MX-5 Miata Mazdaspeed 2004-05 (BP-ZET turbo, no VVT) → Emtron KV8 (auto)
MX-5 Miata Mazdaspeed 2004-05 (BP-ZET turbo, no VVT) — Emtron — KV8
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-17
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 | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 66 wires · 12 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-2-P | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | KV8-D-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | KV8-D-2 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-14V-1 | KV8-D-20 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-3-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-3-B | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-4-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | KV8-B-34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | KV8-B-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | KV8-C-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | KV8-C-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-4-O | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | KV8-C-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | KV8-C-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-4-L | KV8-D-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-3-Y | KV8-D-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | KV8-D-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-3-V | KV8-D-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | KV8-D-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-4-M | KV8-D-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-3-F | KV8-B-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-3-I | KV8-B-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-2-A | KV8-B-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-2-D | KV8-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-2-G | KV8-B-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-2-J | KV8-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-4-X | KV8-C-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-4-V | KV8-C-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-4-P | KV8-C-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-4-S | KV8-D-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-2-B | KV8-D-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-2-C | KV8-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-2-K | KV8-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-2-M | KV8-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-3-H | KV8-B-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-2-O | KV8-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-4-D | RLY1-R-OUT | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | SP-14V-1 | RLY1-R-IN | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | RLY1-R-COIL- | KV8-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-4-E | RLY2-R-OUT | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | SP-14V-1 | RLY2-R-IN | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | SP-14V-1 | RLY2-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | RLY2-R-COIL- | KV8-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-3-J | KV8-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-3-P | KV8-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-2-Q | KV8-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-2-E | KV8-B-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-2-F | KV8-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-2-H | KV8-B-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-2-I | KV8-B-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-4-AE | KV8-C-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-4-AA | KV8-C-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-4-W | KV8-C-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-4-R | KV8-C-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-4-N | KV8-C-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-4-AD | KV8-C-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-3-T | KV8-C-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-3-S | KV8-C-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-4-B | KV8-C-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-4-C | KV8-C-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-4-F | KV8-C-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-4-H | KV8-C-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-4-I | KV8-C-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-4-J | KV8-C-34 | 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 | KV8-D-1 | KV8-B-34 | open (OL) | +12 V supply must not touch power ground | |
| 2 | KV8-D-1 | KV8-C-17 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | KV8-D-21 | KV8-C-17 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 4 | RLY1-R-OUT | KV8-C-17 | open (OL) | +12 V supply must not touch sensor ground | |
| 5 | RLY2-R-OUT | KV8-C-17 | open (OL) | +12 V supply must not touch sensor ground | |
| 6 | KV8-B-34 | KV8-D-21 | open (OL) | power ground must not touch 5 V sensor reference | |
| 7 | KV8-B-34 | RLY1-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 8 | KV8-B-34 | RLY2-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 9 | KV8-D-1 | KV8-D-21 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 10 | RLY1-R-OUT | KV8-D-21 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 11 | RLY2-R-OUT | KV8-D-21 | 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
KV8-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | — | — | — | — | — | — | — |
| 2 | — | — | — | — | — | — | — | — | — |
| 3 | — | — | — | — | — | — | — | — | — |
| 4 | — | — | — | — | — | — | — | — | — |
| 5 | — | — | — | — | — | — | — | — | — |
| 6 | — | — | — | — | — | — | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | — | — | — | — | — | — | — | — | — |
| 10 | Lambda 1 heater − | — | W46 | — | 0.5 | OEM-3-J | — | — | — |
| 11 | Lambda 2 heater − | — | W47 | — | 0.5 | OEM-3-P | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | Lambda 1 heater + | — | — | — | — | — | — | — | — |
| 17 | Lambda 2 heater + | — | — | — | — | — | — | — | — |
| 18 | Lambda 1 Nernst cell (Vs) | — | — | — | — | — | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | Lambda 2 cal resistor | — | — | — | — | — | — | — | — |
| 21 | Lambda 2 Nernst cell (Vs) | — | — | — | — | — | — | — | — |
| 22 | Lambda 2 pump cell (Ip) | — | — | — | — | — | — | — | — |
| 23 | Lambda 2 virtual ground | — | — | — | — | — | — | — | — |
| 24 | Lambda 1 cal resistor | — | — | — | — | — | — | — | — |
| 25 | Lambda 1 pump cell (Ip) | — | — | — | — | — | — | — | — |
| 26 | Lambda 1 virtual ground | — | — | — | — | — | — | — | — |
KV8-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injection 1 | — | W24 | — | 0.5 | OEM-2-A | — | — | — |
| 2 | Injection 2 | — | W25 | — | 0.5 | OEM-2-D | — | — | — |
| 3 | Injection 3 | — | W26 | — | 0.5 | OEM-2-G | — | — | — |
| 4 | Injection 4 | — | W27 | — | 0.5 | OEM-2-J | — | — | — |
| 5 | Injection 5 | — | W49 | — | 0.5 | OEM-2-E | — | — | — |
| 6 | Injection 6 | — | W50 | — | 0.5 | OEM-2-F | — | — | — |
| 7 | Injection 7 | — | W51 | — | 0.5 | OEM-2-H | — | — | — |
| 8 | Injection 8 | — | W52 | — | 0.5 | OEM-2-I | — | — | — |
| 9 | ECU ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Aux 1 | — | W37 | — | 0.5 | OEM-2-O | — | — | — |
| 11 | Aux 2 | — | W41 | — | 0.5 | RLY1-R-COIL- | — | — | — |
| 12 | Aux 3 | — | W45 | — | 0.5 | RLY2-R-COIL- | — | — | — |
| 13 | Aux 4 | — | W48 | — | 0.5 | OEM-2-Q | — | — | — |
| 14 | Aux 5 | — | W33 | — | 0.5 | OEM-2-C | — | — | — |
| 15 | Aux 6 | — | W34 | — | 0.5 | OEM-2-K | — | — | — |
| 16 | Aux 7 | — | W35 | — | 0.5 | OEM-2-M | — | — | — |
| 17 | Aux 8 | — | W36 | — | 0.5 | OEM-3-H | — | — | — |
| 18 | Aux 9 | — | — | — | — | — | — | — | — |
| 19 | Aux 10 | — | — | — | — | — | — | — | — |
| 20 | Aux 11 | — | — | — | — | — | — | — | — |
| 21 | Aux 12 | — | — | — | — | — | — | — | — |
| 22 | Aux 13 | — | — | — | — | — | — | — | — |
| 23 | Aux 14 | — | — | — | — | — | — | — | — |
| 24 | Aux 15 | — | — | — | — | — | — | — | — |
| 25 | Aux 16 | — | — | — | — | — | — | — | — |
| 26 | Ignition 1 | — | W22 | — | 0.5 | OEM-3-F | — | — | — |
| 27 | Ignition 2 | — | W23 | — | 0.5 | OEM-3-I | — | — | — |
| 28 | Ignition 3 | — | — | — | — | — | — | — | — |
| 29 | Ignition 4 | — | — | — | — | — | — | — | — |
| 30 | Ignition 5 | — | — | — | — | — | — | — | — |
| 31 | Ignition 6 | — | — | — | — | — | — | — | — |
| 32 | Ignition 7 | — | — | — | — | — | — | — | — |
| 33 | Ignition 8 | — | — | — | — | — | — | — | — |
| 34 | ECU ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
KV8-C
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Analog in 1 | — | W28 | — | 0.5 | OEM-4-X | — | — | — |
| 3 | Analog in 2 | — | W29 | — | 0.5 | OEM-4-V | — | — | — |
| 4 | Analog in 3 | — | W30 | — | 0.5 | OEM-4-P | — | — | — |
| 5 | Analog in 4 | — | W53 | — | 0.5 | OEM-4-AE | — | — | — |
| 6 | Analog in 5 | — | W54 | — | 0.5 | OEM-4-AA | — | — | — |
| 7 | Analog in 6 | — | W55 | — | 0.5 | OEM-4-W | — | — | — |
| 8 | Analog in 7 | — | W56 | — | 0.5 | OEM-4-R | — | — | — |
| 9 | Analog in 8 | — | W57 | — | 0.5 | OEM-4-N | — | — | — |
| 10 | Analog in 9 | — | W58 | — | 0.5 | OEM-4-AD | — | — | — |
| 11 | Analog in 10 | — | — | — | — | — | — | — | — |
| 12 | Analog in 11 | — | — | — | — | — | — | — | — |
| 13 | Analog in 12 | — | — | — | — | — | — | — | — |
| 14 | Analog in 13 | — | — | — | — | — | — | — | — |
| 15 | Analog in 14 | — | — | — | — | — | — | — | — |
| 16 | Analog in 15 | — | — | — | — | — | — | — | — |
| 17 | Analog sensor 0V reference | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 18 | Digital in 9 | — | — | — | — | — | — | — | — |
| 19 | Digital in 10 | — | — | — | — | — | — | — | — |
| 20 | Digital in 11 | — | — | — | — | — | — | — | — |
| 21 | Digital in 12 | — | — | — | — | — | — | — | — |
| 22 | Digital in 13 | — | — | — | — | — | — | — | — |
| 23 | Digital in 14 | — | — | — | — | — | — | — | — |
| 24 | Analog in 16 | — | — | — | — | — | — | — | — |
| 25 | Analog sensor 0V reference | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 26 | ECU ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 27 | Digital in 1 | — | W59 | — | 0.5 | OEM-3-T | — | — | — |
| 28 | Digital in 2 | — | W60 | — | 0.5 | OEM-3-S | — | — | — |
| 29 | Digital in 3 | — | W61 | — | 0.5 | OEM-4-B | — | — | — |
| 30 | Digital in 4 | — | W62 | — | 0.5 | OEM-4-C | — | — | — |
| 31 | Digital in 5 | — | W63 | — | 0.5 | OEM-4-F | — | — | — |
| 32 | Digital in 6 | — | W64 | — | 0.5 | OEM-4-H | — | — | — |
| 33 | Digital in 7 | — | W65 | — | 0.5 | OEM-4-I | — | — | — |
| 34 | Digital in 8 | — | W66 | — | 0.5 | OEM-4-J | — | — | — |
KV8-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 | Aux 13–16 14V supply | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Sensor supply 8V | — | — | — | — | — | — | — | — |
| 4 | Crank index sensor + | — | W17 | — | 0.5 | OEM-3-Y | — | — | — |
| 5 | Crank index sensor − | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sync sensor + | — | W19 | — | 0.5 | OEM-3-V | — | — | — |
| 7 | Sync sensor − | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | CAN 1 H | — | — | — | — | — | — | — | — |
| 9 | EFI relay output (low side, 200 mA) | — | W32 | — | 0.5 | OEM-2-B | — | — | — |
| 10 | CAN 2 H | — | — | — | — | — | — | — | — |
| 11 | Knock 1 + | — | W21 | — | 0.5 | OEM-4-M | — | — | — |
| 12 | Knock 1 − | — | — | — | — | — | — | — | — |
| 13 | Shield (crank/cam/knock) | — | — | — | — | — | — | — | — |
| 14 | CAN 1 L | — | — | — | — | — | — | — | — |
| 15 | Ignition switch input | — | W31 | — | 0.5 | OEM-4-S | — | — | — |
| 16 | CAN 2 L | — | — | — | — | — | — | — | — |
| 17 | Knock 2 + | — | — | — | — | — | — | — | — |
| 18 | Knock 2 − | — | — | — | — | — | — | — | — |
| 19 | Analog output 0–5V | — | — | — | — | — | — | — | — |
| 20 | Aux 9–12 14V supply | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| 21 | Sensor supply Vref1 5.0V | — | W16 | — | 0.5 | OEM-4-L | — | — | — |
| 22 | Sensor supply Vref2 5.0V | — | — | — | — | — | — | — | — |
| 23 | Ethernet Tx+ | — | — | — | — | — | — | — | — |
| 24 | Ethernet Tx− | — | — | — | — | — | — | — | — |
| 25 | Ethernet Rx+ | — | — | — | — | — | — | — | — |
| 26 | Ethernet Rx− | — | — | — | — | — | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Injector 1 | — | W24 | — | 0.5 | KV8-B-1 | — | — | — |
| B | Cooling fan relay | — | W32 | — | 0.5 | KV8-D-9 | — | — | — |
| C | Condenser fan relay | — | W33 | — | 0.5 | KV8-B-14 | — | — | — |
| D | Injector 2 | — | W25 | — | 0.5 | KV8-B-2 | — | — | — |
| E | EGR valve | — | W49 | — | 0.5 | KV8-B-5 | — | — | — |
| F | EGR valve | — | W50 | — | 0.5 | KV8-B-6 | — | — | — |
| G | Injector 3 | — | W26 | — | 0.5 | KV8-B-3 | — | — | — |
| H | EGR valve | — | W51 | — | 0.5 | KV8-B-7 | — | — | — |
| I | EGR valve | — | W52 | — | 0.5 | KV8-B-8 | — | — | — |
| J | Injector 4 | — | W27 | — | 0.5 | KV8-B-4 | — | — | — |
| K | A/C clutch relay | — | W34 | — | 0.5 | KV8-B-15 | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Fuel pump relay | — | W35 | — | 0.5 | KV8-B-16 | — | — | — |
| N | VTCS solenoid (intake butterflies) | — | — | — | — | — | — | — | — |
| O | Fuel pump relay (non-immobiliser) | — | W37 | — | 0.5 | KV8-B-10 | — | — | — |
| P | ISC valve +14V feed | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| Q | ISC valve low side | — | W48 | — | 0.5 | KV8-B-13 | — | — | — |
| R | Malfunction indicator lamp (MIL) | — | — | — | — | — | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| C | Purge solenoid valve | — | — | — | — | — | — | — | — |
| D | EGR boost solenoid | — | — | — | — | — | — | — | — |
| E | NC | — | — | — | — | — | — | — | — |
| F | Ignition 1 (coils 1+4, wasted spark) | — | W22 | — | 0.5 | KV8-B-26 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Main relay | — | W36 | — | 0.5 | KV8-B-17 | — | — | — |
| I | Ignition 2 (coils 2+3, wasted spark) | — | W23 | — | 0.5 | KV8-B-27 | — | — | — |
| J | Front O2 heater | — | W46 | — | 0.5 | KV8-A-10 | — | — | — |
| K | EVAP leak detection pump | — | — | — | — | — | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Alternator control | — | — | — | — | — | — | — | — |
| N | NC | — | — | — | — | — | — | — | — |
| O | Tachometer output | — | — | — | — | — | — | — | — |
| P | Rear O2 heater | — | W47 | — | 0.5 | KV8-A-11 | — | — | — |
| Q | Data link connector (K-line) | — | — | — | — | — | — | — | — |
| R | NC | — | — | — | — | — | — | — | — |
| S | Immobiliser | — | W60 | — | 0.5 | KV8-C-28 | — | — | — |
| T | Vehicle speed | — | W59 | — | 0.5 | KV8-C-27 | — | — | — |
| U | Charge lamp | — | — | — | — | — | — | — | — |
| V | Cam position (CMP) | — | W19 | — | 0.5 | KV8-D-6 | — | — | — |
| W | NC | — | — | — | — | — | — | — | — |
| X | NC | — | — | — | — | — | — | — | — |
| Y | Crank position (CKP) | — | W17 | — | 0.5 | KV8-D-4 | — | — | — |
| Z | NC | — | — | — | — | — | — | — | — |
OEM-4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| AA | Rear O2 signal | — | W54 | — | 0.5 | KV8-C-6 | — | — | — |
| AB | NC | — | — | — | — | — | — | — | — |
| AC | Data link connector (DLC TEN, turbo) | — | — | — | — | — | — | — | — |
| AD | Fuel level | — | W58 | — | 0.5 | KV8-C-10 | — | — | — |
| AE | BARO/MAP sensor (turbo boost pressure) | — | W53 | — | 0.5 | KV8-C-5 | — | — | — |
| AF | ECU power +14V (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| AG | Constant +12V | — | — | — | — | — | — | — | — |
| AH | EVAP leak detection pump solenoid valve | — | — | — | — | — | — | — | — |
| B | Brake switch | — | W61 | — | 0.5 | KV8-C-29 | — | — | — |
| C | Power steering pressure switch | — | W62 | — | 0.5 | KV8-C-30 | — | — | — |
| D | Boost control solenoid (turbo) | — | W38 | — | 0.5 | RLY1-R-OUT | — | — | — |
| E | Boost control solenoid (turbo) | — | W42 | — | 0.5 | RLY2-R-OUT | — | — | — |
| F | A/C request | — | W63 | — | 0.5 | KV8-C-31 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Neutral switch | — | W64 | — | 0.5 | KV8-C-32 | — | — | — |
| I | Clutch switch | — | W65 | — | 0.5 | KV8-C-33 | — | — | — |
| J | VTCS vacuum switch | — | W66 | — | 0.5 | KV8-C-34 | — | — | — |
| K | NC | — | — | — | — | — | — | — | — |
| L | +5V sensor supply | — | W16 | — | 0.5 | KV8-D-21 | — | — | — |
| M | Knock sensor | — | W21 | — | 0.5 | KV8-D-11 | — | — | — |
| N | Intake air temperature (IAT) | — | W57 | — | 0.5 | KV8-C-9 | — | — | — |
| O | Signal ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| P | Coolant temperature (ECT) | — | W30 | — | 0.5 | KV8-C-4 | — | — | — |
| Q | NC | — | — | — | — | — | — | — | — |
| R | Intake air temperature 2 (IAT2, turbo) | — | W56 | — | 0.5 | KV8-C-8 | — | — | — |
| S | Ignition switch (IG1) sense | — | W31 | — | 0.5 | KV8-D-15 | — | — | — |
| T | Generator output voltage (terminal P) | — | — | — | — | — | — | — | — |
| U | NC | — | — | — | — | — | — | — | — |
| V | Throttle position (TPS) | — | W29 | — | 0.5 | KV8-C-3 | — | — | — |
| W | Front O2 signal | — | W55 | — | 0.5 | KV8-C-7 | — | — | — |
| X | Mass air flow (MAF) | — | W28 | — | 0.5 | KV8-C-2 | — | — | — |
| Y | NC | — | — | — | — | — | — | — | — |
| Z | TCM (automatic only) | — | — | — | — | — | — | — | — |
RLY1-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (switched +12 V) | — | W40 | — | 0.5 | SP-14V-1 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W41 | — | 0.5 | KV8-B-11 | — | — | — |
| IN | Relay contact input (switched +12 V) | — | W39 | — | 0.5 | SP-14V-1 | — | — | — |
| OUT | Relay contact output (switched +12 V to load) | — | W38 | — | 0.5 | OEM-4-D | — | — | — |
RLY2-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (switched +12 V) | — | W44 | — | 0.5 | SP-14V-1 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W45 | — | 0.5 | KV8-B-12 | — | — | — |
| IN | Relay contact input (switched +12 V) | — | W43 | — | 0.5 | SP-14V-1 | — | — | — |
| OUT | Relay contact output (switched +12 V to load) | — | W42 | — | 0.5 | OEM-4-E | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-4-O | — | — | — |
| 1 | — | — | W14 | — | 0.5 | KV8-C-17 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | KV8-C-25 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | KV8-D-5 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | KV8-D-7 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-2-P | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-4-AF | — | — | — |
| 1 | — | — | W3 | — | 0.85 | KV8-D-1 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | KV8-D-2 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | KV8-D-20 | — | — | — |
| 1 | — | — | W39 | — | 0.5 | RLY1-R-IN | — | — | — |
| 1 | — | — | W40 | — | 0.5 | RLY1-R-COIL+ | — | — | — |
| 1 | — | — | W43 | — | 0.5 | RLY2-R-IN | — | — | — |
| 1 | — | — | W44 | — | 0.5 | RLY2-R-COIL+ | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W6 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-3-B | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-4-A | — | — | — |
| 1 | — | — | W9 | — | 0.85 | KV8-B-34 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | KV8-B-9 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | KV8-C-1 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | KV8-C-26 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-2-A | Injector 1 | injector_out | KV8-B-1 | Injection 1 | injector_out | corroborated | |
| OEM-2-B | Cooling fan relay | low_side_out | KV8-D-9 | EFI relay output (low side, 200 mA) | low_side_out | corroborated | |
| OEM-2-C | Condenser fan relay | low_side_out | KV8-B-14 | Aux 5 | low_side_out | corroborated | |
| OEM-2-D | Injector 2 | injector_out | KV8-B-2 | Injection 2 | injector_out | corroborated | |
| OEM-2-E | EGR valve | low_side_out | KV8-B-5 | Injection 5 | injector_out | corroborated | |
| OEM-2-F | EGR valve | low_side_out | KV8-B-6 | Injection 6 | injector_out | corroborated | |
| OEM-2-G | Injector 3 | injector_out | KV8-B-3 | Injection 3 | injector_out | corroborated | |
| OEM-2-H | EGR valve | low_side_out | KV8-B-7 | Injection 7 | injector_out | corroborated | |
| OEM-2-I | EGR valve | low_side_out | KV8-B-8 | Injection 8 | injector_out | corroborated | |
| OEM-2-J | Injector 4 | injector_out | KV8-B-4 | Injection 4 | injector_out | corroborated | |
| OEM-2-K | A/C clutch relay | low_side_out | KV8-B-15 | Aux 6 | low_side_out | corroborated | |
| OEM-2-L | NC | — | — | — | — | single_source | |
| OEM-2-M | Fuel pump relay | low_side_out | KV8-B-16 | Aux 7 | low_side_out | corroborated | |
| OEM-2-N | VTCS solenoid (intake butterflies) | low_side_out | — | — | — | corroborated | |
| OEM-2-O | Fuel pump relay (non-immobiliser) | low_side_out | KV8-B-10 | Aux 1 | low_side_out | corroborated | |
| OEM-2-P | ISC valve +14V feed | power_in | KV8-D-1 + KV8-D-2 + KV8-D-20 + RLY1-R-COIL+ + RLY1-R-IN + RLY2-R-COIL+ + RLY2-R-IN | ECU 14V supply + Aux 13–16 14V supply + Aux 9–12 14V supply + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) | power_in + power_out | corroborated | |
| OEM-2-Q | ISC valve low side | low_side_out | KV8-B-13 | Aux 4 | low_side_out | corroborated | |
| OEM-2-R | Malfunction indicator lamp (MIL) | low_side_out | — | — | — | corroborated | |
| OEM-3-A | Power ground | ground | KV8-B-34 + KV8-B-9 + KV8-C-1 + KV8-C-26 | ECU ground + ECU ground + ECU ground + ECU ground | ground | corroborated | |
| OEM-3-B | Power ground | ground | KV8-B-34 + KV8-B-9 + KV8-C-1 + KV8-C-26 | ECU ground + ECU ground + ECU ground + ECU ground | ground | corroborated | |
| OEM-3-C | Purge solenoid valve | low_side_out | — | — | — | corroborated | |
| OEM-3-D | EGR boost solenoid | — | — | — | — | conflict | |
| OEM-3-E | NC | — | — | — | — | single_source | |
| OEM-3-F | Ignition 1 (coils 1+4, wasted spark) | ignition_out | KV8-B-26 | Ignition 1 | ignition_out | corroborated | |
| OEM-3-G | NC | — | — | — | — | single_source | |
| OEM-3-H | Main relay | low_side_out | KV8-B-17 | Aux 8 | low_side_out | corroborated | |
| OEM-3-I | Ignition 2 (coils 2+3, wasted spark) | ignition_out | KV8-B-27 | Ignition 2 | ignition_out | corroborated | |
| OEM-3-J | Front O2 heater | low_side_out | KV8-A-10 | Lambda 1 heater − | low_side_out | corroborated | |
| OEM-3-K | EVAP leak detection pump | low_side_out | — | — | — | corroborated | |
| OEM-3-L | NC | — | — | — | — | single_source | |
| OEM-3-M | Alternator control | low_side_out | — | — | — | corroborated | |
| OEM-3-N | NC | — | — | — | — | single_source | |
| OEM-3-O | Tachometer output | tacho_out | — | — | — | corroborated | |
| OEM-3-P | Rear O2 heater | low_side_out | KV8-A-11 | Lambda 2 heater − | low_side_out | corroborated | |
| OEM-3-Q | Data link connector (K-line) | serial | — | — | — | corroborated | |
| OEM-3-R | NC | — | — | — | — | single_source | |
| OEM-3-S | Immobiliser | digital_in | KV8-C-28 | Digital in 2 | digital_in | corroborated | |
| OEM-3-T | Vehicle speed | digital_in | KV8-C-27 | Digital in 1 | digital_in | corroborated | |
| OEM-3-U | Charge lamp | low_side_out | — | — | — | corroborated | |
| OEM-3-V | Cam position (CMP) | trigger_in | KV8-D-6 | Sync sensor + | trigger_in | corroborated | |
| OEM-3-W | NC | — | — | — | — | single_source | |
| OEM-3-X | NC | — | — | — | — | single_source | |
| OEM-3-Y | Crank position (CKP) | trigger_in | KV8-D-4 | Crank index sensor + | trigger_in | corroborated | |
| OEM-3-Z | NC | — | — | — | — | single_source | |
| OEM-4-A | Power ground | ground | KV8-B-34 + KV8-B-9 + KV8-C-1 + KV8-C-26 | ECU ground + ECU ground + ECU ground + ECU ground | ground | corroborated | |
| OEM-4-AA | Rear O2 signal | lambda_nb_in | KV8-C-6 | Analog in 5 | analog_in | corroborated | |
| OEM-4-AB | NC | — | — | — | — | single_source | |
| OEM-4-AC | Data link connector (DLC TEN, turbo) | serial | — | — | — | BrY | single_source |
| OEM-4-AD | Fuel level | analog_in | KV8-C-10 | Analog in 9 | analog_in | corroborated | |
| OEM-4-AE | BARO/MAP sensor (turbo boost pressure) | analog_in | KV8-C-5 | Analog in 4 | analog_in | LY | single_source |
| OEM-4-AF | ECU power +14V (main relay) | power_in | KV8-D-1 + KV8-D-2 + KV8-D-20 + RLY1-R-COIL+ + RLY1-R-IN + RLY2-R-COIL+ + RLY2-R-IN | ECU 14V supply + Aux 13–16 14V supply + Aux 9–12 14V supply + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) | power_in + power_out | corroborated | |
| OEM-4-AG | Constant +12V | power_in | — | — | — | corroborated | |
| OEM-4-AH | EVAP leak detection pump solenoid valve | low_side_out | — | — | — | corroborated | |
| OEM-4-B | Brake switch | digital_in | KV8-C-29 | Digital in 3 | digital_in | corroborated | |
| OEM-4-C | Power steering pressure switch | digital_in | KV8-C-30 | Digital in 4 | digital_in | corroborated | |
| OEM-4-D | Boost control solenoid (turbo) | high_side_out | RLY1-R-OUT | Relay contact output (switched +12 V to load) | power_out | Y | single_source |
| OEM-4-E | Boost control solenoid (turbo) | high_side_out | RLY2-R-OUT | Relay contact output (switched +12 V to load) | power_out | Y | single_source |
| OEM-4-F | A/C request | digital_in | KV8-C-31 | Digital in 5 | digital_in | corroborated | |
| OEM-4-G | NC | — | — | — | — | single_source | |
| OEM-4-H | Neutral switch | digital_in | KV8-C-32 | Digital in 6 | digital_in | corroborated | |
| OEM-4-I | Clutch switch | digital_in | KV8-C-33 | Digital in 7 | digital_in | corroborated | |
| OEM-4-J | VTCS vacuum switch | digital_in | KV8-C-34 | Digital in 8 | digital_in | corroborated | |
| OEM-4-K | NC | — | — | — | — | single_source | |
| OEM-4-L | +5V sensor supply | vref | KV8-D-21 | Sensor supply Vref1 5.0V | vref | corroborated | |
| OEM-4-M | Knock sensor | knock_in | KV8-D-11 | Knock 1 + | knock_in | corroborated | |
| OEM-4-N | Intake air temperature (IAT) | temp_in | KV8-C-9 | Analog in 8 | analog_in | corroborated | |
| OEM-4-O | Signal ground | sensor_ground | KV8-C-17 + KV8-C-25 + KV8-D-5 + KV8-D-7 | Analog sensor 0V reference + Analog sensor 0V reference + Crank index sensor − + Sync sensor − | sensor_ground + trigger_in | corroborated | |
| OEM-4-P | Coolant temperature (ECT) | temp_in | KV8-C-4 | Analog in 3 | analog_in | corroborated | |
| OEM-4-Q | NC | — | — | — | — | single_source | |
| OEM-4-R | Intake air temperature 2 (IAT2, turbo) | temp_in | KV8-C-8 | Analog in 7 | analog_in | VY | single_source |
| OEM-4-S | Ignition switch (IG1) sense | digital_in | KV8-D-15 | Ignition switch input | digital_in | corroborated | |
| OEM-4-T | Generator output voltage (terminal P) | — | — | — | — | corroborated | |
| OEM-4-U | NC | — | — | — | — | single_source | |
| OEM-4-V | Throttle position (TPS) | analog_in | KV8-C-3 | Analog in 2 | analog_in | corroborated | |
| OEM-4-W | Front O2 signal | lambda_nb_in | KV8-C-7 | Analog in 6 | analog_in | corroborated | |
| OEM-4-X | Mass air flow (MAF) | analog_in | KV8-C-2 | Analog in 1 | analog_in | corroborated | |
| OEM-4-Y | NC | — | — | — | — | single_source | |
| OEM-4-Z | TCM (automatic only) | — | — | — | — | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-2-P | SP-14V-1 | 0.85 | no route | ISC valve +14V feed | — | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | no route | ECU power +14V (main relay) | — | |
| W3 | SP-14V-1 | KV8-D-1 | 0.85 | no route | ECU 14V supply | — | |
| W4 | SP-14V-1 | KV8-D-2 | 0.85 | no route | Aux 13–16 14V supply | — | |
| W5 | SP-14V-1 | KV8-D-20 | 0.85 | no route | Aux 9–12 14V supply | — | |
| W6 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | OEM-3-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | OEM-4-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W9 | SP-GND-1 | KV8-B-34 | 0.85 | no route | ECU ground | — | |
| W10 | SP-GND-1 | KV8-B-9 | 0.85 | no route | ECU ground | — | |
| W11 | SP-GND-1 | KV8-C-1 | 0.85 | no route | ECU ground | — | |
| W12 | SP-GND-1 | KV8-C-26 | 0.85 | no route | ECU ground | — | |
| W13 | OEM-4-O | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W14 | SP-0V-1 | KV8-C-17 | 0.5 | no route | Analog sensor 0V reference | — | |
| W15 | SP-0V-1 | KV8-C-25 | 0.5 | no route | Analog sensor 0V reference | — | |
| W16 | OEM-4-L | KV8-D-21 | 0.5 | no route | +5V sensor supply | — | |
| W17 | OEM-3-Y | KV8-D-4 | 0.5 | no route | Crank position (CKP) | — | |
| W18 | SP-0V-1 | KV8-D-5 | 0.5 | no route | Crank index sensor − | — | |
| W19 | OEM-3-V | KV8-D-6 | 0.5 | no route | Cam position (CMP) | — | |
| W20 | SP-0V-1 | KV8-D-7 | 0.5 | no route | Sync sensor − | — | |
| W21 | OEM-4-M | KV8-D-11 | 0.5 | no route | Knock sensor | — | |
| W22 | OEM-3-F | KV8-B-26 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W23 | OEM-3-I | KV8-B-27 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W24 | OEM-2-A | KV8-B-1 | 0.5 | no route | Injector 1 | — | |
| W25 | OEM-2-D | KV8-B-2 | 0.5 | no route | Injector 2 | — | |
| W26 | OEM-2-G | KV8-B-3 | 0.5 | no route | Injector 3 | — | |
| W27 | OEM-2-J | KV8-B-4 | 0.5 | no route | Injector 4 | — | |
| W28 | OEM-4-X | KV8-C-2 | 0.5 | no route | Mass air flow (MAF) | — | |
| W29 | OEM-4-V | KV8-C-3 | 0.5 | no route | Throttle position (TPS) | — | |
| W30 | OEM-4-P | KV8-C-4 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W31 | OEM-4-S | KV8-D-15 | 0.5 | no route | Ignition switch (IG1) sense | — | |
| W32 | OEM-2-B | KV8-D-9 | 0.5 | no route | Cooling fan relay | — | |
| W33 | OEM-2-C | KV8-B-14 | 0.5 | no route | Condenser fan relay | — | |
| W34 | OEM-2-K | KV8-B-15 | 0.5 | no route | A/C clutch relay | — | |
| W35 | OEM-2-M | KV8-B-16 | 0.5 | no route | Fuel pump relay | — | |
| W36 | OEM-3-H | KV8-B-17 | 0.5 | no route | Main relay | — | |
| W37 | OEM-2-O | KV8-B-10 | 0.5 | no route | Fuel pump relay (non-immobiliser) | — | |
| W38 | OEM-4-D | RLY1-R-OUT | 0.5 | no route | Boost control solenoid (turbo) | — | |
| W39 | SP-14V-1 | RLY1-R-IN | 0.5 | no route | Relay contact input (switched +12 V) | — | |
| W40 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | no route | Relay coil positive (switched +12 V) | — | |
| W41 | RLY1-R-COIL- | KV8-B-11 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W42 | OEM-4-E | RLY2-R-OUT | 0.5 | no route | Boost control solenoid (turbo) | — | |
| W43 | SP-14V-1 | RLY2-R-IN | 0.5 | no route | Relay contact input (switched +12 V) | — | |
| W44 | SP-14V-1 | RLY2-R-COIL+ | 0.5 | no route | Relay coil positive (switched +12 V) | — | |
| W45 | RLY2-R-COIL- | KV8-B-12 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W46 | OEM-3-J | KV8-A-10 | 0.5 | no route | Front O2 heater | — | |
| W47 | OEM-3-P | KV8-A-11 | 0.5 | no route | Rear O2 heater | — | |
| W48 | OEM-2-Q | KV8-B-13 | 0.5 | no route | ISC valve low side | — | |
| W49 | OEM-2-E | KV8-B-5 | 0.5 | no route | EGR valve | — | |
| W50 | OEM-2-F | KV8-B-6 | 0.5 | no route | EGR valve | — | |
| W51 | OEM-2-H | KV8-B-7 | 0.5 | no route | EGR valve | — | |
| W52 | OEM-2-I | KV8-B-8 | 0.5 | no route | EGR valve | — | |
| W53 | OEM-4-AE | KV8-C-5 | 0.5 | no route | BARO/MAP sensor (turbo boost pressure) | — | |
| W54 | OEM-4-AA | KV8-C-6 | 0.5 | no route | Rear O2 signal | — | |
| W55 | OEM-4-W | KV8-C-7 | 0.5 | no route | Front O2 signal | — | |
| W56 | OEM-4-R | KV8-C-8 | 0.5 | no route | Intake air temperature 2 (IAT2, turbo) | — | |
| W57 | OEM-4-N | KV8-C-9 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W58 | OEM-4-AD | KV8-C-10 | 0.5 | no route | Fuel level | — | |
| W59 | OEM-3-T | KV8-C-27 | 0.5 | no route | Vehicle speed | — | |
| W60 | OEM-3-S | KV8-C-28 | 0.5 | no route | Immobiliser | — | |
| W61 | OEM-4-B | KV8-C-29 | 0.5 | no route | Brake switch | — | |
| W62 | OEM-4-C | KV8-C-30 | 0.5 | no route | Power steering pressure switch | — | |
| W63 | OEM-4-F | KV8-C-31 | 0.5 | no route | A/C request | — | |
| W64 | OEM-4-H | KV8-C-32 | 0.5 | no route | Neutral switch | — | |
| W65 | OEM-4-I | KV8-C-33 | 0.5 | no route | Clutch switch | — | |
| W66 | OEM-4-J | KV8-C-34 | 0.5 | no route | VTCS vacuum switch | — |
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) | 54.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (10)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | DATASET_GAP | KV8 A | 14 of 26 cavities on KV8 A have no pin data (1,2,3,4,5,6,7,8,9,12,13,14,15,19). Anything there is invisible to these checks. |
| info | NET_FAMILY | KV8-C-17 ↔ KV8-D-5 | KV8-C-17 "Analog sensor 0V reference" [sensor_ground] is wired to KV8-D-5 "Crank index sensor −" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | NET_FAMILY | OEM-2-E ↔ KV8-B-5 | OEM-2-E "EGR valve" [low_side_out] is wired to KV8-B-5 "Injection 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-F ↔ KV8-B-6 | OEM-2-F "EGR valve" [low_side_out] is wired to KV8-B-6 "Injection 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-H ↔ KV8-B-7 | OEM-2-H "EGR valve" [low_side_out] is wired to KV8-B-7 "Injection 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-I ↔ KV8-B-8 | OEM-2-I "EGR valve" [low_side_out] is wired to KV8-B-8 "Injection 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-4-N ↔ KV8-C-9 | OEM-4-N "Intake air temperature (IAT)" [temp_in] is wired to KV8-C-9 "Analog in 8" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-4-P ↔ KV8-C-4 | OEM-4-P "Coolant temperature (ECT)" [temp_in] is wired to KV8-C-4 "Analog in 3" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-4-R ↔ KV8-C-8 | OEM-4-R "Intake air temperature 2 (IAT2, turbo)" [temp_in] is wired to KV8-C-8 "Analog in 7" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | UNMAPPED | OEM | 13 optional OEM pins are not mapped: OEM-2-N VTCS solenoid (intake butterflies); OEM-2-R Malfunction indicator lamp (MIL); OEM-3-C Purge solenoid valve; OEM-3-D EGR boost solenoid; OEM-3-K EVAP leak detection pump; OEM-3-M Alternator control; OEM-3-O Tachometer output; OEM-3-Q Data link connector (K-line); OEM-3-U Charge lamp; OEM-4-AC Data link connector (DLC TEN, turbo); OEM-4-AH EVAP leak detection pump solenoid valve; OEM-4-T Generator output voltage (terminal P); OEM-4-Z TCM (automatic only) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-4-AG | 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 2026-10-17. Review every wire against both manuals before building. Not wired: - OEM-4 AG: Constant +12V: Emtron KV8 has no battery-constant input; not needed - KV8-D 12: Knock 1 − left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors - OEM-2 N: VTCS solenoid (intake butterflies): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron KV8 - OEM-2 R: Malfunction indicator lamp (MIL): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron KV8 - OEM-3 C: Purge solenoid valve: no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron KV8 - OEM-3 K: EVAP leak detection pump: no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron KV8 - OEM-3 M: Alternator control: no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron KV8 - OEM-3 U: Charge lamp: no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron KV8 - OEM-4 AH: EVAP leak detection pump solenoid valve: no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron KV8 - OEM-3 O: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on Emtron KV8 - OEM-3 Q: Data link connector (K-line): no free k_line on Emtron KV8 - OEM-4 AC: Data link connector (DLC TEN, turbo): no free k_line on Emtron KV8 - OEM-3 D: EGR boost solenoid: not classified in the library; wire by hand - OEM-4 T: Generator output voltage (terminal P): not classified in the library; wire by hand - OEM-4 Z: TCM (automatic only): not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | oem_manual | 2005 Mazda MX-5 Miata Engine Performance Control System (PCM terminal voltage reference, BP and BP WITH TC) | https://trull.org/alex/pubmirror/www.mellens.net/mazda/Mazda-Miata-2005/engine_control_system.pdf | — | — | — |
| 4 | vendor_doc | Adaptronic eSel039 Select Plugin ECU for Mazda MX5 / Miata NB8B/C (OEM ECU pinout) | https://www.miataturbo.net/attachments/ecus-tuning-54/04-msm-ecu-pinout-104032/nb8bc_oem_ecu_pinouts-224948d1602912806 | — | — | — |
| 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 | 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 | Link G4X MX5NB2X install manual (NB2 2001-05) | https://linkecu.com/documentation/MX5XNB2.pdf | archive | 2026-10-05 | 741efdd9f2c8 |
| 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 |
| 2 | user_dataset | Subaru ECU Matcher dataset (hiubin), vehicleId=1 | — | — | — | — |