AP1 2000–03 (F20C) → DTAFast T12 (auto)
AP1 2000–03 (F20C) — DTAFast — T12
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-09
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 | 1: read the Findings page before cutting any wire |
| Size of the job | 65 wires · 10 connectors · 6 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 3-1447221-4 |
| 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-B-1 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-B-9 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | T12-C1-31 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-B-21 | T12-C3-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-B-10 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-B-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-B-20 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-B-22 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | T12-C1-13 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | T12-C1-14 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-C-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-C-30 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-C-31 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-C-7 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | T12-C2-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | T12-C2-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-C-19 | T12-C2-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-C-28 | T12-C2-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-C-8 | T12-C2-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-C-9 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-C-20 | T12-C2-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-C-21 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-C-29 | T12-C2-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-C-4 | T12-C1-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-C-12 | T12-C1-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-C-13 | T12-C1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-C-14 | T12-C1-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B-11 | T12-C1-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-3 | T12-C1-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-B-4 | T12-C1-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-B-5 | T12-C1-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-15 | T12-C1-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-16 | T12-C1-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-17 | T12-C1-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-20 | T12-C3-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-28 | T12-C3-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-B-12 | T12-C1-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-C-1 | T12-C3-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-C-11 | T12-C3-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-B-23 | T12-C3-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-1 | T12-C3-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-12 | T12-C3-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-18 | T12-C3-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-2 | T12-C3-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-3 | T12-C3-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A-4 | T12-C3-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A-6 | T12-C1-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-C-2 | T12-C1-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-C-17 | T12-C2-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-C-27 | T12-C2-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-A-23 | T12-C2-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-C-15 | T12-C2-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-C-16 | T12-C2-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-C-26 | T12-C2-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-C-25 | T12-C2-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-A-29 | T12-C2-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-A-30 | T12-C3-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-C-24 | T12-C3-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-A-9 | T12-C2-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-C-5 | T12-C2-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-A-24 | T12-C2-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-A-26 | T12-C2-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-A-27 | T12-C2-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-A-32 | T12-C2-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-C-10 | T12-C2-15 | 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 | T12-C1-31 | T12-C1-13 | open (OL) | +12 V supply must not touch power ground | |
| 2 | T12-C1-31 | T12-C2-21 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | T12-C3-26 | T12-C2-21 | open (OL) | +12 V supply must not touch sensor ground | |
| 4 | T12-C1-13 | T12-C2-24 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | T12-C1-13 | T12-C2-9 | open (OL) | power ground must not touch 5 V sensor reference | |
| 6 | T12-C1-13 | T12-C3-26 | open (OL) | power ground must not touch +12 V supply | |
| 7 | T12-C1-31 | T12-C2-24 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 8 | T12-C1-31 | T12-C2-9 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 9 | T12-C2-21 | T12-C2-24 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 10 | T12-C2-21 | T12-C2-9 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 11 | T12-C3-26 | T12-C2-24 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 12 | T12-C3-26 | T12-C2-9 | open (OL) | +12 V supply must not touch 5 V sensor reference |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Coolant temp gauge drive | — | W41 | — | 0.5 | T12-C3-25 | — | — | — |
| 2 | Air control valve solenoid | — | W44 | — | 0.5 | T12-C3-28 | — | — | — |
| 3 | Evap bypass solenoid | — | W45 | — | 0.5 | T12-C3-29 | — | — | — |
| 4 | Evap canister vent shut valve | — | W46 | — | 0.5 | T12-C3-30 | — | — | — |
| 5 | NC | — | — | — | — | — | — | — | — |
| 6 | Evap canister purge valve | — | W47 | — | 0.5 | T12-C1-16 | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Vehicle speed sensor | — | W59 | — | 0.5 | T12-C2-2 | — | — | — |
| 10 | Service check signal | — | — | — | — | — | — | — | — |
| 11 | NC | — | — | — | — | — | — | — | — |
| 12 | Immobilizer indicator light | — | W42 | — | 0.5 | T12-C3-10 | — | — | — |
| 13 | Immobilizer enable signal | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | Fuel pump relay (USDM) | — | W32 | — | 0.5 | T12-C1-5 | — | — | — |
| 16 | Fuel pump relay (JDM) | — | W33 | — | 0.5 | T12-C1-4 | — | — | — |
| 17 | A/C clutch relay | — | W34 | — | 0.5 | T12-C1-3 | — | — | — |
| 18 | Check engine light (MIL) | — | W43 | — | 0.5 | T12-C3-4 | — | — | — |
| 19 | Tacho output | — | — | — | — | — | — | — | — |
| 20 | Radiator fan relay | — | W35 | — | 0.5 | T12-C3-22 | — | — | — |
| 21 | K-Line | — | — | — | — | — | — | — | — |
| 22 | NC | — | — | — | — | — | — | — | — |
| 23 | Secondary O2 sensor | — | W51 | — | 0.5 | T12-C2-5 | — | — | — |
| 24 | Starter switch signal | — | W61 | — | 0.5 | T12-C2-4 | — | — | — |
| 25 | Immobilizer code | — | — | — | — | — | — | — | — |
| 26 | Power steering load detect | — | W62 | — | 0.5 | T12-C2-8 | — | — | — |
| 27 | A/C switch (request) | — | W63 | — | 0.5 | T12-C2-11 | — | — | — |
| 28 | Air pump relay | — | W36 | — | 0.5 | T12-C3-23 | — | — | — |
| 29 | Fuel tank pressure sensor | — | W56 | — | 0.5 | T12-C2-19 | — | — | — |
| 30 | Electrical load detector | — | W57 | — | 0.5 | T12-C3-17 | — | — | — |
| 31 | NC | — | — | — | — | — | — | — | — |
| 32 | Brake switch | — | W64 | — | 0.5 | T12-C2-14 | — | — | — |
OEM-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Power source 1 (main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | Power ground 1 | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 3 | Injector 2 | — | W29 | — | 0.5 | T12-C1-17 | — | — | — |
| 4 | Injector 3 | — | W30 | — | 0.5 | T12-C1-34 | — | — | — |
| 5 | Injector 4 | — | W31 | — | 0.5 | T12-C1-25 | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Power source 2 (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 10 | Power ground 2 | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | Injector 1 | — | W28 | — | 0.5 | T12-C1-9 | — | — | — |
| 12 | VTEC solenoid | — | W37 | — | 0.5 | T12-C1-6 | — | — | — |
| 13 | NC | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | NC | — | — | — | — | — | — | — | — |
| 16 | NC | — | — | — | — | — | — | — | — |
| 17 | NC | — | — | — | — | — | — | — | — |
| 18 | NC | — | — | — | — | — | — | — | — |
| 19 | NC | — | — | — | — | — | — | — | — |
| 20 | Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | Backup power (battery constant) | — | W4 | — | 0.85 | T12-C3-26 | — | — | — |
| 22 | Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 23 | Idle air control valve | — | W40 | — | 0.5 | T12-C3-24 | — | — | — |
| 24 | NC | — | — | — | — | — | — | — | — |
| 25 | NC | — | — | — | — | — | — | — | — |
OEM-C
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Primary O2 heater | — | W38 | — | 0.5 | T12-C3-9 | — | — | — |
| 2 | Alternator control | — | W48 | — | 0.5 | T12-C1-15 | — | — | — |
| 3 | Knock sensor | — | — | — | — | — | — | — | — |
| 4 | Ignition coil 1 | — | W24 | — | 0.5 | T12-C1-10 | — | — | — |
| 5 | Alternator FR signal | — | W60 | — | 0.5 | T12-C2-20 | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | Sensor ground 1 | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Crank sensor + (CKP+) | — | W19 | — | 0.5 | T12-C2-12 | — | — | — |
| 9 | Crank sensor − (CKP−) | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 10 | VTEC pressure switch | — | W65 | — | 0.5 | T12-C2-15 | — | — | — |
| 11 | Secondary O2 heater control | — | W39 | — | 0.5 | T12-C3-3 | — | — | — |
| 12 | Ignition coil 2 | — | W25 | — | 0.5 | T12-C1-18 | — | — | — |
| 13 | Ignition coil 3 | — | W26 | — | 0.5 | T12-C1-1 | — | — | — |
| 14 | Ignition coil 4 | — | W27 | — | 0.5 | T12-C1-26 | — | — | — |
| 15 | Secondary O2 sensor | — | W52 | — | 0.5 | T12-C2-6 | — | — | — |
| 16 | Primary O2 sensor | — | W53 | — | 0.5 | T12-C2-18 | — | — | — |
| 17 | MAP sensor | — | W49 | — | 0.5 | T12-C2-10 | — | — | — |
| 18 | Sensor ground 2 | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor 5V supply 1 (MAP) | — | W17 | — | 0.5 | T12-C2-24 | — | — | — |
| 20 | Cam (TDC1) sensor + | — | W21 | — | 0.5 | T12-C2-22 | — | — | — |
| 21 | Cam (TDC1) sensor − | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Knock sensor | — | — | — | — | — | — | — | — |
| 23 | NC | — | — | — | — | — | — | — | — |
| 24 | Air pump electric current sensor | — | W58 | — | 0.5 | T12-C3-18 | — | — | — |
| 25 | Intake air temp sensor | — | W55 | — | 0.5 | T12-C2-25 | — | — | — |
| 26 | Coolant temp sensor | — | W54 | — | 0.5 | T12-C2-7 | — | — | — |
| 27 | Throttle position sensor | — | W50 | — | 0.5 | T12-C2-1 | — | — | — |
| 28 | Sensor 5V supply 2 | — | W18 | — | 0.5 | T12-C2-9 | — | — | — |
| 29 | Cam (TDC2) sensor + | — | W23 | — | 0.5 | T12-C2-29 | — | — | — |
| 30 | Cam (TDC2) sensor − | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 31 | Timing ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
OEM-D
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | NC | — | — | — | — | — | — | — | — |
| 2 | NC | — | — | — | — | — | — | — | — |
| 3 | NC | — | — | — | — | — | — | — | — |
| 4 | NC | — | — | — | — | — | — | — | — |
| 5 | NC | — | — | — | — | — | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | NC | — | — | — | — | — | — | — | — |
| 10 | NC | — | — | — | — | — | — | — | — |
| 11 | NC | — | — | — | — | — | — | — | — |
| 12 | NC | — | — | — | — | — | — | — | — |
| 13 | NC | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | NC | — | — | — | — | — | — | — | — |
| 16 | NC | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W22 | — | 0.5 | OEM-C-21 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-C-18 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-C-30 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-C-31 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-C-7 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | T12-C2-21 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | T12-C2-33 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | OEM-C-9 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-B-1 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | T12-C1-31 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-B-9 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W7 | — | 0.85 | OEM-B-20 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | T12-C1-13 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | T12-C1-14 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-B-22 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-B-10 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-B-2 | — | — | — |
T12-C1
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Coil 3 | — | W26 | — | 0.5 | OEM-C-13 | — | — | — |
| 2 | Coil 11 | — | — | — | — | — | — | — | — |
| 3 | PWM 3 | — | W34 | — | 0.5 | OEM-A-17 | — | — | — |
| 4 | PWM 2 | — | W33 | — | 0.5 | OEM-A-16 | — | — | — |
| 5 | PWM 1 | — | W32 | — | 0.5 | OEM-A-15 | — | — | — |
| 6 | Motor 1 + | — | W37 | — | 0.5 | OEM-B-12 | — | — | — |
| 7 | Motor 1 - | — | — | — | — | — | — | — | — |
| 8 | Injector 11 | — | — | — | — | — | — | — | — |
| 9 | Injector 1 | — | W28 | — | 0.5 | OEM-B-11 | — | — | — |
| 10 | Coil 1 | — | W24 | — | 0.5 | OEM-C-4 | — | — | — |
| 11 | Coil 5 | — | — | — | — | — | — | — | — |
| 12 | Coil 7 | — | — | — | — | — | — | — | — |
| 13 | Power Ground 1 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | Power Ground 2 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 15 | Injector 6 | — | W48 | — | 0.5 | OEM-C-2 | — | — | — |
| 16 | Injector 5 | — | W47 | — | 0.5 | OEM-A-6 | — | — | — |
| 17 | Injector 2 | — | W29 | — | 0.5 | OEM-B-3 | — | — | — |
| 18 | Coil 2 | — | W25 | — | 0.5 | OEM-C-12 | — | — | — |
| 19 | Coil 8 | — | — | — | — | — | — | — | — |
| 20 | Coil 9 | — | — | — | — | — | — | — | — |
| 21 | Injector 9 | — | — | — | — | — | — | — | — |
| 22 | Injector 10 | — | — | — | — | — | — | — | — |
| 23 | Injector 8 | — | — | — | — | — | — | — | — |
| 24 | Injector 7 | — | — | — | — | — | — | — | — |
| 25 | Injector 4 | — | W31 | — | 0.5 | OEM-B-5 | — | — | — |
| 26 | Coil 4 | — | W27 | — | 0.5 | OEM-C-14 | — | — | — |
| 27 | Coil 6 | — | — | — | — | — | — | — | — |
| 28 | Coil 10 | — | — | — | — | — | — | — | — |
| 29 | Motor 2 + | — | — | — | — | — | — | — | — |
| 30 | Motor 2 - | — | — | — | — | — | — | — | — |
| 31 | Ignition 12v In | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 32 | Injector 12 | — | — | — | — | — | — | — | — |
| 33 | Coil 12 | — | — | — | — | — | — | — | — |
| 34 | Injector 3 | — | W30 | — | 0.5 | OEM-B-4 | — | — | — |
T12-C2
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Analogue 2 | — | W50 | — | 0.5 | OEM-C-27 | — | — | — |
| 2 | Wheel 1 | — | W59 | — | 0.5 | OEM-A-9 | — | — | — |
| 3 | Analogue 10 | — | — | — | — | — | — | — | — |
| 4 | Digital 1 | — | W61 | — | 0.5 | OEM-A-24 | — | — | — |
| 5 | Analogue 3 | — | W51 | — | 0.5 | OEM-A-23 | — | — | — |
| 6 | Analogue 4 | — | W52 | — | 0.5 | OEM-C-15 | — | — | — |
| 7 | Thermistor 1 | — | W54 | — | 0.5 | OEM-C-26 | — | — | — |
| 8 | Digital 2 | — | W62 | — | 0.5 | OEM-A-26 | — | — | — |
| 9 | 5v Output | — | W18 | — | 0.5 | OEM-C-28 | — | — | — |
| 10 | Analogue 1 | — | W49 | — | 0.5 | OEM-C-17 | — | — | — |
| 11 | Digital 3 | — | W63 | — | 0.5 | OEM-A-27 | — | — | — |
| 12 | Crank | — | W19 | — | 0.5 | OEM-C-8 | — | — | — |
| 13 | Analogue 12 | — | — | — | — | — | — | — | — |
| 14 | Digital 4 | — | W64 | — | 0.5 | OEM-A-32 | — | — | — |
| 15 | Digital 5 | — | W65 | — | 0.5 | OEM-C-10 | — | — | — |
| 16 | Analogue 11 | — | — | — | — | — | — | — | — |
| 17 | Thermistor 3 | — | — | — | — | — | — | — | — |
| 18 | Analogue 5 | — | W53 | — | 0.5 | OEM-C-16 | — | — | — |
| 19 | Analogue 6 | — | W56 | — | 0.5 | OEM-A-29 | — | — | — |
| 20 | Wheel 2 | — | W60 | — | 0.5 | OEM-C-5 | — | — | — |
| 21 | Sensor Ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Cam 1 | — | W21 | — | 0.5 | OEM-C-20 | — | — | — |
| 23 | Cam 3 | — | — | — | — | — | — | — | — |
| 24 | 5v Output | — | W17 | — | 0.5 | OEM-C-19 | — | — | — |
| 25 | Thermistor 2 | — | W55 | — | 0.5 | OEM-C-25 | — | — | — |
| 26 | CAN High | — | — | — | — | — | — | — | — |
| 27 | Digital 6 | — | — | — | — | — | — | — | — |
| 28 | CAN Low | — | — | — | — | — | — | — | — |
| 29 | Cam 2 | — | W23 | — | 0.5 | OEM-C-29 | — | — | — |
| 30 | Cam 4 | — | — | — | — | — | — | — | — |
| 31 | Wheel 3 | — | — | — | — | — | — | — | — |
| 32 | Wheel 4 | — | — | — | — | — | — | — | — |
| 33 | Sensor Ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 34 | Analogue 9 | — | — | — | — | — | — | — | — |
T12-C3
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Lambda 2 Pump Current | — | — | — | — | — | — | — | — |
| 2 | Lambda 2 VGND | — | — | — | — | — | — | — | — |
| 3 | Lambda 2 Heater Negative | — | W39 | — | 0.5 | OEM-C-11 | — | — | — |
| 4 | PWM 9 | — | W43 | — | 0.5 | OEM-A-18 | — | — | — |
| 5 | Lambda 2 Trim Resistor | — | — | — | — | — | — | — | — |
| 6 | Lambda 2 Nernst Voltage | — | — | — | — | — | — | — | — |
| 7 | Lambda 1 Pump Current | — | — | — | — | — | — | — | — |
| 8 | Lambda 1 VGND | — | — | — | — | — | — | — | — |
| 9 | Lambda 1 Heater Negative | — | W38 | — | 0.5 | OEM-C-1 | — | — | — |
| 10 | PWM 8 | — | W42 | — | 0.5 | OEM-A-12 | — | — | — |
| 11 | Lambda 1 Trim Resistor | — | — | — | — | — | — | — | — |
| 12 | Lambda 1 Nernst Voltage | — | — | — | — | — | — | — | — |
| 13 | Analogue 13 | — | — | — | — | — | — | — | — |
| 14 | Analogue 14 | — | — | — | — | — | — | — | — |
| 15 | Analogue 15 | — | — | — | — | — | — | — | — |
| 16 | Analogue 16 | — | — | — | — | — | — | — | — |
| 17 | Analogue 7 | — | W57 | — | 0.5 | OEM-A-30 | — | — | — |
| 18 | Analogue 8 | — | W58 | — | 0.5 | OEM-C-24 | — | — | — |
| 19 | Digital 7 | — | — | — | — | — | — | — | — |
| 20 | Digital 8 | — | — | — | — | — | — | — | — |
| 21 | Digital 9 | — | — | — | — | — | — | — | — |
| 22 | PWM 4 | — | W35 | — | 0.5 | OEM-A-20 | — | — | — |
| 23 | PWM 5 | — | W36 | — | 0.5 | OEM-A-28 | — | — | — |
| 24 | PWM 6 | — | W40 | — | 0.5 | OEM-B-23 | — | — | — |
| 25 | PWM 7 | — | W41 | — | 0.5 | OEM-A-1 | — | — | — |
| 26 | Permanent 12v | — | W4 | — | 0.85 | OEM-B-21 | — | — | — |
| 27 | Permanent 12v | — | — | — | — | — | — | — | — |
| 28 | PWM 10 | — | W44 | — | 0.5 | OEM-A-2 | — | — | — |
| 29 | PWM 11 | — | W45 | — | 0.5 | OEM-A-3 | — | — | — |
| 30 | PWM 12 | — | W46 | — | 0.5 | OEM-A-4 | — | — | — |
| 31 | Knock 1 | — | — | — | — | — | — | — | — |
| 32 | Knock 2 | — | — | — | — | — | — | — | — |
| 33 | CAN 2 High | — | — | — | — | — | — | — | — |
| 34 | CAN 2 Low | — | — | — | — | — | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Coolant temp gauge drive | low_side_out | T12-C3-25 | PWM 7 | low_side_out | corroborated | |
| OEM-A-10 | Service check signal | — | — | — | — | single_source | |
| OEM-A-11 | NC | — | — | — | — | unverified | |
| OEM-A-12 | Immobilizer indicator light | low_side_out | T12-C3-10 | PWM 8 | low_side_out | single_source | |
| OEM-A-13 | Immobilizer enable signal | — | — | — | — | single_source | |
| OEM-A-14 | NC | — | — | — | — | unverified | |
| OEM-A-15 | Fuel pump relay (USDM) | low_side_out | T12-C1-5 | PWM 1 | low_side_out | corroborated | |
| OEM-A-16 | Fuel pump relay (JDM) | low_side_out | T12-C1-4 | PWM 2 | low_side_out | single_source | |
| OEM-A-17 | A/C clutch relay | low_side_out | T12-C1-3 | PWM 3 | low_side_out | corroborated | |
| OEM-A-18 | Check engine light (MIL) | low_side_out | T12-C3-4 | PWM 9 | low_side_out | corroborated | |
| OEM-A-19 | Tacho output | tacho_out | — | — | — | corroborated | |
| OEM-A-2 | Air control valve solenoid | low_side_out | T12-C3-28 | PWM 10 | low_side_out | single_source | |
| OEM-A-20 | Radiator fan relay | low_side_out | T12-C3-22 | PWM 4 | low_side_out | corroborated | |
| OEM-A-21 | K-Line | serial | — | — | — | single_source | |
| OEM-A-22 | NC | — | — | — | — | unverified | |
| OEM-A-23 | Secondary O2 sensor | lambda_nb_in | T12-C2-5 | Analogue 3 | analog_in | single_source | |
| OEM-A-24 | Starter switch signal | digital_in | T12-C2-4 | Digital 1 | digital_in | corroborated | |
| OEM-A-25 | Immobilizer code | — | — | — | — | single_source | |
| OEM-A-26 | Power steering load detect | digital_in | T12-C2-8 | Digital 2 | digital_in | corroborated | |
| OEM-A-27 | A/C switch (request) | digital_in | T12-C2-11 | Digital 3 | digital_in | corroborated | |
| OEM-A-28 | Air pump relay | low_side_out | T12-C3-23 | PWM 5 | low_side_out | corroborated | |
| OEM-A-29 | Fuel tank pressure sensor | analog_in | T12-C2-19 | Analogue 6 | analog_in | corroborated | |
| OEM-A-3 | Evap bypass solenoid | low_side_out | T12-C3-29 | PWM 11 | low_side_out | single_source | |
| OEM-A-30 | Electrical load detector | analog_in | T12-C3-17 | Analogue 7 | analog_in | corroborated | |
| OEM-A-31 | NC | — | — | — | — | unverified | |
| OEM-A-32 | Brake switch | digital_in | T12-C2-14 | Digital 4 | digital_in | corroborated | |
| OEM-A-4 | Evap canister vent shut valve | low_side_out | T12-C3-30 | PWM 12 | low_side_out | single_source | |
| OEM-A-5 | NC | — | — | — | — | unverified | |
| OEM-A-6 | Evap canister purge valve | low_side_out | T12-C1-16 | Injector 5 | injector_out | single_source | |
| OEM-A-7 | NC | — | — | — | — | unverified | |
| OEM-A-8 | NC | — | — | — | — | unverified | |
| OEM-A-9 | Vehicle speed sensor | digital_in | T12-C2-2 | Wheel 1 | digital_in | corroborated | |
| OEM-B-1 | Power source 1 (main relay) | power_in | T12-C1-31 | Ignition 12v In | power_in | corroborated | |
| OEM-B-10 | Power ground 2 | ground | T12-C1-13 + T12-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-B-11 | Injector 1 | injector_out | T12-C1-9 | Injector 1 | injector_out | corroborated | |
| OEM-B-12 | VTEC solenoid | high_side_out | T12-C1-6 | Motor 1 + | hbridge_out | corroborated | |
| OEM-B-13 | NC | — | — | — | — | unverified | |
| OEM-B-14 | NC | — | — | — | — | unverified | |
| OEM-B-15 | NC | — | — | — | — | unverified | |
| OEM-B-16 | NC | — | — | — | — | unverified | |
| OEM-B-17 | NC | — | — | — | — | unverified | |
| OEM-B-18 | NC | — | — | — | — | unverified | |
| OEM-B-19 | NC | — | — | — | — | unverified | |
| OEM-B-2 | Power ground 1 | ground | T12-C1-13 + T12-C1-14 | Power Ground 1 + Power Ground 2 | ground | corroborated | |
| OEM-B-20 | Ground | ground | T12-C1-13 + T12-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-B-21 | Backup power (battery constant) | power_in | T12-C3-26 | Permanent 12v | power_in | single_source | |
| OEM-B-22 | Ground | ground | T12-C1-13 + T12-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-B-23 | Idle air control valve | low_side_out | T12-C3-24 | PWM 6 | low_side_out | corroborated | |
| OEM-B-24 | NC | — | — | — | — | unverified | |
| OEM-B-25 | NC | — | — | — | — | unverified | |
| OEM-B-3 | Injector 2 | injector_out | T12-C1-17 | Injector 2 | injector_out | corroborated | |
| OEM-B-4 | Injector 3 | injector_out | T12-C1-34 | Injector 3 | injector_out | corroborated | |
| OEM-B-5 | Injector 4 | injector_out | T12-C1-25 | Injector 4 | injector_out | corroborated | |
| OEM-B-6 | NC | — | — | — | — | unverified | |
| OEM-B-7 | NC | — | — | — | — | unverified | |
| OEM-B-8 | NC | — | — | — | — | unverified | |
| OEM-B-9 | Power source 2 (main relay) | power_in | T12-C1-31 | Ignition 12v In | power_in | corroborated | |
| OEM-C-1 | Primary O2 heater | low_side_out | T12-C3-9 | Lambda 1 Heater Negative | low_side_out | corroborated | |
| OEM-C-10 | VTEC pressure switch | digital_in | T12-C2-15 | Digital 5 | digital_in | corroborated | |
| OEM-C-11 | Secondary O2 heater control | low_side_out | T12-C3-3 | Lambda 2 Heater Negative | low_side_out | single_source | |
| OEM-C-12 | Ignition coil 2 | ignition_out | T12-C1-18 | Coil 2 | ignition_out | corroborated | |
| OEM-C-13 | Ignition coil 3 | ignition_out | T12-C1-1 | Coil 3 | ignition_out | corroborated | |
| OEM-C-14 | Ignition coil 4 | ignition_out | T12-C1-26 | Coil 4 | ignition_out | corroborated | |
| OEM-C-15 | Secondary O2 sensor | lambda_nb_in | T12-C2-6 | Analogue 4 | analog_in | corroborated | |
| OEM-C-16 | Primary O2 sensor | lambda_nb_in | T12-C2-18 | Analogue 5 | analog_in | corroborated | |
| OEM-C-17 | MAP sensor | analog_in | T12-C2-10 | Analogue 1 | analog_in | corroborated | |
| OEM-C-18 | Sensor ground 2 | sensor_ground | T12-C2-21 + T12-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-C-19 | Sensor 5V supply 1 (MAP) | vref | T12-C2-24 | 5v Output | vref | corroborated | |
| OEM-C-2 | Alternator control | low_side_out | T12-C1-15 | Injector 6 | injector_out | single_source | |
| OEM-C-20 | Cam (TDC1) sensor + | trigger_in | T12-C2-22 | Cam 1 | trigger_in | corroborated | |
| OEM-C-21 | Cam (TDC1) sensor − | trigger_in | T12-C2-21 + T12-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-C-22 | Knock sensor | knock_in | — | — | — | conflict | |
| OEM-C-23 | NC | — | — | — | — | unverified | |
| OEM-C-24 | Air pump electric current sensor | analog_in | T12-C3-18 | Analogue 8 | analog_in | single_source | |
| OEM-C-25 | Intake air temp sensor | temp_in | T12-C2-25 | Thermistor 2 | temp_in | corroborated | |
| OEM-C-26 | Coolant temp sensor | temp_in | T12-C2-7 | Thermistor 1 | temp_in | corroborated | |
| OEM-C-27 | Throttle position sensor | analog_in | T12-C2-1 | Analogue 2 | analog_in | corroborated | |
| OEM-C-28 | Sensor 5V supply 2 | vref | T12-C2-9 | 5v Output | vref | corroborated | |
| OEM-C-29 | Cam (TDC2) sensor + | trigger_in | T12-C2-29 | Cam 2 | trigger_in | corroborated | |
| OEM-C-3 | Knock sensor | knock_in | — | — | — | conflict | |
| OEM-C-30 | Cam (TDC2) sensor − | sensor_ground | T12-C2-21 + T12-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-C-31 | Timing ground | sensor_ground | T12-C2-21 + T12-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-C-4 | Ignition coil 1 | ignition_out | T12-C1-10 | Coil 1 | ignition_out | corroborated | |
| OEM-C-5 | Alternator FR signal | digital_in | T12-C2-20 | Wheel 2 | digital_in | single_source | |
| OEM-C-6 | NC | — | — | — | — | unverified | |
| OEM-C-7 | Sensor ground 1 | sensor_ground | T12-C2-21 + T12-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-C-8 | Crank sensor + (CKP+) | trigger_in | T12-C2-12 | Crank | trigger_in | corroborated | |
| OEM-C-9 | Crank sensor − (CKP−) | trigger_in | T12-C2-21 + T12-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-D-1 | NC | — | — | — | — | unverified | |
| OEM-D-10 | NC | — | — | — | — | unverified | |
| OEM-D-11 | NC | — | — | — | — | unverified | |
| OEM-D-12 | NC | — | — | — | — | unverified | |
| OEM-D-13 | NC | — | — | — | — | unverified | |
| OEM-D-14 | NC | — | — | — | — | unverified | |
| OEM-D-15 | NC | — | — | — | — | unverified | |
| OEM-D-16 | NC | — | — | — | — | unverified | |
| OEM-D-2 | NC | — | — | — | — | unverified | |
| OEM-D-3 | NC | — | — | — | — | unverified | |
| OEM-D-4 | NC | — | — | — | — | unverified | |
| OEM-D-5 | NC | — | — | — | — | unverified | |
| OEM-D-6 | NC | — | — | — | — | unverified | |
| OEM-D-7 | NC | — | — | — | — | unverified | |
| OEM-D-8 | NC | — | — | — | — | unverified | |
| OEM-D-9 | NC | — | — | — | — | unverified |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-B-1 | SP-14V-1 | 0.85 | no route | Power source 1 (main relay) | — | |
| W2 | OEM-B-9 | SP-14V-1 | 0.85 | no route | Power source 2 (main relay) | — | |
| W3 | SP-14V-1 | T12-C1-31 | 0.85 | no route | Ignition 12v In | — | |
| W4 | OEM-B-21 | T12-C3-26 | 0.85 | no route | Backup power (battery constant) | — | |
| W5 | OEM-B-10 | SP-GND-1 | 0.85 | no route | Power ground 2 | — | |
| W6 | OEM-B-2 | SP-GND-1 | 0.85 | no route | Power ground 1 | — | |
| W7 | OEM-B-20 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W8 | OEM-B-22 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W9 | SP-GND-1 | T12-C1-13 | 0.85 | no route | Power Ground 1 | — | |
| W10 | SP-GND-1 | T12-C1-14 | 0.85 | no route | Power Ground 2 | — | |
| W11 | OEM-C-18 | SP-0V-1 | 0.5 | no route | Sensor ground 2 | — | |
| W12 | OEM-C-30 | SP-0V-1 | 0.5 | no route | Cam (TDC2) sensor − | — | |
| W13 | OEM-C-31 | SP-0V-1 | 0.5 | no route | Timing ground | — | |
| W14 | OEM-C-7 | SP-0V-1 | 0.5 | no route | Sensor ground 1 | — | |
| W15 | SP-0V-1 | T12-C2-21 | 0.5 | no route | Sensor Ground | — | |
| W16 | SP-0V-1 | T12-C2-33 | 0.5 | no route | Sensor Ground | — | |
| W17 | OEM-C-19 | T12-C2-24 | 0.5 | no route | Sensor 5V supply 1 (MAP) | — | |
| W18 | OEM-C-28 | T12-C2-9 | 0.5 | no route | Sensor 5V supply 2 | — | |
| W19 | OEM-C-8 | T12-C2-12 | 0.5 | no route | Crank sensor + (CKP+) | — | |
| W20 | OEM-C-9 | SP-0V-1 | 0.5 | no route | Crank sensor − (CKP−) | — | |
| W21 | OEM-C-20 | T12-C2-22 | 0.5 | no route | Cam (TDC1) sensor + | — | |
| W22 | OEM-C-21 | SP-0V-1 | 0.5 | no route | Cam (TDC1) sensor − | — | |
| W23 | OEM-C-29 | T12-C2-29 | 0.5 | no route | Cam (TDC2) sensor + | — | |
| W24 | OEM-C-4 | T12-C1-10 | 0.5 | no route | Ignition coil 1 | — | |
| W25 | OEM-C-12 | T12-C1-18 | 0.5 | no route | Ignition coil 2 | — | |
| W26 | OEM-C-13 | T12-C1-1 | 0.5 | no route | Ignition coil 3 | — | |
| W27 | OEM-C-14 | T12-C1-26 | 0.5 | no route | Ignition coil 4 | — | |
| W28 | OEM-B-11 | T12-C1-9 | 0.5 | no route | Injector 1 | — | |
| W29 | OEM-B-3 | T12-C1-17 | 0.5 | no route | Injector 2 | — | |
| W30 | OEM-B-4 | T12-C1-34 | 0.5 | no route | Injector 3 | — | |
| W31 | OEM-B-5 | T12-C1-25 | 0.5 | no route | Injector 4 | — | |
| W32 | OEM-A-15 | T12-C1-5 | 0.5 | no route | Fuel pump relay (USDM) | — | |
| W33 | OEM-A-16 | T12-C1-4 | 0.5 | no route | Fuel pump relay (JDM) | — | |
| W34 | OEM-A-17 | T12-C1-3 | 0.5 | no route | A/C clutch relay | — | |
| W35 | OEM-A-20 | T12-C3-22 | 0.5 | no route | Radiator fan relay | — | |
| W36 | OEM-A-28 | T12-C3-23 | 0.5 | no route | Air pump relay | — | |
| W37 | OEM-B-12 | T12-C1-6 | 0.5 | no route | VTEC solenoid | — | |
| W38 | OEM-C-1 | T12-C3-9 | 0.5 | no route | Primary O2 heater | — | |
| W39 | OEM-C-11 | T12-C3-3 | 0.5 | no route | Secondary O2 heater control | — | |
| W40 | OEM-B-23 | T12-C3-24 | 0.5 | no route | Idle air control valve | — | |
| W41 | OEM-A-1 | T12-C3-25 | 0.5 | no route | Coolant temp gauge drive | — | |
| W42 | OEM-A-12 | T12-C3-10 | 0.5 | no route | Immobilizer indicator light | — | |
| W43 | OEM-A-18 | T12-C3-4 | 0.5 | no route | Check engine light (MIL) | — | |
| W44 | OEM-A-2 | T12-C3-28 | 0.5 | no route | Air control valve solenoid | — | |
| W45 | OEM-A-3 | T12-C3-29 | 0.5 | no route | Evap bypass solenoid | — | |
| W46 | OEM-A-4 | T12-C3-30 | 0.5 | no route | Evap canister vent shut valve | — | |
| W47 | OEM-A-6 | T12-C1-16 | 0.5 | no route | Evap canister purge valve | — | |
| W48 | OEM-C-2 | T12-C1-15 | 0.5 | no route | Alternator control | — | |
| W49 | OEM-C-17 | T12-C2-10 | 0.5 | no route | MAP sensor | — | |
| W50 | OEM-C-27 | T12-C2-1 | 0.5 | no route | Throttle position sensor | — | |
| W51 | OEM-A-23 | T12-C2-5 | 0.5 | no route | Secondary O2 sensor | — | |
| W52 | OEM-C-15 | T12-C2-6 | 0.5 | no route | Secondary O2 sensor | — | |
| W53 | OEM-C-16 | T12-C2-18 | 0.5 | no route | Primary O2 sensor | — | |
| W54 | OEM-C-26 | T12-C2-7 | 0.5 | no route | Coolant temp sensor | — | |
| W55 | OEM-C-25 | T12-C2-25 | 0.5 | no route | Intake air temp sensor | — | |
| W56 | OEM-A-29 | T12-C2-19 | 0.5 | no route | Fuel tank pressure sensor | — | |
| W57 | OEM-A-30 | T12-C3-17 | 0.5 | no route | Electrical load detector | — | |
| W58 | OEM-C-24 | T12-C3-18 | 0.5 | no route | Air pump electric current sensor | — | |
| W59 | OEM-A-9 | T12-C2-2 | 0.5 | no route | Vehicle speed sensor | — | |
| W60 | OEM-C-5 | T12-C2-20 | 0.5 | no route | Alternator FR signal | — | |
| W61 | OEM-A-24 | T12-C2-4 | 0.5 | no route | Starter switch signal | — | |
| W62 | OEM-A-26 | T12-C2-8 | 0.5 | no route | Power steering load detect | — | |
| W63 | OEM-A-27 | T12-C2-11 | 0.5 | no route | A/C switch (request) | — | |
| W64 | OEM-A-32 | T12-C2-14 | 0.5 | no route | Brake switch | — | |
| W65 | OEM-C-10 | T12-C2-15 | 0.5 | no route | VTEC pressure switch | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 179679-6 | TE | S2000 2000–05 ECU harness plug B (25P, TE 040 Multi-Lock) | 1.000 | ea |
| connector | 179680-5 | TE | S2000 2000–05 ECU harness plug C (31P, TE 040 Multi-Lock) | 1.000 | ea |
| connector | 179681-6 | TE | S2000 2000–05 ECU harness plug A (32P, TE 040 Multi-Lock) | 1.000 | ea |
| connector | 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 3.000 | ea |
| connector | S2K-0005-ECU-D | Honda | S2000 2000–05 ECU plug D (P/N unknown) | 1.000 | ea |
| terminal | 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 53.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (11)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | PHYS_REQUIRED_OPEN | T12-C3-27 | T12-C3-27 "Permanent 12v" is required but not wired. |
| warn | LOAD_UNKNOWN | T12-C1-17 | T12-C1-17 "Injector 2" drives OEM-B-3 Injector 2 (load 1.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | T12-C1-25 | T12-C1-25 "Injector 4" drives OEM-B-5 Injector 4 (load 1.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | T12-C1-34 | T12-C1-34 "Injector 3" drives OEM-B-4 Injector 3 (load 1.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | T12-C1-6 | T12-C1-6 "Motor 1 +" drives OEM-B-12 VTEC solenoid (load 1.0 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | T12-C1-9 | T12-C1-9 "Injector 1" drives OEM-B-11 Injector 1 (load 1.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | NET_FAMILY | OEM-B-12 ↔ T12-C1-6 | OEM-B-12 "VTEC solenoid" [high_side_out] is wired to T12-C1-6 "Motor 1 +" [hbridge_out]. A half-bridge can act as a high-side switch only if configured that way. |
| info | NET_FAMILY | OEM-A-6 ↔ T12-C1-16 | OEM-A-6 "Evap canister purge valve" [low_side_out] is wired to T12-C1-16 "Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-C-2 ↔ T12-C1-15 | OEM-C-2 "Alternator control" [low_side_out] is wired to T12-C1-15 "Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-C-9 ↔ OEM-C-30 | OEM-C-9 "Crank sensor − (CKP−)" [trigger_in] is wired to OEM-C-30 "Cam (TDC2) sensor −" [sensor_ground]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 7 optional OEM pins are not mapped: OEM-A-10 Service check signal; OEM-A-13 Immobilizer enable signal; OEM-A-19 Tacho output; OEM-A-21 K-Line; OEM-A-25 Immobilizer code; OEM-C-22 Knock sensor; OEM-C-3 Knock sensor |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-09. Review every wire against both manuals before building. Open items: - T12-C3 27: Permanent 12v: required by DTAFast T12 but no stock pin feeds it; wire by hand Not wired: - OEM-C 22: Knock sensor: 2 stock pins named "Knock sensor" without a documented polarity / pairing; wire by hand - OEM-C 3: Knock sensor: 2 stock pins named "Knock sensor" without a documented polarity / pairing; wire by hand - OEM-A 19: Tacho output: no free tacho/frequency_out/low_side/ls_hs on DTAFast T12 - OEM-A 21: K-Line: no free k_line on DTAFast T12 - OEM-A 10: Service check signal: not classified in the library; wire by hand - OEM-A 13: Immobilizer enable signal: not classified in the library; wire by hand - OEM-A 25: Immobilizer code: not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | AEM 30-6052 Series 2 Plug & Play EMS, 2000–2005 S2000 (original ECU pinout) | https://documents.aemelectronics.com/techlibrary_30-6052_series_2_plug___play_ems.pdf | — | 2026-10-05 | 9f79620fff5a |
| 4 | vendor_doc | DTAFast T12+ ECU wiring diagram (served for T12 and T12+) | https://cdn.shopify.com/s/files/1/0848/7508/4108/files/T12PLUS_Wiring-Diagram.pdf?v=1728572014 | — | — | — |
| 4 | vendor_doc | Haltech KB: F20C (AP1) engine | https://support.haltech.com/portal/en/kb/articles/f20c-ap1-engine | — | 2026-10-05 | e804da29d014 |
| 4 | vendor_doc | Link S2000 AP1 PlugIn installation manual | https://linkecu.com/documentation/S2000X.pdf | — | 2026-10-05 | d12b0ff3f006 |
| 2 | forum | AllPinouts: 2000–2005 Honda S2000 ECU | https://allpinouts.org/pinouts/connectors/car/2000-2005-honda-s2000-ecu/ | archive | 2026-10-05 | 81d874e0385d |
| 2 | forum | Autodata blog: ECU Pinout Honda S2000 2000-2004 | http://autodatas.blogspot.com/2012/11/ecu-pinout-honda-s2000-2000-2004.html | — | 2026-10-05 | 33b93af7640e |
| 2 | derived | Typical load estimates (relay coil ~0.2 A, high-Z injector ~1.2 A, VVT solenoid ~1 A) | — | — | — | — |