEM-A-16 | — | — | — |
| 28 | Ignition 2 | — | W28 | — | 0.5 | OEM-A-15 | — | — | — |
| 29 | Ignition 3 | — | W29 | — | 0.5 | OEM-A-14 | — | — | — |
| 3 | Injector 3 | — | W33 | — | 0.5 | OEM-B-3 | — | — | — |
| 30 | Ignition 4 | — | W30 | — | 0.5 | OEM-A-13 | — | — | — |
| 31 | Ignition 5 | — | — | — | — | — | — | — | — |
| 32 | Ignition 6 | — | — | — | — | — | — | — | — |
| 33 | Ignition 7 | — | — | — | — | — | — | — | — |
| 34 | Ignition 8 | — | — | — | — | — | — | — | — |
| 4 | Injector 4 | — | W34 | — | 0.5 | OEM-B-2 | — | — | — |
| 5 | Injector 5 | — | W55 | — | 0.5 | OEM-A-10 | — | — | — |
| 6 | Injector 6 | — | W56 | — | 0.5 | OEM-B-15 | — | — | — |
| 7 | Injector 7 | — | W57 | — | 0.5 | OEM-B-18 | — | — | — |
| 8 | Injector 8 | — | W58 | — | 0.5 | OEM-B-21 | — | — | — |
| 9 | DPO 1 | — | W38 | — | 0.5 | OEM-E-7 | — | — | — |
NEXUSS3-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Trigger + | — | W22 | — | 0.5 | OEM-A-7 | — | — | — |
| 10 | AVI 1 | — | W43 | — | 0.5 | OEM-A-30 | — | — | — |
| 11 | AVI 2 | — | W44 | — | 0.5 | OEM-A-25 | — | — | — |
| 12 | AVI 3 | — | W45 | — | 0.5 | OEM-A-26 | — | — | — |
| 13 | AVI 4 | — | W46 | — | 0.5 | OEM-B-8 | — | — | — |
| 14 | AVI 5 | — | W47 | — | 0.5 | TB-J-TPS1 | — | — | — |
| 15 | AVI 6 | — | W48 | — | 0.5 | TB-J-TPS2 | — | — | — |
| 16 | AVI 7 | — | W59 | — | 0.5 | OEM-E-20 | — | — | — |
| 17 | AVI 8 | — | W60 | — | 0.5 | OEM-E-1 | — | — | — |
| 18 | AVI 9 | — | W61 | — | 0.5 | OEM-B-17 | — | — | — |
| 19 | SPI 5 | — | W68 | — | 0.5 | OEM-D-7 | — | — | — |
| 2 | Trigger - | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 20 | SPI 6 | — | W69 | — | 0.5 | OEM-D-8 | — | — | — |
| 21 | CAN 2 High | — | — | — | — | — | — | — | — |
| 22 | CAN 2 Low | — | — | — | — | — | — | — | — |
| 23 | Knock 1 | — | W26 | — | 0.5 | OEM-A-1 | — | — | — |
| 24 | Knock 2 | — | — | — | — | — | — | — | — |
| 25 | +5V | — | W21 | — | 0.5 | SP-5V1-1 | — | — | — |
| 26 | Signal ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 27 | AVI 10 | — | W62 | — | 0.5 | OEM-B-13 | — | — | — |
| 28 | AVI 11 | — | W63 | — | 0.5 | OEM-E-14 | — | — | — |
| 29 | WBI 1 Heater + | — | — | — | — | — | — | — | — |
| 3 | Home + | — | W24 | — | 0.5 | OEM-A-6 | — | — | — |
| 30 | WBI 1 Input | — | — | — | — | — | — | — | — |
| 31 | WBI 1 Pump | — | — | — | — | — | — | — | — |
| 32 | WBI 1 Nernst | — | — | — | — | — | — | — | — |
| 33 | WBI 1 Heater - | — | W54 | — | 0.5 | OEM-E-21 | — | — | — |
| 34 | WBI 1 Cal | — | — | — | — | — | — | — | — |
| 4 | Home - | — | W25 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | SPI 1 | — | W64 | — | 0.5 | OEM-A-18 | — | — | — |
| 6 | SPI 2 | — | W65 | — | 0.5 | OEM-B-11 | — | — | — |
| 7 | SPI 3 | — | W66 | — | 0.5 | OEM-D-1 | — | — | — |
| 8 | SPI 4 | — | W67 | — | 0.5 | OEM-D-4 | — | — | — |
| 9 | +8V | — | — | — | — | — | — | — | — |
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Knock sensor | — | W26 | — | 0.5 | NEXUSS3-C-23 | — | — | — |
| 2 | Ignition power 2 | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Ignition power 1 | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Power ground 2 | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Power ground 1 | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Cam position sensor (T2) | — | W24 | — | 0.5 | NEXUSS3-C-3 | — | — | — |
| 7 | Crank position sensor (T1) | — | W22 | — | 0.5 | NEXUSS3-C-1 | — | — | — |
| 8 | Logic ground 2 | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 9 | Logic ground 1 | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | A/F sensor heater | — | W55 | — | 0.5 | NEXUSS3-A-5 | — | — | — |
| 11 | Unused cavity | — | — | — | — | — | — | — | — |
| 12 | Unused cavity | — | — | — | — | — | — | — | — |
| 13 | Ignition coil 4 | — | W30 | — | 0.5 | NEXUSS3-A-30 | — | — | — |
| 14 | Ignition coil 3 | — | W29 | — | 0.5 | NEXUSS3-A-29 | — | — | — |
| 15 | Ignition coil 2 | — | W28 | — | 0.5 | NEXUSS3-A-28 | — | — | — |
| 16 | Ignition coil 1 | — | W27 | — | 0.5 | NEXUSS3-A-27 | — | — | — |
| 17 | Unused cavity | — | — | — | — | — | — | — | — |
| 18 | Vehicle speed sensor | — | W64 | — | 0.5 | NEXUSS3-C-5 | — | — | — |
| 19 | Unused cavity | — | — | — | — | — | — | — | — |
| 20 | Sensor voltage 2 | — | W17 | — | 0.5 | SP-5V1-1 | — | — | — |
| 21 | Sensor voltage 1 | — | W18 | — | 0.5 | SP-5V1-1 | — | — | — |
| 22 | Unused cavity | — | — | — | — | — | — | — | — |
| 23 | Sensor ground 2 | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Sensor ground 1 | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 25 | Accelerator pedal position B | — | W44 | — | 0.5 | NEXUSS3-C-11 | — | — | — |
| 26 | Accelerator pedal position A | — | W45 | — | 0.5 | NEXUSS3-C-12 | — | — | — |
| 27 | Unused cavity | — | — | — | — | — | — | — | — |
| 28 | A/F sensor signal − | — | — | — | — | — | — | — | — |
| 29 | Unused cavity | — | — | — | — | — | — | — | — |
| 30 | MAP sensor | — | W43 | — | 0.5 | NEXUSS3-C-10 | — | — | — |
| 31 | A/F sensor signal + | — | — | — | — | — | — | — | — |
OEM-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Unused cavity | — | — | — | — | — | — | — | — |
| 2 | Injector 4 | — | W34 | — | 0.5 | NEXUSS3-A-4 | — | — | — |
| 3 | Injector 3 | — | W33 | — | 0.5 | NEXUSS3-A-3 | — | — | — |
| 4 | Injector 2 | — | W32 | — | 0.5 | NEXUSS3-A-2 | — | — | — |
| 5 | Injector 1 | — | W31 | — | 0.5 | NEXUSS3-A-1 | — | — | — |
| 6 | VTEC solenoid | — | W39 | — | 0.5 | RLY1-R-OUT | — | — | — |
| 7 | Unused cavity | — | — | — | — | — | — | — | — |
| 8 | Coolant temp sensor | — | W46 | — | 0.5 | NEXUSS3-C-13 | — | — | — |
| 9 | Unused cavity | — | — | — | — | — | — | — | — |
| 10 | Alternator L signal | — | — | — | — | — | — | — | — |
| 11 | VTEC oil pressure switch | — | W65 | — | 0.5 | NEXUSS3-C-6 | — | — | — |
| 12 | Unused cavity | — | — | — | — | — | — | — | — |
| 13 | Alternator FR signal | — | W62 | — | 0.5 | NEXUSS3-C-27 | — | — | — |
| 14 | Unused cavity | — | — | — | — | — | — | — | — |
| 15 | Engine mount control solenoid | — | W56 | — | 0.5 | NEXUSS3-A-6 | — | — | — |
| 16 | Unused cavity | — | — | — | — | — | — | — | — |
| 17 | Intake air temp sensor | — | W61 | — | 0.5 | NEXUSS3-C-18 | — | — | — |
| 18 | Alternator control | — | W57 | — | 0.5 | NEXUSS3-A-7 | — | — | — |
| 19 | Throttle actuator command to throttle control module (SEFD) | — | — | — | — | — | — | — | — |
| 20 | Throttle actuator command to throttle control module (SEDF) | — | — | — | — | — | — | — | — |
| 21 | Evap canister purge valve | — | W58 | — | 0.5 | NEXUSS3-A-8 | — | — | — |
| 22 | Unused cavity | — | — | — | — | — | — | — | — |
| 23 | Unused cavity | — | — | — | — | — | — | — | — |
| 24 | Unused cavity | — | — | — | — | — | — | — | — |
OEM-D
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Cruise set switch | — | W66 | — | 0.5 | NEXUSS3-C-7 | — | — | — |
| 2 | Unused cavity | — | — | — | — | — | — | — | — |
| 3 | Unused cavity | — | — | — | — | — | — | — | — |
| 4 | Cruise main switch | — | W67 | — | 0.5 | NEXUSS3-C-8 | — | — | — |
| 5 | Unused cavity | — | — | — | — | — | — | — | — |
| 6 | Unused cavity | — | — | — | — | — | — | — | — |
| 7 | Cruise resume switch | — | W68 | — | 0.5 | NEXUSS3-C-19 | — | — | — |
| 8 | Brake pedal position switch | — | W69 | — | 0.5 | NEXUSS3-C-20 | — | — | — |
| 9 | Cruise clutch signal | — | — | — | — | — | — | — | — |
| 10 | Unused cavity | — | — | — | — | — | — | — | — |
| 11 | Unused cavity | — | — | — | — | — | — | — | — |
| 12 | Unused cavity | — | — | — | — | — | — | — | — |
| 13 | Unused cavity | — | — | — | — | — | — | — | — |
| 14 | Unused cavity | — | — | — | — | — | — | — | — |
| 15 | Throttle actuator relay | — | W50 | — | 0.5 | NEXUSS3-A-14 | — | — | — |
| 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 | — | W60 | — | 0.5 | NEXUSS3-C-17 | — | — | — |
| 2 | Unused cavity | — | — | — | — | — | — | — | — |
| 3 | Logic ground 3 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Sensor ground 3 | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Sensor voltage 3 | — | W19 | — | 0.5 | SP-5V1-1 | — | — | — |
| 6 | Unused cavity | — | — | — | — | — | — | — | — |
| 7 | Main relay control | — | W38 | — | 0.5 | NEXUSS3-A-9 | — | — | — |
| 8 | A/F sensor heater relay | — | W53 | — | 0.5 | NEXUSS3-A-17 | — | — | — |
| 9 | Ignition signal | — | W49 | — | 0.5 | NEXUSS3-A-13 | — | — | — |
| 10 | Unused cavity | — | — | — | — | — | — | — | — |
| 11 | CAN H | — | W70 | — | 0.5 | NEXUSS3-A-23 | — | — | — |
| 12 | Radiator fan control | — | W51 | — | 0.5 | NEXUSS3-A-15 | — | — | — |
| 13 | Multiplex communication | — | — | — | — | — | — | — | — |
| 14 | Fuel tank pressure sensor | — | W63 | — | 0.5 | NEXUSS3-C-28 | — | — | — |
| 15 | Electrical load detector | — | — | — | — | — | — | — | — |
| 16 | Power steering load detector | — | — | — | — | — | — | — | — |
| 17 | Fuel pump relay | — | W37 | — | 0.5 | NEXUSS3-A-26 | — | — | — |
| 18 | A/C clutch relay | — | W52 | — | 0.5 | NEXUSS3-A-16 | — | — | — |
| 19 | Evap canister vent shut valve | — | — | — | — | — | — | — | — |
| 20 | Secondary O2 sensor | — | W59 | — | 0.5 | NEXUSS3-C-16 | — | — | — |
| 21 | Secondary O2 heater | — | W54 | — | 0.5 | NEXUSS3-C-33 | — | — | — |
| 22 | Brake pedal switch | — | — | — | — | — | — | — | — |
| 23 | Unused cavity | — | — | — | — | — | — | — | — |
| 24 | CAN L | — | W71 | — | 0.5 | NEXUSS3-A-24 | — | — | — |
| 25 | Engine speed pulse (tacho) | — | — | — | — | — | — | — | — |
| 26 | Vehicle speed output | — | — | — | — | — | — | — | — |
| 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 | NEXUSS3-A-12 | — | — | — |
| 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 | — | — | W12 | — | 0.5 | OEM-A-23 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-A-24 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-E-4 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | TB-J-GND | — | — | — |
| 1 | — | — | W16 | — | 0.5 | NEXUSS3-C-26 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | NEXUSS3-C-2 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | NEXUSS3-C-4 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W2 | — | 0.85 | OEM-A-3 | — | — | — |
| 1 | — | — | W1 | — | 0.85 | OEM-A-2 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | NEXUSS3-A-18 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | NEXUSS3-A-25 | — | — | — |
| 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 | — | — | W17 | — | 0.5 | OEM-A-20 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-A-21 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-E-5 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | TB-J-VCC | — | — | — |
| 1 | — | — | W21 | — | 0.5 | NEXUSS3-C-25 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W6 | — | 0.85 | OEM-A-5 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-A-4 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-8 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-A-9 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-E-3 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | NEXUSS3-A-10 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | NEXUSS3-A-11 | — | — | — |
TB-J
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| TPS1 | Throttle position 1 | — | W47 | — | 0.5 | NEXUSS3-C-14 | — | — | — |
| VCC | Throttle sensor 5V supply | — | W20 | — | 0.5 | SP-5V1-1 | — | — | — |
| TPS2 | Throttle position 2 | — | W48 | — | 0.5 | NEXUSS3-C-15 | — | — | — |
| GND | Throttle sensor ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| M- | Throttle motor − | — | W35 | — | 0.5 | NEXUSS3-A-20 | — | — | — |
| M+ | Throttle motor + | — | W36 | — | 0.5 | NEXUSS3-A-19 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Knock sensor | knock_in | NEXUSS3-C-23 | Knock 1 | knock_in | single_source | |
| OEM-A-10 | A/F sensor heater | low_side_out | NEXUSS3-A-5 | Injector 5 | injector_out | single_source | |
| OEM-A-11 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-12 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-13 | Ignition coil 4 | ignition_out | NEXUSS3-A-30 | Ignition 4 | ignition_out | single_source | |
| OEM-A-14 | Ignition coil 3 | ignition_out | NEXUSS3-A-29 | Ignition 3 | ignition_out | single_source | |
| OEM-A-15 | Ignition coil 2 | ignition_out | NEXUSS3-A-28 | Ignition 2 | ignition_out | single_source | |
| OEM-A-16 | Ignition coil 1 | ignition_out | NEXUSS3-A-27 | Ignition 1 | ignition_out | single_source | |
| OEM-A-17 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-18 | Vehicle speed sensor | digital_in | NEXUSS3-C-5 | SPI 1 | digital_in | single_source | |
| OEM-A-19 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-2 | Ignition power 2 | power_in | NEXUSS3-A-18 + NEXUSS3-A-25 + RLY1-R-COIL+ + RLY1-R-IN | +12V switched input + +12V switched input + 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 | NEXUSS3-C-25 + TB-J-VCC | +5V + Throttle sensor 5V supply | power_in + vref | corroborated | |
| OEM-A-21 | Sensor voltage 1 | vref | NEXUSS3-C-25 + TB-J-VCC | +5V + Throttle sensor 5V supply | power_in + vref | single_source | |
| OEM-A-22 | Unused cavity | — | — | — | — | unverified | |
| OEM-A-23 | Sensor ground 2 | sensor_ground | NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4 + TB-J-GND | Trigger - + Signal ground + Home - + Throttle sensor ground | sensor_ground + trigger_in | corroborated | |
| OEM-A-24 | Sensor ground 1 | sensor_ground | NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4 + TB-J-GND | Trigger - + Signal ground + Home - + Throttle sensor ground | sensor_ground + trigger_in | single_source | |
| OEM-A-25 | Accelerator pedal position B | analog_in | NEXUSS3-C-11 | AVI 2 | analog_in | corroborated | |
| OEM-A-26 | Accelerator pedal position A | analog_in | NEXUSS3-C-12 | AVI 3 | 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 | NEXUSS3-A-18 + NEXUSS3-A-25 + RLY1-R-COIL+ + RLY1-R-IN | +12V switched input + +12V switched input + 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 | NEXUSS3-C-10 | AVI 1 | analog_in | single_source | |
| OEM-A-31 | A/F sensor signal + | — | — | — | — | single_source | |
| OEM-A-4 | Power ground 2 | ground | NEXUSS3-A-10 + NEXUSS3-A-11 | Battery ground + Battery ground | ground | single_source | |
| OEM-A-5 | Power ground 1 | ground | NEXUSS3-A-10 + NEXUSS3-A-11 | Battery ground + Battery ground | ground | single_source | |
| OEM-A-6 | Cam position sensor (T2) | trigger_in | NEXUSS3-C-3 | Home + | trigger_in | single_source | |
| OEM-A-7 | Crank position sensor (T1) | trigger_in | NEXUSS3-C-1 | Trigger + | trigger_in | single_source | |
| OEM-A-8 | Logic ground 2 | ground | NEXUSS3-A-10 + NEXUSS3-A-11 | Battery ground + Battery ground | ground | single_source | |
| OEM-A-9 | Logic ground 1 | ground | NEXUSS3-A-10 + NEXUSS3-A-11 | Battery ground + Battery ground | ground | single_source | |
| OEM-B-1 | Unused cavity | — | — | — | — | unverified | |
| OEM-B-10 | Alternator L signal | — | — | — | — | single_source | |
| OEM-B-11 | VTEC oil pressure switch | digital_in | NEXUSS3-C-6 | SPI 2 | digital_in | single_source | |
| OEM-B-12 | Unused cavity | — | — | — | — | unverified | |
| OEM-B-13 | Alternator FR signal | analog_in | NEXUSS3-C-27 | AVI 10 | analog_in | single_source | |
| OEM-B-14 | Unused cavity | — | — | — | — | unverified | |
| OEM-B-15 | Engine mount control solenoid | low_side_out | NEXUSS3-A-6 | Injector 6 | injector_out | single_source | |
| OEM-B-16 | Unused cavity | — | — | — | — | unverified | |
| OEM-B-17 | Intake air temp sensor | temp_in | NEXUSS3-C-18 | AVI 9 | analog_in | single_source | |
| OEM-B-18 | Alternator control | low_side_out | NEXUSS3-A-7 | Injector 7 | injector_out | single_source | |
| OEM-B-19 | Throttle actuator command to throttle control module (SEFD) | — | — | — | — | conflict | |
| OEM-B-2 | Injector 4 | injector_out | NEXUSS3-A-4 | 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 | NEXUSS3-A-8 | Injector 8 | injector_out | single_source | |
| OEM-B-22 | Unused cavity | — | — | — | — | unverified | |
| OEM-B-23 | Unused cavity | — | — | — | — | unverified | |
| OEM-B-24 | Unused cavity | — | — | — | — | unverified | |
| OEM-B-3 | Injector 3 | injector_out | NEXUSS3-A-3 | Injector 3 | injector_out | single_source | |
| OEM-B-4 | Injector 2 | injector_out | NEXUSS3-A-2 | Injector 2 | injector_out | single_source | |
| OEM-B-5 | Injector 1 | injector_out | NEXUSS3-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-7 | Unused cavity | — | — | — | — | unverified | |
| OEM-B-8 | Coolant temp sensor | temp_in | NEXUSS3-C-13 | AVI 4 | analog_in | single_source | |
| OEM-B-9 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-1 | Cruise set switch | digital_in | NEXUSS3-C-7 | SPI 3 | 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 | NEXUSS3-A-14 | DPO 3 | 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 | NEXUSS3-C-8 | SPI 4 | digital_in | single_source | |
| OEM-D-5 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-6 | Unused cavity | — | — | — | — | unverified | |
| OEM-D-7 | Cruise resume switch | digital_in | NEXUSS3-C-19 | SPI 5 | digital_in | single_source | |
| OEM-D-8 | Brake pedal position switch | digital_in | NEXUSS3-C-20 | SPI 6 | digital_in | single_source | |
| OEM-D-9 | Cruise clutch signal | digital_in | — | — | — | single_source | |
| OEM-E-1 | Coolant temp sensor 2 | temp_in | NEXUSS3-C-17 | AVI 8 | analog_in | single_source | |
| OEM-E-10 | Unused cavity | — | — | — | — | unverified | |
| OEM-E-11 | CAN H | can_h | NEXUSS3-A-23 | CAN 1 High | can_h | single_source | |
| OEM-E-12 | Radiator fan control | low_side_out | NEXUSS3-A-15 | DPO 4 | low_side_out | single_source | |
| OEM-E-13 | Multiplex communication | serial | — | — | — | single_source | |
| OEM-E-14 | Fuel tank pressure sensor | analog_in | NEXUSS3-C-28 | AVI 11 | 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 | NEXUSS3-A-26 | ECR output | low_side_out | single_source | |
| OEM-E-18 | A/C clutch relay | low_side_out | NEXUSS3-A-16 | DPO 5 | 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 | NEXUSS3-C-16 | AVI 7 | analog_in | single_source | |
| OEM-E-21 | Secondary O2 heater | low_side_out | NEXUSS3-C-33 | WBI 1 Heater - | low_side_out | single_source | |
| OEM-E-22 | Brake pedal switch | digital_in | — | — | — | single_source | |
| OEM-E-23 | Unused cavity | — | — | — | — | unverified | |
| OEM-E-24 | CAN L | can_l | NEXUSS3-A-24 | CAN 1 Low | can_l | single_source | |
| OEM-E-25 | Engine speed pulse (tacho) | tacho_out | — | — | — | single_source | |
| OEM-E-26 | Vehicle speed output | tacho_out | — | — | — | single_source | |
| 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 | NEXUSS3-A-10 + NEXUSS3-A-11 | Battery ground + Battery ground | ground | single_source | |
| OEM-E-30 | Write enable signal | — | — | — | — | single_source | |
| OEM-E-31 | Unused cavity | — | — | — | — | unverified | |
| OEM-E-4 | Sensor ground 3 | sensor_ground | NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4 + TB-J-GND | Trigger - + Signal ground + Home - + Throttle sensor ground | sensor_ground + trigger_in | corroborated | |
| OEM-E-5 | Sensor voltage 3 | vref | NEXUSS3-C-25 + TB-J-VCC | +5V + Throttle sensor 5V supply | power_in + vref | corroborated | |
| OEM-E-6 | Unused cavity | — | — | — | — | unverified | |
| OEM-E-7 | Main relay control | low_side_out | NEXUSS3-A-9 | DPO 1 | low_side_out | single_source | |
| OEM-E-8 | A/F sensor heater relay | low_side_out | NEXUSS3-A-17 | DPO 6 | low_side_out | single_source | |
| OEM-E-9 | Ignition signal | digital_in | NEXUSS3-A-13 | Ignition switch input | digital_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 | SP-14V-1 | NEXUSS3-A-18 | 0.85 | no route | +12V switched input | — | |
| W4 | SP-14V-1 | NEXUSS3-A-25 | 0.85 | no route | +12V switched input | — | |
| W5 | OEM-A-4 | SP-GND-1 | 0.85 | no route | Power ground 2 | — | |
| W6 | OEM-A-5 | SP-GND-1 | 0.85 | no route | Power ground 1 | — | |
| W7 | OEM-A-8 | SP-GND-1 | 0.85 | no route | Logic ground 2 | — | |
| W8 | OEM-A-9 | SP-GND-1 | 0.85 | no route | Logic ground 1 | — | |
| W9 | OEM-E-3 | SP-GND-1 | 0.85 | no route | Logic ground 3 | — | |
| W10 | SP-GND-1 | NEXUSS3-A-10 | 0.85 | no route | Battery ground | — | |
| W11 | SP-GND-1 | NEXUSS3-A-11 | 0.85 | no route | Battery ground | — | |
| W12 | OEM-A-23 | SP-0V-1 | 0.5 | no route | Sensor ground 2 | — | |
| W13 | OEM-A-24 | SP-0V-1 | 0.5 | no route | Sensor ground 1 | — | |
| W14 | OEM-E-4 | SP-0V-1 | 0.5 | no route | Sensor ground 3 | — | |
| W15 | TB-J-GND | SP-0V-1 | 0.5 | no route | Throttle sensor ground | — | |
| W16 | SP-0V-1 | NEXUSS3-C-26 | 0.5 | no route | Signal ground | — | |
| W17 | OEM-A-20 | SP-5V1-1 | 0.5 | no route | Sensor voltage 2 | — | |
| W18 | OEM-A-21 | SP-5V1-1 | 0.5 | no route | Sensor voltage 1 | — | |
| W19 | OEM-E-5 | SP-5V1-1 | 0.5 | no route | Sensor voltage 3 | — | |
| W20 | TB-J-VCC | SP-5V1-1 | 0.5 | no route | Throttle sensor 5V supply | — | |
| W21 | SP-5V1-1 | NEXUSS3-C-25 | 0.5 | no route | +5V | — | |
| W22 | OEM-A-7 | NEXUSS3-C-1 | 0.5 | no route | Crank position sensor (T1) | — | |
| W23 | SP-0V-1 | NEXUSS3-C-2 | 0.5 | no route | Trigger - | — | |
| W24 | OEM-A-6 | NEXUSS3-C-3 | 0.5 | no route | Cam position sensor (T2) | — | |
| W25 | SP-0V-1 | NEXUSS3-C-4 | 0.5 | no route | Home - | — | |
| W26 | OEM-A-1 | NEXUSS3-C-23 | 0.5 | no route | Knock sensor | — | |
| W27 | OEM-A-16 | NEXUSS3-A-27 | 0.5 | no route | Ignition coil 1 | — | |
| W28 | OEM-A-15 | NEXUSS3-A-28 | 0.5 | no route | Ignition coil 2 | — | |
| W29 | OEM-A-14 | NEXUSS3-A-29 | 0.5 | no route | Ignition coil 3 | — | |
| W30 | OEM-A-13 | NEXUSS3-A-30 | 0.5 | no route | Ignition coil 4 | — | |
| W31 | OEM-B-5 | NEXUSS3-A-1 | 0.5 | no route | Injector 1 | — | |
| W32 | OEM-B-4 | NEXUSS3-A-2 | 0.5 | no route | Injector 2 | — | |
| W33 | OEM-B-3 | NEXUSS3-A-3 | 0.5 | no route | Injector 3 | — | |
| W34 | OEM-B-2 | NEXUSS3-A-4 | 0.5 | no route | Injector 4 | — | |
| W35 | TB-J-M- | NEXUSS3-A-20 | 0.5 | no route | Throttle motor − | — | |
| W36 | TB-J-M+ | NEXUSS3-A-19 | 0.5 | no route | Throttle motor + | — | |
| W37 | OEM-E-17 | NEXUSS3-A-26 | 0.5 | no route | Fuel pump relay | — | |
| W38 | OEM-E-7 | NEXUSS3-A-9 | 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- | NEXUSS3-A-12 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W43 | OEM-A-30 | NEXUSS3-C-10 | 0.5 | no route | MAP sensor | — | |
| W44 | OEM-A-25 | NEXUSS3-C-11 | 0.5 | no route | Accelerator pedal position B | — | |
| W45 | OEM-A-26 | NEXUSS3-C-12 | 0.5 | no route | Accelerator pedal position A | — | |
| W46 | OEM-B-8 | NEXUSS3-C-13 | 0.5 | no route | Coolant temp sensor | — | |
| W47 | TB-J-TPS1 | NEXUSS3-C-14 | 0.5 | no route | Throttle position 1 | — | |
| W48 | TB-J-TPS2 | NEXUSS3-C-15 | 0.5 | no route | Throttle position 2 | — | |
| W49 | OEM-E-9 | NEXUSS3-A-13 | 0.5 | no route | Ignition signal | — | |
| W50 | OEM-D-15 | NEXUSS3-A-14 | 0.5 | no route | Throttle actuator relay | — | |
| W51 | OEM-E-12 | NEXUSS3-A-15 | 0.5 | no route | Radiator fan control | — | |
| W52 | OEM-E-18 | NEXUSS3-A-16 | 0.5 | no route | A/C clutch relay | — | |
| W53 | OEM-E-8 | NEXUSS3-A-17 | 0.5 | no route | A/F sensor heater relay | — | |
| W54 | OEM-E-21 | NEXUSS3-C-33 | 0.5 | no route | Secondary O2 heater | — | |
| W55 | OEM-A-10 | NEXUSS3-A-5 | 0.5 | no route | A/F sensor heater | — | |
| W56 | OEM-B-15 | NEXUSS3-A-6 | 0.5 | no route | Engine mount control solenoid | — | |
| W57 | OEM-B-18 | NEXUSS3-A-7 | 0.5 | no route | Alternator control | — | |
| W58 | OEM-B-21 | NEXUSS3-A-8 | 0.5 | no route | Evap canister purge valve | — | |
| W59 | OEM-E-20 | NEXUSS3-C-16 | 0.5 | no route | Secondary O2 sensor | — | |
| W60 | OEM-E-1 | NEXUSS3-C-17 | 0.5 | no route | Coolant temp sensor 2 | — | |
| W61 | OEM-B-17 | NEXUSS3-C-18 | 0.5 | no route | Intake air temp sensor | — | |
| W62 | OEM-B-13 | NEXUSS3-C-27 | 0.5 | no route | Alternator FR signal | — | |
| W63 | OEM-E-14 | NEXUSS3-C-28 | 0.5 | no route | Fuel tank pressure sensor | — | |
| W64 | OEM-A-18 | NEXUSS3-C-5 | 0.5 | no route | Vehicle speed sensor | — | |
| W65 | OEM-B-11 | NEXUSS3-C-6 | 0.5 | no route | VTEC oil pressure switch | — | |
| W66 | OEM-D-1 | NEXUSS3-C-7 | 0.5 | no route | Cruise set switch | — | |
| W67 | OEM-D-4 | NEXUSS3-C-8 | 0.5 | no route | Cruise main switch | — | |
| W68 | OEM-D-7 | NEXUSS3-C-19 | 0.5 | no route | Cruise resume switch | — | |
| W69 | OEM-D-8 | NEXUSS3-C-20 | 0.5 | no route | Brake pedal position switch | — | |
| W70 | OEM-E-11 | NEXUSS3-A-23 | 0.5 | no route | CAN H | — | |
| W71 | OEM-E-24 | NEXUSS3-A-24 | 0.5 | no route | CAN L | — |
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 + | — | NEXUSS3-A-19 | HBO 1 | hbridge | — |
| dbw_motor | TB | Throttle motor − | — | NEXUSS3-A-20 | HBO 2 | hbridge | — |
| dbw_tps | TB | Throttle position 1 | 0_5v | NEXUSS3-C-14 | AVI 5 | analog_0_5 | — |
| dbw_tps | TB | Throttle position 2 | 0_5v | NEXUSS3-C-15 | AVI 6 | analog_0_5 | — |
Findings
Open (13)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | DBW_SHARED_5V | NEXUSS3-C-25 + OEM-A-20 + OEM-A-21 + OEM-E-5 + SP-5V1-1 + TB-J-VCC | 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 (NEXUSS3-C-25). On a drive-by-wire car the OEM splits them so one short or fault can't corrupt both throttle/pedal tracks at once. Nexus S3 has 1 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 | NEXUSS3-A-26 | NEXUSS3-A-26 "ECR output" drives OEM-E-17 Fuel pump relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| 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 | SUPPLY_GROUP | NEXUSS3-C-25 + OEM-A-20 + OEM-A-21 + OEM-E-5 + SP-5V1-1 + TB-J-VCC | 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 | NEXUSS3-C-26 ↔ NEXUSS3-C-4 | NEXUSS3-C-26 "Signal ground" [sensor_ground] is wired to NEXUSS3-C-4 "Home -" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | NET_FAMILY | OEM-A-10 ↔ NEXUSS3-A-5 | OEM-A-10 "A/F sensor heater" [low_side_out] is wired to NEXUSS3-A-5 "Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-B-15 ↔ NEXUSS3-A-6 | OEM-B-15 "Engine mount control solenoid" [low_side_out] is wired to NEXUSS3-A-6 "Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-B-17 ↔ NEXUSS3-C-18 | OEM-B-17 "Intake air temp sensor" [temp_in] is wired to NEXUSS3-C-18 "AVI 9" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-B-18 ↔ NEXUSS3-A-7 | OEM-B-18 "Alternator control" [low_side_out] is wired to NEXUSS3-A-7 "Injector 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-B-21 ↔ NEXUSS3-A-8 | OEM-B-21 "Evap canister purge valve" [low_side_out] is wired to NEXUSS3-A-8 "Injector 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-B-8 ↔ NEXUSS3-C-13 | OEM-B-8 "Coolant temp sensor" [temp_in] is wired to NEXUSS3-C-13 "AVI 4" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-E-1 ↔ NEXUSS3-C-17 | OEM-E-1 "Coolant temp sensor 2" [temp_in] is wired to NEXUSS3-C-17 "AVI 8" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | UNMAPPED | OEM | 17 optional OEM pins are not mapped: OEM-A-28 A/F sensor signal −; OEM-A-31 A/F sensor signal +; OEM-B-10 Alternator L signal; OEM-B-19 Throttle actuator command to throttle control module (SEFD); OEM-B-20 Throttle actuator command to throttle control module (SEDF); OEM-D-9 Cruise clutch signal; OEM-E-13 Multiplex communication; OEM-E-15 Electrical load detector; OEM-E-16 Power steering load detector; OEM-E-19 Evap canister vent shut valve; OEM-E-22 Brake pedal switch; OEM-E-25 Engine speed pulse (tacho); OEM-E-26 Vehicle speed output; OEM-E-27 Immobilizer code; OEM-E-28 A/C switch signal; OEM-E-29 Service check signal; OEM-E-30 Write enable signal |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Fit check: unconfirmed. Confirm these before building: - Throttle motor draws ≥ ~14 A at stall; peak/stall limit not documented for this ECU (8.0 A continuous rating) - Trigger pattern needs a workaround: derived: F22C1 (AP2) uses the same 12-tooth crank + cam F-series trigger as the confirmed F20C (AP1). Derived. Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Not wired: - OEM-E 19: Evap canister vent shut valve: no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Nexus S3 - OEM-E 25: Engine speed pulse (tacho): no free tacho/frequency_out/low_side/ls_hs on Haltech Nexus S3 - OEM-E 26: Vehicle speed output: no free frequency_out/tacho/low_side/ls_hs on Haltech Nexus S3 - OEM-E 15: Electrical load detector: no free analog_0_5 on Haltech Nexus S3 - OEM-E 16: Power steering load detector: no free analog_0_5 on Haltech Nexus S3 - OEM-D 9: Cruise clutch signal: no free switch_in/frequency_in/analog_0_5 on Haltech Nexus S3 - OEM-E 22: Brake pedal switch: no free switch_in/frequency_in/analog_0_5 on Haltech Nexus S3 - OEM-E 28: A/C switch signal: no free switch_in/frequency_in/analog_0_5 on Haltech Nexus S3 - OEM-E 13: Multiplex communication: no free k_line on Haltech Nexus S3 - 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 | Haltech: Nexus S3 Plug 'n' Play adapter QSG (Subaru WRX/STI ADM, HT-186300) — ECU Connector A & C pinout | https://www.haltech.com/product/ht-186300-nexus-s3-plug-n-play-adapter-harness/ | archive | 2026-10-05 | 3cab7cd337c2 |
| 4 | vendor_doc | Haltech: Nexus S3/S2 ECU Overview (QSG) — specifications | https://store.haltech.com/product/ht-213000-nexus-s3-ecu-only/ | archive | 2026-10-05 | 388299668207 |
| 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 |
| 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 |
| 2 | forum | Link forum: dbw wiring (07/08 S2000, ViPEC V88) | https://forums.linkecu.com/topic/313-dbw-wiring/ | — | 2026-10-05 | b788a1b47b9e |