RSX Type-S 2002-04 (K20A2) → MaxxECU MaxxECU PRO REV10+ (auto)
RSX Type-S 2002-04 (K20A2) — MaxxECU — MaxxECU PRO
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-08
Before you start
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 1: read the Findings page before cutting any wire |
| Size of the job | 69 wires · 10 connectors · 4 part lines |
| Tools | 715131-1 · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 316836-1 |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-A-2 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | MAXXECUPRO-C1-M4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | MAXXECUPRO-C3-M4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-23 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-24 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-A-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-E-3 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | MAXXECUPRO-C1-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | MAXXECUPRO-C2-H1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | MAXXECUPRO-C2-H2 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | MAXXECUPRO-C2-H3 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-GND-1 | MAXXECUPRO-C3-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-A-10 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-A-11 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-E-4 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-20 | MAXXECUPRO-C1-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-21 | MAXXECUPRO-C3-C2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-E-5 | MAXXECUPRO-C4-E3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-7 | MAXXECUPRO-C1-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-25 | MAXXECUPRO-C1-H4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-9 | MAXXECUPRO-C4-F2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-30 | MAXXECUPRO-C1-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A-29 | MAXXECUPRO-C1-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-28 | MAXXECUPRO-C1-B2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-27 | MAXXECUPRO-C1-B3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-B-5 | MAXXECUPRO-C1-K1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-B-4 | MAXXECUPRO-C1-K2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-B-3 | MAXXECUPRO-C1-M1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B-2 | MAXXECUPRO-C1-M2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-E-9 | MAXXECUPRO-C3-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-E-7 | MAXXECUPRO-C1-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-B-6 | MAXXECUPRO-C1-C4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-E-1 | MAXXECUPRO-C1-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-E-18 | MAXXECUPRO-C1-E4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-E-8 | MAXXECUPRO-C1-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-E-6 | MAXXECUPRO-C1-D1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-1 | MAXXECUPRO-C3-E1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-12 | MAXXECUPRO-C1-B1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-B-15 | MAXXECUPRO-C1-C1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-B-1 | MAXXECUPRO-C1-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-B-18 | MAXXECUPRO-C4-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-B-21 | MAXXECUPRO-C4-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-B-23 | MAXXECUPRO-C4-G3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-B-7 | MAXXECUPRO-C4-G4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-E-21 | MAXXECUPRO-C4-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-E-31 | MAXXECUPRO-C4-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-E-26 | MAXXECUPRO-C4-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-A-6 | MAXXECUPRO-C1-G3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-A-16 | MAXXECUPRO-C1-F4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-A-19 | MAXXECUPRO-C1-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-A-15 | MAXXECUPRO-C1-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-E-2 | MAXXECUPRO-C1-J4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-B-8 | MAXXECUPRO-C1-J1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-B-17 | MAXXECUPRO-C1-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-B-13 | MAXXECUPRO-C3-C3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-E-14 | MAXXECUPRO-C3-D1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-E-15 | MAXXECUPRO-C3-D2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-A-18 | MAXXECUPRO-C1-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-B-10 | MAXXECUPRO-C1-K4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-B-9 | MAXXECUPRO-C3-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-E-16 | MAXXECUPRO-C3-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W68 | OEM-E-20 | MAXXECUPRO-C4-D3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W69 | OEM-E-22 | MAXXECUPRO-C4-D4 | 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 | MAXXECUPRO-C1-M4 | MAXXECUPRO-C1-H1 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | MAXXECUPRO-C1-M4 | MAXXECUPRO-C1-L4 | open (OL) | +12 V supply must not touch power ground | |
| 3 | MAXXECUPRO-C1-H1 | MAXXECUPRO-C1-G1 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 4 | MAXXECUPRO-C1-H1 | MAXXECUPRO-C3-C2 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 5 | MAXXECUPRO-C1-H1 | MAXXECUPRO-C4-E3 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 6 | MAXXECUPRO-C1-L4 | MAXXECUPRO-C1-G1 | open (OL) | power ground must not touch 5 V sensor reference | |
| 7 | MAXXECUPRO-C1-L4 | MAXXECUPRO-C3-C2 | open (OL) | power ground must not touch 5 V sensor reference | |
| 8 | MAXXECUPRO-C1-L4 | MAXXECUPRO-C4-E3 | open (OL) | power ground must not touch 5 V sensor reference | |
| 9 | MAXXECUPRO-C1-M4 | MAXXECUPRO-C1-G1 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 10 | MAXXECUPRO-C1-M4 | MAXXECUPRO-C3-C2 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 11 | MAXXECUPRO-C1-M4 | MAXXECUPRO-C4-E3 | open (OL) | +12 V supply must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MAXXECUPRO-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | GPO 5 | — | W41 | — | 0.5 | OEM-E-8 | — | — | — |
| A2 | IGN 1 | — | W28 | — | 0.5 | OEM-A-30 | — | — | — |
| A3 | IGN 2 | — | W29 | — | 0.5 | OEM-A-29 | — | — | — |
| A4 | GPO 8/TACHO | — | W46 | — | 0.5 | OEM-B-1 | — | — | — |
| B1 | GPO 6 | — | W44 | — | 0.5 | OEM-A-12 | — | — | — |
| B2 | IGN 3 | — | W30 | — | 0.5 | OEM-A-28 | — | — | — |
| B3 | IGN 4 | — | W31 | — | 0.5 | OEM-A-27 | — | — | — |
| B4 | GPO 1 | — | W37 | — | 0.5 | OEM-E-7 | — | — | — |
| C1 | GPO 7 | — | W45 | — | 0.5 | OEM-B-15 | — | — | — |
| C2 | IGN 5 | — | — | — | — | — | — | — | — |
| C3 | IGN 6 | — | — | — | — | — | — | — | — |
| C4 | GPO 2 | — | W38 | — | 0.5 | OEM-B-6 | — | — | — |
| D1 | WBO2 Heater- | — | W42 | — | 0.5 | OEM-E-6 | — | — | — |
| D2 | IGN 7 | — | — | — | — | — | — | — | — |
| D3 | IGN 8 | — | — | — | — | — | — | — | — |
| D4 | GPO 3 | — | W39 | — | 0.5 | OEM-E-1 | — | — | — |
| E1 | CAN H | — | — | — | — | — | — | — | — |
| E2 | CAN L | — | — | — | — | — | — | — | — |
| E3 | GND Shield | — | — | — | — | — | — | — | — |
| E4 | GPO 4 | — | W40 | — | 0.5 | OEM-E-18 | — | — | — |
| F1 | CLT | — | — | — | — | — | — | — | — |
| F2 | IAT | — | — | — | — | — | — | — | — |
| F3 | WBO2 VREF | — | — | — | — | — | — | — | — |
| F4 | WBO2 VS | — | W55 | — | 0.5 | OEM-A-16 | — | — | — |
| G1 | +5V sensor supply | — | W22 | — | 0.5 | OEM-A-20 | — | — | — |
| G2 | TPS/AIN | — | W57 | — | 0.5 | OEM-A-15 | — | — | — |
| G3 | WBO2 IP | — | W54 | — | 0.5 | OEM-A-6 | — | — | — |
| G4 | WBO2 RCAL | — | — | — | — | — | — | — | — |
| H1 | Sensor GND | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| H2 | Trigger GND | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| H3 | TRIGGER | — | W25 | — | 0.5 | OEM-A-7 | — | — | — |
| H4 | HOME | — | W26 | — | 0.5 | OEM-A-25 | — | — | — |
| J1 | AIN 1 (temperature) | — | W59 | — | 0.5 | OEM-B-8 | — | — | — |
| J2 | AIN 2 (temperature) | — | W60 | — | 0.5 | OEM-B-17 | — | — | — |
| J3 | AIN 3 (0-5V) | — | W56 | — | 0.5 | OEM-A-19 | — | — | — |
| J4 | AIN 4 (0-5V) | — | W58 | — | 0.5 | OEM-E-2 | — | — | — |
| K1 | INJ 1 | — | W32 | — | 0.5 | OEM-B-5 | — | — | — |
| K2 | INJ 2 | — | W33 | — | 0.5 | OEM-B-4 | — | — | — |
| K3 | DIN/VR 1 | — | W64 | — | 0.5 | OEM-A-18 | — | — | — |
| K4 | DIN/VR 2 | — | W65 | — | 0.5 | OEM-B-10 | — | — | — |
| L1 | INJ 8 | — | — | — | — | — | — | — | — |
| L2 | INJ 7 | — | — | — | — | — | — | — | — |
| L3 | INJ 6 | — | — | — | — | — | — | — | — |
| L4 | Engine GND | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJ 3 | — | W34 | — | 0.5 | OEM-B-3 | — | — | — |
| M2 | INJ 4 | — | W35 | — | 0.5 | OEM-B-2 | — | — | — |
| M3 | INJ 5 | — | — | — | — | — | — | — | — |
| M4 | +12V ECU power supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
MAXXECUPRO-C2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | EGT 1+ | — | — | — | — | — | — | — | — |
| A2 | EGT 2+ | — | — | — | — | — | — | — | — |
| A3 | EGT 3+ | — | — | — | — | — | — | — | — |
| A4 | EGT 4+ | — | — | — | — | — | — | — | — |
| B1 | EGT 1- | — | — | — | — | — | — | — | — |
| B2 | EGT 2- | — | — | — | — | — | — | — | — |
| B3 | EGT 3- | — | — | — | — | — | — | — | — |
| B4 | EGT 4- | — | — | — | — | — | — | — | — |
| C1 | EGT 5+ | — | — | — | — | — | — | — | — |
| C2 | EGT 6+ | — | — | — | — | — | — | — | — |
| C3 | EGT 7+ | — | — | — | — | — | — | — | — |
| C4 | EGT 8+ | — | — | — | — | — | — | — | — |
| D1 | EGT 5- | — | — | — | — | — | — | — | — |
| D2 | EGT 6- | — | — | — | — | — | — | — | — |
| D3 | EGT 7- | — | — | — | — | — | — | — | — |
| D4 | EGT 8- | — | — | — | — | — | — | — | — |
| E1 | EGT 9+ | — | — | — | — | — | — | — | — |
| E2 | EGT 10+ | — | — | — | — | — | — | — | — |
| E3 | EGT 11+ | — | — | — | — | — | — | — | — |
| E4 | EGT 12+ | — | — | — | — | — | — | — | — |
| F1 | EGT 9- | — | — | — | — | — | — | — | — |
| F2 | EGT 10- | — | — | — | — | — | — | — | — |
| F3 | EGT 11- | — | — | — | — | — | — | — | — |
| F4 | EGT 12- | — | — | — | — | — | — | — | — |
| H1 | Engine ground 3 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| H2 | Engine ground 3 | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| H3 | Engine ground 3 | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
MAXXECUPRO-C3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | DIN/VR 4 | — | — | — | — | — | — | — | — |
| A2 | DIN/VR 5 | — | — | — | — | — | — | — | — |
| A3 | DIN 6 (SWITCH) | — | W66 | — | 0.5 | OEM-B-9 | — | — | — |
| A4 | DIN 7 (SWITCH) | — | W67 | — | 0.5 | OEM-E-16 | — | — | — |
| B1 | WBO2 2 RCAL | — | — | — | — | — | — | — | — |
| B2 | WBO2 2 IP | — | — | — | — | — | — | — | — |
| B3 | WBO2 2 VS | — | — | — | — | — | — | — | — |
| B4 | WBO2 2 COM | — | — | — | — | — | — | — | — |
| C1 | WBO2 2 Shield | — | — | — | — | — | — | — | — |
| C2 | +5V SENSOR SUPPLY 2 | — | W23 | — | 0.5 | OEM-A-21 | — | — | — |
| C3 | ANALOG IN 5 (0-5V) | — | W61 | — | 0.5 | OEM-B-13 | — | — | — |
| C4 | GPO 19 (12V) | — | — | — | — | — | — | — | — |
| D1 | ANALOG IN 6 (0-5V) | — | W62 | — | 0.5 | OEM-E-14 | — | — | — |
| D2 | ANALOG IN 7 (0-5V) | — | W63 | — | 0.5 | OEM-E-15 | — | — | — |
| D3 | ANALOG IN 8 (0-5V) | — | — | — | — | — | — | — | — |
| D4 | GPO 20 (12V) | — | — | — | — | — | — | — | — |
| E1 | GPO 10/WBO2 2 HTR | — | W43 | — | 0.5 | OEM-A-1 | — | — | — |
| E2 | ANALOG IN 9 (0-5V) | — | — | — | — | — | — | — | — |
| E3 | ANALOG IN 10 (0-5V) | — | — | — | — | — | — | — | — |
| E4 | GPO 21 (12V) | — | — | — | — | — | — | — | — |
| F1 | INJECTOR OUT 15 | — | — | — | — | — | — | — | — |
| F2 | ANALOG IN 11 (0-5V) | — | — | — | — | — | — | — | — |
| F3 | ANALOG IN 12 (0-5V) | — | — | — | — | — | — | — | — |
| F4 | GPO 22 (12V) | — | — | — | — | — | — | — | — |
| G1 | INJECTOR OUT 14 | — | — | — | — | — | — | — | — |
| G2 | IGNITION OUT 11 | — | — | — | — | — | — | — | — |
| G3 | IGNITION OUT 9 | — | — | — | — | — | — | — | — |
| G4 | GPO 15 (12V) | — | — | — | — | — | — | — | — |
| H1 | INJECTOR OUT 13 | — | — | — | — | — | — | — | — |
| H2 | IGNITION OUT 12 | — | — | — | — | — | — | — | — |
| H3 | IGNITION OUT 10 | — | — | — | — | — | — | — | — |
| H4 | GPO 16 (12V) | — | — | — | — | — | — | — | — |
| J1 | INJECTOR OUT 16 | — | — | — | — | — | — | — | — |
| J2 | SENSOR GND | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| J3 | SENSOR GND | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| J4 | GPO 17 (12V) | — | — | — | — | — | — | — | — |
| K1 | INJECTOR OUT 10 | — | — | — | — | — | — | — | — |
| K2 | INJECTOR OUT 9 | — | — | — | — | — | — | — | — |
| K3 | KEY IN 12V | — | W36 | — | 0.5 | OEM-E-9 | — | — | — |
| K4 | GPO 18 (12V) | — | — | — | — | — | — | — | — |
| L1 | INJECTOR OUT 11 | — | — | — | — | — | — | — | — |
| L2 | GPO 12/MOTOR 1 + | — | — | — | — | — | — | — | — |
| L3 | GPO 11/MOTOR 1 - | — | — | — | — | — | — | — | — |
| L4 | ENGINE GROUND 2 | — | W14 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJECTOR OUT 12 | — | — | — | — | — | — | — | — |
| M2 | GPO 13/MOTOR 2 + | — | — | — | — | — | — | — | — |
| M3 | GPO 14/MOTOR 2 - | — | — | — | — | — | — | — | — |
| M4 | 12V ECU 2 | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
MAXXECUPRO-C4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | CAN 2 H | — | — | — | — | — | — | — | — |
| A2 | CAN 2 L | — | — | — | — | — | — | — | — |
| A3 | 0-5V out 1 | — | — | — | — | — | — | — | — |
| A4 | 0-5V out 2 | — | — | — | — | — | — | — | — |
| B1 | AIN 18 (0-5V) | — | — | — | — | — | — | — | — |
| B2 | AIN 17 (0-5V) | — | — | — | — | — | — | — | — |
| B3 | AIN 16 (0-5V) | — | — | — | — | — | — | — | — |
| B4 | AIN 15 (0-5V) | — | — | — | — | — | — | — | — |
| C1 | AIN 14 (0-5V) | — | — | — | — | — | — | — | — |
| C2 | AIN 13 (0-5V) | — | — | — | — | — | — | — | — |
| C3 | AIN 19 (temp) | — | — | — | — | — | — | — | — |
| C4 | AIN 20 (temp) | — | — | — | — | — | — | — | — |
| D1 | AIN 21 (temp) | — | — | — | — | — | — | — | — |
| D2 | AIN 22 (temp) | — | — | — | — | — | — | — | — |
| D3 | DIN 8 (switch) | — | W68 | — | 0.5 | OEM-E-20 | — | — | — |
| D4 | DIN 9 (switch) | — | W69 | — | 0.5 | OEM-E-22 | — | — | — |
| E1 | DIN 10 (switch) | — | — | — | — | — | — | — | — |
| E2 | DIN 11 (switch) | — | — | — | — | — | — | — | — |
| E3 | +5V sensor supply 3 | — | W24 | — | 0.5 | OEM-E-5 | — | — | — |
| E4 | 5-10V sensor supply | — | — | — | — | — | — | — | — |
| F1 | GPO 23-30 flyback | — | — | — | — | — | — | — | — |
| F2 | Knock 1 | — | W27 | — | 0.5 | OEM-A-9 | — | — | — |
| F3 | Knock 2 | — | — | — | — | — | — | — | — |
| F4 | Sensor GND3 / knock ground | — | — | — | — | — | — | — | — |
| G1 | GPO 23 | — | W47 | — | 0.5 | OEM-B-18 | — | — | — |
| G2 | GPO 24 | — | W48 | — | 0.5 | OEM-B-21 | — | — | — |
| G3 | GPO 25 | — | W49 | — | 0.5 | OEM-B-23 | — | — | — |
| G4 | GPO 26 | — | W50 | — | 0.5 | OEM-B-7 | — | — | — |
| H1 | GPO 27 | — | W51 | — | 0.5 | OEM-E-21 | — | — | — |
| H2 | GPO 28 | — | W52 | — | 0.5 | OEM-E-31 | — | — | — |
| H3 | GPO 29 | — | W53 | — | 0.5 | OEM-E-26 | — | — | — |
| H4 | GPO 30 | — | — | — | — | — | — | — | — |
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | A/F sensor heater control (AFSHTC) | — | W43 | — | 0.5 | MAXXECUPRO-C3-E1 | — | — | — |
| 2 | Ignition power 2 (IGP2) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Ignition power 1 (IGP1) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Power ground 2 (PG2) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Power ground 1 (PG1) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | A/F sensor + (AFS+, wideband Ip) | — | W54 | — | 0.5 | MAXXECUPRO-C1-G3 | — | — | — |
| 7 | Crank position sensor (CKP) | — | W25 | — | 0.5 | MAXXECUPRO-C1-H3 | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | Knock sensor (KS) | — | W27 | — | 0.5 | MAXXECUPRO-C4-F2 | — | — | — |
| 10 | Sensor ground 2 (SG2) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 11 | Sensor ground 1 (SG1) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 12 | Idle air control valve (IACV) | — | W44 | — | 0.5 | MAXXECUPRO-C1-B1 | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | Throttle position sensor (TPS) | — | W57 | — | 0.5 | MAXXECUPRO-C1-G2 | — | — | — |
| 16 | A/F sensor - (AFS-, wideband Vs) | — | W55 | — | 0.5 | MAXXECUPRO-C1-F4 | — | — | — |
| 17 | — | — | — | — | — | — | — | — | — |
| 18 | Vehicle speed sensor (VSS, M/T) | — | W64 | — | 0.5 | MAXXECUPRO-C1-K3 | — | — | — |
| 19 | Manifold absolute pressure (MAP) | — | W56 | — | 0.5 | MAXXECUPRO-C1-J3 | — | — | — |
| 20 | Sensor 5V supply 2 (VCC2) | — | W22 | — | 0.5 | MAXXECUPRO-C1-G1 | — | — | — |
| 21 | Sensor 5V supply 1 (VCC1) | — | W23 | — | 0.5 | MAXXECUPRO-C3-C2 | — | — | — |
| 22 | A/F sensor heater supply (AFSHTC+) | — | — | — | — | — | — | — | — |
| 23 | Logic ground 2 (LG2) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 24 | Logic ground 1 (LG1) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | Camshaft position A (CMP A) | — | W26 | — | 0.5 | MAXXECUPRO-C1-H4 | — | — | — |
| 26 | Camshaft position B (CMP B) | — | — | — | — | — | — | — | — |
| 27 | Ignition coil 4 (IGPLS4) | — | W31 | — | 0.5 | MAXXECUPRO-C1-B3 | — | — | — |
| 28 | Ignition coil 3 (IGPLS3) | — | W30 | — | 0.5 | MAXXECUPRO-C1-B2 | — | — | — |
| 29 | Ignition coil 2 (IGPLS2) | — | W29 | — | 0.5 | MAXXECUPRO-C1-A3 | — | — | — |
| 30 | Ignition coil 1 (IGPLS1) | — | W28 | — | 0.5 | MAXXECUPRO-C1-A2 | — | — | — |
| 31 | — | — | — | — | — | — | — | — | — |
OEM-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | VTC oil control solenoid (+) | — | W46 | — | 0.5 | MAXXECUPRO-C1-A4 | — | — | — |
| 2 | Injector 4 (INJ4) | — | W35 | — | 0.5 | MAXXECUPRO-C1-M2 | — | — | — |
| 3 | Injector 3 (INJ3) | — | W34 | — | 0.5 | MAXXECUPRO-C1-M1 | — | — | — |
| 4 | Injector 2 (INJ2) | — | W33 | — | 0.5 | MAXXECUPRO-C1-K2 | — | — | — |
| 5 | Injector 1 (INJ1) | — | W32 | — | 0.5 | MAXXECUPRO-C1-K1 | — | — | — |
| 6 | Radiator fan control (FANC) | — | W38 | — | 0.5 | MAXXECUPRO-C1-C4 | — | — | — |
| 7 | Reverse lockout solenoid (RVS, Type-S) | — | W50 | — | 0.5 | MAXXECUPRO-C4-G4 | — | — | — |
| 8 | Coolant temp sensor (ECT) | — | W59 | — | 0.5 | MAXXECUPRO-C1-J1 | — | — | — |
| 9 | VTEC oil pressure switch (VTPSW) | — | W66 | — | 0.5 | MAXXECUPRO-C3-A3 | — | — | — |
| 10 | Alternator L signal (ALTL) | — | W65 | — | 0.5 | MAXXECUPRO-C1-K4 | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | Alternator FR signal (ALTF) | — | W61 | — | 0.5 | MAXXECUPRO-C3-C3 | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | VTEC solenoid (VTS) | — | W45 | — | 0.5 | MAXXECUPRO-C1-C1 | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Intake air temp sensor (IAT) | — | W60 | — | 0.5 | MAXXECUPRO-C1-J2 | — | — | — |
| 18 | Alternator control (ALTC) | — | W47 | — | 0.5 | MAXXECUPRO-C4-G1 | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | Evap canister purge valve (PCS) | — | W48 | — | 0.5 | MAXXECUPRO-C4-G2 | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | VTC oil control solenoid (-) | — | W49 | — | 0.5 | MAXXECUPRO-C4-G3 | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
OEM-E
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Immobilizer fuel pump relay (IMO FPR) | — | W39 | — | 0.5 | MAXXECUPRO-C1-D4 | — | — | — |
| 2 | Secondary heated O2 sensor (SHO2S) | — | W58 | — | 0.5 | MAXXECUPRO-C1-J4 | — | — | — |
| 3 | Logic ground 3 (LG3) | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Sensor ground 3 (SG3) | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Sensor 5V supply 3 (VCC3) | — | W24 | — | 0.5 | MAXXECUPRO-C4-E3 | — | — | — |
| 6 | Secondary O2 heater control (SO2SHTC) | — | W42 | — | 0.5 | MAXXECUPRO-C1-D1 | — | — | — |
| 7 | Main relay control (MRLY) | — | W37 | — | 0.5 | MAXXECUPRO-C1-B4 | — | — | — |
| 8 | A/F sensor heater relay control (AFSHTCR) | — | W41 | — | 0.5 | MAXXECUPRO-C1-A1 | — | — | — |
| 9 | Ignition switch signal (IG1) | — | W36 | — | 0.5 | MAXXECUPRO-C3-K3 | — | — | — |
| 10 | — | — | — | — | — | — | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | Fuel tank pressure sensor (FTP) | — | W62 | — | 0.5 | MAXXECUPRO-C3-D1 | — | — | — |
| 15 | Electrical load detector (ELD) | — | W63 | — | 0.5 | MAXXECUPRO-C3-D2 | — | — | — |
| 16 | Power steering pressure switch (PSPSW) | — | W67 | — | 0.5 | MAXXECUPRO-C3-A4 | — | — | — |
| 17 | — | — | — | — | — | — | — | — | — |
| 18 | A/C clutch relay (ACC) | — | W40 | — | 0.5 | MAXXECUPRO-C1-E4 | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | Brake switch / interlock (2WBS) | — | W68 | — | 0.5 | MAXXECUPRO-C4-D3 | — | — | — |
| 21 | Evap vent shut valve (VSV) | — | W51 | — | 0.5 | MAXXECUPRO-C4-H1 | — | — | — |
| 22 | Brake switch (BKSW) | — | W69 | — | 0.5 | MAXXECUPRO-C4-D4 | — | — | — |
| 23 | K-line (diagnostic) | — | — | — | — | — | — | — | — |
| 24 | Multiplex communication (SEFMJ) | — | — | — | — | — | — | — | — |
| 25 | — | — | — | — | — | — | — | — | — |
| 26 | Engine speed pulse / tacho (NEP) | — | W53 | — | 0.5 | MAXXECUPRO-C4-H3 | — | — | — |
| 27 | Immobilizer code (IMOCD) | — | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | — | — |
| 29 | Service check signal (SCS) | — | — | — | — | — | — | — | — |
| 30 | Write enable signal (WEN) | — | — | — | — | — | — | — | — |
| 31 | Malfunction indicator lamp (MIL) | — | W52 | — | 0.5 | MAXXECUPRO-C4-H2 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W21 | — | 0.5 | MAXXECUPRO-C3-J3 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-A-10 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-A-11 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-E-4 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | MAXXECUPRO-C1-H1 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | MAXXECUPRO-C1-H2 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | MAXXECUPRO-C3-J2 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-2 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-A-3 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | MAXXECUPRO-C1-M4 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | MAXXECUPRO-C3-M4 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-A-23 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A-24 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-4 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-A-5 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-E-3 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MAXXECUPRO-C1-L4 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | MAXXECUPRO-C2-H1 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | MAXXECUPRO-C2-H2 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | MAXXECUPRO-C2-H3 | — | — | — |
| 1 | — | — | W14 | — | 0.85 | MAXXECUPRO-C3-L4 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | A/F sensor heater control (AFSHTC) | low_side_out | MAXXECUPRO-C3-E1 | GPO 10/WBO2 2 HTR | low_side_out | single_source | |
| OEM-A-10 | Sensor ground 2 (SG2) | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | corroborated | |
| OEM-A-11 | Sensor ground 1 (SG1) | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | corroborated | |
| OEM-A-12 | Idle air control valve (IACV) | low_side_out | MAXXECUPRO-C1-B1 | GPO 6 | low_side_out | corroborated | |
| OEM-A-15 | Throttle position sensor (TPS) | analog_in | MAXXECUPRO-C1-G2 | TPS/AIN | analog_in | corroborated | |
| OEM-A-16 | A/F sensor - (AFS-, wideband Vs) | wb_vs | MAXXECUPRO-C1-F4 | WBO2 VS | wb_vs | single_source | |
| OEM-A-18 | Vehicle speed sensor (VSS, M/T) | digital_in | MAXXECUPRO-C1-K3 | DIN/VR 1 | digital_in | corroborated | |
| OEM-A-19 | Manifold absolute pressure (MAP) | analog_in | MAXXECUPRO-C1-J3 | AIN 3 (0-5V) | analog_in | corroborated | |
| OEM-A-2 | Ignition power 2 (IGP2) | power_in | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | corroborated | |
| OEM-A-20 | Sensor 5V supply 2 (VCC2) | vref | MAXXECUPRO-C1-G1 | +5V sensor supply | vref | corroborated | |
| OEM-A-21 | Sensor 5V supply 1 (VCC1) | vref | MAXXECUPRO-C3-C2 | +5V SENSOR SUPPLY 2 | vref | corroborated | |
| OEM-A-22 | A/F sensor heater supply (AFSHTC+) | power_out | — | — | — | single_source | |
| OEM-A-23 | Logic ground 2 (LG2) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | corroborated | |
| OEM-A-24 | Logic ground 1 (LG1) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | corroborated | |
| OEM-A-25 | Camshaft position A (CMP A) | trigger_in | MAXXECUPRO-C1-H4 | HOME | trigger_in | single_source | |
| OEM-A-26 | Camshaft position B (CMP B) | trigger_in | — | — | — | single_source | |
| OEM-A-27 | Ignition coil 4 (IGPLS4) | ignition_out | MAXXECUPRO-C1-B3 | IGN 4 | ignition_out | corroborated | |
| OEM-A-28 | Ignition coil 3 (IGPLS3) | ignition_out | MAXXECUPRO-C1-B2 | IGN 3 | ignition_out | corroborated | |
| OEM-A-29 | Ignition coil 2 (IGPLS2) | ignition_out | MAXXECUPRO-C1-A3 | IGN 2 | ignition_out | corroborated | |
| OEM-A-3 | Ignition power 1 (IGP1) | power_in | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | corroborated | |
| OEM-A-30 | Ignition coil 1 (IGPLS1) | ignition_out | MAXXECUPRO-C1-A2 | IGN 1 | ignition_out | corroborated | |
| OEM-A-4 | Power ground 2 (PG2) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | corroborated | |
| OEM-A-5 | Power ground 1 (PG1) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | corroborated | |
| OEM-A-6 | A/F sensor + (AFS+, wideband Ip) | wb_ip | MAXXECUPRO-C1-G3 | WBO2 IP | wb_ip | single_source | |
| OEM-A-7 | Crank position sensor (CKP) | trigger_in | MAXXECUPRO-C1-H3 | TRIGGER | trigger_in | corroborated | |
| OEM-A-9 | Knock sensor (KS) | knock_in | MAXXECUPRO-C4-F2 | Knock 1 | knock_in | corroborated | |
| OEM-B-1 | VTC oil control solenoid (+) | low_side_out | MAXXECUPRO-C1-A4 | GPO 8/TACHO | low_side_out | corroborated | |
| OEM-B-10 | Alternator L signal (ALTL) | digital_in | MAXXECUPRO-C1-K4 | DIN/VR 2 | digital_in | single_source | |
| OEM-B-13 | Alternator FR signal (ALTF) | analog_in | MAXXECUPRO-C3-C3 | ANALOG IN 5 (0-5V) | analog_in | single_source | |
| OEM-B-15 | VTEC solenoid (VTS) | low_side_out | MAXXECUPRO-C1-C1 | GPO 7 | low_side_out | single_source | |
| OEM-B-17 | Intake air temp sensor (IAT) | temp_in | MAXXECUPRO-C1-J2 | AIN 2 (temperature) | temp_in | corroborated | |
| OEM-B-18 | Alternator control (ALTC) | low_side_out | MAXXECUPRO-C4-G1 | GPO 23 | low_side_out | corroborated | |
| OEM-B-2 | Injector 4 (INJ4) | injector_out | MAXXECUPRO-C1-M2 | INJ 4 | injector_out | corroborated | |
| OEM-B-21 | Evap canister purge valve (PCS) | low_side_out | MAXXECUPRO-C4-G2 | GPO 24 | low_side_out | corroborated | |
| OEM-B-23 | VTC oil control solenoid (-) | low_side_out | MAXXECUPRO-C4-G3 | GPO 25 | low_side_out | corroborated | |
| OEM-B-3 | Injector 3 (INJ3) | injector_out | MAXXECUPRO-C1-M1 | INJ 3 | injector_out | corroborated | |
| OEM-B-4 | Injector 2 (INJ2) | injector_out | MAXXECUPRO-C1-K2 | INJ 2 | injector_out | corroborated | |
| OEM-B-5 | Injector 1 (INJ1) | injector_out | MAXXECUPRO-C1-K1 | INJ 1 | injector_out | corroborated | |
| OEM-B-6 | Radiator fan control (FANC) | low_side_out | MAXXECUPRO-C1-C4 | GPO 2 | low_side_out | corroborated | |
| OEM-B-7 | Reverse lockout solenoid (RVS, Type-S) | low_side_out | MAXXECUPRO-C4-G4 | GPO 26 | low_side_out | corroborated | |
| OEM-B-8 | Coolant temp sensor (ECT) | temp_in | MAXXECUPRO-C1-J1 | AIN 1 (temperature) | temp_in | corroborated | |
| OEM-B-9 | VTEC oil pressure switch (VTPSW) | digital_in | MAXXECUPRO-C3-A3 | DIN 6 (SWITCH) | digital_in | corroborated | |
| OEM-E-1 | Immobilizer fuel pump relay (IMO FPR) | low_side_out | MAXXECUPRO-C1-D4 | GPO 3 | low_side_out | corroborated | |
| OEM-E-14 | Fuel tank pressure sensor (FTP) | analog_in | MAXXECUPRO-C3-D1 | ANALOG IN 6 (0-5V) | analog_in | corroborated | |
| OEM-E-15 | Electrical load detector (ELD) | analog_in | MAXXECUPRO-C3-D2 | ANALOG IN 7 (0-5V) | analog_in | corroborated | |
| OEM-E-16 | Power steering pressure switch (PSPSW) | digital_in | MAXXECUPRO-C3-A4 | DIN 7 (SWITCH) | digital_in | corroborated | |
| OEM-E-18 | A/C clutch relay (ACC) | low_side_out | MAXXECUPRO-C1-E4 | GPO 4 | low_side_out | corroborated | |
| OEM-E-2 | Secondary heated O2 sensor (SHO2S) | lambda_nb_in | MAXXECUPRO-C1-J4 | AIN 4 (0-5V) | analog_in | corroborated | |
| OEM-E-20 | Brake switch / interlock (2WBS) | digital_in | MAXXECUPRO-C4-D3 | DIN 8 (switch) | digital_in | single_source | |
| OEM-E-21 | Evap vent shut valve (VSV) | low_side_out | MAXXECUPRO-C4-H1 | GPO 27 | low_side_out | corroborated | |
| OEM-E-22 | Brake switch (BKSW) | digital_in | MAXXECUPRO-C4-D4 | DIN 9 (switch) | digital_in | corroborated | |
| OEM-E-23 | K-line (diagnostic) | serial | — | — | — | single_source | |
| OEM-E-24 | Multiplex communication (SEFMJ) | serial | — | — | — | corroborated | |
| OEM-E-26 | Engine speed pulse / tacho (NEP) | tacho_out | MAXXECUPRO-C4-H3 | GPO 29 | low_side_out | corroborated | |
| OEM-E-27 | Immobilizer code (IMOCD) | — | — | — | — | single_source | |
| OEM-E-29 | Service check signal (SCS) | — | — | — | — | single_source | |
| OEM-E-3 | Logic ground 3 (LG3) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | corroborated | |
| OEM-E-30 | Write enable signal (WEN) | — | — | — | — | single_source | |
| OEM-E-31 | Malfunction indicator lamp (MIL) | low_side_out | MAXXECUPRO-C4-H2 | GPO 28 | low_side_out | corroborated | |
| OEM-E-4 | Sensor ground 3 (SG3) | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | corroborated | |
| OEM-E-5 | Sensor 5V supply 3 (VCC3) | vref | MAXXECUPRO-C4-E3 | +5V sensor supply 3 | vref | corroborated | |
| OEM-E-6 | Secondary O2 heater control (SO2SHTC) | low_side_out | MAXXECUPRO-C1-D1 | WBO2 Heater- | low_side_out | corroborated | |
| OEM-E-7 | Main relay control (MRLY) | low_side_out | MAXXECUPRO-C1-B4 | GPO 1 | low_side_out | corroborated | |
| OEM-E-8 | A/F sensor heater relay control (AFSHTCR) | low_side_out | MAXXECUPRO-C1-A1 | GPO 5 | low_side_out | corroborated | |
| OEM-E-9 | Ignition switch signal (IG1) | digital_in | MAXXECUPRO-C3-K3 | KEY IN 12V | digital_in | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-2 | SP-14V-1 | 0.85 | no route | Ignition power 2 (IGP2) | — | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | no route | Ignition power 1 (IGP1) | — | |
| W3 | SP-14V-1 | MAXXECUPRO-C1-M4 | 0.85 | no route | +12V ECU power supply | — | |
| W4 | SP-14V-1 | MAXXECUPRO-C3-M4 | 0.85 | no route | 12V ECU 2 | — | |
| W5 | OEM-A-23 | SP-GND-1 | 0.85 | no route | Logic ground 2 (LG2) | — | |
| W6 | OEM-A-24 | SP-GND-1 | 0.85 | no route | Logic ground 1 (LG1) | — | |
| W7 | OEM-A-4 | SP-GND-1 | 0.85 | no route | Power ground 2 (PG2) | — | |
| W8 | OEM-A-5 | SP-GND-1 | 0.85 | no route | Power ground 1 (PG1) | — | |
| W9 | OEM-E-3 | SP-GND-1 | 0.85 | no route | Logic ground 3 (LG3) | — | |
| W10 | SP-GND-1 | MAXXECUPRO-C1-L4 | 0.85 | no route | Engine GND | — | |
| W11 | SP-GND-1 | MAXXECUPRO-C2-H1 | 0.85 | no route | Engine ground 3 | — | |
| W12 | SP-GND-1 | MAXXECUPRO-C2-H2 | 0.85 | no route | Engine ground 3 | — | |
| W13 | SP-GND-1 | MAXXECUPRO-C2-H3 | 0.85 | no route | Engine ground 3 | — | |
| W14 | SP-GND-1 | MAXXECUPRO-C3-L4 | 0.85 | no route | ENGINE GROUND 2 | — | |
| W15 | OEM-A-10 | SP-0V-1 | 0.5 | no route | Sensor ground 2 (SG2) | — | |
| W16 | OEM-A-11 | SP-0V-1 | 0.5 | no route | Sensor ground 1 (SG1) | — | |
| W17 | OEM-E-4 | SP-0V-1 | 0.5 | no route | Sensor ground 3 (SG3) | — | |
| W18 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | no route | Sensor GND | — | |
| W19 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | no route | Trigger GND | — | |
| W20 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | no route | SENSOR GND | — | |
| W21 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | no route | SENSOR GND | — | |
| W22 | OEM-A-20 | MAXXECUPRO-C1-G1 | 0.5 | no route | Sensor 5V supply 2 (VCC2) | — | |
| W23 | OEM-A-21 | MAXXECUPRO-C3-C2 | 0.5 | no route | Sensor 5V supply 1 (VCC1) | — | |
| W24 | OEM-E-5 | MAXXECUPRO-C4-E3 | 0.5 | no route | Sensor 5V supply 3 (VCC3) | — | |
| W25 | OEM-A-7 | MAXXECUPRO-C1-H3 | 0.5 | no route | Crank position sensor (CKP) | — | |
| W26 | OEM-A-25 | MAXXECUPRO-C1-H4 | 0.5 | no route | Camshaft position A (CMP A) | — | |
| W27 | OEM-A-9 | MAXXECUPRO-C4-F2 | 0.5 | no route | Knock sensor (KS) | — | |
| W28 | OEM-A-30 | MAXXECUPRO-C1-A2 | 0.5 | no route | Ignition coil 1 (IGPLS1) | — | |
| W29 | OEM-A-29 | MAXXECUPRO-C1-A3 | 0.5 | no route | Ignition coil 2 (IGPLS2) | — | |
| W30 | OEM-A-28 | MAXXECUPRO-C1-B2 | 0.5 | no route | Ignition coil 3 (IGPLS3) | — | |
| W31 | OEM-A-27 | MAXXECUPRO-C1-B3 | 0.5 | no route | Ignition coil 4 (IGPLS4) | — | |
| W32 | OEM-B-5 | MAXXECUPRO-C1-K1 | 0.5 | no route | Injector 1 (INJ1) | — | |
| W33 | OEM-B-4 | MAXXECUPRO-C1-K2 | 0.5 | no route | Injector 2 (INJ2) | — | |
| W34 | OEM-B-3 | MAXXECUPRO-C1-M1 | 0.5 | no route | Injector 3 (INJ3) | — | |
| W35 | OEM-B-2 | MAXXECUPRO-C1-M2 | 0.5 | no route | Injector 4 (INJ4) | — | |
| W36 | OEM-E-9 | MAXXECUPRO-C3-K3 | 0.5 | no route | Ignition switch signal (IG1) | — | |
| W37 | OEM-E-7 | MAXXECUPRO-C1-B4 | 0.5 | no route | Main relay control (MRLY) | — | |
| W38 | OEM-B-6 | MAXXECUPRO-C1-C4 | 0.5 | no route | Radiator fan control (FANC) | — | |
| W39 | OEM-E-1 | MAXXECUPRO-C1-D4 | 0.5 | no route | Immobilizer fuel pump relay (IMO FPR) | — | |
| W40 | OEM-E-18 | MAXXECUPRO-C1-E4 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W41 | OEM-E-8 | MAXXECUPRO-C1-A1 | 0.5 | no route | A/F sensor heater relay control (AFSHTCR) | — | |
| W42 | OEM-E-6 | MAXXECUPRO-C1-D1 | 0.5 | no route | Secondary O2 heater control (SO2SHTC) | — | |
| W43 | OEM-A-1 | MAXXECUPRO-C3-E1 | 0.5 | no route | A/F sensor heater control (AFSHTC) | — | |
| W44 | OEM-A-12 | MAXXECUPRO-C1-B1 | 0.5 | no route | Idle air control valve (IACV) | — | |
| W45 | OEM-B-15 | MAXXECUPRO-C1-C1 | 0.5 | no route | VTEC solenoid (VTS) | — | |
| W46 | OEM-B-1 | MAXXECUPRO-C1-A4 | 0.5 | no route | VTC oil control solenoid (+) | — | |
| W47 | OEM-B-18 | MAXXECUPRO-C4-G1 | 0.5 | no route | Alternator control (ALTC) | — | |
| W48 | OEM-B-21 | MAXXECUPRO-C4-G2 | 0.5 | no route | Evap canister purge valve (PCS) | — | |
| W49 | OEM-B-23 | MAXXECUPRO-C4-G3 | 0.5 | no route | VTC oil control solenoid (-) | — | |
| W50 | OEM-B-7 | MAXXECUPRO-C4-G4 | 0.5 | no route | Reverse lockout solenoid (RVS, Type-S) | — | |
| W51 | OEM-E-21 | MAXXECUPRO-C4-H1 | 0.5 | no route | Evap vent shut valve (VSV) | — | |
| W52 | OEM-E-31 | MAXXECUPRO-C4-H2 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W53 | OEM-E-26 | MAXXECUPRO-C4-H3 | 0.5 | no route | Engine speed pulse / tacho (NEP) | — | |
| W54 | OEM-A-6 | MAXXECUPRO-C1-G3 | 0.5 | no route | A/F sensor + (AFS+, wideband Ip) | — | |
| W55 | OEM-A-16 | MAXXECUPRO-C1-F4 | 0.5 | no route | A/F sensor - (AFS-, wideband Vs) | — | |
| W56 | OEM-A-19 | MAXXECUPRO-C1-J3 | 0.5 | no route | Manifold absolute pressure (MAP) | — | |
| W57 | OEM-A-15 | MAXXECUPRO-C1-G2 | 0.5 | no route | Throttle position sensor (TPS) | — | |
| W58 | OEM-E-2 | MAXXECUPRO-C1-J4 | 0.5 | no route | Secondary heated O2 sensor (SHO2S) | — | |
| W59 | OEM-B-8 | MAXXECUPRO-C1-J1 | 0.5 | no route | Coolant temp sensor (ECT) | — | |
| W60 | OEM-B-17 | MAXXECUPRO-C1-J2 | 0.5 | no route | Intake air temp sensor (IAT) | — | |
| W61 | OEM-B-13 | MAXXECUPRO-C3-C3 | 0.5 | no route | Alternator FR signal (ALTF) | — | |
| W62 | OEM-E-14 | MAXXECUPRO-C3-D1 | 0.5 | no route | Fuel tank pressure sensor (FTP) | — | |
| W63 | OEM-E-15 | MAXXECUPRO-C3-D2 | 0.5 | no route | Electrical load detector (ELD) | — | |
| W64 | OEM-A-18 | MAXXECUPRO-C1-K3 | 0.5 | no route | Vehicle speed sensor (VSS, M/T) | — | |
| W65 | OEM-B-10 | MAXXECUPRO-C1-K4 | 0.5 | no route | Alternator L signal (ALTL) | — | |
| W66 | OEM-B-9 | MAXXECUPRO-C3-A3 | 0.5 | no route | VTEC oil pressure switch (VTPSW) | — | |
| W67 | OEM-E-16 | MAXXECUPRO-C3-A4 | 0.5 | no route | Power steering pressure switch (PSPSW) | — | |
| W68 | OEM-E-20 | MAXXECUPRO-C4-D3 | 0.5 | no route | Brake switch / interlock (2WBS) | — | |
| W69 | OEM-E-22 | MAXXECUPRO-C4-D4 | 0.5 | no route | Brake switch (BKSW) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 1318682-6 | TE | K-series ECU harness plug A (040-3 HD plug assy, 31P) | 1.000 | ea |
| connector | 353029-1 | TE | K-series ECU harness plug B (040 H/D-3 plug HSG assy, 24P) | 1.000 | ea |
| connector | 353826-1 | TE | K-series ECU harness plug E (040 HD 31P plug HSG assy-B, 31P) | 1.000 | ea |
| terminal | 316836-1 | TE | Multilock 040 III HD socket, tin, 22–18 AWG (0.3–0.85 mm²) | 58.000 | 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 |
|---|---|---|---|
| error | REQUIRED_UNMAPPED | OEM-A-26 | Required OEM function "Camshaft position B (CMP B)" (trigger_in) is not connected to the new ECU. |
| warn | DATASET_GAP | RSX ECU A | 5 of 31 cavities on RSX ECU A have no pin data (8,13,14,17,31). Anything there is invisible to these checks. |
| warn | DATASET_GAP | RSX ECU B | 8 of 24 cavities on RSX ECU B have no pin data (11,12,14,16,19,20,22,24). Anything there is invisible to these checks. |
| warn | DATASET_GAP | RSX ECU E | 8 of 31 cavities on RSX ECU E have no pin data (10,11,12,13,17,19,25,28). Anything there is invisible to these checks. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-A1 | MAXXECUPRO-C1-A1 "GPO 5" drives OEM-E-8 A/F sensor heater relay control (AFSHTCR) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-B1 | MAXXECUPRO-C1-B1 "GPO 6" drives OEM-A-12 Idle air control valve (IACV) (load 1.0 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-B4 | MAXXECUPRO-C1-B4 "GPO 1" drives OEM-E-7 Main relay control (MRLY) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-C1 | MAXXECUPRO-C1-C1 "GPO 7" drives OEM-B-15 VTEC solenoid (VTS) (load 1.0 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-C4 | MAXXECUPRO-C1-C4 "GPO 2" drives OEM-B-6 Radiator fan control (FANC) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-D4 | MAXXECUPRO-C1-D4 "GPO 3" drives OEM-E-1 Immobilizer fuel pump relay (IMO FPR) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-E4 | MAXXECUPRO-C1-E4 "GPO 4" drives OEM-E-18 A/C clutch relay (ACC) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | OEM-E-26 ↔ MAXXECUPRO-C4-H3 | OEM-E-26 "Engine speed pulse / tacho (NEP)" [tacho_out] is wired to MAXXECUPRO-C4-H3 "GPO 29" [low_side_out]. Tacho as a low-side output: check the tach needs a pull-up. |
| info | UNMAPPED | OEM | 6 optional OEM pins are not mapped: OEM-A-22 A/F sensor heater supply (AFSHTC+); OEM-E-23 K-line (diagnostic); OEM-E-24 Multiplex communication (SEFMJ); OEM-E-27 Immobilizer code (IMOCD); OEM-E-29 Service check signal (SCS); OEM-E-30 Write enable signal (WEN) |
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. Open items: - OEM-A 26: Camshaft position B (CMP B): no free cam_hall/cam_vr/frequency_in input on MaxxECU MaxxECU PRO Not wired: - OEM-A 22: A/F sensor heater supply (AFSHTC+): no free heater_feed on MaxxECU MaxxECU PRO - OEM-E 23: K-line (diagnostic): no free k_line on MaxxECU MaxxECU PRO - OEM-E 24: Multiplex communication (SEFMJ): no free k_line on MaxxECU MaxxECU PRO - OEM-E 27: Immobilizer code (IMOCD): not classified in the library; wire by hand - OEM-E 29: Service check signal (SCS): not classified in the library; wire by hand - OEM-E 30: Write enable signal (WEN): not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Link: CIVICLink K20X (HC20X) DC5 installation manual | https://linkecu.com/documentation/237-4000%20DC5.pdf | archive | 2026-10-05 | 8a1a71301571 |
| 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 |
| 3 | forum | FFS TechNet: K-series 02-06 RSX ECU pin diagram (Helm) | https://ff-squad.com/technet2/k-series-02-06-rsx-ecu-pin-diagram/ | archive | 2026-10-05 | b2b85002666e |