Honda NSX NA1 1991-2005 (C30A) → Emtron KV12 (auto)
Honda NSX NA1 1991-2005 (C30A) — Emtron — KV12
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-07
Before you start
| Status | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 75 wires · 13 connectors · 5 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-A-25 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-C-1 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | KV12-D-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | KV12-D-2 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-14V-1 | KV12-D-20 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-23 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-24 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-B-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | KV12-A-19 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | KV12-B-34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | KV12-B-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | KV12-C-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | KV12-C-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-A-26 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-B-10 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-B-12 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-B-14 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-B-16 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-D-21 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-D-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | KV12-C-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-0V-1 | KV12-C-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-D-18 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-D-19 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-D-20 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | SP-5V1-1 | KV12-D-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-B-15 | KV12-D-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | SP-0V-1 | KV12-D-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-11 | KV12-D-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | SP-0V-1 | KV12-D-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-D-4 | KV12-D-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-D-3 | KV12-D-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-21 | KV12-B-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-22 | KV12-B-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B-8 | KV12-B-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-B-6 | KV12-B-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-B-4 | KV12-B-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-B-3 | KV12-B-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-1 | KV12-B-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-3 | KV12-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-5 | KV12-B-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-2 | KV12-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-4 | KV12-B-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-6 | KV12-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-8 | KV12-D-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A-15 | KV12-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A-18 | KV12-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-A-7 | KV12-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-5-F5 | KV12-B-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-5-F7 | KV12-B-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-A-10 | KV12-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-A-12 | KV12-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-A-11 | KV12-B-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-A-13 | KV12-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-A-14 | KV12-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-A-20 | KV12-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-A-9 | KV12-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-D-17 | KV12-C-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-D-11 | KV12-C-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-D-14 | KV12-C-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-D-16 | KV12-C-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-D-13 | KV12-C-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-D-15 | KV12-C-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-D-12 | KV12-C-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-C-2 | KV12-C-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-D-9 | KV12-C-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-5-F2 | KV12-C-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W68 | OEM-5-F4 | KV12-C-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W69 | OEM-B-7 | KV12-C-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W70 | OEM-C-11 | KV12-C-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W71 | OEM-C-3 | KV12-C-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W72 | OEM-C-5 | KV12-C-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W73 | OEM-C-7 | KV12-C-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W74 | OEM-C-9 | KV12-C-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W75 | OEM-D-8 | KV12-C-20 | 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 | KV12-D-1 | KV12-C-17 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | KV12-A-19 | KV12-D-1 | open (OL) | power ground must not touch +12 V supply | |
| 3 | KV12-A-19 | KV12-D-21 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | KV12-C-17 | KV12-D-21 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 5 | KV12-D-1 | KV12-D-21 | open (OL) | +12 V supply must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
KV12-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injection Channel 9 | — | — | — | — | — | — | — | — |
| 2 | Injection Channel 10 | — | — | — | — | — | — | — | — |
| 3 | Injection Channel 11 | — | — | — | — | — | — | — | — |
| 4 | Injection Channel 12 | — | — | — | — | — | — | — | — |
| 5 | — | — | — | — | — | — | — | — | — |
| 6 | — | — | — | — | — | — | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | Ignition Channel 9 | — | — | — | — | — | — | — | — |
| 9 | Ignition Channel 10 | — | — | — | — | — | — | — | — |
| 10 | Lambda 1 Heater - | — | W51 | — | 0.5 | OEM-A-10 | — | — | — |
| 11 | Lambda 2 Heater - | — | W52 | — | 0.5 | OEM-A-12 | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | Ignition Channel 11 | — | — | — | — | — | — | — | — |
| 15 | Ignition Channel 12 | — | — | — | — | — | — | — | — |
| 16 | Lambda 1 Heater + | — | — | — | — | — | — | — | — |
| 17 | Lambda 2 Heater + | — | — | — | — | — | — | — | — |
| 18 | Lambda 1 Nernst Cell (Vs) | — | — | — | — | — | — | — | — |
| 19 | ECU Ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 20 | Lambda 2 Cal Resistor (CalR) | — | — | — | — | — | — | — | — |
| 21 | Lambda 2 Nernst Cell (Vs) | — | — | — | — | — | — | — | — |
| 22 | Lambda 2 Pump Cell (Ip) | — | — | — | — | — | — | — | — |
| 23 | Lambda 2 Virtual Ground (VGnd) | — | — | — | — | — | — | — | — |
| 24 | Lambda 1 Cal Resistor (CalR) | — | — | — | — | — | — | — | — |
| 25 | Lambda 1 Pump Cell (Ip) | — | — | — | — | — | — | — | — |
| 26 | Lambda 1 Virtual Ground (VGnd) | — | — | — | — | — | — | — | — |
KV12-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injection Channel 1 | — | W39 | — | 0.5 | OEM-A-1 | — | — | — |
| 2 | Injection Channel 2 | — | W40 | — | 0.5 | OEM-A-3 | — | — | — |
| 3 | Injection Channel 3 | — | W41 | — | 0.5 | OEM-A-5 | — | — | — |
| 4 | Injection Channel 4 | — | W42 | — | 0.5 | OEM-A-2 | — | — | — |
| 5 | Injection Channel 5 | — | W43 | — | 0.5 | OEM-A-4 | — | — | — |
| 6 | Injection Channel 6 | — | W44 | — | 0.5 | OEM-A-6 | — | — | — |
| 7 | Injection Channel 7 | — | — | — | — | — | — | — | — |
| 8 | Injection Channel 8 | — | — | — | — | — | — | — | — |
| 9 | ECU Ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Auxiliary Output 1 | — | W54 | — | 0.5 | OEM-A-13 | — | — | — |
| 11 | Auxiliary Output 2 | — | W55 | — | 0.5 | OEM-A-14 | — | — | — |
| 12 | Auxiliary Output 3 | — | W56 | — | 0.5 | OEM-A-20 | — | — | — |
| 13 | Auxiliary Output 4 | — | W57 | — | 0.5 | OEM-A-9 | — | — | — |
| 14 | Auxiliary Output 5 | — | W46 | — | 0.5 | OEM-A-15 | — | — | — |
| 15 | Auxiliary Output 6 | — | W47 | — | 0.5 | OEM-A-18 | — | — | — |
| 16 | Auxiliary Output 7 | — | W48 | — | 0.5 | OEM-A-7 | — | — | — |
| 17 | Auxiliary Output 8 | — | W53 | — | 0.5 | OEM-A-11 | — | — | — |
| 18 | Auxiliary Output 9 | — | W49 | — | 0.5 | OEM-5-F5 | — | — | — |
| 19 | Auxiliary Output 10 | — | W50 | — | 0.5 | OEM-5-F7 | — | — | — |
| 20 | Auxiliary Output 11 | — | — | — | — | — | — | — | — |
| 21 | Auxiliary Output 12 | — | — | — | — | — | — | — | — |
| 22 | Auxiliary Output 13 | — | — | — | — | — | — | — | — |
| 23 | Auxiliary Output 14 | — | — | — | — | — | — | — | — |
| 24 | Auxiliary Output 15 | — | — | — | — | — | — | — | — |
| 25 | Auxiliary Output 16 | — | — | — | — | — | — | — | — |
| 26 | Ignition Channel 1 | — | W33 | — | 0.5 | OEM-A-21 | — | — | — |
| 27 | Ignition Channel 2 | — | W34 | — | 0.5 | OEM-A-22 | — | — | — |
| 28 | Ignition Channel 3 | — | W35 | — | 0.5 | OEM-B-8 | — | — | — |
| 29 | Ignition Channel 4 | — | W36 | — | 0.5 | OEM-B-6 | — | — | — |
| 30 | Ignition Channel 5 | — | W37 | — | 0.5 | OEM-B-4 | — | — | — |
| 31 | Ignition Channel 6 | — | W38 | — | 0.5 | OEM-B-3 | — | — | — |
| 32 | Ignition Channel 7 | — | — | — | — | — | — | — | — |
| 33 | Ignition Channel 8 | — | — | — | — | — | — | — | — |
| 34 | ECU Ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
KV12-C
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU Ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Analog Input Channel 1 | — | W58 | — | 0.5 | OEM-D-17 | — | — | — |
| 3 | Analog Input Channel 2 | — | W59 | — | 0.5 | OEM-D-11 | — | — | — |
| 4 | Analog Input Channel 3 | — | W60 | — | 0.5 | OEM-D-14 | — | — | — |
| 5 | Analog Input Channel 4 | — | W61 | — | 0.5 | OEM-D-16 | — | — | — |
| 6 | Analog Input Channel 5 | — | W62 | — | 0.5 | OEM-D-13 | — | — | — |
| 7 | Analog Input Channel 6 | — | W63 | — | 0.5 | OEM-D-15 | — | — | — |
| 8 | Analog Input Channel 7 | — | W64 | — | 0.5 | OEM-D-12 | — | — | — |
| 9 | Analog Input Channel 8 | — | — | — | — | — | — | — | — |
| 10 | Analog Input Channel 9 | — | — | — | — | — | — | — | — |
| 11 | Analog Input Channel 10 | — | — | — | — | — | — | — | — |
| 12 | Analog Input Channel 11 | — | — | — | — | — | — | — | — |
| 13 | Analog Input Channel 12 | — | — | — | — | — | — | — | — |
| 14 | Analog Input Channel 13 | — | — | — | — | — | — | — | — |
| 15 | Analog Input Channel 14 | — | — | — | — | — | — | — | — |
| 16 | Analog Input Channel 15 | — | — | — | — | — | — | — | — |
| 17 | Analog Sensor 0V Reference | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 18 | Digital Input 9 | — | W73 | — | 0.5 | OEM-C-7 | — | — | — |
| 19 | Digital Input 10 | — | W74 | — | 0.5 | OEM-C-9 | — | — | — |
| 20 | Digital Input 11 | — | W75 | — | 0.5 | OEM-D-8 | — | — | — |
| 21 | Digital Input 12 | — | — | — | — | — | — | — | — |
| 22 | Digital Input 13 | — | — | — | — | — | — | — | — |
| 23 | Digital Input 14 | — | — | — | — | — | — | — | — |
| 24 | Analog Input Channel 16 | — | — | — | — | — | — | — | — |
| 25 | Analog Sensor 0V Reference | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 26 | ECU Ground | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| 27 | Digital Input 1 | — | W65 | — | 0.5 | OEM-C-2 | — | — | — |
| 28 | Digital Input 2 | — | W66 | — | 0.5 | OEM-D-9 | — | — | — |
| 29 | Digital Input 3 | — | W67 | — | 0.5 | OEM-5-F2 | — | — | — |
| 30 | Digital Input 4 | — | W68 | — | 0.5 | OEM-5-F4 | — | — | — |
| 31 | Digital Input 5 | — | W69 | — | 0.5 | OEM-B-7 | — | — | — |
| 32 | Digital Input 6 | — | W70 | — | 0.5 | OEM-C-11 | — | — | — |
| 33 | Digital Input 7 | — | W71 | — | 0.5 | OEM-C-3 | — | — | — |
| 34 | Digital Input 8 | — | W72 | — | 0.5 | OEM-C-5 | — | — | — |
KV12-D
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU 14V Supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | Auxiliary Output 13-16 14V Supply | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Sensor Supply 8V | — | — | — | — | — | — | — | — |
| 4 | Crank Index Sensor + | — | W27 | — | 0.5 | OEM-B-15 | — | — | — |
| 5 | Crank Index Sensor - | — | W28 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sync Sensor + | — | W29 | — | 0.5 | OEM-B-11 | — | — | — |
| 7 | Sync Sensor - | — | W30 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | CAN 1H | — | — | — | — | — | — | — | — |
| 9 | EFI Relay Output (Low Side 200mA) | — | W45 | — | 0.5 | OEM-A-8 | — | — | — |
| 10 | CAN 2H | — | — | — | — | — | — | — | — |
| 11 | Knock 1 + | — | W31 | — | 0.5 | OEM-D-4 | — | — | — |
| 12 | Knock 1 - | — | — | — | — | — | — | — | — |
| 13 | Shield (Crank/Cam/ Knock) | — | — | — | — | — | — | — | — |
| 14 | CAN 1L | — | — | — | — | — | — | — | — |
| 15 | Ignition Switch Input | — | — | — | — | — | — | — | — |
| 16 | CAN 2L | — | — | — | — | — | — | — | — |
| 17 | Knock 2 + | — | W32 | — | 0.5 | OEM-D-3 | — | — | — |
| 18 | Knock 2 - | — | — | — | — | — | — | — | — |
| 19 | Analog Output (0.0 - 5.0V) | — | — | — | — | — | — | — | — |
| 20 | Auxiliary Output 9-12 14V Supply | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| 21 | Sensor Supply Vref1: 5.0V | — | W26 | — | 0.5 | SP-5V1-1 | — | — | — |
| 22 | Sensor Supply Vref2: 5.0V | — | — | — | — | — | — | — | — |
| 23 | Ethernet Tx + | — | — | — | — | — | — | — | — |
| 24 | Ethernet Tx - | — | — | — | — | — | — | — | — |
| 25 | Ethernet Rx + | — | — | — | — | — | — | — | — |
| 26 | Ethernet Rx - | — | — | — | — | — | — | — | — |
OEM-5
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| F2 | Front VTEC pressure switch | — | W67 | — | 0.5 | KV12-C-29 | — | — | — |
| F4 | Rear VTEC pressure switch | — | W68 | — | 0.5 | KV12-C-30 | — | — | — |
| F5 | Front VTEC solenoid valve | — | W49 | — | 0.5 | KV12-B-18 | — | — | — |
| F7 | Rear VTEC solenoid valve | — | W50 | — | 0.5 | KV12-B-19 | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 | — | W39 | — | 0.5 | KV12-B-1 | — | — | — |
| 10 | Front O2 sensor heater (HTCNTF) | — | W51 | — | 0.5 | KV12-A-10 | — | — | — |
| 11 | EGR control solenoid | — | W53 | — | 0.5 | KV12-B-17 | — | — | — |
| 12 | Rear O2 sensor heater (HTCNTR) | — | W52 | — | 0.5 | KV12-A-11 | — | — | — |
| 13 | Check engine light (WARN) | — | W54 | — | 0.5 | KV12-B-10 | — | — | — |
| 14 | Chamber volume control solenoid (BPS) | — | W55 | — | 0.5 | KV12-B-11 | — | — | — |
| 15 | A/C clutch relay (ACC) | — | W46 | — | 0.5 | KV12-B-14 | — | — | — |
| 18 | Radiator fan control (FANCNTR) | — | W47 | — | 0.5 | KV12-B-15 | — | — | — |
| 2 | Injector 4 | — | W42 | — | 0.5 | KV12-B-4 | — | — | — |
| 20 | EVAP purge cut-off solenoid (PGS) | — | W56 | — | 0.5 | KV12-B-12 | — | — | — |
| 21 | Ignition coil 1 | — | W33 | — | 0.5 | KV12-B-26 | — | — | — |
| 22 | Ignition coil 2 | — | W34 | — | 0.5 | KV12-B-27 | — | — | — |
| 23 | Power ground (PG1) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 24 | Power ground (PG2) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | ECU power (IGP1) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 26 | Sensor ground (LG1) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Injector 2 | — | W40 | — | 0.5 | KV12-B-2 | — | — | — |
| 4 | Injector 5 | — | W43 | — | 0.5 | KV12-B-5 | — | — | — |
| 5 | Injector 3 | — | W41 | — | 0.5 | KV12-B-3 | — | — | — |
| 6 | Injector 6 | — | W44 | — | 0.5 | KV12-B-6 | — | — | — |
| 7 | Main relay | — | W48 | — | 0.5 | KV12-B-16 | — | — | — |
| 8 | Fuel pump relay 2 (FLR2) | — | W45 | — | 0.5 | KV12-D-9 | — | — | — |
| 9 | Idle air control valve (IACV) | — | W57 | — | 0.5 | KV12-B-13 | — | — | — |
OEM-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | CYL 2M — CYP sensor 2 return | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 11 | CYL 1P — CYP sensor 1 signal | — | W29 | — | 0.5 | KV12-D-6 | — | — | — |
| 12 | CYL 1M — CYP sensor 1 return | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 13 | CRNK 2P — TDC sensor signal | — | — | — | — | — | — | — | — |
| 14 | CRNK 2M — TDC sensor return | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | CRNK 1P — crank sensor signal | — | W27 | — | 0.5 | KV12-D-4 | — | — | — |
| 16 | CRNK 1M — crank sensor return | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Chassis ground (LG2) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 3 | Ignition coil 6 | — | W38 | — | 0.5 | KV12-B-31 | — | — | — |
| 4 | Ignition coil 5 | — | W37 | — | 0.5 | KV12-B-30 | — | — | — |
| 6 | Ignition coil 4 | — | W36 | — | 0.5 | KV12-B-29 | — | — | — |
| 7 | Neutral switch (M/T) / gear position (A/T) | — | W69 | — | 0.5 | KV12-C-31 | — | — | — |
| 8 | Ignition coil 3 | — | W35 | — | 0.5 | KV12-B-28 | — | — | — |
| 9 | CYL 2P — CYP sensor 2 signal | — | — | — | — | — | — | — | — |
OEM-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU power (IGP2) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 10 | Traction control | — | — | — | — | — | — | — | — |
| 11 | Starter switch (STS) | — | W70 | — | 0.5 | KV12-C-32 | — | — | — |
| 12 | Traction control | — | — | — | — | — | — | — | — |
| 2 | Vehicle speed sensor (VSS) | — | W65 | — | 0.5 | KV12-C-27 | — | — | — |
| 3 | A/C switch (ACS) | — | W71 | — | 0.5 | KV12-C-33 | — | — | — |
| 4 | Tachometer output (NEP) | — | — | — | — | — | — | — | — |
| 5 | A/C pressure switch (PDSW) | — | W72 | — | 0.5 | KV12-C-34 | — | — | — |
| 6 | Traction control | — | — | — | — | — | — | — | — |
| 7 | Clutch switch (M/T) | — | W73 | — | 0.5 | KV12-C-18 | — | — | — |
| 8 | Traction control | — | — | — | — | — | — | — | — |
| 9 | Service check connector (SCS) | — | W74 | — | 0.5 | KV12-C-19 | — | — | — |
OEM-D
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Battery backup (VBU) | — | — | — | — | — | — | — | — |
| 11 | Throttle position sensor (TPS) | — | W59 | — | 0.5 | KV12-C-3 | — | — | — |
| 12 | EGR lift sensor (EGRL) | — | W64 | — | 0.5 | KV12-C-8 | — | — | — |
| 13 | Engine coolant temperature (ECT) | — | W62 | — | 0.5 | KV12-C-6 | — | — | — |
| 14 | Primary O2 sensor | — | W60 | — | 0.5 | KV12-C-4 | — | — | — |
| 15 | Intake air temperature (IAT) | — | W63 | — | 0.5 | KV12-C-7 | — | — | — |
| 16 | Secondary O2 sensor | — | W61 | — | 0.5 | KV12-C-5 | — | — | — |
| 17 | MAP sensor | — | W58 | — | 0.5 | KV12-C-2 | — | — | — |
| 18 | +5V sensor supply (VCC) | — | W23 | — | 0.5 | SP-5V1-1 | — | — | — |
| 19 | +5V sensor supply (VCC) | — | W24 | — | 0.5 | SP-5V1-1 | — | — | — |
| 20 | +5V sensor supply (VCC) | — | W25 | — | 0.5 | SP-5V1-1 | — | — | — |
| 21 | Sensor ground (SG) | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Sensor ground (SG) | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Knock sensor — rear | — | W32 | — | 0.5 | KV12-D-17 | — | — | — |
| 4 | Knock sensor — front | — | W31 | — | 0.5 | KV12-D-11 | — | — | — |
| 5 | Traction control | — | — | — | — | — | — | — | — |
| 6 | Fuel pump voltage monitor (VFP) | — | — | — | — | — | — | — | — |
| 8 | Ignition timing adjuster (IGADJ) | — | W75 | — | 0.5 | KV12-C-20 | — | — | — |
| 9 | Alternator FR signal | — | W66 | — | 0.5 | KV12-C-28 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W14 | — | 0.5 | OEM-A-26 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-B-10 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-B-12 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-B-14 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-B-16 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-D-21 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | OEM-D-22 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | KV12-C-17 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | KV12-C-25 | — | — | — |
| 1 | — | — | W28 | — | 0.5 | KV12-D-5 | — | — | — |
| 1 | — | — | W30 | — | 0.5 | KV12-D-7 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-25 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-C-1 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | KV12-D-1 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | KV12-D-2 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | KV12-D-20 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W23 | — | 0.5 | OEM-D-18 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | OEM-D-19 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | OEM-D-20 | — | — | — |
| 1 | — | — | W26 | — | 0.5 | KV12-D-21 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W6 | — | 0.85 | OEM-A-23 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-24 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-B-2 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | KV12-A-19 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | KV12-B-34 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | KV12-B-9 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | KV12-C-1 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | KV12-C-26 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-5-F2 | Front VTEC pressure switch | digital_in | KV12-C-29 | Digital Input 3 | digital_in | single_source | |
| OEM-5-F4 | Rear VTEC pressure switch | digital_in | KV12-C-30 | Digital Input 4 | digital_in | single_source | |
| OEM-5-F5 | Front VTEC solenoid valve | high_side_out | KV12-B-18 | Auxiliary Output 9 | hbridge_out | single_source | |
| OEM-5-F7 | Rear VTEC solenoid valve | high_side_out | KV12-B-19 | Auxiliary Output 10 | hbridge_out | single_source | |
| OEM-A-1 | Injector 1 | injector_out | KV12-B-1 | Injection Channel 1 | injector_out | single_source | |
| OEM-A-10 | Front O2 sensor heater (HTCNTF) | low_side_out | KV12-A-10 | Lambda 1 Heater - | low_side_out | single_source | |
| OEM-A-11 | EGR control solenoid | low_side_out | KV12-B-17 | Auxiliary Output 8 | low_side_out | single_source | |
| OEM-A-12 | Rear O2 sensor heater (HTCNTR) | low_side_out | KV12-A-11 | Lambda 2 Heater - | low_side_out | single_source | |
| OEM-A-13 | Check engine light (WARN) | low_side_out | KV12-B-10 | Auxiliary Output 1 | low_side_out | single_source | |
| OEM-A-14 | Chamber volume control solenoid (BPS) | low_side_out | KV12-B-11 | Auxiliary Output 2 | low_side_out | single_source | |
| OEM-A-15 | A/C clutch relay (ACC) | low_side_out | KV12-B-14 | Auxiliary Output 5 | low_side_out | single_source | |
| OEM-A-18 | Radiator fan control (FANCNTR) | low_side_out | KV12-B-15 | Auxiliary Output 6 | low_side_out | single_source | |
| OEM-A-2 | Injector 4 | injector_out | KV12-B-4 | Injection Channel 4 | injector_out | single_source | |
| OEM-A-20 | EVAP purge cut-off solenoid (PGS) | low_side_out | KV12-B-12 | Auxiliary Output 3 | low_side_out | single_source | |
| OEM-A-21 | Ignition coil 1 | ignition_out | KV12-B-26 | Ignition Channel 1 | ignition_out | single_source | |
| OEM-A-22 | Ignition coil 2 | ignition_out | KV12-B-27 | Ignition Channel 2 | ignition_out | single_source | |
| OEM-A-23 | Power ground (PG1) | ground | KV12-A-19 + KV12-B-34 + KV12-B-9 + KV12-C-1 + KV12-C-26 | ECU Ground + ECU Ground + ECU Ground + ECU Ground + ECU Ground | ground | single_source | |
| OEM-A-24 | Power ground (PG2) | ground | KV12-A-19 + KV12-B-34 + KV12-B-9 + KV12-C-1 + KV12-C-26 | ECU Ground + ECU Ground + ECU Ground + ECU Ground + ECU Ground | ground | single_source | |
| OEM-A-25 | ECU power (IGP1) | power_in | KV12-D-1 + KV12-D-2 + KV12-D-20 | ECU 14V Supply + Auxiliary Output 13-16 14V Supply + Auxiliary Output 9-12 14V Supply | power_in | single_source | |
| OEM-A-26 | Sensor ground (LG1) | sensor_ground | KV12-C-17 + KV12-C-25 + KV12-D-5 + KV12-D-7 | Analog Sensor 0V Reference + Analog Sensor 0V Reference + Crank Index Sensor - + Sync Sensor - | sensor_ground + trigger_in | single_source | |
| OEM-A-3 | Injector 2 | injector_out | KV12-B-2 | Injection Channel 2 | injector_out | single_source | |
| OEM-A-4 | Injector 5 | injector_out | KV12-B-5 | Injection Channel 5 | injector_out | corroborated | |
| OEM-A-5 | Injector 3 | injector_out | KV12-B-3 | Injection Channel 3 | injector_out | single_source | |
| OEM-A-6 | Injector 6 | injector_out | KV12-B-6 | Injection Channel 6 | injector_out | single_source | |
| OEM-A-7 | Main relay | low_side_out | KV12-B-16 | Auxiliary Output 7 | low_side_out | single_source | |
| OEM-A-8 | Fuel pump relay 2 (FLR2) | low_side_out | KV12-D-9 | EFI Relay Output (Low Side 200mA) | low_side_out | single_source | |
| OEM-A-9 | Idle air control valve (IACV) | low_side_out | KV12-B-13 | Auxiliary Output 4 | low_side_out | single_source | |
| OEM-B-10 | CYL 2M — CYP sensor 2 return | sensor_ground | KV12-C-17 + KV12-C-25 + KV12-D-5 + KV12-D-7 | Analog Sensor 0V Reference + Analog Sensor 0V Reference + Crank Index Sensor - + Sync Sensor - | sensor_ground + trigger_in | single_source | |
| OEM-B-11 | CYL 1P — CYP sensor 1 signal | trigger_in | KV12-D-6 | Sync Sensor + | trigger_in | single_source | |
| OEM-B-12 | CYL 1M — CYP sensor 1 return | sensor_ground | KV12-C-17 + KV12-C-25 + KV12-D-5 + KV12-D-7 | Analog Sensor 0V Reference + Analog Sensor 0V Reference + Crank Index Sensor - + Sync Sensor - | sensor_ground + trigger_in | single_source | |
| OEM-B-13 | CRNK 2P — TDC sensor signal | trigger_in | — | — | — | single_source | |
| OEM-B-14 | CRNK 2M — TDC sensor return | sensor_ground | KV12-C-17 + KV12-C-25 + KV12-D-5 + KV12-D-7 | Analog Sensor 0V Reference + Analog Sensor 0V Reference + Crank Index Sensor - + Sync Sensor - | sensor_ground + trigger_in | single_source | |
| OEM-B-15 | CRNK 1P — crank sensor signal | trigger_in | KV12-D-4 | Crank Index Sensor + | trigger_in | single_source | |
| OEM-B-16 | CRNK 1M — crank sensor return | sensor_ground | KV12-C-17 + KV12-C-25 + KV12-D-5 + KV12-D-7 | Analog Sensor 0V Reference + Analog Sensor 0V Reference + Crank Index Sensor - + Sync Sensor - | sensor_ground + trigger_in | single_source | |
| OEM-B-2 | Chassis ground (LG2) | ground | KV12-A-19 + KV12-B-34 + KV12-B-9 + KV12-C-1 + KV12-C-26 | ECU Ground + ECU Ground + ECU Ground + ECU Ground + ECU Ground | ground | single_source | |
| OEM-B-3 | Ignition coil 6 | ignition_out | KV12-B-31 | Ignition Channel 6 | ignition_out | single_source | |
| OEM-B-4 | Ignition coil 5 | ignition_out | KV12-B-30 | Ignition Channel 5 | ignition_out | single_source | |
| OEM-B-6 | Ignition coil 4 | ignition_out | KV12-B-29 | Ignition Channel 4 | ignition_out | single_source | |
| OEM-B-7 | Neutral switch (M/T) / gear position (A/T) | digital_in | KV12-C-31 | Digital Input 5 | digital_in | single_source | |
| OEM-B-8 | Ignition coil 3 | ignition_out | KV12-B-28 | Ignition Channel 3 | ignition_out | single_source | |
| OEM-B-9 | CYL 2P — CYP sensor 2 signal | trigger_in | — | — | — | single_source | |
| OEM-C-1 | ECU power (IGP2) | power_in | KV12-D-1 + KV12-D-2 + KV12-D-20 | ECU 14V Supply + Auxiliary Output 13-16 14V Supply + Auxiliary Output 9-12 14V Supply | power_in | single_source | |
| OEM-C-10 | Traction control | — | — | — | — | single_source | |
| OEM-C-11 | Starter switch (STS) | digital_in | KV12-C-32 | Digital Input 6 | digital_in | single_source | |
| OEM-C-12 | Traction control | — | — | — | — | single_source | |
| OEM-C-2 | Vehicle speed sensor (VSS) | digital_in | KV12-C-27 | Digital Input 1 | digital_in | single_source | |
| OEM-C-3 | A/C switch (ACS) | digital_in | KV12-C-33 | Digital Input 7 | digital_in | single_source | |
| OEM-C-4 | Tachometer output (NEP) | tacho_out | — | — | — | single_source | |
| OEM-C-5 | A/C pressure switch (PDSW) | digital_in | KV12-C-34 | Digital Input 8 | digital_in | single_source | |
| OEM-C-6 | Traction control | — | — | — | — | single_source | |
| OEM-C-7 | Clutch switch (M/T) | digital_in | KV12-C-18 | Digital Input 9 | digital_in | single_source | |
| OEM-C-8 | Traction control | — | — | — | — | single_source | |
| OEM-C-9 | Service check connector (SCS) | digital_in | KV12-C-19 | Digital Input 10 | digital_in | single_source | |
| OEM-D-1 | Battery backup (VBU) | power_in | — | — | — | single_source | |
| OEM-D-11 | Throttle position sensor (TPS) | analog_in | KV12-C-3 | Analog Input Channel 2 | analog_in | single_source | |
| OEM-D-12 | EGR lift sensor (EGRL) | analog_in | KV12-C-8 | Analog Input Channel 7 | analog_in | single_source | |
| OEM-D-13 | Engine coolant temperature (ECT) | temp_in | KV12-C-6 | Analog Input Channel 5 | analog_in | single_source | |
| OEM-D-14 | Primary O2 sensor | lambda_nb_in | KV12-C-4 | Analog Input Channel 3 | analog_in | single_source | |
| OEM-D-15 | Intake air temperature (IAT) | temp_in | KV12-C-7 | Analog Input Channel 6 | analog_in | single_source | |
| OEM-D-16 | Secondary O2 sensor | lambda_nb_in | KV12-C-5 | Analog Input Channel 4 | analog_in | single_source | |
| OEM-D-17 | MAP sensor | analog_in | KV12-C-2 | Analog Input Channel 1 | analog_in | single_source | |
| OEM-D-18 | +5V sensor supply (VCC) | vref | KV12-D-21 | Sensor Supply Vref1: 5.0V | vref | single_source | |
| OEM-D-19 | +5V sensor supply (VCC) | vref | KV12-D-21 | Sensor Supply Vref1: 5.0V | vref | single_source | |
| OEM-D-20 | +5V sensor supply (VCC) | vref | KV12-D-21 | Sensor Supply Vref1: 5.0V | vref | single_source | |
| OEM-D-21 | Sensor ground (SG) | sensor_ground | KV12-C-17 + KV12-C-25 + KV12-D-5 + KV12-D-7 | Analog Sensor 0V Reference + Analog Sensor 0V Reference + Crank Index Sensor - + Sync Sensor - | sensor_ground + trigger_in | single_source | |
| OEM-D-22 | Sensor ground (SG) | sensor_ground | KV12-C-17 + KV12-C-25 + KV12-D-5 + KV12-D-7 | Analog Sensor 0V Reference + Analog Sensor 0V Reference + Crank Index Sensor - + Sync Sensor - | sensor_ground + trigger_in | single_source | |
| OEM-D-3 | Knock sensor — rear | knock_in | KV12-D-17 | Knock 2 + | knock_in | single_source | |
| OEM-D-4 | Knock sensor — front | knock_in | KV12-D-11 | Knock 1 + | knock_in | single_source | |
| OEM-D-5 | Traction control | — | — | — | — | single_source | |
| OEM-D-6 | Fuel pump voltage monitor (VFP) | — | — | — | — | corroborated | |
| OEM-D-8 | Ignition timing adjuster (IGADJ) | digital_in | KV12-C-20 | Digital Input 11 | digital_in | single_source | |
| OEM-D-9 | Alternator FR signal | digital_in | KV12-C-28 | Digital Input 2 | digital_in | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-25 | SP-14V-1 | 0.85 | no route | ECU power (IGP1) | — | |
| W2 | OEM-C-1 | SP-14V-1 | 0.85 | no route | ECU power (IGP2) | — | |
| W3 | SP-14V-1 | KV12-D-1 | 0.85 | no route | ECU 14V Supply | — | |
| W4 | SP-14V-1 | KV12-D-2 | 0.85 | no route | Auxiliary Output 13-16 14V Supply | — | |
| W5 | SP-14V-1 | KV12-D-20 | 0.85 | no route | Auxiliary Output 9-12 14V Supply | — | |
| W6 | OEM-A-23 | SP-GND-1 | 0.85 | no route | Power ground (PG1) | — | |
| W7 | OEM-A-24 | SP-GND-1 | 0.85 | no route | Power ground (PG2) | — | |
| W8 | OEM-B-2 | SP-GND-1 | 0.85 | no route | Chassis ground (LG2) | — | |
| W9 | SP-GND-1 | KV12-A-19 | 0.85 | no route | ECU Ground | — | |
| W10 | SP-GND-1 | KV12-B-34 | 0.85 | no route | ECU Ground | — | |
| W11 | SP-GND-1 | KV12-B-9 | 0.85 | no route | ECU Ground | — | |
| W12 | SP-GND-1 | KV12-C-1 | 0.85 | no route | ECU Ground | — | |
| W13 | SP-GND-1 | KV12-C-26 | 0.85 | no route | ECU Ground | — | |
| W14 | OEM-A-26 | SP-0V-1 | 0.5 | no route | Sensor ground (LG1) | — | |
| W15 | OEM-B-10 | SP-0V-1 | 0.5 | no route | CYL 2M — CYP sensor 2 return | — | |
| W16 | OEM-B-12 | SP-0V-1 | 0.5 | no route | CYL 1M — CYP sensor 1 return | — | |
| W17 | OEM-B-14 | SP-0V-1 | 0.5 | no route | CRNK 2M — TDC sensor return | — | |
| W18 | OEM-B-16 | SP-0V-1 | 0.5 | no route | CRNK 1M — crank sensor return | — | |
| W19 | OEM-D-21 | SP-0V-1 | 0.5 | no route | Sensor ground (SG) | — | |
| W20 | OEM-D-22 | SP-0V-1 | 0.5 | no route | Sensor ground (SG) | — | |
| W21 | SP-0V-1 | KV12-C-17 | 0.5 | no route | Analog Sensor 0V Reference | — | |
| W22 | SP-0V-1 | KV12-C-25 | 0.5 | no route | Analog Sensor 0V Reference | — | |
| W23 | OEM-D-18 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W24 | OEM-D-19 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W25 | OEM-D-20 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W26 | SP-5V1-1 | KV12-D-21 | 0.5 | no route | Sensor Supply Vref1: 5.0V | — | |
| W27 | OEM-B-15 | KV12-D-4 | 0.5 | no route | CRNK 1P — crank sensor signal | — | |
| W28 | SP-0V-1 | KV12-D-5 | 0.5 | no route | Crank Index Sensor - | — | |
| W29 | OEM-B-11 | KV12-D-6 | 0.5 | no route | CYL 1P — CYP sensor 1 signal | — | |
| W30 | SP-0V-1 | KV12-D-7 | 0.5 | no route | Sync Sensor - | — | |
| W31 | OEM-D-4 | KV12-D-11 | 0.5 | no route | Knock sensor — front | — | |
| W32 | OEM-D-3 | KV12-D-17 | 0.5 | no route | Knock sensor — rear | — | |
| W33 | OEM-A-21 | KV12-B-26 | 0.5 | no route | Ignition coil 1 | — | |
| W34 | OEM-A-22 | KV12-B-27 | 0.5 | no route | Ignition coil 2 | — | |
| W35 | OEM-B-8 | KV12-B-28 | 0.5 | no route | Ignition coil 3 | — | |
| W36 | OEM-B-6 | KV12-B-29 | 0.5 | no route | Ignition coil 4 | — | |
| W37 | OEM-B-4 | KV12-B-30 | 0.5 | no route | Ignition coil 5 | — | |
| W38 | OEM-B-3 | KV12-B-31 | 0.5 | no route | Ignition coil 6 | — | |
| W39 | OEM-A-1 | KV12-B-1 | 0.5 | no route | Injector 1 | — | |
| W40 | OEM-A-3 | KV12-B-2 | 0.5 | no route | Injector 2 | — | |
| W41 | OEM-A-5 | KV12-B-3 | 0.5 | no route | Injector 3 | — | |
| W42 | OEM-A-2 | KV12-B-4 | 0.5 | no route | Injector 4 | — | |
| W43 | OEM-A-4 | KV12-B-5 | 0.5 | no route | Injector 5 | — | |
| W44 | OEM-A-6 | KV12-B-6 | 0.5 | no route | Injector 6 | — | |
| W45 | OEM-A-8 | KV12-D-9 | 0.5 | no route | Fuel pump relay 2 (FLR2) | — | |
| W46 | OEM-A-15 | KV12-B-14 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W47 | OEM-A-18 | KV12-B-15 | 0.5 | no route | Radiator fan control (FANCNTR) | — | |
| W48 | OEM-A-7 | KV12-B-16 | 0.5 | no route | Main relay | — | |
| W49 | OEM-5-F5 | KV12-B-18 | 0.5 | no route | Front VTEC solenoid valve | — | |
| W50 | OEM-5-F7 | KV12-B-19 | 0.5 | no route | Rear VTEC solenoid valve | — | |
| W51 | OEM-A-10 | KV12-A-10 | 0.5 | no route | Front O2 sensor heater (HTCNTF) | — | |
| W52 | OEM-A-12 | KV12-A-11 | 0.5 | no route | Rear O2 sensor heater (HTCNTR) | — | |
| W53 | OEM-A-11 | KV12-B-17 | 0.5 | no route | EGR control solenoid | — | |
| W54 | OEM-A-13 | KV12-B-10 | 0.5 | no route | Check engine light (WARN) | — | |
| W55 | OEM-A-14 | KV12-B-11 | 0.5 | no route | Chamber volume control solenoid (BPS) | — | |
| W56 | OEM-A-20 | KV12-B-12 | 0.5 | no route | EVAP purge cut-off solenoid (PGS) | — | |
| W57 | OEM-A-9 | KV12-B-13 | 0.5 | no route | Idle air control valve (IACV) | — | |
| W58 | OEM-D-17 | KV12-C-2 | 0.5 | no route | MAP sensor | — | |
| W59 | OEM-D-11 | KV12-C-3 | 0.5 | no route | Throttle position sensor (TPS) | — | |
| W60 | OEM-D-14 | KV12-C-4 | 0.5 | no route | Primary O2 sensor | — | |
| W61 | OEM-D-16 | KV12-C-5 | 0.5 | no route | Secondary O2 sensor | — | |
| W62 | OEM-D-13 | KV12-C-6 | 0.5 | no route | Engine coolant temperature (ECT) | — | |
| W63 | OEM-D-15 | KV12-C-7 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W64 | OEM-D-12 | KV12-C-8 | 0.5 | no route | EGR lift sensor (EGRL) | — | |
| W65 | OEM-C-2 | KV12-C-27 | 0.5 | no route | Vehicle speed sensor (VSS) | — | |
| W66 | OEM-D-9 | KV12-C-28 | 0.5 | no route | Alternator FR signal | — | |
| W67 | OEM-5-F2 | KV12-C-29 | 0.5 | no route | Front VTEC pressure switch | — | |
| W68 | OEM-5-F4 | KV12-C-30 | 0.5 | no route | Rear VTEC pressure switch | — | |
| W69 | OEM-B-7 | KV12-C-31 | 0.5 | no route | Neutral switch (M/T) / gear position (A/T) | — | |
| W70 | OEM-C-11 | KV12-C-32 | 0.5 | no route | Starter switch (STS) | — | |
| W71 | OEM-C-3 | KV12-C-33 | 0.5 | no route | A/C switch (ACS) | — | |
| W72 | OEM-C-5 | KV12-C-34 | 0.5 | no route | A/C pressure switch (PDSW) | — | |
| W73 | OEM-C-7 | KV12-C-18 | 0.5 | no route | Clutch switch (M/T) | — | |
| W74 | OEM-C-9 | KV12-C-19 | 0.5 | no route | Service check connector (SCS) | — | |
| W75 | OEM-D-8 | KV12-C-20 | 0.5 | no route | Ignition timing adjuster (IGADJ) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 3-1437290-7 | TE | Superseal 1.0 26-way plug | 1.000 | ea |
| connector | 3-1437290-8 | TE | Superseal 1.0 26-way plug, Key 2 | 1.000 | ea |
| connector | 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 1.000 | ea |
| connector | 4-1437290-1 | TE | Superseal 1.0 34-way plug, Key 2 | 1.000 | ea |
| terminal | 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 60.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (7)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | DATASET_GAP | KV12 A | 5 of 26 cavities on KV12 A have no pin data (5,6,7,12,13). Anything there is invisible to these checks. |
| warn | NET_FAMILY | OEM-5-F5 ↔ KV12-B-18 | OEM-5-F5 "Front VTEC solenoid valve" [high_side_out] is wired to KV12-B-18 "Auxiliary Output 9" [hbridge_out]. A half-bridge can act as a high-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-5-F7 ↔ KV12-B-19 | OEM-5-F7 "Rear VTEC solenoid valve" [high_side_out] is wired to KV12-B-19 "Auxiliary Output 10" [hbridge_out]. A half-bridge can act as a high-side switch only if configured that way. |
| info | NET_FAMILY | KV12-C-17 ↔ KV12-D-5 | KV12-C-17 "Analog Sensor 0V Reference" [sensor_ground] is wired to KV12-D-5 "Crank Index Sensor -" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | NET_FAMILY | OEM-D-13 ↔ KV12-C-6 | OEM-D-13 "Engine coolant temperature (ECT)" [temp_in] is wired to KV12-C-6 "Analog Input Channel 5" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-D-15 ↔ KV12-C-7 | OEM-D-15 "Intake air temperature (IAT)" [temp_in] is wired to KV12-C-7 "Analog Input Channel 6" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | UNMAPPED | OEM | 9 optional OEM pins are not mapped: OEM-B-13 CRNK 2P — TDC sensor signal; OEM-B-9 CYL 2P — CYP sensor 2 signal; OEM-C-10 Traction control; OEM-C-12 Traction control; OEM-C-4 Tachometer output (NEP); OEM-C-6 Traction control; OEM-C-8 Traction control; OEM-D-5 Traction control; OEM-D-6 Fuel pump voltage monitor (VFP) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-D-1 | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Not wired: - OEM-D 1: Battery backup (VBU): Emtron KV12 has no battery-constant input; not needed - OEM-B 13: CRNK 2P — TDC sensor signal: no free crank_vr/frequency_in input on Emtron KV12 - OEM-B 9: CYL 2P — CYP sensor 2 signal: no free cam_vr/cam_hall/frequency_in input on Emtron KV12 - KV12-D 12: Knock 1 - left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors - KV12-D 18: Knock 2 - left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors - OEM-C 4: Tachometer output (NEP): no free tacho/frequency_out/low_side/ls_hs on Emtron KV12 - OEM-C 10: Traction control: not classified in the library; wire by hand - OEM-C 12: Traction control: not classified in the library; wire by hand - OEM-C 6: Traction control: not classified in the library; wire by hand - OEM-C 8: Traction control: not classified in the library; wire by hand - OEM-D 5: Traction control: not classified in the library; wire by hand - OEM-D 6: Fuel pump voltage monitor (VFP): not classified in the library; wire by hand - KV12-D 15: Ignition Switch Input: not fed (the stock ECU has no ignition-sense pin); feed it from a switched-ignition source
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | AEM EMS 30-1042 (Series 1) plug-and-play install manual — 1991-94 NSX | https://fancy-craft.firebaseapp.com/NSX/report/ecu/EMS_-_30-1042.pdf | archive | 2026-10-05 | 0cad10bc64b5 |
| 4 | vendor_doc | Emtron KV12/KV16 Pinout Rev2 | https://github.com/emtron-australia/help | — | 2026-10-05 | 2f3a1b2d2ed4 |
| 3 | vendor_doc | dodo-upgrades: Honda OBD1 V6 ECU pinout | https://dodo-upgrades.nl/index.php/obd1-v6-pinouts/ | archive | 2026-10-05 | f9539af28904 |