AP1 2000–03 (F20C) → MaxxECU MaxxECU SPORT REV9+ (auto)
AP1 2000–03 (F20C) — MaxxECU — MaxxECU SPORT
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-08
Before you start
| Status | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 51 wires · 9 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 | MAXXECUSPORT-C1-M4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-B-10 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-B-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-B-20 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-B-22 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | MAXXECUSPORT-C1-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-C-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-C-30 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-C-31 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-C-7 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-0V-1 | MAXXECUSPORT-C1-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | MAXXECUSPORT-C1-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-C-19 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-C-28 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-5V1-1 | MAXXECUSPORT-C1-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-C-8 | MAXXECUSPORT-C1-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-C-9 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-C-20 | MAXXECUSPORT-C1-H4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-C-21 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-C-4 | MAXXECUSPORT-C1-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-C-12 | MAXXECUSPORT-C1-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-C-13 | MAXXECUSPORT-C1-B2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-C-14 | MAXXECUSPORT-C1-B3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-B-11 | MAXXECUSPORT-C1-K1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-B-3 | MAXXECUSPORT-C1-K2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B-4 | MAXXECUSPORT-C1-M1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-5 | MAXXECUSPORT-C1-M2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-15 | MAXXECUSPORT-C1-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-16 | MAXXECUSPORT-C1-C4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-17 | MAXXECUSPORT-C1-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-20 | MAXXECUSPORT-C1-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-28 | MAXXECUSPORT-C1-B1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B-12 | MAXXECUSPORT-C1-L1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-C-1 | MAXXECUSPORT-C1-D1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-C-11 | MAXXECUSPORT-C1-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-B-23 | MAXXECUSPORT-C1-M3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-1 | MAXXECUSPORT-C1-L3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-12 | MAXXECUSPORT-C1-L2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-C-17 | MAXXECUSPORT-C1-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-C-27 | MAXXECUSPORT-C1-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-23 | MAXXECUSPORT-C1-J4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-C-15 | MAXXECUSPORT-C1-C1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-C-16 | MAXXECUSPORT-C1-D2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-C-26 | MAXXECUSPORT-C1-J1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-C-25 | MAXXECUSPORT-C1-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-A-29 | MAXXECUSPORT-C1-D3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-A-30 | MAXXECUSPORT-C1-E4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-A-9 | MAXXECUSPORT-C1-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-C-5 | MAXXECUSPORT-C1-K4 | 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 | MAXXECUSPORT-C1-M4 | MAXXECUSPORT-C1-H1 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | MAXXECUSPORT-C1-M4 | MAXXECUSPORT-C1-L4 | open (OL) | +12 V supply must not touch power ground | |
| 3 | MAXXECUSPORT-C1-H1 | MAXXECUSPORT-C1-G1 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 4 | MAXXECUSPORT-C1-L4 | MAXXECUSPORT-C1-G1 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | MAXXECUSPORT-C1-M4 | MAXXECUSPORT-C1-G1 | open (OL) | +12 V supply must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MAXXECUSPORT-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | GPO 4 | — | W33 | — | 0.5 | OEM-A-20 | — | — | — |
| A2 | IGN 1 | — | W22 | — | 0.5 | OEM-C-4 | — | — | — |
| A3 | IGN 2 | — | W23 | — | 0.5 | OEM-C-12 | — | — | — |
| A4 | GPO 8/TACHO | — | W37 | — | 0.5 | OEM-C-11 | — | — | — |
| B1 | GPO 5 | — | W34 | — | 0.5 | OEM-A-28 | — | — | — |
| B2 | IGN 3 | — | W24 | — | 0.5 | OEM-C-13 | — | — | — |
| B3 | IGN 4 | — | W25 | — | 0.5 | OEM-C-14 | — | — | — |
| B4 | GPO 1 | — | W30 | — | 0.5 | OEM-A-15 | — | — | — |
| C1 | AIN 5 (0-5V) | — | W44 | — | 0.5 | OEM-C-15 | — | — | — |
| C2 | IGN 5 | — | — | — | — | — | — | — | — |
| C3 | IGN 6 | — | — | — | — | — | — | — | — |
| C4 | GPO 2 | — | W31 | — | 0.5 | OEM-A-16 | — | — | — |
| D1 | WBO2 Heater- | — | W36 | — | 0.5 | OEM-C-1 | — | — | — |
| D2 | AIN 6 (0-5V) | — | W45 | — | 0.5 | OEM-C-16 | — | — | — |
| D3 | AIN 7 (0-5V) | — | W48 | — | 0.5 | OEM-A-29 | — | — | — |
| D4 | GPO 3 | — | W32 | — | 0.5 | OEM-A-17 | — | — | — |
| E1 | CAN H | — | — | — | — | — | — | — | — |
| E2 | CAN L | — | — | — | — | — | — | — | — |
| E3 | GND Shield | — | — | — | — | — | — | — | — |
| E4 | AIN 8 (0-5V) | — | W49 | — | 0.5 | OEM-A-30 | — | — | — |
| F1 | CLT | — | — | — | — | — | — | — | — |
| F2 | IAT | — | — | — | — | — | — | — | — |
| F3 | WBO2 VREF | — | — | — | — | — | — | — | — |
| F4 | WBO2 VS | — | — | — | — | — | — | — | — |
| G1 | +5V sensor supply | — | W17 | — | 0.5 | SP-5V1-1 | — | — | — |
| G2 | TPS/AIN | — | W42 | — | 0.5 | OEM-C-27 | — | — | — |
| G3 | WBO2 IP | — | — | — | — | — | — | — | — |
| G4 | WBO2 RCAL | — | — | — | — | — | — | — | — |
| H1 | Sensor GND | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| H2 | Trigger GND | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| H3 | TRIGGER | — | W18 | — | 0.5 | OEM-C-8 | — | — | — |
| H4 | HOME | — | W20 | — | 0.5 | OEM-C-20 | — | — | — |
| J1 | AIN 1 (temperature) | — | W46 | — | 0.5 | OEM-C-26 | — | — | — |
| J2 | AIN 2 (Temperature) | — | W47 | — | 0.5 | OEM-C-25 | — | — | — |
| J3 | AIN 3 (0-5V) | — | W41 | — | 0.5 | OEM-C-17 | — | — | — |
| J4 | AIN 4 (0-5V) | — | W43 | — | 0.5 | OEM-A-23 | — | — | — |
| K1 | INJ 1 | — | W26 | — | 0.5 | OEM-B-11 | — | — | — |
| K2 | INJ 2 | — | W27 | — | 0.5 | OEM-B-3 | — | — | — |
| K3 | DIN 1 | — | W50 | — | 0.5 | OEM-A-9 | — | — | — |
| K4 | DIN 2 | — | W51 | — | 0.5 | OEM-C-5 | — | — | — |
| L1 | GPO 11/Motor 1- | — | W35 | — | 0.5 | OEM-B-12 | — | — | — |
| L2 | GPO 12/MOTOR 1+ | — | W40 | — | 0.5 | OEM-A-12 | — | — | — |
| L3 | INJ 6 | — | W39 | — | 0.5 | OEM-A-1 | — | — | — |
| L4 | Engine GND | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJ 3 | — | W28 | — | 0.5 | OEM-B-4 | — | — | — |
| M2 | INJ 4 | — | W29 | — | 0.5 | OEM-B-5 | — | — | — |
| M3 | INJ 5 | — | W38 | — | 0.5 | OEM-B-23 | — | — | — |
| M4 | +12V ECU power supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Coolant temp gauge drive | — | W39 | — | 0.5 | MAXXECUSPORT-C1-L3 | — | — | — |
| 2 | Air control valve solenoid | — | — | — | — | — | — | — | — |
| 3 | Evap bypass solenoid | — | — | — | — | — | — | — | — |
| 4 | Evap canister vent shut valve | — | — | — | — | — | — | — | — |
| 5 | NC | — | — | — | — | — | — | — | — |
| 6 | Evap canister purge valve | — | — | — | — | — | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Vehicle speed sensor | — | W50 | — | 0.5 | MAXXECUSPORT-C1-K3 | — | — | — |
| 10 | Service check signal | — | — | — | — | — | — | — | — |
| 11 | NC | — | — | — | — | — | — | — | — |
| 12 | Immobilizer indicator light | — | W40 | — | 0.5 | MAXXECUSPORT-C1-L2 | — | — | — |
| 13 | Immobilizer enable signal | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | Fuel pump relay (USDM) | — | W30 | — | 0.5 | MAXXECUSPORT-C1-B4 | — | — | — |
| 16 | Fuel pump relay (JDM) | — | W31 | — | 0.5 | MAXXECUSPORT-C1-C4 | — | — | — |
| 17 | A/C clutch relay | — | W32 | — | 0.5 | MAXXECUSPORT-C1-D4 | — | — | — |
| 18 | Check engine light (MIL) | — | — | — | — | — | — | — | — |
| 19 | Tacho output | — | — | — | — | — | — | — | — |
| 20 | Radiator fan relay | — | W33 | — | 0.5 | MAXXECUSPORT-C1-A1 | — | — | — |
| 21 | K-Line | — | — | — | — | — | — | — | — |
| 22 | NC | — | — | — | — | — | — | — | — |
| 23 | Secondary O2 sensor | — | W43 | — | 0.5 | MAXXECUSPORT-C1-J4 | — | — | — |
| 24 | Starter switch signal | — | — | — | — | — | — | — | — |
| 25 | Immobilizer code | — | — | — | — | — | — | — | — |
| 26 | Power steering load detect | — | — | — | — | — | — | — | — |
| 27 | A/C switch (request) | — | — | — | — | — | — | — | — |
| 28 | Air pump relay | — | W34 | — | 0.5 | MAXXECUSPORT-C1-B1 | — | — | — |
| 29 | Fuel tank pressure sensor | — | W48 | — | 0.5 | MAXXECUSPORT-C1-D3 | — | — | — |
| 30 | Electrical load detector | — | W49 | — | 0.5 | MAXXECUSPORT-C1-E4 | — | — | — |
| 31 | NC | — | — | — | — | — | — | — | — |
| 32 | Brake switch | — | — | — | — | — | — | — | — |
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 | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 3 | Injector 2 | — | W27 | — | 0.5 | MAXXECUSPORT-C1-K2 | — | — | — |
| 4 | Injector 3 | — | W28 | — | 0.5 | MAXXECUSPORT-C1-M1 | — | — | — |
| 5 | Injector 4 | — | W29 | — | 0.5 | MAXXECUSPORT-C1-M2 | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Power source 2 (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 10 | Power ground 2 | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | Injector 1 | — | W26 | — | 0.5 | MAXXECUSPORT-C1-K1 | — | — | — |
| 12 | VTEC solenoid | — | W35 | — | 0.5 | MAXXECUSPORT-C1-L1 | — | — | — |
| 13 | NC | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | NC | — | — | — | — | — | — | — | — |
| 16 | NC | — | — | — | — | — | — | — | — |
| 17 | NC | — | — | — | — | — | — | — | — |
| 18 | NC | — | — | — | — | — | — | — | — |
| 19 | NC | — | — | — | — | — | — | — | — |
| 20 | Ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | Backup power (battery constant) | — | — | — | — | — | — | — | — |
| 22 | Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 23 | Idle air control valve | — | W38 | — | 0.5 | MAXXECUSPORT-C1-M3 | — | — | — |
| 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 | — | W36 | — | 0.5 | MAXXECUSPORT-C1-D1 | — | — | — |
| 2 | Alternator control | — | — | — | — | — | — | — | — |
| 3 | Knock sensor | — | — | — | — | — | — | — | — |
| 4 | Ignition coil 1 | — | W22 | — | 0.5 | MAXXECUSPORT-C1-A2 | — | — | — |
| 5 | Alternator FR signal | — | W51 | — | 0.5 | MAXXECUSPORT-C1-K4 | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | Sensor ground 1 | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Crank sensor + (CKP+) | — | W18 | — | 0.5 | MAXXECUSPORT-C1-H3 | — | — | — |
| 9 | Crank sensor − (CKP−) | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 10 | VTEC pressure switch | — | — | — | — | — | — | — | — |
| 11 | Secondary O2 heater control | — | W37 | — | 0.5 | MAXXECUSPORT-C1-A4 | — | — | — |
| 12 | Ignition coil 2 | — | W23 | — | 0.5 | MAXXECUSPORT-C1-A3 | — | — | — |
| 13 | Ignition coil 3 | — | W24 | — | 0.5 | MAXXECUSPORT-C1-B2 | — | — | — |
| 14 | Ignition coil 4 | — | W25 | — | 0.5 | MAXXECUSPORT-C1-B3 | — | — | — |
| 15 | Secondary O2 sensor | — | W44 | — | 0.5 | MAXXECUSPORT-C1-C1 | — | — | — |
| 16 | Primary O2 sensor | — | W45 | — | 0.5 | MAXXECUSPORT-C1-D2 | — | — | — |
| 17 | MAP sensor | — | W41 | — | 0.5 | MAXXECUSPORT-C1-J3 | — | — | — |
| 18 | Sensor ground 2 | — | W9 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor 5V supply 1 (MAP) | — | W15 | — | 0.5 | SP-5V1-1 | — | — | — |
| 20 | Cam (TDC1) sensor + | — | W20 | — | 0.5 | MAXXECUSPORT-C1-H4 | — | — | — |
| 21 | Cam (TDC1) sensor − | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Knock sensor | — | — | — | — | — | — | — | — |
| 23 | NC | — | — | — | — | — | — | — | — |
| 24 | Air pump electric current sensor | — | — | — | — | — | — | — | — |
| 25 | Intake air temp sensor | — | W47 | — | 0.5 | MAXXECUSPORT-C1-J2 | — | — | — |
| 26 | Coolant temp sensor | — | W46 | — | 0.5 | MAXXECUSPORT-C1-J1 | — | — | — |
| 27 | Throttle position sensor | — | W42 | — | 0.5 | MAXXECUSPORT-C1-G2 | — | — | — |
| 28 | Sensor 5V supply 2 | — | W16 | — | 0.5 | SP-5V1-1 | — | — | — |
| 29 | Cam (TDC2) sensor + | — | — | — | — | — | — | — | — |
| 30 | Cam (TDC2) sensor − | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 31 | Timing ground | — | W11 | — | 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 | — | — | W21 | — | 0.5 | OEM-C-21 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-C-9 | — | — | — |
| 1 | — | — | W9 | — | 0.5 | OEM-C-18 | — | — | — |
| 1 | — | — | W10 | — | 0.5 | OEM-C-30 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-C-31 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-C-7 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | MAXXECUSPORT-C1-H1 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | MAXXECUSPORT-C1-H2 | — | — | — |
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 | MAXXECUSPORT-C1-M4 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W15 | — | 0.5 | OEM-C-19 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-C-28 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MAXXECUSPORT-C1-G1 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-B-10 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-B-2 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-B-20 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-B-22 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | MAXXECUSPORT-C1-L4 | — | — | — |
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 | MAXXECUSPORT-C1-L3 | INJ 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 | MAXXECUSPORT-C1-L2 | GPO 12/MOTOR 1+ | hbridge_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 | MAXXECUSPORT-C1-B4 | GPO 1 | low_side_out | corroborated | |
| OEM-A-16 | Fuel pump relay (JDM) | low_side_out | MAXXECUSPORT-C1-C4 | GPO 2 | low_side_out | single_source | |
| OEM-A-17 | A/C clutch relay | low_side_out | MAXXECUSPORT-C1-D4 | GPO 3 | low_side_out | corroborated | |
| OEM-A-18 | Check engine light (MIL) | low_side_out | — | — | — | corroborated | |
| OEM-A-19 | Tacho output | tacho_out | — | — | — | corroborated | |
| OEM-A-2 | Air control valve solenoid | low_side_out | — | — | — | single_source | |
| OEM-A-20 | Radiator fan relay | low_side_out | MAXXECUSPORT-C1-A1 | GPO 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 | MAXXECUSPORT-C1-J4 | AIN 4 (0-5V) | analog_in | single_source | |
| OEM-A-24 | Starter switch signal | digital_in | — | — | — | corroborated | |
| OEM-A-25 | Immobilizer code | — | — | — | — | single_source | |
| OEM-A-26 | Power steering load detect | digital_in | — | — | — | corroborated | |
| OEM-A-27 | A/C switch (request) | digital_in | — | — | — | corroborated | |
| OEM-A-28 | Air pump relay | low_side_out | MAXXECUSPORT-C1-B1 | GPO 5 | low_side_out | corroborated | |
| OEM-A-29 | Fuel tank pressure sensor | analog_in | MAXXECUSPORT-C1-D3 | AIN 7 (0-5V) | analog_in | corroborated | |
| OEM-A-3 | Evap bypass solenoid | low_side_out | — | — | — | single_source | |
| OEM-A-30 | Electrical load detector | analog_in | MAXXECUSPORT-C1-E4 | AIN 8 (0-5V) | analog_in | corroborated | |
| OEM-A-31 | NC | — | — | — | — | unverified | |
| OEM-A-32 | Brake switch | digital_in | — | — | — | corroborated | |
| OEM-A-4 | Evap canister vent shut valve | low_side_out | — | — | — | single_source | |
| OEM-A-5 | NC | — | — | — | — | unverified | |
| OEM-A-6 | Evap canister purge valve | low_side_out | — | — | — | single_source | |
| OEM-A-7 | NC | — | — | — | — | unverified | |
| OEM-A-8 | NC | — | — | — | — | unverified | |
| OEM-A-9 | Vehicle speed sensor | digital_in | MAXXECUSPORT-C1-K3 | DIN 1 | digital_in | corroborated | |
| OEM-B-1 | Power source 1 (main relay) | power_in | MAXXECUSPORT-C1-M4 | +12V ECU power supply | power_in | corroborated | |
| OEM-B-10 | Power ground 2 | ground | MAXXECUSPORT-C1-L4 | Engine GND | ground | single_source | |
| OEM-B-11 | Injector 1 | injector_out | MAXXECUSPORT-C1-K1 | INJ 1 | injector_out | corroborated | |
| OEM-B-12 | VTEC solenoid | high_side_out | MAXXECUSPORT-C1-L1 | GPO 11/Motor 1- | hbridge_out | corroborated | |
| OEM-B-13 | NC | — | — | — | — | unverified | |
| OEM-B-14 | NC | — | — | — | — | unverified | |
| OEM-B-15 | NC | — | — | — | — | unverified | |
| OEM-B-16 | NC | — | — | — | — | unverified | |
| OEM-B-17 | NC | — | — | — | — | unverified | |
| OEM-B-18 | NC | — | — | — | — | unverified | |
| OEM-B-19 | NC | — | — | — | — | unverified | |
| OEM-B-2 | Power ground 1 | ground | MAXXECUSPORT-C1-L4 | Engine GND | ground | corroborated | |
| OEM-B-20 | Ground | ground | MAXXECUSPORT-C1-L4 | Engine GND | ground | single_source | |
| OEM-B-21 | Backup power (battery constant) | power_in | — | — | — | single_source | |
| OEM-B-22 | Ground | ground | MAXXECUSPORT-C1-L4 | Engine GND | ground | single_source | |
| OEM-B-23 | Idle air control valve | low_side_out | MAXXECUSPORT-C1-M3 | INJ 5 | injector_out | corroborated | |
| OEM-B-24 | NC | — | — | — | — | unverified | |
| OEM-B-25 | NC | — | — | — | — | unverified | |
| OEM-B-3 | Injector 2 | injector_out | MAXXECUSPORT-C1-K2 | INJ 2 | injector_out | corroborated | |
| OEM-B-4 | Injector 3 | injector_out | MAXXECUSPORT-C1-M1 | INJ 3 | injector_out | corroborated | |
| OEM-B-5 | Injector 4 | injector_out | MAXXECUSPORT-C1-M2 | INJ 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 | MAXXECUSPORT-C1-M4 | +12V ECU power supply | power_in | corroborated | |
| OEM-C-1 | Primary O2 heater | low_side_out | MAXXECUSPORT-C1-D1 | WBO2 Heater- | low_side_out | corroborated | |
| OEM-C-10 | VTEC pressure switch | digital_in | — | — | — | corroborated | |
| OEM-C-11 | Secondary O2 heater control | low_side_out | MAXXECUSPORT-C1-A4 | GPO 8/TACHO | low_side_out | single_source | |
| OEM-C-12 | Ignition coil 2 | ignition_out | MAXXECUSPORT-C1-A3 | IGN 2 | ignition_out | corroborated | |
| OEM-C-13 | Ignition coil 3 | ignition_out | MAXXECUSPORT-C1-B2 | IGN 3 | ignition_out | corroborated | |
| OEM-C-14 | Ignition coil 4 | ignition_out | MAXXECUSPORT-C1-B3 | IGN 4 | ignition_out | corroborated | |
| OEM-C-15 | Secondary O2 sensor | lambda_nb_in | MAXXECUSPORT-C1-C1 | AIN 5 (0-5V) | analog_in | corroborated | |
| OEM-C-16 | Primary O2 sensor | lambda_nb_in | MAXXECUSPORT-C1-D2 | AIN 6 (0-5V) | analog_in | corroborated | |
| OEM-C-17 | MAP sensor | analog_in | MAXXECUSPORT-C1-J3 | AIN 3 (0-5V) | analog_in | corroborated | |
| OEM-C-18 | Sensor ground 2 | sensor_ground | MAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2 | Sensor GND + Trigger GND | sensor_ground | corroborated | |
| OEM-C-19 | Sensor 5V supply 1 (MAP) | vref | MAXXECUSPORT-C1-G1 | +5V sensor supply | vref | corroborated | |
| OEM-C-2 | Alternator control | low_side_out | — | — | — | single_source | |
| OEM-C-20 | Cam (TDC1) sensor + | trigger_in | MAXXECUSPORT-C1-H4 | HOME | trigger_in | corroborated | |
| OEM-C-21 | Cam (TDC1) sensor − | trigger_in | MAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2 | Sensor GND + Trigger GND | 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 | MAXXECUSPORT-C1-J2 | AIN 2 (Temperature) | temp_in | corroborated | |
| OEM-C-26 | Coolant temp sensor | temp_in | MAXXECUSPORT-C1-J1 | AIN 1 (temperature) | temp_in | corroborated | |
| OEM-C-27 | Throttle position sensor | analog_in | MAXXECUSPORT-C1-G2 | TPS/AIN | analog_in | corroborated | |
| OEM-C-28 | Sensor 5V supply 2 | vref | MAXXECUSPORT-C1-G1 | +5V sensor supply | vref | corroborated | |
| OEM-C-29 | Cam (TDC2) sensor + | trigger_in | — | — | — | corroborated | |
| OEM-C-3 | Knock sensor | knock_in | — | — | — | conflict | |
| OEM-C-30 | Cam (TDC2) sensor − | sensor_ground | MAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2 | Sensor GND + Trigger GND | sensor_ground | corroborated | |
| OEM-C-31 | Timing ground | sensor_ground | MAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2 | Sensor GND + Trigger GND | sensor_ground | single_source | |
| OEM-C-4 | Ignition coil 1 | ignition_out | MAXXECUSPORT-C1-A2 | IGN 1 | ignition_out | corroborated | |
| OEM-C-5 | Alternator FR signal | digital_in | MAXXECUSPORT-C1-K4 | DIN 2 | digital_in | single_source | |
| OEM-C-6 | NC | — | — | — | — | unverified | |
| OEM-C-7 | Sensor ground 1 | sensor_ground | MAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2 | Sensor GND + Trigger GND | sensor_ground | corroborated | |
| OEM-C-8 | Crank sensor + (CKP+) | trigger_in | MAXXECUSPORT-C1-H3 | TRIGGER | trigger_in | corroborated | |
| OEM-C-9 | Crank sensor − (CKP−) | trigger_in | MAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2 | Sensor GND + Trigger GND | 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 | MAXXECUSPORT-C1-M4 | 0.85 | no route | +12V ECU power supply | — | |
| W4 | OEM-B-10 | SP-GND-1 | 0.85 | no route | Power ground 2 | — | |
| W5 | OEM-B-2 | SP-GND-1 | 0.85 | no route | Power ground 1 | — | |
| W6 | OEM-B-20 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W7 | OEM-B-22 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W8 | SP-GND-1 | MAXXECUSPORT-C1-L4 | 0.85 | no route | Engine GND | — | |
| W9 | OEM-C-18 | SP-0V-1 | 0.5 | no route | Sensor ground 2 | — | |
| W10 | OEM-C-30 | SP-0V-1 | 0.5 | no route | Cam (TDC2) sensor − | — | |
| W11 | OEM-C-31 | SP-0V-1 | 0.5 | no route | Timing ground | — | |
| W12 | OEM-C-7 | SP-0V-1 | 0.5 | no route | Sensor ground 1 | — | |
| W13 | SP-0V-1 | MAXXECUSPORT-C1-H1 | 0.5 | no route | Sensor GND | — | |
| W14 | SP-0V-1 | MAXXECUSPORT-C1-H2 | 0.5 | no route | Trigger GND | — | |
| W15 | OEM-C-19 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 1 (MAP) | — | |
| W16 | OEM-C-28 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 2 | — | |
| W17 | SP-5V1-1 | MAXXECUSPORT-C1-G1 | 0.5 | no route | +5V sensor supply | — | |
| W18 | OEM-C-8 | MAXXECUSPORT-C1-H3 | 0.5 | no route | Crank sensor + (CKP+) | — | |
| W19 | OEM-C-9 | SP-0V-1 | 0.5 | no route | Crank sensor − (CKP−) | — | |
| W20 | OEM-C-20 | MAXXECUSPORT-C1-H4 | 0.5 | no route | Cam (TDC1) sensor + | — | |
| W21 | OEM-C-21 | SP-0V-1 | 0.5 | no route | Cam (TDC1) sensor − | — | |
| W22 | OEM-C-4 | MAXXECUSPORT-C1-A2 | 0.5 | no route | Ignition coil 1 | — | |
| W23 | OEM-C-12 | MAXXECUSPORT-C1-A3 | 0.5 | no route | Ignition coil 2 | — | |
| W24 | OEM-C-13 | MAXXECUSPORT-C1-B2 | 0.5 | no route | Ignition coil 3 | — | |
| W25 | OEM-C-14 | MAXXECUSPORT-C1-B3 | 0.5 | no route | Ignition coil 4 | — | |
| W26 | OEM-B-11 | MAXXECUSPORT-C1-K1 | 0.5 | no route | Injector 1 | — | |
| W27 | OEM-B-3 | MAXXECUSPORT-C1-K2 | 0.5 | no route | Injector 2 | — | |
| W28 | OEM-B-4 | MAXXECUSPORT-C1-M1 | 0.5 | no route | Injector 3 | — | |
| W29 | OEM-B-5 | MAXXECUSPORT-C1-M2 | 0.5 | no route | Injector 4 | — | |
| W30 | OEM-A-15 | MAXXECUSPORT-C1-B4 | 0.5 | no route | Fuel pump relay (USDM) | — | |
| W31 | OEM-A-16 | MAXXECUSPORT-C1-C4 | 0.5 | no route | Fuel pump relay (JDM) | — | |
| W32 | OEM-A-17 | MAXXECUSPORT-C1-D4 | 0.5 | no route | A/C clutch relay | — | |
| W33 | OEM-A-20 | MAXXECUSPORT-C1-A1 | 0.5 | no route | Radiator fan relay | — | |
| W34 | OEM-A-28 | MAXXECUSPORT-C1-B1 | 0.5 | no route | Air pump relay | — | |
| W35 | OEM-B-12 | MAXXECUSPORT-C1-L1 | 0.5 | no route | VTEC solenoid | — | |
| W36 | OEM-C-1 | MAXXECUSPORT-C1-D1 | 0.5 | no route | Primary O2 heater | — | |
| W37 | OEM-C-11 | MAXXECUSPORT-C1-A4 | 0.5 | no route | Secondary O2 heater control | — | |
| W38 | OEM-B-23 | MAXXECUSPORT-C1-M3 | 0.5 | no route | Idle air control valve | — | |
| W39 | OEM-A-1 | MAXXECUSPORT-C1-L3 | 0.5 | no route | Coolant temp gauge drive | — | |
| W40 | OEM-A-12 | MAXXECUSPORT-C1-L2 | 0.5 | no route | Immobilizer indicator light | — | |
| W41 | OEM-C-17 | MAXXECUSPORT-C1-J3 | 0.5 | no route | MAP sensor | — | |
| W42 | OEM-C-27 | MAXXECUSPORT-C1-G2 | 0.5 | no route | Throttle position sensor | — | |
| W43 | OEM-A-23 | MAXXECUSPORT-C1-J4 | 0.5 | no route | Secondary O2 sensor | — | |
| W44 | OEM-C-15 | MAXXECUSPORT-C1-C1 | 0.5 | no route | Secondary O2 sensor | — | |
| W45 | OEM-C-16 | MAXXECUSPORT-C1-D2 | 0.5 | no route | Primary O2 sensor | — | |
| W46 | OEM-C-26 | MAXXECUSPORT-C1-J1 | 0.5 | no route | Coolant temp sensor | — | |
| W47 | OEM-C-25 | MAXXECUSPORT-C1-J2 | 0.5 | no route | Intake air temp sensor | — | |
| W48 | OEM-A-29 | MAXXECUSPORT-C1-D3 | 0.5 | no route | Fuel tank pressure sensor | — | |
| W49 | OEM-A-30 | MAXXECUSPORT-C1-E4 | 0.5 | no route | Electrical load detector | — | |
| W50 | OEM-A-9 | MAXXECUSPORT-C1-K3 | 0.5 | no route | Vehicle speed sensor | — | |
| W51 | OEM-C-5 | MAXXECUSPORT-C1-K4 | 0.5 | no route | Alternator FR signal | — |
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 (12)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | LOAD_UNKNOWN | MAXXECUSPORT-C1-A1 | MAXXECUSPORT-C1-A1 "GPO 4" drives OEM-A-20 Radiator fan relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUSPORT-C1-B1 | MAXXECUSPORT-C1-B1 "GPO 5" drives OEM-A-28 Air pump relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUSPORT-C1-B4 | MAXXECUSPORT-C1-B4 "GPO 1" drives OEM-A-15 Fuel pump relay (USDM) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUSPORT-C1-C4 | MAXXECUSPORT-C1-C4 "GPO 2" drives OEM-A-16 Fuel pump relay (JDM) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUSPORT-C1-D4 | MAXXECUSPORT-C1-D4 "GPO 3" drives OEM-A-17 A/C clutch relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | NET_FAMILY | OEM-A-12 ↔ MAXXECUSPORT-C1-L2 | OEM-A-12 "Immobilizer indicator light" [low_side_out] is wired to MAXXECUSPORT-C1-L2 "GPO 12/MOTOR 1+" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-B-12 ↔ MAXXECUSPORT-C1-L1 | OEM-B-12 "VTEC solenoid" [high_side_out] is wired to MAXXECUSPORT-C1-L1 "GPO 11/Motor 1-" [hbridge_out]. A half-bridge can act as a high-side switch only if configured that way. |
| warn | SUPPLY_GROUP | MAXXECUSPORT-C1-G1 + OEM-C-19 + OEM-C-28 + SP-5V1-1 | Supplies meant to stay independent share one net: OEM-C-19 [s2k_vcc1], OEM-C-28 [s2k_vcc2]. The new ECU has no free 5 V reference, so they share one: normal on a standalone, but a short on any of these sensors drops them all. |
| info | NET_FAMILY | OEM-A-1 ↔ MAXXECUSPORT-C1-L3 | OEM-A-1 "Coolant temp gauge drive" [low_side_out] is wired to MAXXECUSPORT-C1-L3 "INJ 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-B-23 ↔ MAXXECUSPORT-C1-M3 | OEM-B-23 "Idle air control valve" [low_side_out] is wired to MAXXECUSPORT-C1-M3 "INJ 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-C-21 ↔ MAXXECUSPORT-C1-H1 | OEM-C-21 "Cam (TDC1) sensor −" [trigger_in] is wired to MAXXECUSPORT-C1-H1 "Sensor GND" [sensor_ground]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 21 optional OEM pins are not mapped: OEM-A-10 Service check signal; OEM-A-13 Immobilizer enable signal; OEM-A-18 Check engine light (MIL); OEM-A-19 Tacho output; OEM-A-2 Air control valve solenoid; OEM-A-21 K-Line; OEM-A-24 Starter switch signal; OEM-A-25 Immobilizer code; OEM-A-26 Power steering load detect; OEM-A-27 A/C switch (request); OEM-A-3 Evap bypass solenoid; OEM-A-32 Brake switch; OEM-A-4 Evap canister vent shut valve; OEM-A-6 Evap canister purge valve; OEM-B-21 Backup power (battery constant); OEM-C-10 VTEC pressure switch; OEM-C-2 Alternator control; OEM-C-22 Knock sensor; OEM-C-24 Air pump electric current sensor; OEM-C-29 Cam (TDC2) sensor +; OEM-C-3 Knock sensor |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Not wired: - OEM-B 21: Backup power (battery constant): MaxxECU MaxxECU SPORT has no battery-constant input; not needed - OEM-C 29: Cam (TDC2) sensor +: no free cam_vr/cam_hall/frequency_in input on MaxxECU MaxxECU SPORT - OEM-C 22: Knock sensor: no free knock input on MaxxECU MaxxECU SPORT - OEM-C 3: Knock sensor: no free knock input on MaxxECU MaxxECU SPORT - OEM-A 18: Check engine light (MIL): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A 2: Air control valve solenoid: no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A 3: Evap bypass solenoid: no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A 4: Evap canister vent shut valve: no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A 6: Evap canister purge valve: no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-C 2: Alternator control: no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A 19: Tacho output: no free tacho/frequency_out/low_side/ls_hs on MaxxECU MaxxECU SPORT - OEM-C 24: Air pump electric current sensor: no free analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A 24: Starter switch signal: no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A 26: Power steering load detect: no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A 27: A/C switch (request): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A 32: Brake switch: no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-C 10: VTEC pressure switch: no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A 21: K-Line: no free k_line on MaxxECU MaxxECU SPORT - 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 | MaxxECU GEN1 pinout (MINI / STREET / SPORT / V1 / RACE / PRO) | http://www.maxxecu.com/webhelp/wirings-maxxecu_pinout.html | archive | 2026-10-05 | 2e37b6814690 |
| 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) | — | — | — | — |