AP1 2000–03 (F20C) → Motorsport Electronics ME442 (auto)
AP1 2000–03 (F20C) — Motorsport Electronics — ME442
Drawn by Michael Gnankou · Rev 0 · proposal · 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 | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 66 wires · 8 connectors · 4 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-B-1 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-B-9 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | ME442-C1-15 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | ME442-C1-64 | 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 | ME442-C1-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | ME442-C1-61 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | ME442-C1-89 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | ME442-C1-90 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-C-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-C-30 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-C-31 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-C-7 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | ME442-C1-52 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | ME442-C1-84 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-C-19 | ME442-C1-45 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-C-28 | ME442-C1-46 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-C-8 | ME442-C1-81 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-C-9 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-C-20 | ME442-C1-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-C-21 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-C-29 | ME442-C1-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-C-4 | ME442-C1-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-C-12 | ME442-C1-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-C-13 | ME442-C1-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-C-14 | ME442-C1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-B-11 | ME442-C1-63 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-B-3 | ME442-C1-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-B-4 | ME442-C1-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-B-5 | ME442-C1-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-15 | ME442-C1-73 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-16 | ME442-C1-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-17 | ME442-C1-74 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-A-20 | ME442-C1-44 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-A-28 | ME442-C1-69 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-B-12 | ME442-C1-65 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-C-1 | ME442-C1-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-C-11 | ME442-C1-39 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-B-23 | ME442-C1-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-1 | ME442-C1-58 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-12 | ME442-C1-88 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-18 | ME442-C1-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A-2 | ME442-C1-67 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A-3 | ME442-C1-68 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-A-4 | ME442-C1-70 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-A-6 | ME442-C1-71 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-C-2 | ME442-C1-66 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-A-19 | ME442-C1-79 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-C-17 | ME442-C1-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-C-27 | ME442-C1-56 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-A-23 | ME442-C1-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-C-15 | ME442-C1-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-C-16 | ME442-C1-87 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-C-26 | ME442-C1-86 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-C-25 | ME442-C1-57 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-A-29 | ME442-C1-78 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-A-30 | ME442-C1-48 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-A-9 | ME442-C1-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-C-5 | ME442-C1-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-A-24 | ME442-C1-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-A-26 | ME442-C1-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-A-27 | ME442-C1-62 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-A-32 | ME442-C1-34 | 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 | ME442-C1-15 | ME442-C1-10 | open (OL) | +12 V supply must not touch power ground | |
| 2 | ME442-C1-15 | ME442-C1-52 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | ME442-C1-10 | ME442-C1-45 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | ME442-C1-10 | ME442-C1-46 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | ME442-C1-15 | ME442-C1-45 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 6 | ME442-C1-15 | ME442-C1-46 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 7 | ME442-C1-52 | ME442-C1-45 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 8 | ME442-C1-52 | ME442-C1-46 | open (OL) | sensor ground 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
ME442-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | COIL 4 | — | W29 | — | 0.5 | OEM-C-14 | — | — | — |
| 10 | GROUND CHASSIS | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | EGT 1 | — | — | — | — | — | — | — | — |
| 12 | LOW SIDE 2 | — | W35 | — | 0.5 | OEM-A-16 | — | — | — |
| 13 | LOW SIDE RELAY 15 | — | — | — | — | — | — | — | — |
| 14 | LSU +12V | — | — | — | — | — | — | — | — |
| 15 | IGN +12V | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 16 | LSU HEATER -VE | — | W40 | — | 0.5 | OEM-C-1 | — | — | — |
| 17 | ANA VOLT 3 | — | W54 | — | 0.5 | OEM-A-23 | — | — | — |
| 18 | ANA VOLT 4 | — | W55 | — | 0.5 | OEM-C-15 | — | — | — |
| 19 | LSU UN | — | — | — | — | — | — | — | — |
| 2 | COIL 3 | — | W28 | — | 0.5 | OEM-C-13 | — | — | — |
| 20 | LSU VM | — | — | — | — | — | — | — | — |
| 21 | CAN 1 HIGH | — | — | — | — | — | — | — | — |
| 22 | CAM A VR+ | — | W23 | — | 0.5 | OEM-C-20 | — | — | — |
| 23 | CAM A VR- | — | W25 | — | 0.5 | OEM-C-29 | — | — | — |
| 24 | SERIAL 1 GROUND | — | — | — | — | — | — | — | — |
| 25 | SERIAL 1 TX | — | — | — | — | — | — | — | — |
| 26 | ANA VOLT 1 | — | W52 | — | 0.5 | OEM-C-17 | — | — | — |
| 27 | INJECTOR 8 | — | W45 | — | 0.5 | OEM-A-18 | — | — | — |
| 28 | INJECTOR 5 | — | W42 | — | 0.5 | OEM-B-23 | — | — | — |
| 29 | COIL 7 | — | — | — | — | — | — | — | — |
| 3 | INJECTOR 4 | — | W33 | — | 0.5 | OEM-B-5 | — | — | — |
| 30 | COIL 8 | — | — | — | — | — | — | — | — |
| 31 | COIL 2 | — | W27 | — | 0.5 | OEM-C-12 | — | — | — |
| 32 | COIL 1 | — | W26 | — | 0.5 | OEM-C-4 | — | — | — |
| 33 | INJECTOR 3 | — | W32 | — | 0.5 | OEM-B-4 | — | — | — |
| 34 | DIG_IN 6 | — | W66 | — | 0.5 | OEM-A-32 | — | — | — |
| 35 | USB D+ | — | — | — | — | — | — | — | — |
| 36 | USB D- | — | — | — | — | — | — | — | — |
| 37 | LOW SIDE RELAY 11 | — | — | — | — | — | — | — | — |
| 38 | USB VBUS | — | — | — | — | — | — | — | — |
| 39 | LOW SIDE 6 | — | W41 | — | 0.5 | OEM-C-11 | — | — | — |
| 4 | INJECTOR 2 | — | W31 | — | 0.5 | OEM-B-3 | — | — | — |
| 40 | LOW SIDE RELAY 17 | — | — | — | — | — | — | — | — |
| 41 | USB GROUND | — | — | — | — | — | — | — | — |
| 42 | LOW SIDE RELAY 12 | — | — | — | — | — | — | — | — |
| 43 | LOW SIDE RELAY 14 | — | — | — | — | — | — | — | — |
| 44 | LOW SIDE 4 | — | W37 | — | 0.5 | OEM-A-20 | — | — | — |
| 45 | 5V REF | — | W19 | — | 0.5 | OEM-C-19 | — | — | — |
| 46 | 5V REF | — | W20 | — | 0.5 | OEM-C-28 | — | — | — |
| 47 | ANA TEMP 4 | — | — | — | — | — | — | — | — |
| 48 | ANA VOLT 7 | — | W60 | — | 0.5 | OEM-A-30 | — | — | — |
| 49 | LSU IA | — | — | — | — | — | — | — | — |
| 5 | DIG_IN 4 | — | W64 | — | 0.5 | OEM-A-26 | — | — | — |
| 50 | LSU IP | — | — | — | — | — | — | — | — |
| 51 | CAN 1 LOW | — | — | — | — | — | — | — | — |
| 52 | SENSORS GROUND | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 53 | KNOCK 1 SIGNAL | — | — | — | — | — | — | — | — |
| 54 | KNOCK 2 SIGNAL | — | — | — | — | — | — | — | — |
| 55 | SERIAL 1 RX | — | — | — | — | — | — | — | — |
| 56 | ANA VOLT 2 | — | W53 | — | 0.5 | OEM-C-27 | — | — | — |
| 57 | ANA TEMP 2 | — | W58 | — | 0.5 | OEM-C-25 | — | — | — |
| 58 | INJECTOR 6 | — | W43 | — | 0.5 | OEM-A-1 | — | — | — |
| 59 | COIL 5 | — | — | — | — | — | — | — | — |
| 6 | DIG_IN 1 | — | W61 | — | 0.5 | OEM-A-9 | — | — | — |
| 60 | COIL 6 | — | — | — | — | — | — | — | — |
| 61 | GROUND | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 62 | DIG_IN 5 | — | W65 | — | 0.5 | OEM-A-27 | — | — | — |
| 63 | INJECTOR 1 | — | W30 | — | 0.5 | OEM-B-11 | — | — | — |
| 64 | VBAT | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 65 | H-BRIDGE A OUT 1 | — | W39 | — | 0.5 | OEM-B-12 | — | — | — |
| 66 | H-BRIDGE A OUT 2 | — | W50 | — | 0.5 | OEM-C-2 | — | — | — |
| 67 | Stepper 1 / A1 | — | W46 | — | 0.5 | OEM-A-2 | — | — | — |
| 68 | Stepper 2 / A2 | — | W47 | — | 0.5 | OEM-A-3 | — | — | — |
| 69 | LOW SIDE 5 | — | W38 | — | 0.5 | OEM-A-28 | — | — | — |
| 7 | DIG_IN 2 | — | W62 | — | 0.5 | OEM-C-5 | — | — | — |
| 70 | Stepper 3 / B1 | — | W48 | — | 0.5 | OEM-A-4 | — | — | — |
| 71 | Stepper 4 / B2 | — | W49 | — | 0.5 | OEM-A-6 | — | — | — |
| 72 | LOW SIDE RELAY 13 | — | — | — | — | — | — | — | — |
| 73 | LOW SIDE 1 | — | W34 | — | 0.5 | OEM-A-15 | — | — | — |
| 74 | LOW SIDE 3 | — | W36 | — | 0.5 | OEM-A-17 | — | — | — |
| 75 | LOW SIDE RELAY 16 | — | — | — | — | — | — | — | — |
| 76 | 5V REF | — | — | — | — | — | — | — | — |
| 77 | ANA TEMP 3 | — | — | — | — | — | — | — | — |
| 78 | ANA VOLT 6 | — | W59 | — | 0.5 | OEM-A-29 | — | — | — |
| 79 | TACHOMETER | — | W51 | — | 0.5 | OEM-A-19 | — | — | — |
| 8 | DIG_IN 3 | — | W63 | — | 0.5 | OEM-A-24 | — | — | — |
| 80 | CRANK VR- | — | — | — | — | — | — | — | — |
| 81 | CRANK VR+ | — | W21 | — | 0.5 | OEM-C-8 | — | — | — |
| 82 | CAM B VR- | — | — | — | — | — | — | — | — |
| 83 | CAM B VR+ | — | — | — | — | — | — | — | — |
| 84 | Sensor Ground | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 86 | ANA TEMP 1 | — | W57 | — | 0.5 | OEM-C-26 | — | — | — |
| 87 | ANA VOLT 5 | — | W56 | — | 0.5 | OEM-C-16 | — | — | — |
| 88 | INJECTOR 7 | — | W44 | — | 0.5 | OEM-A-12 | — | — | — |
| 89 | GROUND | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 9 | LOW SIDE RELAY 18 | — | — | — | — | — | — | — | — |
| 90 | GROUND | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Coolant temp gauge drive | — | W43 | — | 0.5 | ME442-C1-58 | — | — | — |
| 2 | Air control valve solenoid | — | W46 | — | 0.5 | ME442-C1-67 | — | — | — |
| 3 | Evap bypass solenoid | — | W47 | — | 0.5 | ME442-C1-68 | — | — | — |
| 4 | Evap canister vent shut valve | — | W48 | — | 0.5 | ME442-C1-70 | — | — | — |
| 5 | NC | — | — | — | — | — | — | — | — |
| 6 | Evap canister purge valve | — | W49 | — | 0.5 | ME442-C1-71 | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Vehicle speed sensor | — | W61 | — | 0.5 | ME442-C1-6 | — | — | — |
| 10 | Service check signal | — | — | — | — | — | — | — | — |
| 11 | NC | — | — | — | — | — | — | — | — |
| 12 | Immobilizer indicator light | — | W44 | — | 0.5 | ME442-C1-88 | — | — | — |
| 13 | Immobilizer enable signal | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | Fuel pump relay (USDM) | — | W34 | — | 0.5 | ME442-C1-73 | — | — | — |
| 16 | Fuel pump relay (JDM) | — | W35 | — | 0.5 | ME442-C1-12 | — | — | — |
| 17 | A/C clutch relay | — | W36 | — | 0.5 | ME442-C1-74 | — | — | — |
| 18 | Check engine light (MIL) | — | W45 | — | 0.5 | ME442-C1-27 | — | — | — |
| 19 | Tacho output | — | W51 | — | 0.5 | ME442-C1-79 | — | — | — |
| 20 | Radiator fan relay | — | W37 | — | 0.5 | ME442-C1-44 | — | — | — |
| 21 | K-Line | — | — | — | — | — | — | — | — |
| 22 | NC | — | — | — | — | — | — | — | — |
| 23 | Secondary O2 sensor | — | W54 | — | 0.5 | ME442-C1-17 | — | — | — |
| 24 | Starter switch signal | — | W63 | — | 0.5 | ME442-C1-8 | — | — | — |
| 25 | Immobilizer code | — | — | — | — | — | — | — | — |
| 26 | Power steering load detect | — | W64 | — | 0.5 | ME442-C1-5 | — | — | — |
| 27 | A/C switch (request) | — | W65 | — | 0.5 | ME442-C1-62 | — | — | — |
| 28 | Air pump relay | — | W38 | — | 0.5 | ME442-C1-69 | — | — | — |
| 29 | Fuel tank pressure sensor | — | W59 | — | 0.5 | ME442-C1-78 | — | — | — |
| 30 | Electrical load detector | — | W60 | — | 0.5 | ME442-C1-48 | — | — | — |
| 31 | NC | — | — | — | — | — | — | — | — |
| 32 | Brake switch | — | W66 | — | 0.5 | ME442-C1-34 | — | — | — |
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 | — | W31 | — | 0.5 | ME442-C1-4 | — | — | — |
| 4 | Injector 3 | — | W32 | — | 0.5 | ME442-C1-33 | — | — | — |
| 5 | Injector 4 | — | W33 | — | 0.5 | ME442-C1-3 | — | — | — |
| 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 | — | W30 | — | 0.5 | ME442-C1-63 | — | — | — |
| 12 | VTEC solenoid | — | W39 | — | 0.5 | ME442-C1-65 | — | — | — |
| 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) | — | — | — | — | — | — | — | — |
| 22 | Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 23 | Idle air control valve | — | W42 | — | 0.5 | ME442-C1-28 | — | — | — |
| 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 | — | W40 | — | 0.5 | ME442-C1-16 | — | — | — |
| 2 | Alternator control | — | W50 | — | 0.5 | ME442-C1-66 | — | — | — |
| 3 | Knock sensor | — | — | — | — | — | — | — | — |
| 4 | Ignition coil 1 | — | W26 | — | 0.5 | ME442-C1-32 | — | — | — |
| 5 | Alternator FR signal | — | W62 | — | 0.5 | ME442-C1-7 | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | Sensor ground 1 | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Crank sensor + (CKP+) | — | W21 | — | 0.5 | ME442-C1-81 | — | — | — |
| 9 | Crank sensor − (CKP−) | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 10 | VTEC pressure switch | — | — | — | — | — | — | — | — |
| 11 | Secondary O2 heater control | — | W41 | — | 0.5 | ME442-C1-39 | — | — | — |
| 12 | Ignition coil 2 | — | W27 | — | 0.5 | ME442-C1-31 | — | — | — |
| 13 | Ignition coil 3 | — | W28 | — | 0.5 | ME442-C1-2 | — | — | — |
| 14 | Ignition coil 4 | — | W29 | — | 0.5 | ME442-C1-1 | — | — | — |
| 15 | Secondary O2 sensor | — | W55 | — | 0.5 | ME442-C1-18 | — | — | — |
| 16 | Primary O2 sensor | — | W56 | — | 0.5 | ME442-C1-87 | — | — | — |
| 17 | MAP sensor | — | W52 | — | 0.5 | ME442-C1-26 | — | — | — |
| 18 | Sensor ground 2 | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor 5V supply 1 (MAP) | — | W19 | — | 0.5 | ME442-C1-45 | — | — | — |
| 20 | Cam (TDC1) sensor + | — | W23 | — | 0.5 | ME442-C1-22 | — | — | — |
| 21 | Cam (TDC1) sensor − | — | W24 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Knock sensor | — | — | — | — | — | — | — | — |
| 23 | NC | — | — | — | — | — | — | — | — |
| 24 | Air pump electric current sensor | — | — | — | — | — | — | — | — |
| 25 | Intake air temp sensor | — | W58 | — | 0.5 | ME442-C1-57 | — | — | — |
| 26 | Coolant temp sensor | — | W57 | — | 0.5 | ME442-C1-86 | — | — | — |
| 27 | Throttle position sensor | — | W53 | — | 0.5 | ME442-C1-56 | — | — | — |
| 28 | Sensor 5V supply 2 | — | W20 | — | 0.5 | ME442-C1-46 | — | — | — |
| 29 | Cam (TDC2) sensor + | — | W25 | — | 0.5 | ME442-C1-23 | — | — | — |
| 30 | Cam (TDC2) sensor − | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 31 | Timing ground | — | W15 | — | 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 | — | — | W24 | — | 0.5 | OEM-C-21 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | OEM-C-9 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-C-18 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-C-30 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-C-31 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-C-7 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | ME442-C1-52 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | ME442-C1-84 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-B-1 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-B-9 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | ME442-C1-15 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | ME442-C1-64 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-B-10 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-B-2 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-B-20 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-B-22 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | ME442-C1-10 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | ME442-C1-61 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | ME442-C1-89 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | ME442-C1-90 | — | — | — |
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 | ME442-C1-58 | INJECTOR 6 | injector_out | corroborated | |
| OEM-A-10 | Service check signal | — | — | — | — | single_source | |
| OEM-A-11 | NC | — | — | — | — | unverified | |
| OEM-A-12 | Immobilizer indicator light | low_side_out | ME442-C1-88 | INJECTOR 7 | injector_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 | ME442-C1-73 | LOW SIDE 1 | low_side_out | corroborated | |
| OEM-A-16 | Fuel pump relay (JDM) | low_side_out | ME442-C1-12 | LOW SIDE 2 | low_side_out | single_source | |
| OEM-A-17 | A/C clutch relay | low_side_out | ME442-C1-74 | LOW SIDE 3 | low_side_out | corroborated | |
| OEM-A-18 | Check engine light (MIL) | low_side_out | ME442-C1-27 | INJECTOR 8 | injector_out | corroborated | |
| OEM-A-19 | Tacho output | tacho_out | ME442-C1-79 | TACHOMETER | tacho_out | corroborated | |
| OEM-A-2 | Air control valve solenoid | low_side_out | ME442-C1-67 | Stepper 1 / A1 | hbridge_out | single_source | |
| OEM-A-20 | Radiator fan relay | low_side_out | ME442-C1-44 | LOW SIDE 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 | ME442-C1-17 | ANA VOLT 3 | analog_in | single_source | |
| OEM-A-24 | Starter switch signal | digital_in | ME442-C1-8 | DIG_IN 3 | digital_in | corroborated | |
| OEM-A-25 | Immobilizer code | — | — | — | — | single_source | |
| OEM-A-26 | Power steering load detect | digital_in | ME442-C1-5 | DIG_IN 4 | digital_in | corroborated | |
| OEM-A-27 | A/C switch (request) | digital_in | ME442-C1-62 | DIG_IN 5 | digital_in | corroborated | |
| OEM-A-28 | Air pump relay | low_side_out | ME442-C1-69 | LOW SIDE 5 | low_side_out | corroborated | |
| OEM-A-29 | Fuel tank pressure sensor | analog_in | ME442-C1-78 | ANA VOLT 6 | analog_in | corroborated | |
| OEM-A-3 | Evap bypass solenoid | low_side_out | ME442-C1-68 | Stepper 2 / A2 | hbridge_out | single_source | |
| OEM-A-30 | Electrical load detector | analog_in | ME442-C1-48 | ANA VOLT 7 | analog_in | corroborated | |
| OEM-A-31 | NC | — | — | — | — | unverified | |
| OEM-A-32 | Brake switch | digital_in | ME442-C1-34 | DIG_IN 6 | digital_in | corroborated | |
| OEM-A-4 | Evap canister vent shut valve | low_side_out | ME442-C1-70 | Stepper 3 / B1 | hbridge_out | single_source | |
| OEM-A-5 | NC | — | — | — | — | unverified | |
| OEM-A-6 | Evap canister purge valve | low_side_out | ME442-C1-71 | Stepper 4 / B2 | hbridge_out | single_source | |
| OEM-A-7 | NC | — | — | — | — | unverified | |
| OEM-A-8 | NC | — | — | — | — | unverified | |
| OEM-A-9 | Vehicle speed sensor | digital_in | ME442-C1-6 | DIG_IN 1 | digital_in | corroborated | |
| OEM-B-1 | Power source 1 (main relay) | power_in | ME442-C1-15 + ME442-C1-64 | IGN +12V + VBAT | power_in | corroborated | |
| OEM-B-10 | Power ground 2 | ground | ME442-C1-10 + ME442-C1-61 + ME442-C1-89 + ME442-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | single_source | |
| OEM-B-11 | Injector 1 | injector_out | ME442-C1-63 | INJECTOR 1 | injector_out | corroborated | |
| OEM-B-12 | VTEC solenoid | high_side_out | ME442-C1-65 | H-BRIDGE A OUT 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 | ME442-C1-10 + ME442-C1-61 + ME442-C1-89 + ME442-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | corroborated | |
| OEM-B-20 | Ground | ground | ME442-C1-10 + ME442-C1-61 + ME442-C1-89 + ME442-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | single_source | |
| OEM-B-21 | Backup power (battery constant) | power_in | — | — | — | single_source | |
| OEM-B-22 | Ground | ground | ME442-C1-10 + ME442-C1-61 + ME442-C1-89 + ME442-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | single_source | |
| OEM-B-23 | Idle air control valve | low_side_out | ME442-C1-28 | INJECTOR 5 | injector_out | corroborated | |
| OEM-B-24 | NC | — | — | — | — | unverified | |
| OEM-B-25 | NC | — | — | — | — | unverified | |
| OEM-B-3 | Injector 2 | injector_out | ME442-C1-4 | INJECTOR 2 | injector_out | corroborated | |
| OEM-B-4 | Injector 3 | injector_out | ME442-C1-33 | INJECTOR 3 | injector_out | corroborated | |
| OEM-B-5 | Injector 4 | injector_out | ME442-C1-3 | 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 | ME442-C1-15 + ME442-C1-64 | IGN +12V + VBAT | power_in | corroborated | |
| OEM-C-1 | Primary O2 heater | low_side_out | ME442-C1-16 | LSU HEATER -VE | low_side_out | corroborated | |
| OEM-C-10 | VTEC pressure switch | digital_in | — | — | — | corroborated | |
| OEM-C-11 | Secondary O2 heater control | low_side_out | ME442-C1-39 | LOW SIDE 6 | low_side_out | single_source | |
| OEM-C-12 | Ignition coil 2 | ignition_out | ME442-C1-31 | COIL 2 | ignition_out | corroborated | |
| OEM-C-13 | Ignition coil 3 | ignition_out | ME442-C1-2 | COIL 3 | ignition_out | corroborated | |
| OEM-C-14 | Ignition coil 4 | ignition_out | ME442-C1-1 | COIL 4 | ignition_out | corroborated | |
| OEM-C-15 | Secondary O2 sensor | lambda_nb_in | ME442-C1-18 | ANA VOLT 4 | analog_in | corroborated | |
| OEM-C-16 | Primary O2 sensor | lambda_nb_in | ME442-C1-87 | ANA VOLT 5 | analog_in | corroborated | |
| OEM-C-17 | MAP sensor | analog_in | ME442-C1-26 | ANA VOLT 1 | analog_in | corroborated | |
| OEM-C-18 | Sensor ground 2 | sensor_ground | ME442-C1-52 + ME442-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-C-19 | Sensor 5V supply 1 (MAP) | vref | ME442-C1-45 | 5V REF | vref | corroborated | |
| OEM-C-2 | Alternator control | low_side_out | ME442-C1-66 | H-BRIDGE A OUT 2 | hbridge_out | single_source | |
| OEM-C-20 | Cam (TDC1) sensor + | trigger_in | ME442-C1-22 | CAM A VR+ | trigger_in | corroborated | |
| OEM-C-21 | Cam (TDC1) sensor − | trigger_in | ME442-C1-52 + ME442-C1-84 | SENSORS 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 | — | — | — | single_source | |
| OEM-C-25 | Intake air temp sensor | temp_in | ME442-C1-57 | ANA TEMP 2 | temp_in | corroborated | |
| OEM-C-26 | Coolant temp sensor | temp_in | ME442-C1-86 | ANA TEMP 1 | temp_in | corroborated | |
| OEM-C-27 | Throttle position sensor | analog_in | ME442-C1-56 | ANA VOLT 2 | analog_in | corroborated | |
| OEM-C-28 | Sensor 5V supply 2 | vref | ME442-C1-46 | 5V REF | vref | corroborated | |
| OEM-C-29 | Cam (TDC2) sensor + | trigger_in | ME442-C1-23 | CAM A VR- | trigger_in | corroborated | |
| OEM-C-3 | Knock sensor | knock_in | — | — | — | conflict | |
| OEM-C-30 | Cam (TDC2) sensor − | sensor_ground | ME442-C1-52 + ME442-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-C-31 | Timing ground | sensor_ground | ME442-C1-52 + ME442-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | single_source | |
| OEM-C-4 | Ignition coil 1 | ignition_out | ME442-C1-32 | COIL 1 | ignition_out | corroborated | |
| OEM-C-5 | Alternator FR signal | digital_in | ME442-C1-7 | DIG_IN 2 | digital_in | single_source | |
| OEM-C-6 | NC | — | — | — | — | unverified | |
| OEM-C-7 | Sensor ground 1 | sensor_ground | ME442-C1-52 + ME442-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-C-8 | Crank sensor + (CKP+) | trigger_in | ME442-C1-81 | CRANK VR+ | trigger_in | corroborated | |
| OEM-C-9 | Crank sensor − (CKP−) | trigger_in | ME442-C1-52 + ME442-C1-84 | SENSORS 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 | ME442-C1-15 | 0.85 | no route | IGN +12V | — | |
| W4 | SP-14V-1 | ME442-C1-64 | 0.85 | no route | VBAT | — | |
| 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 | ME442-C1-10 | 0.85 | no route | GROUND CHASSIS | — | |
| W10 | SP-GND-1 | ME442-C1-61 | 0.85 | no route | GROUND | — | |
| W11 | SP-GND-1 | ME442-C1-89 | 0.85 | no route | GROUND | — | |
| W12 | SP-GND-1 | ME442-C1-90 | 0.85 | no route | GROUND | — | |
| W13 | OEM-C-18 | SP-0V-1 | 0.5 | no route | Sensor ground 2 | — | |
| W14 | OEM-C-30 | SP-0V-1 | 0.5 | no route | Cam (TDC2) sensor − | — | |
| W15 | OEM-C-31 | SP-0V-1 | 0.5 | no route | Timing ground | — | |
| W16 | OEM-C-7 | SP-0V-1 | 0.5 | no route | Sensor ground 1 | — | |
| W17 | SP-0V-1 | ME442-C1-52 | 0.5 | no route | SENSORS GROUND | — | |
| W18 | SP-0V-1 | ME442-C1-84 | 0.5 | no route | Sensor Ground | — | |
| W19 | OEM-C-19 | ME442-C1-45 | 0.5 | no route | Sensor 5V supply 1 (MAP) | — | |
| W20 | OEM-C-28 | ME442-C1-46 | 0.5 | no route | Sensor 5V supply 2 | — | |
| W21 | OEM-C-8 | ME442-C1-81 | 0.5 | no route | Crank sensor + (CKP+) | — | |
| W22 | OEM-C-9 | SP-0V-1 | 0.5 | no route | Crank sensor − (CKP−) | — | |
| W23 | OEM-C-20 | ME442-C1-22 | 0.5 | no route | Cam (TDC1) sensor + | — | |
| W24 | OEM-C-21 | SP-0V-1 | 0.5 | no route | Cam (TDC1) sensor − | — | |
| W25 | OEM-C-29 | ME442-C1-23 | 0.5 | no route | Cam (TDC2) sensor + | — | |
| W26 | OEM-C-4 | ME442-C1-32 | 0.5 | no route | Ignition coil 1 | — | |
| W27 | OEM-C-12 | ME442-C1-31 | 0.5 | no route | Ignition coil 2 | — | |
| W28 | OEM-C-13 | ME442-C1-2 | 0.5 | no route | Ignition coil 3 | — | |
| W29 | OEM-C-14 | ME442-C1-1 | 0.5 | no route | Ignition coil 4 | — | |
| W30 | OEM-B-11 | ME442-C1-63 | 0.5 | no route | Injector 1 | — | |
| W31 | OEM-B-3 | ME442-C1-4 | 0.5 | no route | Injector 2 | — | |
| W32 | OEM-B-4 | ME442-C1-33 | 0.5 | no route | Injector 3 | — | |
| W33 | OEM-B-5 | ME442-C1-3 | 0.5 | no route | Injector 4 | — | |
| W34 | OEM-A-15 | ME442-C1-73 | 0.5 | no route | Fuel pump relay (USDM) | — | |
| W35 | OEM-A-16 | ME442-C1-12 | 0.5 | no route | Fuel pump relay (JDM) | — | |
| W36 | OEM-A-17 | ME442-C1-74 | 0.5 | no route | A/C clutch relay | — | |
| W37 | OEM-A-20 | ME442-C1-44 | 0.5 | no route | Radiator fan relay | — | |
| W38 | OEM-A-28 | ME442-C1-69 | 0.5 | no route | Air pump relay | — | |
| W39 | OEM-B-12 | ME442-C1-65 | 0.5 | no route | VTEC solenoid | — | |
| W40 | OEM-C-1 | ME442-C1-16 | 0.5 | no route | Primary O2 heater | — | |
| W41 | OEM-C-11 | ME442-C1-39 | 0.5 | no route | Secondary O2 heater control | — | |
| W42 | OEM-B-23 | ME442-C1-28 | 0.5 | no route | Idle air control valve | — | |
| W43 | OEM-A-1 | ME442-C1-58 | 0.5 | no route | Coolant temp gauge drive | — | |
| W44 | OEM-A-12 | ME442-C1-88 | 0.5 | no route | Immobilizer indicator light | — | |
| W45 | OEM-A-18 | ME442-C1-27 | 0.5 | no route | Check engine light (MIL) | — | |
| W46 | OEM-A-2 | ME442-C1-67 | 0.5 | no route | Air control valve solenoid | — | |
| W47 | OEM-A-3 | ME442-C1-68 | 0.5 | no route | Evap bypass solenoid | — | |
| W48 | OEM-A-4 | ME442-C1-70 | 0.5 | no route | Evap canister vent shut valve | — | |
| W49 | OEM-A-6 | ME442-C1-71 | 0.5 | no route | Evap canister purge valve | — | |
| W50 | OEM-C-2 | ME442-C1-66 | 0.5 | no route | Alternator control | — | |
| W51 | OEM-A-19 | ME442-C1-79 | 0.5 | no route | Tacho output | — | |
| W52 | OEM-C-17 | ME442-C1-26 | 0.5 | no route | MAP sensor | — | |
| W53 | OEM-C-27 | ME442-C1-56 | 0.5 | no route | Throttle position sensor | — | |
| W54 | OEM-A-23 | ME442-C1-17 | 0.5 | no route | Secondary O2 sensor | — | |
| W55 | OEM-C-15 | ME442-C1-18 | 0.5 | no route | Secondary O2 sensor | — | |
| W56 | OEM-C-16 | ME442-C1-87 | 0.5 | no route | Primary O2 sensor | — | |
| W57 | OEM-C-26 | ME442-C1-86 | 0.5 | no route | Coolant temp sensor | — | |
| W58 | OEM-C-25 | ME442-C1-57 | 0.5 | no route | Intake air temp sensor | — | |
| W59 | OEM-A-29 | ME442-C1-78 | 0.5 | no route | Fuel tank pressure sensor | — | |
| W60 | OEM-A-30 | ME442-C1-48 | 0.5 | no route | Electrical load detector | — | |
| W61 | OEM-A-9 | ME442-C1-6 | 0.5 | no route | Vehicle speed sensor | — | |
| W62 | OEM-C-5 | ME442-C1-7 | 0.5 | no route | Alternator FR signal | — | |
| W63 | OEM-A-24 | ME442-C1-8 | 0.5 | no route | Starter switch signal | — | |
| W64 | OEM-A-26 | ME442-C1-5 | 0.5 | no route | Power steering load detect | — | |
| W65 | OEM-A-27 | ME442-C1-62 | 0.5 | no route | A/C switch (request) | — | |
| W66 | OEM-A-32 | ME442-C1-34 | 0.5 | no route | Brake 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 | S2K-0005-ECU-D | Honda | S2000 2000–05 ECU plug D (P/N unknown) | 1.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (13)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | LOAD_UNKNOWN | ME442-C1-65 | ME442-C1-65 "H-BRIDGE A OUT 1" drives OEM-B-12 VTEC solenoid (load 1.0 A) but its current rating is unknown. Check the ECU manual. |
| warn | NET_FAMILY | OEM-A-2 ↔ ME442-C1-67 | OEM-A-2 "Air control valve solenoid" [low_side_out] is wired to ME442-C1-67 "Stepper 1 / A1" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-A-3 ↔ ME442-C1-68 | OEM-A-3 "Evap bypass solenoid" [low_side_out] is wired to ME442-C1-68 "Stepper 2 / A2" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-A-4 ↔ ME442-C1-70 | OEM-A-4 "Evap canister vent shut valve" [low_side_out] is wired to ME442-C1-70 "Stepper 3 / B1" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-A-6 ↔ ME442-C1-71 | OEM-A-6 "Evap canister purge valve" [low_side_out] is wired to ME442-C1-71 "Stepper 4 / B2" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-B-12 ↔ ME442-C1-65 | OEM-B-12 "VTEC solenoid" [high_side_out] is wired to ME442-C1-65 "H-BRIDGE A OUT 1" [hbridge_out]. A half-bridge can act as a high-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-C-2 ↔ ME442-C1-66 | OEM-C-2 "Alternator control" [low_side_out] is wired to ME442-C1-66 "H-BRIDGE A OUT 2" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| info | NET_FAMILY | OEM-A-1 ↔ ME442-C1-58 | OEM-A-1 "Coolant temp gauge drive" [low_side_out] is wired to ME442-C1-58 "INJECTOR 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-12 ↔ ME442-C1-88 | OEM-A-12 "Immobilizer indicator light" [low_side_out] is wired to ME442-C1-88 "INJECTOR 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-18 ↔ ME442-C1-27 | OEM-A-18 "Check engine light (MIL)" [low_side_out] is wired to ME442-C1-27 "INJECTOR 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-B-23 ↔ ME442-C1-28 | OEM-B-23 "Idle air control valve" [low_side_out] is wired to ME442-C1-28 "INJECTOR 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-C-9 ↔ ME442-C1-84 | OEM-C-9 "Crank sensor − (CKP−)" [trigger_in] is wired to ME442-C1-84 "Sensor Ground" [sensor_ground]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 9 optional OEM pins are not mapped: OEM-A-10 Service check signal; OEM-A-13 Immobilizer enable signal; OEM-A-21 K-Line; OEM-A-25 Immobilizer code; OEM-B-21 Backup power (battery constant); OEM-C-10 VTEC pressure switch; OEM-C-22 Knock sensor; OEM-C-24 Air pump electric current 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. Not wired: - OEM-B 21: Backup power (battery constant): Motorsport Electronics ME442 has no battery-constant input; not needed - 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-C 24: Air pump electric current sensor: no free analog_0_5 on Motorsport Electronics ME442 - OEM-C 10: VTEC pressure switch: no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME442 - OEM-A 21: K-Line: no free k_line on Motorsport Electronics ME442 - 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 | 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 |
| 4 | vendor_doc | Motorsport Electronics GEN2 ME221/ME360/ME442 wire-in pinout | https://motorsport-electronics.co.uk/onlinehelp/html/ME442ME360ME221GEN2Wire-InPinout.html | — | — | — |
| 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) | — | — | — | — |