Lexus LS400 1989-97 (1UZ-FE non-VVTi) → MaxxECU MaxxECU PRO REV10+ (auto)
Lexus LS400 1989-97 (1UZ-FE non-VVTi) — MaxxECU — MaxxECU PRO
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-12
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 | 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 | 67 wires · 11 connectors · 0 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-A-12 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-A-13 | 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-22 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-D-13 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-D-26 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | MAXXECUPRO-C1-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MAXXECUPRO-C2-H1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | MAXXECUPRO-C2-H2 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | MAXXECUPRO-C2-H3 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | MAXXECUPRO-C3-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-A-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-C-15 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-C-16 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-A-11 | MAXXECUPRO-C1-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-C-8 | MAXXECUPRO-C1-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-C-7 | MAXXECUPRO-C1-H4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-C-3 | MAXXECUPRO-C4-F2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-C-11 | MAXXECUPRO-C4-F3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-C-5 | MAXXECUPRO-C1-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-C-13 | MAXXECUPRO-C1-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-D-12 | MAXXECUPRO-C1-K1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-D-11 | MAXXECUPRO-C1-K2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-D-24 | MAXXECUPRO-C1-M1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-D-25 | MAXXECUPRO-C1-M2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-1 | MAXXECUPRO-C3-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-4 | MAXXECUPRO-C1-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-5 | MAXXECUPRO-C1-F1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-B-4 | MAXXECUPRO-C1-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B-6 | MAXXECUPRO-C1-C4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-B-7 | MAXXECUPRO-C1-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-D-19 | MAXXECUPRO-C1-D1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-D-20 | MAXXECUPRO-C3-E1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-D-17 | MAXXECUPRO-C1-E4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-D-8 | MAXXECUPRO-C1-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-D-7 | MAXXECUPRO-C1-B1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-D-6 | MAXXECUPRO-C1-C1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-D-5 | MAXXECUPRO-C1-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-B-5 | MAXXECUPRO-C4-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-B-8 | MAXXECUPRO-C4-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-D-21 | MAXXECUPRO-C4-G3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-D-22 | MAXXECUPRO-C4-G4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-D-4 | MAXXECUPRO-C4-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-A-17 | MAXXECUPRO-C1-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-A-6 | MAXXECUPRO-C1-J4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-B-11 | MAXXECUPRO-C3-C3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-B-24 | MAXXECUPRO-C3-D1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-A-16 | MAXXECUPRO-C1-F2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-A-7 | MAXXECUPRO-C1-J1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-C-2 | MAXXECUPRO-C1-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-C-10 | MAXXECUPRO-C1-K4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-A-19 | MAXXECUPRO-C3-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-A-9 | MAXXECUPRO-C3-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-A-20 | MAXXECUPRO-C3-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-A-14 | MAXXECUPRO-C3-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-A-2 | MAXXECUPRO-C4-D3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-B-19 | MAXXECUPRO-C4-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-B-20 | MAXXECUPRO-C4-E1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-B-23 | MAXXECUPRO-C4-E2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-C-1 | MAXXECUPRO-C3-D2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-C-4 | MAXXECUPRO-C4-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-C-12 | MAXXECUPRO-C4-A4 | 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-G1 | MAXXECUPRO-C1-H1 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 2 | MAXXECUPRO-C1-G1 | MAXXECUPRO-C1-L4 | open (OL) | 5 V sensor reference must not touch power ground | |
| 3 | MAXXECUPRO-C1-M4 | MAXXECUPRO-C1-H1 | open (OL) | +12 V supply must not touch sensor ground | |
| 4 | MAXXECUPRO-C1-M4 | MAXXECUPRO-C1-L4 | open (OL) | +12 V supply must not touch power ground | |
| 5 | MAXXECUPRO-C1-G1 | MAXXECUPRO-C1-M4 | open (OL) | 5 V sensor reference must not touch +12 V supply |
If any reading doesn't match, stop and get help before powering up.
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 | — | W40 | — | 0.5 | OEM-D-8 | — | — | — |
| A2 | IGN 1 | — | W25 | — | 0.5 | OEM-C-5 | — | — | — |
| A3 | IGN 2 | — | W26 | — | 0.5 | OEM-C-13 | — | — | — |
| A4 | GPO 8/TACHO | — | W43 | — | 0.5 | OEM-D-5 | — | — | — |
| B1 | GPO 6 | — | W41 | — | 0.5 | OEM-D-7 | — | — | — |
| B2 | IGN 3 | — | — | — | — | — | — | — | — |
| B3 | IGN 4 | — | — | — | — | — | — | — | — |
| B4 | GPO 1 | — | W34 | — | 0.5 | OEM-B-4 | — | — | — |
| C1 | GPO 7 | — | W42 | — | 0.5 | OEM-D-6 | — | — | — |
| C2 | IGN 5 | — | — | — | — | — | — | — | — |
| C3 | IGN 6 | — | — | — | — | — | — | — | — |
| C4 | GPO 2 | — | W35 | — | 0.5 | OEM-B-6 | — | — | — |
| D1 | WBO2 Heater- | — | W37 | — | 0.5 | OEM-D-19 | — | — | — |
| D2 | IGN 7 | — | — | — | — | — | — | — | — |
| D3 | IGN 8 | — | — | — | — | — | — | — | — |
| D4 | GPO 3 | — | W36 | — | 0.5 | OEM-B-7 | — | — | — |
| E1 | CAN H | — | — | — | — | — | — | — | — |
| E2 | CAN L | — | — | — | — | — | — | — | — |
| E3 | GND Shield | — | — | — | — | — | — | — | — |
| E4 | GPO 4 | — | W39 | — | 0.5 | OEM-D-17 | — | — | — |
| F1 | CLT | — | W33 | — | 0.5 | OEM-A-5 | — | — | — |
| F2 | IAT | — | W53 | — | 0.5 | OEM-A-16 | — | — | — |
| F3 | WBO2 VREF | — | — | — | — | — | — | — | — |
| F4 | WBO2 VS | — | — | — | — | — | — | — | — |
| G1 | +5V sensor supply | — | W20 | — | 0.5 | OEM-A-11 | — | — | — |
| G2 | TPS/AIN | — | W32 | — | 0.5 | OEM-A-4 | — | — | — |
| G3 | WBO2 IP | — | — | — | — | — | — | — | — |
| G4 | WBO2 RCAL | — | — | — | — | — | — | — | — |
| H1 | Sensor GND | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| H2 | Trigger GND | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| H3 | TRIGGER | — | W21 | — | 0.5 | OEM-C-8 | — | — | — |
| H4 | HOME | — | W22 | — | 0.5 | OEM-C-7 | — | — | — |
| J1 | AIN 1 (temperature) | — | W54 | — | 0.5 | OEM-A-7 | — | — | — |
| J2 | AIN 2 (temperature) | — | — | — | — | — | — | — | — |
| J3 | AIN 3 (0-5V) | — | W49 | — | 0.5 | OEM-A-17 | — | — | — |
| J4 | AIN 4 (0-5V) | — | W50 | — | 0.5 | OEM-A-6 | — | — | — |
| K1 | INJ 1 | — | W27 | — | 0.5 | OEM-D-12 | — | — | — |
| K2 | INJ 2 | — | W28 | — | 0.5 | OEM-D-11 | — | — | — |
| K3 | DIN/VR 1 | — | W55 | — | 0.5 | OEM-C-2 | — | — | — |
| K4 | DIN/VR 2 | — | W56 | — | 0.5 | OEM-C-10 | — | — | — |
| L1 | INJ 8 | — | — | — | — | — | — | — | — |
| L2 | INJ 7 | — | — | — | — | — | — | — | — |
| L3 | INJ 6 | — | — | — | — | — | — | — | — |
| L4 | Engine GND | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJ 3 | — | W29 | — | 0.5 | OEM-D-24 | — | — | — |
| M2 | INJ 4 | — | W30 | — | 0.5 | OEM-D-25 | — | — | — |
| 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 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| H2 | Engine ground 3 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| H3 | Engine ground 3 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
MAXXECUPRO-C3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | DIN/VR 4 | — | W57 | — | 0.5 | OEM-A-19 | — | — | — |
| A2 | DIN/VR 5 | — | W58 | — | 0.5 | OEM-A-9 | — | — | — |
| A3 | DIN 6 (SWITCH) | — | W59 | — | 0.5 | OEM-A-20 | — | — | — |
| A4 | DIN 7 (SWITCH) | — | W60 | — | 0.5 | OEM-A-14 | — | — | — |
| 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 | — | — | — | — | — | — | — | — |
| C3 | ANALOG IN 5 (0-5V) | — | W51 | — | 0.5 | OEM-B-11 | — | — | — |
| C4 | GPO 19 (12V) | — | — | — | — | — | — | — | — |
| D1 | ANALOG IN 6 (0-5V) | — | W52 | — | 0.5 | OEM-B-24 | — | — | — |
| D2 | ANALOG IN 7 (0-5V) | — | W65 | — | 0.5 | OEM-C-1 | — | — | — |
| D3 | ANALOG IN 8 (0-5V) | — | — | — | — | — | — | — | — |
| D4 | GPO 20 (12V) | — | — | — | — | — | — | — | — |
| E1 | GPO 10/WBO2 2 HTR | — | W38 | — | 0.5 | OEM-D-20 | — | — | — |
| 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 | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| J3 | SENSOR GND | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| J4 | GPO 17 (12V) | — | — | — | — | — | — | — | — |
| K1 | INJECTOR OUT 10 | — | — | — | — | — | — | — | — |
| K2 | INJECTOR OUT 9 | — | — | — | — | — | — | — | — |
| K3 | KEY IN 12V | — | W31 | — | 0.5 | OEM-A-1 | — | — | — |
| K4 | GPO 18 (12V) | — | — | — | — | — | — | — | — |
| L1 | INJECTOR OUT 11 | — | — | — | — | — | — | — | — |
| L2 | GPO 12/MOTOR 1 + | — | — | — | — | — | — | — | — |
| L3 | GPO 11/MOTOR 1 - | — | — | — | — | — | — | — | — |
| L4 | ENGINE GROUND 2 | — | W12 | — | 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 | — | W66 | — | 0.5 | OEM-C-4 | — | — | — |
| A4 | 0-5V out 2 | — | W67 | — | 0.5 | OEM-C-12 | — | — | — |
| 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) | — | W61 | — | 0.5 | OEM-A-2 | — | — | — |
| D4 | DIN 9 (switch) | — | W62 | — | 0.5 | OEM-B-19 | — | — | — |
| E1 | DIN 10 (switch) | — | W63 | — | 0.5 | OEM-B-20 | — | — | — |
| E2 | DIN 11 (switch) | — | W64 | — | 0.5 | OEM-B-23 | — | — | — |
| E3 | +5V sensor supply 3 | — | — | — | — | — | — | — | — |
| E4 | 5-10V sensor supply | — | — | — | — | — | — | — | — |
| F1 | GPO 23-30 flyback | — | — | — | — | — | — | — | — |
| F2 | Knock 1 | — | W23 | — | 0.5 | OEM-C-3 | — | — | — |
| F3 | Knock 2 | — | W24 | — | 0.5 | OEM-C-11 | — | — | — |
| F4 | Sensor GND3 / knock ground | — | — | — | — | — | — | — | — |
| G1 | GPO 23 | — | W44 | — | 0.5 | OEM-B-5 | — | — | — |
| G2 | GPO 24 | — | W45 | — | 0.5 | OEM-B-8 | — | — | — |
| G3 | GPO 25 | — | W46 | — | 0.5 | OEM-D-21 | — | — | — |
| G4 | GPO 26 | — | W47 | — | 0.5 | OEM-D-22 | — | — | — |
| H1 | GPO 27 | — | W48 | — | 0.5 | OEM-D-4 | — | — | — |
| H2 | GPO 28 | — | — | — | — | — | — | — | — |
| H3 | GPO 29 | — | — | — | — | — | — | — | — |
| H4 | GPO 30 | — | — | — | — | — | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition switch (IGSW) | — | W31 | — | 0.5 | MAXXECUPRO-C3-K3 | — | — | — |
| 11 | Sensor supply +5V (VC) | — | W20 | — | 0.5 | MAXXECUPRO-C1-G1 | — | — | — |
| 12 | EFI main relay (B+) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 13 | EFI main relay (B1+) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 14 | Neutral start switch (NSW) | — | W60 | — | 0.5 | MAXXECUPRO-C3-A4 | — | — | — |
| 16 | Intake air temperature (THA) | — | W53 | — | 0.5 | MAXXECUPRO-C1-F2 | — | — | — |
| 17 | O2 right front (OXR1) | — | W49 | — | 0.5 | MAXXECUPRO-C1-J3 | — | — | — |
| 18 | Sensor ground (E2) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Vehicle speed (SPD) | — | W57 | — | 0.5 | MAXXECUPRO-C3-A1 | — | — | — |
| 2 | Starter signal (STA) | — | W61 | — | 0.5 | MAXXECUPRO-C4-D3 | — | — | — |
| 20 | Diagnostic test 2 (TE2) | — | W59 | — | 0.5 | MAXXECUPRO-C3-A3 | — | — | — |
| 22 | Power ground (E1) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Throttle position (VTA1) | — | W32 | — | 0.5 | MAXXECUPRO-C1-G2 | — | — | — |
| 5 | Coolant temperature (THW) | — | W33 | — | 0.5 | MAXXECUPRO-C1-F1 | — | — | — |
| 6 | O2 left front (OXL1) | — | W50 | — | 0.5 | MAXXECUPRO-C1-J4 | — | — | — |
| 7 | EGR temperature sensor | — | W54 | — | 0.5 | MAXXECUPRO-C1-J1 | — | — | — |
| 8 | Knock/shield (KS) | — | — | — | — | — | — | — | — |
| 9 | Diagnostic test 1 (TE1) | — | W58 | — | 0.5 | MAXXECUPRO-C3-A2 | — | — | — |
OEM-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 11 | O2 right rear (OXR2) | — | W51 | — | 0.5 | MAXXECUPRO-C3-C3 | — | — | — |
| 19 | Stop light switch (BK) | — | W62 | — | 0.5 | MAXXECUPRO-C4-D4 | — | — | — |
| 20 | A/T kickdown switch (KD) | — | W63 | — | 0.5 | MAXXECUPRO-C4-E1 | — | — | — |
| 23 | A/C request (AC) | — | W64 | — | 0.5 | MAXXECUPRO-C4-E2 | — | — | — |
| 24 | O2 left rear (OXL2) | — | W52 | — | 0.5 | MAXXECUPRO-C3-D1 | — | — | — |
| 26 | Battery constant (BATT) | — | — | — | — | — | — | — | — |
| 4 | EFI main relay control (MREL) | — | W34 | — | 0.5 | MAXXECUPRO-C1-B4 | — | — | — |
| 5 | Check-engine lamp (W) | — | W44 | — | 0.5 | MAXXECUPRO-C4-G1 | — | — | — |
| 6 | Fuel pump relay (FPR) | — | W35 | — | 0.5 | MAXXECUPRO-C1-C4 | — | — | — |
| 7 | A/C clutch relay (ACMG) | — | W36 | — | 0.5 | MAXXECUPRO-C1-D4 | — | — | — |
| 8 | Fuel pump control (FC) | — | W45 | — | 0.5 | MAXXECUPRO-C4-G2 | — | — | — |
OEM-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | TPS idle switch (IDL) | — | W65 | — | 0.5 | MAXXECUPRO-C3-D2 | — | — | — |
| 10 | Igniter 2 feedback (IGF2) | — | W56 | — | 0.5 | MAXXECUPRO-C1-K4 | — | — | — |
| 11 | Knock sensor 2 (KNK2) | — | W24 | — | 0.5 | MAXXECUPRO-C4-F3 | — | — | — |
| 12 | Check connector VF2 | — | W67 | — | 0.5 | MAXXECUPRO-C4-A4 | — | — | — |
| 13 | Ignition 2 (IGT2) | — | W26 | — | 0.5 | MAXXECUPRO-C1-A3 | — | — | — |
| 15 | Cam sensor ground (G-) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Crank sensor - (NE-) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Igniter 1 feedback (IGF1) | — | W55 | — | 0.5 | MAXXECUPRO-C1-K3 | — | — | — |
| 3 | Knock sensor 1 (KNK1) | — | W23 | — | 0.5 | MAXXECUPRO-C4-F2 | — | — | — |
| 4 | Check connector VF1 | — | W66 | — | 0.5 | MAXXECUPRO-C4-A3 | — | — | — |
| 5 | Ignition 1 (IGT1) | — | W25 | — | 0.5 | MAXXECUPRO-C1-A2 | — | — | — |
| 6 | Cam sensor 2 + (G2+) | — | — | — | — | — | — | — | — |
| 7 | Cam sensor 1 + (G1+) | — | W22 | — | 0.5 | MAXXECUPRO-C1-H4 | — | — | — |
| 8 | Crank sensor + (NE+) | — | W21 | — | 0.5 | MAXXECUPRO-C1-H3 | — | — | — |
OEM-D
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 11 | Injector 2&8 (#20) | — | W28 | — | 0.5 | MAXXECUPRO-C1-K2 | — | — | — |
| 12 | Injector 1&7 (#10) | — | W27 | — | 0.5 | MAXXECUPRO-C1-K1 | — | — | — |
| 13 | Power ground (E01) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 17 | Cold start injector 1 (STJ1) | — | W39 | — | 0.5 | MAXXECUPRO-C1-E4 | — | — | — |
| 19 | O2 heater 2 (HT2) | — | W37 | — | 0.5 | MAXXECUPRO-C1-D1 | — | — | — |
| 20 | O2 heater 1 (HT1) | — | W38 | — | 0.5 | MAXXECUPRO-C3-E1 | — | — | — |
| 21 | EGR solenoid | — | W46 | — | 0.5 | MAXXECUPRO-C4-G3 | — | — | — |
| 22 | Fuel pressure-up VSV (PR) | — | W47 | — | 0.5 | MAXXECUPRO-C4-G4 | — | — | — |
| 24 | Injector 3&5 (#40) | — | W29 | — | 0.5 | MAXXECUPRO-C1-M1 | — | — | — |
| 25 | Injector 4&6 (#30) | — | W30 | — | 0.5 | MAXXECUPRO-C1-M2 | — | — | — |
| 26 | Power ground (E02) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Cold start injector (STJ) | — | W48 | — | 0.5 | MAXXECUPRO-C4-H1 | — | — | — |
| 5 | ISC stepper coil 4 (ISC4) | — | W43 | — | 0.5 | MAXXECUPRO-C1-A4 | — | — | — |
| 6 | ISC stepper coil 3 (ISC3) | — | W42 | — | 0.5 | MAXXECUPRO-C1-C1 | — | — | — |
| 7 | ISC stepper coil 2 (ISC2) | — | W41 | — | 0.5 | MAXXECUPRO-C1-B1 | — | — | — |
| 8 | ISC stepper coil 1 (ISC1) | — | W40 | — | 0.5 | MAXXECUPRO-C1-A1 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-A-18 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-C-15 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-C-16 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | MAXXECUPRO-C1-H1 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MAXXECUPRO-C1-H2 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | MAXXECUPRO-C3-J2 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | MAXXECUPRO-C3-J3 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-12 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-A-13 | — | — | — |
| 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-22 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-D-13 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-D-26 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | MAXXECUPRO-C1-L4 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MAXXECUPRO-C2-H1 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MAXXECUPRO-C2-H2 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | MAXXECUPRO-C2-H3 | — | — | — |
| 1 | — | — | W12 | — | 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 | Ignition switch (IGSW) | digital_in | MAXXECUPRO-C3-K3 | KEY IN 12V | digital_in | single_source | |
| OEM-A-11 | Sensor supply +5V (VC) | vref | MAXXECUPRO-C1-G1 | +5V sensor supply | vref | single_source | |
| OEM-A-12 | EFI main relay (B+) | power_in | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | single_source | |
| OEM-A-13 | EFI main relay (B1+) | power_in | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | single_source | |
| OEM-A-14 | Neutral start switch (NSW) | digital_in | MAXXECUPRO-C3-A4 | DIN 7 (SWITCH) | digital_in | single_source | |
| OEM-A-16 | Intake air temperature (THA) | temp_in | MAXXECUPRO-C1-F2 | IAT | temp_in | single_source | |
| OEM-A-17 | O2 right front (OXR1) | lambda_nb_in | MAXXECUPRO-C1-J3 | AIN 3 (0-5V) | analog_in | single_source | |
| OEM-A-18 | Sensor ground (E2) | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-A-19 | Vehicle speed (SPD) | digital_in | MAXXECUPRO-C3-A1 | DIN/VR 4 | digital_in | single_source | |
| OEM-A-2 | Starter signal (STA) | digital_in | MAXXECUPRO-C4-D3 | DIN 8 (switch) | digital_in | single_source | |
| OEM-A-20 | Diagnostic test 2 (TE2) | digital_in | MAXXECUPRO-C3-A3 | DIN 6 (SWITCH) | digital_in | single_source | |
| OEM-A-22 | Power ground (E1) | 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 | single_source | |
| OEM-A-4 | Throttle position (VTA1) | analog_in | MAXXECUPRO-C1-G2 | TPS/AIN | analog_in | single_source | |
| OEM-A-5 | Coolant temperature (THW) | temp_in | MAXXECUPRO-C1-F1 | CLT | temp_in | single_source | |
| OEM-A-6 | O2 left front (OXL1) | lambda_nb_in | MAXXECUPRO-C1-J4 | AIN 4 (0-5V) | analog_in | single_source | |
| OEM-A-7 | EGR temperature sensor | temp_in | MAXXECUPRO-C1-J1 | AIN 1 (temperature) | temp_in | single_source | |
| OEM-A-8 | Knock/shield (KS) | knock_in | — | — | — | single_source | |
| OEM-A-9 | Diagnostic test 1 (TE1) | digital_in | MAXXECUPRO-C3-A2 | DIN/VR 5 | digital_in | single_source | |
| OEM-B-11 | O2 right rear (OXR2) | lambda_nb_in | MAXXECUPRO-C3-C3 | ANALOG IN 5 (0-5V) | analog_in | single_source | |
| OEM-B-19 | Stop light switch (BK) | digital_in | MAXXECUPRO-C4-D4 | DIN 9 (switch) | digital_in | single_source | |
| OEM-B-20 | A/T kickdown switch (KD) | digital_in | MAXXECUPRO-C4-E1 | DIN 10 (switch) | digital_in | single_source | |
| OEM-B-23 | A/C request (AC) | digital_in | MAXXECUPRO-C4-E2 | DIN 11 (switch) | digital_in | single_source | |
| OEM-B-24 | O2 left rear (OXL2) | lambda_nb_in | MAXXECUPRO-C3-D1 | ANALOG IN 6 (0-5V) | analog_in | single_source | |
| OEM-B-26 | Battery constant (BATT) | power_in | — | — | — | single_source | |
| OEM-B-4 | EFI main relay control (MREL) | low_side_out | MAXXECUPRO-C1-B4 | GPO 1 | low_side_out | single_source | |
| OEM-B-5 | Check-engine lamp (W) | low_side_out | MAXXECUPRO-C4-G1 | GPO 23 | low_side_out | single_source | |
| OEM-B-6 | Fuel pump relay (FPR) | low_side_out | MAXXECUPRO-C1-C4 | GPO 2 | low_side_out | single_source | |
| OEM-B-7 | A/C clutch relay (ACMG) | low_side_out | MAXXECUPRO-C1-D4 | GPO 3 | low_side_out | single_source | |
| OEM-B-8 | Fuel pump control (FC) | low_side_out | MAXXECUPRO-C4-G2 | GPO 24 | low_side_out | single_source | |
| OEM-C-1 | TPS idle switch (IDL) | digital_in | MAXXECUPRO-C3-D2 | ANALOG IN 7 (0-5V) | analog_in | single_source | |
| OEM-C-10 | Igniter 2 feedback (IGF2) | digital_in | MAXXECUPRO-C1-K4 | DIN/VR 2 | digital_in | single_source | |
| OEM-C-11 | Knock sensor 2 (KNK2) | knock_in | MAXXECUPRO-C4-F3 | Knock 2 | knock_in | single_source | |
| OEM-C-12 | Check connector VF2 | analog_out | MAXXECUPRO-C4-A4 | 0-5V out 2 | analog_out | single_source | |
| OEM-C-13 | Ignition 2 (IGT2) | ignition_out | MAXXECUPRO-C1-A3 | IGN 2 | ignition_out | single_source | |
| OEM-C-15 | Cam sensor ground (G-) | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-C-16 | Crank sensor - (NE-) | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-C-2 | Igniter 1 feedback (IGF1) | digital_in | MAXXECUPRO-C1-K3 | DIN/VR 1 | digital_in | single_source | |
| OEM-C-3 | Knock sensor 1 (KNK1) | knock_in | MAXXECUPRO-C4-F2 | Knock 1 | knock_in | single_source | |
| OEM-C-4 | Check connector VF1 | analog_out | MAXXECUPRO-C4-A3 | 0-5V out 1 | analog_out | single_source | |
| OEM-C-5 | Ignition 1 (IGT1) | ignition_out | MAXXECUPRO-C1-A2 | IGN 1 | ignition_out | single_source | |
| OEM-C-6 | Cam sensor 2 + (G2+) | trigger_in | — | — | — | single_source | |
| OEM-C-7 | Cam sensor 1 + (G1+) | trigger_in | MAXXECUPRO-C1-H4 | HOME | trigger_in | single_source | |
| OEM-C-8 | Crank sensor + (NE+) | trigger_in | MAXXECUPRO-C1-H3 | TRIGGER | trigger_in | single_source | |
| OEM-D-11 | Injector 2&8 (#20) | injector_out | MAXXECUPRO-C1-K2 | INJ 2 | injector_out | single_source | |
| OEM-D-12 | Injector 1&7 (#10) | injector_out | MAXXECUPRO-C1-K1 | INJ 1 | injector_out | single_source | |
| OEM-D-13 | Power ground (E01) | 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 | single_source | |
| OEM-D-17 | Cold start injector 1 (STJ1) | low_side_out | MAXXECUPRO-C1-E4 | GPO 4 | low_side_out | single_source | |
| OEM-D-19 | O2 heater 2 (HT2) | low_side_out | MAXXECUPRO-C1-D1 | WBO2 Heater- | low_side_out | single_source | |
| OEM-D-20 | O2 heater 1 (HT1) | low_side_out | MAXXECUPRO-C3-E1 | GPO 10/WBO2 2 HTR | low_side_out | single_source | |
| OEM-D-21 | EGR solenoid | low_side_out | MAXXECUPRO-C4-G3 | GPO 25 | low_side_out | single_source | |
| OEM-D-22 | Fuel pressure-up VSV (PR) | low_side_out | MAXXECUPRO-C4-G4 | GPO 26 | low_side_out | single_source | |
| OEM-D-24 | Injector 3&5 (#40) | injector_out | MAXXECUPRO-C1-M1 | INJ 3 | injector_out | single_source | |
| OEM-D-25 | Injector 4&6 (#30) | injector_out | MAXXECUPRO-C1-M2 | INJ 4 | injector_out | single_source | |
| OEM-D-26 | Power ground (E02) | 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 | single_source | |
| OEM-D-4 | Cold start injector (STJ) | low_side_out | MAXXECUPRO-C4-H1 | GPO 27 | low_side_out | single_source | |
| OEM-D-5 | ISC stepper coil 4 (ISC4) | low_side_out | MAXXECUPRO-C1-A4 | GPO 8/TACHO | low_side_out | single_source | |
| OEM-D-6 | ISC stepper coil 3 (ISC3) | low_side_out | MAXXECUPRO-C1-C1 | GPO 7 | low_side_out | single_source | |
| OEM-D-7 | ISC stepper coil 2 (ISC2) | low_side_out | MAXXECUPRO-C1-B1 | GPO 6 | low_side_out | single_source | |
| OEM-D-8 | ISC stepper coil 1 (ISC1) | low_side_out | MAXXECUPRO-C1-A1 | GPO 5 | low_side_out | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-12 | SP-14V-1 | 0.85 | no route | EFI main relay (B+) | — | |
| W2 | OEM-A-13 | SP-14V-1 | 0.85 | no route | EFI main relay (B1+) | — | |
| 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-22 | SP-GND-1 | 0.85 | no route | Power ground (E1) | — | |
| W6 | OEM-D-13 | SP-GND-1 | 0.85 | no route | Power ground (E01) | — | |
| W7 | OEM-D-26 | SP-GND-1 | 0.85 | no route | Power ground (E02) | — | |
| W8 | SP-GND-1 | MAXXECUPRO-C1-L4 | 0.85 | no route | Engine GND | — | |
| W9 | SP-GND-1 | MAXXECUPRO-C2-H1 | 0.85 | no route | Engine ground 3 | — | |
| W10 | SP-GND-1 | MAXXECUPRO-C2-H2 | 0.85 | no route | Engine ground 3 | — | |
| W11 | SP-GND-1 | MAXXECUPRO-C2-H3 | 0.85 | no route | Engine ground 3 | — | |
| W12 | SP-GND-1 | MAXXECUPRO-C3-L4 | 0.85 | no route | ENGINE GROUND 2 | — | |
| W13 | OEM-A-18 | SP-0V-1 | 0.5 | no route | Sensor ground (E2) | — | |
| W14 | OEM-C-15 | SP-0V-1 | 0.5 | no route | Cam sensor ground (G-) | — | |
| W15 | OEM-C-16 | SP-0V-1 | 0.5 | no route | Crank sensor - (NE-) | — | |
| W16 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | no route | Sensor GND | — | |
| W17 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | no route | Trigger GND | — | |
| W18 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | no route | SENSOR GND | — | |
| W19 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | no route | SENSOR GND | — | |
| W20 | OEM-A-11 | MAXXECUPRO-C1-G1 | 0.5 | no route | Sensor supply +5V (VC) | — | |
| W21 | OEM-C-8 | MAXXECUPRO-C1-H3 | 0.5 | no route | Crank sensor + (NE+) | — | |
| W22 | OEM-C-7 | MAXXECUPRO-C1-H4 | 0.5 | no route | Cam sensor 1 + (G1+) | — | |
| W23 | OEM-C-3 | MAXXECUPRO-C4-F2 | 0.5 | no route | Knock sensor 1 (KNK1) | — | |
| W24 | OEM-C-11 | MAXXECUPRO-C4-F3 | 0.5 | no route | Knock sensor 2 (KNK2) | — | |
| W25 | OEM-C-5 | MAXXECUPRO-C1-A2 | 0.5 | no route | Ignition 1 (IGT1) | — | |
| W26 | OEM-C-13 | MAXXECUPRO-C1-A3 | 0.5 | no route | Ignition 2 (IGT2) | — | |
| W27 | OEM-D-12 | MAXXECUPRO-C1-K1 | 0.5 | no route | Injector 1&7 (#10) | — | |
| W28 | OEM-D-11 | MAXXECUPRO-C1-K2 | 0.5 | no route | Injector 2&8 (#20) | — | |
| W29 | OEM-D-24 | MAXXECUPRO-C1-M1 | 0.5 | no route | Injector 3&5 (#40) | — | |
| W30 | OEM-D-25 | MAXXECUPRO-C1-M2 | 0.5 | no route | Injector 4&6 (#30) | — | |
| W31 | OEM-A-1 | MAXXECUPRO-C3-K3 | 0.5 | no route | Ignition switch (IGSW) | — | |
| W32 | OEM-A-4 | MAXXECUPRO-C1-G2 | 0.5 | no route | Throttle position (VTA1) | — | |
| W33 | OEM-A-5 | MAXXECUPRO-C1-F1 | 0.5 | no route | Coolant temperature (THW) | — | |
| W34 | OEM-B-4 | MAXXECUPRO-C1-B4 | 0.5 | no route | EFI main relay control (MREL) | — | |
| W35 | OEM-B-6 | MAXXECUPRO-C1-C4 | 0.5 | no route | Fuel pump relay (FPR) | — | |
| W36 | OEM-B-7 | MAXXECUPRO-C1-D4 | 0.5 | no route | A/C clutch relay (ACMG) | — | |
| W37 | OEM-D-19 | MAXXECUPRO-C1-D1 | 0.5 | no route | O2 heater 2 (HT2) | — | |
| W38 | OEM-D-20 | MAXXECUPRO-C3-E1 | 0.5 | no route | O2 heater 1 (HT1) | — | |
| W39 | OEM-D-17 | MAXXECUPRO-C1-E4 | 0.5 | no route | Cold start injector 1 (STJ1) | — | |
| W40 | OEM-D-8 | MAXXECUPRO-C1-A1 | 0.5 | no route | ISC stepper coil 1 (ISC1) | — | |
| W41 | OEM-D-7 | MAXXECUPRO-C1-B1 | 0.5 | no route | ISC stepper coil 2 (ISC2) | — | |
| W42 | OEM-D-6 | MAXXECUPRO-C1-C1 | 0.5 | no route | ISC stepper coil 3 (ISC3) | — | |
| W43 | OEM-D-5 | MAXXECUPRO-C1-A4 | 0.5 | no route | ISC stepper coil 4 (ISC4) | — | |
| W44 | OEM-B-5 | MAXXECUPRO-C4-G1 | 0.5 | no route | Check-engine lamp (W) | — | |
| W45 | OEM-B-8 | MAXXECUPRO-C4-G2 | 0.5 | no route | Fuel pump control (FC) | — | |
| W46 | OEM-D-21 | MAXXECUPRO-C4-G3 | 0.5 | no route | EGR solenoid | — | |
| W47 | OEM-D-22 | MAXXECUPRO-C4-G4 | 0.5 | no route | Fuel pressure-up VSV (PR) | — | |
| W48 | OEM-D-4 | MAXXECUPRO-C4-H1 | 0.5 | no route | Cold start injector (STJ) | — | |
| W49 | OEM-A-17 | MAXXECUPRO-C1-J3 | 0.5 | no route | O2 right front (OXR1) | — | |
| W50 | OEM-A-6 | MAXXECUPRO-C1-J4 | 0.5 | no route | O2 left front (OXL1) | — | |
| W51 | OEM-B-11 | MAXXECUPRO-C3-C3 | 0.5 | no route | O2 right rear (OXR2) | — | |
| W52 | OEM-B-24 | MAXXECUPRO-C3-D1 | 0.5 | no route | O2 left rear (OXL2) | — | |
| W53 | OEM-A-16 | MAXXECUPRO-C1-F2 | 0.5 | no route | Intake air temperature (THA) | — | |
| W54 | OEM-A-7 | MAXXECUPRO-C1-J1 | 0.5 | no route | EGR temperature sensor | — | |
| W55 | OEM-C-2 | MAXXECUPRO-C1-K3 | 0.5 | no route | Igniter 1 feedback (IGF1) | — | |
| W56 | OEM-C-10 | MAXXECUPRO-C1-K4 | 0.5 | no route | Igniter 2 feedback (IGF2) | — | |
| W57 | OEM-A-19 | MAXXECUPRO-C3-A1 | 0.5 | no route | Vehicle speed (SPD) | — | |
| W58 | OEM-A-9 | MAXXECUPRO-C3-A2 | 0.5 | no route | Diagnostic test 1 (TE1) | — | |
| W59 | OEM-A-20 | MAXXECUPRO-C3-A3 | 0.5 | no route | Diagnostic test 2 (TE2) | — | |
| W60 | OEM-A-14 | MAXXECUPRO-C3-A4 | 0.5 | no route | Neutral start switch (NSW) | — | |
| W61 | OEM-A-2 | MAXXECUPRO-C4-D3 | 0.5 | no route | Starter signal (STA) | — | |
| W62 | OEM-B-19 | MAXXECUPRO-C4-D4 | 0.5 | no route | Stop light switch (BK) | — | |
| W63 | OEM-B-20 | MAXXECUPRO-C4-E1 | 0.5 | no route | A/T kickdown switch (KD) | — | |
| W64 | OEM-B-23 | MAXXECUPRO-C4-E2 | 0.5 | no route | A/C request (AC) | — | |
| W65 | OEM-C-1 | MAXXECUPRO-C3-D2 | 0.5 | no route | TPS idle switch (IDL) | — | |
| W66 | OEM-C-4 | MAXXECUPRO-C4-A3 | 0.5 | no route | Check connector VF1 | — | |
| W67 | OEM-C-12 | MAXXECUPRO-C4-A4 | 0.5 | no route | Check connector VF2 | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (6)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | REQUIRED_UNMAPPED | OEM-C-6 | Required OEM function "Cam sensor 2 + (G2+)" (trigger_in) is not connected to the new ECU. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-B4 | MAXXECUPRO-C1-B4 "GPO 1" drives OEM-B-4 EFI main relay control (MREL) (load 0.2 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 Fuel pump relay (FPR) (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-B-7 A/C clutch relay (ACMG) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | NET_FAMILY | OEM-C-1 ↔ MAXXECUPRO-C3-D2 | OEM-C-1 "TPS idle switch (IDL)" [digital_in] is wired to MAXXECUPRO-C3-D2 "ANALOG IN 7 (0-5V)" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| info | UNMAPPED | OEM | 1 optional OEM pins are not mapped: OEM-A-8 Knock/shield (KS) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-B-26 | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - OEM-C 6: Cam sensor 2 + (G2+): no free cam_vr/cam_hall/frequency_in input on MaxxECU MaxxECU PRO Not wired: - OEM-B 26: Battery constant (BATT): MaxxECU MaxxECU PRO has no battery-constant input; not needed - OEM-A 8: Knock/shield (KS): no free knock input on MaxxECU MaxxECU PRO
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 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 | community_copy | Lextreme: Adaptronic install for 1UZ-FE (Lexus LS400/SC400) — 4-plug A/B/C/D ECU pin table (1992 LS400) | https://www.lextreme.com/installation-of-an-adaptronic-ecu-for-a-lexus-ls400-sc400-1uzfe-engine/ | — | — | — |