Lexus SC400 1992-97 (1UZ-FE non-VVTi) → MaxxECU MaxxECU GEN2 RACE (auto)
Lexus SC400 1992-97 (1UZ-FE non-VVTi) — MaxxECU — MaxxECU GEN2 RACE
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-11
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 | 60 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 | MAXXECUGEN2R-MX1-25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | MAXXECUGEN2R-MX2-25 | 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 | MAXXECUGEN2R-MX1-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MAXXECUGEN2R-MX2-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | MAXXECUGEN2R-MX3-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-A-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-C-15 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-C-16 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | MAXXECUGEN2R-MX1-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-A-11 | MAXXECUGEN2R-MX1-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-C-8 | MAXXECUGEN2R-MX1-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-C-7 | MAXXECUGEN2R-MX1-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-C-3 | MAXXECUGEN2R-MX2-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-C-11 | MAXXECUGEN2R-MX2-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-C-5 | MAXXECUGEN2R-MX1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-C-13 | MAXXECUGEN2R-MX1-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-D-12 | MAXXECUGEN2R-MX1-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-D-11 | MAXXECUGEN2R-MX1-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-D-24 | MAXXECUGEN2R-MX1-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-D-25 | MAXXECUGEN2R-MX1-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-1 | MAXXECUGEN2R-MX2-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-4 | MAXXECUGEN2R-MX1-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-5 | MAXXECUGEN2R-MX1-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-4 | MAXXECUGEN2R-MX1-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-B-6 | MAXXECUGEN2R-MX1-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-B-7 | MAXXECUGEN2R-MX1-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-D-19 | MAXXECUGEN2R-MX2-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-D-20 | MAXXECUGEN2R-MX3-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-D-17 | MAXXECUGEN2R-MX1-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-D-8 | MAXXECUGEN2R-MX1-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-D-7 | MAXXECUGEN2R-MX2-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-D-6 | MAXXECUGEN2R-MX2-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-D-5 | MAXXECUGEN2R-MX2-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-B-5 | MAXXECUGEN2R-MX3-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-B-8 | MAXXECUGEN2R-MX3-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-D-21 | MAXXECUGEN2R-MX3-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-D-22 | MAXXECUGEN2R-MX3-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-D-4 | MAXXECUGEN2R-MX3-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-17 | MAXXECUGEN2R-MX1-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-6 | MAXXECUGEN2R-MX1-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-B-11 | MAXXECUGEN2R-MX1-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-B-24 | MAXXECUGEN2R-MX2-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-A-16 | MAXXECUGEN2R-MX2-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-A-7 | MAXXECUGEN2R-MX2-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-C-2 | MAXXECUGEN2R-MX1-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-C-10 | MAXXECUGEN2R-MX1-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-A-19 | MAXXECUGEN2R-MX4-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-A-9 | MAXXECUGEN2R-MX4-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-A-20 | MAXXECUGEN2R-MX4-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-A-14 | MAXXECUGEN2R-MX4-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-A-2 | MAXXECUGEN2R-MX2-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-B-19 | MAXXECUGEN2R-MX2-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-B-20 | MAXXECUGEN2R-MX2-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-B-23 | MAXXECUGEN2R-MX2-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-C-1 | MAXXECUGEN2R-MX2-17 | 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 | MAXXECUGEN2R-MX1-12 | MAXXECUGEN2R-MX1-14 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 2 | MAXXECUGEN2R-MX1-12 | MAXXECUGEN2R-MX1-9 | open (OL) | 5 V sensor reference must not touch power ground | |
| 3 | MAXXECUGEN2R-MX1-25 | MAXXECUGEN2R-MX1-14 | open (OL) | +12 V supply must not touch sensor ground | |
| 4 | MAXXECUGEN2R-MX1-25 | MAXXECUGEN2R-MX1-9 | open (OL) | +12 V supply must not touch power ground | |
| 5 | MAXXECUGEN2R-MX1-12 | MAXXECUGEN2R-MX1-25 | 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
MAXXECUGEN2R-MX1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition 1 | — | W20 | — | 0.5 | OEM-C-5 | — | — | — |
| 10 | Digital/VR 1 SIGNAL + | — | W16 | — | 0.5 | OEM-C-8 | — | — | — |
| 11 | Digital/VR 1 SIGNAL - | — | — | — | — | — | — | — | — |
| 12 | Digital/VR 1 POWER SUPPLY | — | W15 | — | 0.5 | OEM-A-11 | — | — | — |
| 13 | Digital/VR 1 SHIELD | — | — | — | — | — | — | — | — |
| 14 | SENSOR GND | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | CAN L | — | — | — | — | — | — | — | — |
| 16 | CAN H | — | — | — | — | — | — | — | — |
| 17 | GP out 5 (GND) | — | W35 | — | 0.5 | OEM-D-8 | — | — | — |
| 18 | Digital/VR 2 SIGNAL + | — | W17 | — | 0.5 | OEM-C-7 | — | — | — |
| 19 | Digital/VR 2 SIGNAL - | — | — | — | — | — | — | — | — |
| 2 | Ignition 2 | — | W21 | — | 0.5 | OEM-C-13 | — | — | — |
| 20 | Digital/VR 2 POWER SUPPLY | — | — | — | — | — | — | — | — |
| 21 | Digital/VR 2 SHIELD | — | — | — | — | — | — | — | — |
| 22 | 5V power supply | — | — | — | — | — | — | — | — |
| 23 | Digital/VR 3 SIGNAL + | — | W50 | — | 0.5 | OEM-C-2 | — | — | — |
| 24 | Digital/VR 4 SIGNAL + | — | W51 | — | 0.5 | OEM-C-10 | — | — | — |
| 25 | 12V supply 1 | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 26 | AIN 1 | — | W27 | — | 0.5 | OEM-A-4 | — | — | — |
| 27 | AIN 2 | — | W28 | — | 0.5 | OEM-A-5 | — | — | — |
| 28 | AIN 3 | — | W44 | — | 0.5 | OEM-A-17 | — | — | — |
| 29 | AIN 4 | — | W45 | — | 0.5 | OEM-A-6 | — | — | — |
| 3 | Ignition 3 | — | — | — | — | — | — | — | — |
| 30 | AIN 5 | — | W46 | — | 0.5 | OEM-B-11 | — | — | — |
| 31 | INJECTOR 1 | — | W22 | — | 0.5 | OEM-D-12 | — | — | — |
| 32 | INJECTOR 2 | — | W23 | — | 0.5 | OEM-D-11 | — | — | — |
| 33 | INJECTOR 3 | — | W24 | — | 0.5 | OEM-D-24 | — | — | — |
| 34 | INJECTOR 4 | — | W25 | — | 0.5 | OEM-D-25 | — | — | — |
| 4 | Ignition 4 | — | — | — | — | — | — | — | — |
| 5 | GP out 1 (GND) | — | W29 | — | 0.5 | OEM-B-4 | — | — | — |
| 6 | GP out 2 (GND) | — | W30 | — | 0.5 | OEM-B-6 | — | — | — |
| 7 | GP out 3 (GND) | — | W31 | — | 0.5 | OEM-B-7 | — | — | — |
| 8 | GP out 4 (GND) | — | W34 | — | 0.5 | OEM-D-17 | — | — | — |
| 9 | Engine gnd | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
MAXXECUGEN2R-MX2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition 5 | — | — | — | — | — | — | — | — |
| 10 | WBO2 Sensor 1 VS | — | — | — | — | — | — | — | — |
| 11 | WBO2 Sensor 1 COM/VREF | — | — | — | — | — | — | — | — |
| 12 | GP OUT 7 / WBO2 Sensor 1 H- | — | W32 | — | 0.5 | OEM-D-19 | — | — | — |
| 13 | AIN 9 | — | W56 | — | 0.5 | OEM-A-2 | — | — | — |
| 14 | AIN 10 | — | W57 | — | 0.5 | OEM-B-19 | — | — | — |
| 15 | AIN 11 | — | W58 | — | 0.5 | OEM-B-20 | — | — | — |
| 16 | AIN 12 | — | W59 | — | 0.5 | OEM-B-23 | — | — | — |
| 17 | AIN 13 | — | W60 | — | 0.5 | OEM-C-1 | — | — | — |
| 18 | WBO2 sensor 1 RCAL | — | — | — | — | — | — | — | — |
| 19 | WBO2 sensor 1 IP | — | — | — | — | — | — | — | — |
| 2 | Ignition 6 | — | — | — | — | — | — | — | — |
| 20 | 12V WBO2 sensor 1 H+ | — | — | — | — | — | — | — | — |
| 21 | WBO2 sensor 1 SHIELD | — | — | — | — | — | — | — | — |
| 22 | AIN 14 | — | — | — | — | — | — | — | — |
| 23 | AIN 15 | — | — | — | — | — | — | — | — |
| 24 | 12V supply 3 | — | W26 | — | 0.5 | OEM-A-1 | — | — | — |
| 25 | 12V supply 2 | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 26 | KNOCK1 SHIELD | — | — | — | — | — | — | — | — |
| 27 | KNOCK 1- | — | — | — | — | — | — | — | — |
| 28 | KNOCK 1+ | — | W18 | — | 0.5 | OEM-C-3 | — | — | — |
| 29 | KNOCK 2 SHIELD | — | — | — | — | — | — | — | — |
| 3 | GP out 6 (GND) | — | W36 | — | 0.5 | OEM-D-7 | — | — | — |
| 30 | KNOCK 2- | — | — | — | — | — | — | — | — |
| 31 | KNOCK 2+ | — | W19 | — | 0.5 | OEM-C-11 | — | — | — |
| 32 | AIN 16 | — | — | — | — | — | — | — | — |
| 33 | INJECTOR 5 | — | W37 | — | 0.5 | OEM-D-6 | — | — | — |
| 34 | INJECTOR 6 | — | W38 | — | 0.5 | OEM-D-5 | — | — | — |
| 4 | AIN 6 | — | W47 | — | 0.5 | OEM-B-24 | — | — | — |
| 5 | AIN 7 | — | W48 | — | 0.5 | OEM-A-16 | — | — | — |
| 6 | AIN 8 | — | W49 | — | 0.5 | OEM-A-7 | — | — | — |
| 7 | GP out 13 (H-BRIDGE 1) | — | — | — | — | — | — | — | — |
| 8 | GP out 14 (H-BRIDGE 1) | — | — | — | — | — | — | — | — |
| 9 | Engine gnd | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
MAXXECUGEN2R-MX3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | GP out 15 (H-BRIDGE 2) | — | — | — | — | — | — | — | — |
| 10 | WBO2 sensor 2 VS | — | — | — | — | — | — | — | — |
| 11 | WBO2 sensor 2 COM/VREF | — | — | — | — | — | — | — | — |
| 12 | GP Out 8 (GND) / WBO2 Sensor 2 H- | — | W33 | — | 0.5 | OEM-D-20 | — | — | — |
| 13 | WBO2 sensor 2 SHIELD | — | — | — | — | — | — | — | — |
| 14 | GP OUT 9 (12V) | — | — | — | — | — | — | — | — |
| 15 | GP OUT 10 (12V) | — | — | — | — | — | — | — | — |
| 16 | GP OUT 11 (12V) | — | — | — | — | — | — | — | — |
| 17 | GP OUT 12 (12V) | — | — | — | — | — | — | — | — |
| 18 | WBO2 sensor 2 RCAL | — | — | — | — | — | — | — | — |
| 19 | WBO2 sensor 2 IP | — | — | — | — | — | — | — | — |
| 2 | GP out 16 (H-BRIDGE 2) | — | — | — | — | — | — | — | — |
| 20 | 12V WBO2 sensor 2 (H+) | — | — | — | — | — | — | — | — |
| 21 | AIN 17 | — | — | — | — | — | — | — | — |
| 22 | AIN 18 | — | — | — | — | — | — | — | — |
| 23 | AIN 19 | — | — | — | — | — | — | — | — |
| 24 | AIN 20 | — | — | — | — | — | — | — | — |
| 25 | AIN 21 | — | — | — | — | — | — | — | — |
| 26 | AIN 22 | — | — | — | — | — | — | — | — |
| 27 | AIN 23 | — | — | — | — | — | — | — | — |
| 28 | AIN 24 | — | — | — | — | — | — | — | — |
| 29 | INJECTOR 7 | — | W39 | — | 0.5 | OEM-B-5 | — | — | — |
| 3 | Ignition 7 | — | — | — | — | — | — | — | — |
| 30 | INJECTOR 8 | — | W40 | — | 0.5 | OEM-B-8 | — | — | — |
| 31 | INJECTOR 9 | — | W41 | — | 0.5 | OEM-D-21 | — | — | — |
| 32 | INJECTOR 10 | — | W42 | — | 0.5 | OEM-D-22 | — | — | — |
| 33 | INJECTOR 11 | — | W43 | — | 0.5 | OEM-D-4 | — | — | — |
| 34 | INJECTOR 12 | — | — | — | — | — | — | — | — |
| 4 | Ignition 8 | — | — | — | — | — | — | — | — |
| 5 | Ignition 9 | — | — | — | — | — | — | — | — |
| 6 | Ignition 10 | — | — | — | — | — | — | — | — |
| 7 | Ignition 11 | — | — | — | — | — | — | — | — |
| 8 | Ignition 12 | — | — | — | — | — | — | — | — |
| 9 | Engine gnd | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
MAXXECUGEN2R-MX4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Digital/VR 5 SHIELD | — | — | — | — | — | — | — | — |
| 10 | EGT 1 + | — | — | — | — | — | — | — | — |
| 11 | EGT 2 + | — | — | — | — | — | — | — | — |
| 12 | EGT 3 + | — | — | — | — | — | — | — | — |
| 13 | EGT 4 + | — | — | — | — | — | — | — | — |
| 14 | EGT 5 + | — | — | — | — | — | — | — | — |
| 15 | EGT 6 + | — | — | — | — | — | — | — | — |
| 16 | EGT 7 + | — | — | — | — | — | — | — | — |
| 17 | EGT 8 + | — | — | — | — | — | — | — | — |
| 18 | EGT 1 - | — | — | — | — | — | — | — | — |
| 19 | EGT 2 - | — | — | — | — | — | — | — | — |
| 2 | Digital/VR 5 SIGNAL - | — | — | — | — | — | — | — | — |
| 20 | EGT 3 - | — | — | — | — | — | — | — | — |
| 21 | EGT 4 - | — | — | — | — | — | — | — | — |
| 22 | EGT 5 - | — | — | — | — | — | — | — | — |
| 23 | EGT 6 - | — | — | — | — | — | — | — | — |
| 24 | EGT 7 - | — | — | — | — | — | — | — | — |
| 25 | EGT 8 - | — | — | — | — | — | — | — | — |
| 26 | Digital/VR 8 SHIELD | — | — | — | — | — | — | — | — |
| 27 | Digital/VR 8 SIGNAL - | — | — | — | — | — | — | — | — |
| 28 | Digital/VR 8 SIGNAL + | — | W55 | — | 0.5 | OEM-A-14 | — | — | — |
| 29 | CAN 2 L | — | — | — | — | — | — | — | — |
| 3 | Digital/VR 5 SIGNAL + | — | W52 | — | 0.5 | OEM-A-19 | — | — | — |
| 30 | CAN 2 H | — | — | — | — | — | — | — | — |
| 31 | INJECTOR 13 | — | — | — | — | — | — | — | — |
| 32 | INJECTOR 14 | — | — | — | — | — | — | — | — |
| 33 | INJECTOR 15 | — | — | — | — | — | — | — | — |
| 34 | INJECTOR 16 | — | — | — | — | — | — | — | — |
| 4 | Digital/VR 6 SHIELD | — | — | — | — | — | — | — | — |
| 5 | Digital/VR 6 SIGNAL - | — | — | — | — | — | — | — | — |
| 6 | Digital/VR 6 SIGNAL + | — | W53 | — | 0.5 | OEM-A-9 | — | — | — |
| 7 | Digital/VR 7 SHIELD | — | — | — | — | — | — | — | — |
| 8 | Digital/VR 7 SIGNAL - | — | — | — | — | — | — | — | — |
| 9 | Digital/VR 7 SIGNAL + | — | W54 | — | 0.5 | OEM-A-20 | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition switch (IGSW) | — | W26 | — | 0.5 | MAXXECUGEN2R-MX2-24 | — | — | — |
| 11 | Sensor supply +5V (VC) | — | W15 | — | 0.5 | MAXXECUGEN2R-MX1-12 | — | — | — |
| 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) | — | W55 | — | 0.5 | MAXXECUGEN2R-MX4-28 | — | — | — |
| 16 | Intake air temperature (THA) | — | W48 | — | 0.5 | MAXXECUGEN2R-MX2-5 | — | — | — |
| 17 | O2 right front (OXR1) | — | W44 | — | 0.5 | MAXXECUGEN2R-MX1-28 | — | — | — |
| 18 | Sensor ground (E2) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Vehicle speed (SPD) | — | W52 | — | 0.5 | MAXXECUGEN2R-MX4-3 | — | — | — |
| 2 | Starter signal (STA) | — | W56 | — | 0.5 | MAXXECUGEN2R-MX2-13 | — | — | — |
| 20 | Diagnostic test 2 (TE2) | — | W54 | — | 0.5 | MAXXECUGEN2R-MX4-9 | — | — | — |
| 22 | Power ground (E1) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Throttle position (VTA1) | — | W27 | — | 0.5 | MAXXECUGEN2R-MX1-26 | — | — | — |
| 5 | Coolant temperature (THW) | — | W28 | — | 0.5 | MAXXECUGEN2R-MX1-27 | — | — | — |
| 6 | O2 left front (OXL1) | — | W45 | — | 0.5 | MAXXECUGEN2R-MX1-29 | — | — | — |
| 7 | EGR temperature sensor | — | W49 | — | 0.5 | MAXXECUGEN2R-MX2-6 | — | — | — |
| 8 | Knock/shield (KS) | — | — | — | — | — | — | — | — |
| 9 | Diagnostic test 1 (TE1) | — | W53 | — | 0.5 | MAXXECUGEN2R-MX4-6 | — | — | — |
OEM-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 11 | O2 right rear (OXR2) | — | W46 | — | 0.5 | MAXXECUGEN2R-MX1-30 | — | — | — |
| 19 | Stop light switch (BK) | — | W57 | — | 0.5 | MAXXECUGEN2R-MX2-14 | — | — | — |
| 20 | A/T kickdown switch (KD) | — | W58 | — | 0.5 | MAXXECUGEN2R-MX2-15 | — | — | — |
| 23 | A/C request (AC) | — | W59 | — | 0.5 | MAXXECUGEN2R-MX2-16 | — | — | — |
| 24 | O2 left rear (OXL2) | — | W47 | — | 0.5 | MAXXECUGEN2R-MX2-4 | — | — | — |
| 26 | Battery constant (BATT) | — | — | — | — | — | — | — | — |
| 4 | EFI main relay control (MREL) | — | W29 | — | 0.5 | MAXXECUGEN2R-MX1-5 | — | — | — |
| 5 | Check-engine lamp (W) | — | W39 | — | 0.5 | MAXXECUGEN2R-MX3-29 | — | — | — |
| 6 | Fuel pump relay (FPR) | — | W30 | — | 0.5 | MAXXECUGEN2R-MX1-6 | — | — | — |
| 7 | A/C clutch relay (ACMG) | — | W31 | — | 0.5 | MAXXECUGEN2R-MX1-7 | — | — | — |
| 8 | Fuel pump control (FC) | — | W40 | — | 0.5 | MAXXECUGEN2R-MX3-30 | — | — | — |
OEM-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | TPS idle switch (IDL) | — | W60 | — | 0.5 | MAXXECUGEN2R-MX2-17 | — | — | — |
| 10 | Igniter 2 feedback (IGF2) | — | W51 | — | 0.5 | MAXXECUGEN2R-MX1-24 | — | — | — |
| 11 | Knock sensor 2 (KNK2) | — | W19 | — | 0.5 | MAXXECUGEN2R-MX2-31 | — | — | — |
| 12 | Check connector VF2 | — | — | — | — | — | — | — | — |
| 13 | Ignition 2 (IGT2) | — | W21 | — | 0.5 | MAXXECUGEN2R-MX1-2 | — | — | — |
| 15 | Cam sensor ground (G-) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Crank sensor - (NE-) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Igniter 1 feedback (IGF1) | — | W50 | — | 0.5 | MAXXECUGEN2R-MX1-23 | — | — | — |
| 3 | Knock sensor 1 (KNK1) | — | W18 | — | 0.5 | MAXXECUGEN2R-MX2-28 | — | — | — |
| 4 | Check connector VF1 | — | — | — | — | — | — | — | — |
| 5 | Ignition 1 (IGT1) | — | W20 | — | 0.5 | MAXXECUGEN2R-MX1-1 | — | — | — |
| 6 | Cam sensor 2 + (G2+) | — | — | — | — | — | — | — | — |
| 7 | Cam sensor 1 + (G1+) | — | W17 | — | 0.5 | MAXXECUGEN2R-MX1-18 | — | — | — |
| 8 | Crank sensor + (NE+) | — | W16 | — | 0.5 | MAXXECUGEN2R-MX1-10 | — | — | — |
OEM-D
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 11 | Injector 2&8 (#20) | — | W23 | — | 0.5 | MAXXECUGEN2R-MX1-32 | — | — | — |
| 12 | Injector 1&7 (#10) | — | W22 | — | 0.5 | MAXXECUGEN2R-MX1-31 | — | — | — |
| 13 | Power ground (E01) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 17 | Cold start injector 1 (STJ1) | — | W34 | — | 0.5 | MAXXECUGEN2R-MX1-8 | — | — | — |
| 19 | O2 heater 2 (HT2) | — | W32 | — | 0.5 | MAXXECUGEN2R-MX2-12 | — | — | — |
| 20 | O2 heater 1 (HT1) | — | W33 | — | 0.5 | MAXXECUGEN2R-MX3-12 | — | — | — |
| 21 | EGR solenoid | — | W41 | — | 0.5 | MAXXECUGEN2R-MX3-31 | — | — | — |
| 22 | Fuel pressure-up VSV (PR) | — | W42 | — | 0.5 | MAXXECUGEN2R-MX3-32 | — | — | — |
| 24 | Injector 3&5 (#40) | — | W24 | — | 0.5 | MAXXECUGEN2R-MX1-33 | — | — | — |
| 25 | Injector 4&6 (#30) | — | W25 | — | 0.5 | MAXXECUGEN2R-MX1-34 | — | — | — |
| 26 | Power ground (E02) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Cold start injector (STJ) | — | W43 | — | 0.5 | MAXXECUGEN2R-MX3-33 | — | — | — |
| 5 | ISC stepper coil 4 (ISC4) | — | W38 | — | 0.5 | MAXXECUGEN2R-MX2-34 | — | — | — |
| 6 | ISC stepper coil 3 (ISC3) | — | W37 | — | 0.5 | MAXXECUGEN2R-MX2-33 | — | — | — |
| 7 | ISC stepper coil 2 (ISC2) | — | W36 | — | 0.5 | MAXXECUGEN2R-MX2-3 | — | — | — |
| 8 | ISC stepper coil 1 (ISC1) | — | W35 | — | 0.5 | MAXXECUGEN2R-MX1-17 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | OEM-A-18 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-C-15 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-C-16 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | MAXXECUGEN2R-MX1-14 | — | — | — |
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 | MAXXECUGEN2R-MX1-25 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | MAXXECUGEN2R-MX2-25 | — | — | — |
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 | MAXXECUGEN2R-MX1-9 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MAXXECUGEN2R-MX2-9 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MAXXECUGEN2R-MX3-9 | — | — | — |
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 | MAXXECUGEN2R-MX2-24 | 12V supply 3 | digital_in | single_source | |
| OEM-A-11 | Sensor supply +5V (VC) | vref | MAXXECUGEN2R-MX1-12 | Digital/VR 1 POWER SUPPLY | vref | single_source | |
| OEM-A-12 | EFI main relay (B+) | power_in | MAXXECUGEN2R-MX1-25 + MAXXECUGEN2R-MX2-25 | 12V supply 1 + 12V supply 2 | power_in | single_source | |
| OEM-A-13 | EFI main relay (B1+) | power_in | MAXXECUGEN2R-MX1-25 + MAXXECUGEN2R-MX2-25 | 12V supply 1 + 12V supply 2 | power_in | single_source | |
| OEM-A-14 | Neutral start switch (NSW) | digital_in | MAXXECUGEN2R-MX4-28 | Digital/VR 8 SIGNAL + | digital_in | single_source | |
| OEM-A-16 | Intake air temperature (THA) | temp_in | MAXXECUGEN2R-MX2-5 | AIN 7 | analog_in | single_source | |
| OEM-A-17 | O2 right front (OXR1) | lambda_nb_in | MAXXECUGEN2R-MX1-28 | AIN 3 | analog_in | single_source | |
| OEM-A-18 | Sensor ground (E2) | sensor_ground | MAXXECUGEN2R-MX1-14 | SENSOR GND | sensor_ground | single_source | |
| OEM-A-19 | Vehicle speed (SPD) | digital_in | MAXXECUGEN2R-MX4-3 | Digital/VR 5 SIGNAL + | digital_in | single_source | |
| OEM-A-2 | Starter signal (STA) | digital_in | MAXXECUGEN2R-MX2-13 | AIN 9 | analog_in | single_source | |
| OEM-A-20 | Diagnostic test 2 (TE2) | digital_in | MAXXECUGEN2R-MX4-9 | Digital/VR 7 SIGNAL + | digital_in | single_source | |
| OEM-A-22 | Power ground (E1) | ground | MAXXECUGEN2R-MX1-9 + MAXXECUGEN2R-MX2-9 + MAXXECUGEN2R-MX3-9 | Engine gnd + Engine gnd + Engine gnd | ground | single_source | |
| OEM-A-4 | Throttle position (VTA1) | analog_in | MAXXECUGEN2R-MX1-26 | AIN 1 | analog_in | single_source | |
| OEM-A-5 | Coolant temperature (THW) | temp_in | MAXXECUGEN2R-MX1-27 | AIN 2 | analog_in | single_source | |
| OEM-A-6 | O2 left front (OXL1) | lambda_nb_in | MAXXECUGEN2R-MX1-29 | AIN 4 | analog_in | single_source | |
| OEM-A-7 | EGR temperature sensor | temp_in | MAXXECUGEN2R-MX2-6 | AIN 8 | analog_in | single_source | |
| OEM-A-8 | Knock/shield (KS) | knock_in | — | — | — | single_source | |
| OEM-A-9 | Diagnostic test 1 (TE1) | digital_in | MAXXECUGEN2R-MX4-6 | Digital/VR 6 SIGNAL + | digital_in | single_source | |
| OEM-B-11 | O2 right rear (OXR2) | lambda_nb_in | MAXXECUGEN2R-MX1-30 | AIN 5 | analog_in | single_source | |
| OEM-B-19 | Stop light switch (BK) | digital_in | MAXXECUGEN2R-MX2-14 | AIN 10 | analog_in | single_source | |
| OEM-B-20 | A/T kickdown switch (KD) | digital_in | MAXXECUGEN2R-MX2-15 | AIN 11 | analog_in | single_source | |
| OEM-B-23 | A/C request (AC) | digital_in | MAXXECUGEN2R-MX2-16 | AIN 12 | analog_in | single_source | |
| OEM-B-24 | O2 left rear (OXL2) | lambda_nb_in | MAXXECUGEN2R-MX2-4 | AIN 6 | 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 | MAXXECUGEN2R-MX1-5 | GP out 1 (GND) | low_side_out | single_source | |
| OEM-B-5 | Check-engine lamp (W) | low_side_out | MAXXECUGEN2R-MX3-29 | INJECTOR 7 | injector_out | single_source | |
| OEM-B-6 | Fuel pump relay (FPR) | low_side_out | MAXXECUGEN2R-MX1-6 | GP out 2 (GND) | low_side_out | single_source | |
| OEM-B-7 | A/C clutch relay (ACMG) | low_side_out | MAXXECUGEN2R-MX1-7 | GP out 3 (GND) | low_side_out | single_source | |
| OEM-B-8 | Fuel pump control (FC) | low_side_out | MAXXECUGEN2R-MX3-30 | INJECTOR 8 | injector_out | single_source | |
| OEM-C-1 | TPS idle switch (IDL) | digital_in | MAXXECUGEN2R-MX2-17 | AIN 13 | analog_in | single_source | |
| OEM-C-10 | Igniter 2 feedback (IGF2) | digital_in | MAXXECUGEN2R-MX1-24 | Digital/VR 4 SIGNAL + | digital_in | single_source | |
| OEM-C-11 | Knock sensor 2 (KNK2) | knock_in | MAXXECUGEN2R-MX2-31 | KNOCK 2+ | knock_in | single_source | |
| OEM-C-12 | Check connector VF2 | analog_out | — | — | — | single_source | |
| OEM-C-13 | Ignition 2 (IGT2) | ignition_out | MAXXECUGEN2R-MX1-2 | Ignition 2 | ignition_out | single_source | |
| OEM-C-15 | Cam sensor ground (G-) | sensor_ground | MAXXECUGEN2R-MX1-14 | SENSOR GND | sensor_ground | single_source | |
| OEM-C-16 | Crank sensor - (NE-) | sensor_ground | MAXXECUGEN2R-MX1-14 | SENSOR GND | sensor_ground | single_source | |
| OEM-C-2 | Igniter 1 feedback (IGF1) | digital_in | MAXXECUGEN2R-MX1-23 | Digital/VR 3 SIGNAL + | digital_in | single_source | |
| OEM-C-3 | Knock sensor 1 (KNK1) | knock_in | MAXXECUGEN2R-MX2-28 | KNOCK 1+ | knock_in | single_source | |
| OEM-C-4 | Check connector VF1 | analog_out | — | — | — | single_source | |
| OEM-C-5 | Ignition 1 (IGT1) | ignition_out | MAXXECUGEN2R-MX1-1 | Ignition 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 | MAXXECUGEN2R-MX1-18 | Digital/VR 2 SIGNAL + | trigger_in | single_source | |
| OEM-C-8 | Crank sensor + (NE+) | trigger_in | MAXXECUGEN2R-MX1-10 | Digital/VR 1 SIGNAL + | trigger_in | single_source | |
| OEM-D-11 | Injector 2&8 (#20) | injector_out | MAXXECUGEN2R-MX1-32 | INJECTOR 2 | injector_out | single_source | |
| OEM-D-12 | Injector 1&7 (#10) | injector_out | MAXXECUGEN2R-MX1-31 | INJECTOR 1 | injector_out | single_source | |
| OEM-D-13 | Power ground (E01) | ground | MAXXECUGEN2R-MX1-9 + MAXXECUGEN2R-MX2-9 + MAXXECUGEN2R-MX3-9 | Engine gnd + Engine gnd + Engine gnd | ground | single_source | |
| OEM-D-17 | Cold start injector 1 (STJ1) | low_side_out | MAXXECUGEN2R-MX1-8 | GP out 4 (GND) | low_side_out | single_source | |
| OEM-D-19 | O2 heater 2 (HT2) | low_side_out | MAXXECUGEN2R-MX2-12 | GP OUT 7 / WBO2 Sensor 1 H- | low_side_out | single_source | |
| OEM-D-20 | O2 heater 1 (HT1) | low_side_out | MAXXECUGEN2R-MX3-12 | GP Out 8 (GND) / WBO2 Sensor 2 H- | low_side_out | single_source | |
| OEM-D-21 | EGR solenoid | low_side_out | MAXXECUGEN2R-MX3-31 | INJECTOR 9 | injector_out | single_source | |
| OEM-D-22 | Fuel pressure-up VSV (PR) | low_side_out | MAXXECUGEN2R-MX3-32 | INJECTOR 10 | injector_out | single_source | |
| OEM-D-24 | Injector 3&5 (#40) | injector_out | MAXXECUGEN2R-MX1-33 | INJECTOR 3 | injector_out | single_source | |
| OEM-D-25 | Injector 4&6 (#30) | injector_out | MAXXECUGEN2R-MX1-34 | INJECTOR 4 | injector_out | single_source | |
| OEM-D-26 | Power ground (E02) | ground | MAXXECUGEN2R-MX1-9 + MAXXECUGEN2R-MX2-9 + MAXXECUGEN2R-MX3-9 | Engine gnd + Engine gnd + Engine gnd | ground | single_source | |
| OEM-D-4 | Cold start injector (STJ) | low_side_out | MAXXECUGEN2R-MX3-33 | INJECTOR 11 | injector_out | single_source | |
| OEM-D-5 | ISC stepper coil 4 (ISC4) | low_side_out | MAXXECUGEN2R-MX2-34 | INJECTOR 6 | injector_out | single_source | |
| OEM-D-6 | ISC stepper coil 3 (ISC3) | low_side_out | MAXXECUGEN2R-MX2-33 | INJECTOR 5 | injector_out | single_source | |
| OEM-D-7 | ISC stepper coil 2 (ISC2) | low_side_out | MAXXECUGEN2R-MX2-3 | GP out 6 (GND) | low_side_out | single_source | |
| OEM-D-8 | ISC stepper coil 1 (ISC1) | low_side_out | MAXXECUGEN2R-MX1-17 | GP out 5 (GND) | 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 | MAXXECUGEN2R-MX1-25 | 0.85 | no route | 12V supply 1 | — | |
| W4 | SP-14V-1 | MAXXECUGEN2R-MX2-25 | 0.85 | no route | 12V supply 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 | MAXXECUGEN2R-MX1-9 | 0.85 | no route | Engine gnd | — | |
| W9 | SP-GND-1 | MAXXECUGEN2R-MX2-9 | 0.85 | no route | Engine gnd | — | |
| W10 | SP-GND-1 | MAXXECUGEN2R-MX3-9 | 0.85 | no route | Engine gnd | — | |
| W11 | OEM-A-18 | SP-0V-1 | 0.5 | no route | Sensor ground (E2) | — | |
| W12 | OEM-C-15 | SP-0V-1 | 0.5 | no route | Cam sensor ground (G-) | — | |
| W13 | OEM-C-16 | SP-0V-1 | 0.5 | no route | Crank sensor - (NE-) | — | |
| W14 | SP-0V-1 | MAXXECUGEN2R-MX1-14 | 0.5 | no route | SENSOR GND | — | |
| W15 | OEM-A-11 | MAXXECUGEN2R-MX1-12 | 0.5 | no route | Sensor supply +5V (VC) | — | |
| W16 | OEM-C-8 | MAXXECUGEN2R-MX1-10 | 0.5 | no route | Crank sensor + (NE+) | — | |
| W17 | OEM-C-7 | MAXXECUGEN2R-MX1-18 | 0.5 | no route | Cam sensor 1 + (G1+) | — | |
| W18 | OEM-C-3 | MAXXECUGEN2R-MX2-28 | 0.5 | no route | Knock sensor 1 (KNK1) | — | |
| W19 | OEM-C-11 | MAXXECUGEN2R-MX2-31 | 0.5 | no route | Knock sensor 2 (KNK2) | — | |
| W20 | OEM-C-5 | MAXXECUGEN2R-MX1-1 | 0.5 | no route | Ignition 1 (IGT1) | — | |
| W21 | OEM-C-13 | MAXXECUGEN2R-MX1-2 | 0.5 | no route | Ignition 2 (IGT2) | — | |
| W22 | OEM-D-12 | MAXXECUGEN2R-MX1-31 | 0.5 | no route | Injector 1&7 (#10) | — | |
| W23 | OEM-D-11 | MAXXECUGEN2R-MX1-32 | 0.5 | no route | Injector 2&8 (#20) | — | |
| W24 | OEM-D-24 | MAXXECUGEN2R-MX1-33 | 0.5 | no route | Injector 3&5 (#40) | — | |
| W25 | OEM-D-25 | MAXXECUGEN2R-MX1-34 | 0.5 | no route | Injector 4&6 (#30) | — | |
| W26 | OEM-A-1 | MAXXECUGEN2R-MX2-24 | 0.5 | no route | Ignition switch (IGSW) | — | |
| W27 | OEM-A-4 | MAXXECUGEN2R-MX1-26 | 0.5 | no route | Throttle position (VTA1) | — | |
| W28 | OEM-A-5 | MAXXECUGEN2R-MX1-27 | 0.5 | no route | Coolant temperature (THW) | — | |
| W29 | OEM-B-4 | MAXXECUGEN2R-MX1-5 | 0.5 | no route | EFI main relay control (MREL) | — | |
| W30 | OEM-B-6 | MAXXECUGEN2R-MX1-6 | 0.5 | no route | Fuel pump relay (FPR) | — | |
| W31 | OEM-B-7 | MAXXECUGEN2R-MX1-7 | 0.5 | no route | A/C clutch relay (ACMG) | — | |
| W32 | OEM-D-19 | MAXXECUGEN2R-MX2-12 | 0.5 | no route | O2 heater 2 (HT2) | — | |
| W33 | OEM-D-20 | MAXXECUGEN2R-MX3-12 | 0.5 | no route | O2 heater 1 (HT1) | — | |
| W34 | OEM-D-17 | MAXXECUGEN2R-MX1-8 | 0.5 | no route | Cold start injector 1 (STJ1) | — | |
| W35 | OEM-D-8 | MAXXECUGEN2R-MX1-17 | 0.5 | no route | ISC stepper coil 1 (ISC1) | — | |
| W36 | OEM-D-7 | MAXXECUGEN2R-MX2-3 | 0.5 | no route | ISC stepper coil 2 (ISC2) | — | |
| W37 | OEM-D-6 | MAXXECUGEN2R-MX2-33 | 0.5 | no route | ISC stepper coil 3 (ISC3) | — | |
| W38 | OEM-D-5 | MAXXECUGEN2R-MX2-34 | 0.5 | no route | ISC stepper coil 4 (ISC4) | — | |
| W39 | OEM-B-5 | MAXXECUGEN2R-MX3-29 | 0.5 | no route | Check-engine lamp (W) | — | |
| W40 | OEM-B-8 | MAXXECUGEN2R-MX3-30 | 0.5 | no route | Fuel pump control (FC) | — | |
| W41 | OEM-D-21 | MAXXECUGEN2R-MX3-31 | 0.5 | no route | EGR solenoid | — | |
| W42 | OEM-D-22 | MAXXECUGEN2R-MX3-32 | 0.5 | no route | Fuel pressure-up VSV (PR) | — | |
| W43 | OEM-D-4 | MAXXECUGEN2R-MX3-33 | 0.5 | no route | Cold start injector (STJ) | — | |
| W44 | OEM-A-17 | MAXXECUGEN2R-MX1-28 | 0.5 | no route | O2 right front (OXR1) | — | |
| W45 | OEM-A-6 | MAXXECUGEN2R-MX1-29 | 0.5 | no route | O2 left front (OXL1) | — | |
| W46 | OEM-B-11 | MAXXECUGEN2R-MX1-30 | 0.5 | no route | O2 right rear (OXR2) | — | |
| W47 | OEM-B-24 | MAXXECUGEN2R-MX2-4 | 0.5 | no route | O2 left rear (OXL2) | — | |
| W48 | OEM-A-16 | MAXXECUGEN2R-MX2-5 | 0.5 | no route | Intake air temperature (THA) | — | |
| W49 | OEM-A-7 | MAXXECUGEN2R-MX2-6 | 0.5 | no route | EGR temperature sensor | — | |
| W50 | OEM-C-2 | MAXXECUGEN2R-MX1-23 | 0.5 | no route | Igniter 1 feedback (IGF1) | — | |
| W51 | OEM-C-10 | MAXXECUGEN2R-MX1-24 | 0.5 | no route | Igniter 2 feedback (IGF2) | — | |
| W52 | OEM-A-19 | MAXXECUGEN2R-MX4-3 | 0.5 | no route | Vehicle speed (SPD) | — | |
| W53 | OEM-A-9 | MAXXECUGEN2R-MX4-6 | 0.5 | no route | Diagnostic test 1 (TE1) | — | |
| W54 | OEM-A-20 | MAXXECUGEN2R-MX4-9 | 0.5 | no route | Diagnostic test 2 (TE2) | — | |
| W55 | OEM-A-14 | MAXXECUGEN2R-MX4-28 | 0.5 | no route | Neutral start switch (NSW) | — | |
| W56 | OEM-A-2 | MAXXECUGEN2R-MX2-13 | 0.5 | no route | Starter signal (STA) | — | |
| W57 | OEM-B-19 | MAXXECUGEN2R-MX2-14 | 0.5 | no route | Stop light switch (BK) | — | |
| W58 | OEM-B-20 | MAXXECUGEN2R-MX2-15 | 0.5 | no route | A/T kickdown switch (KD) | — | |
| W59 | OEM-B-23 | MAXXECUGEN2R-MX2-16 | 0.5 | no route | A/C request (AC) | — | |
| W60 | OEM-C-1 | MAXXECUGEN2R-MX2-17 | 0.5 | no route | TPS idle switch (IDL) | — |
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 (17)
| 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 | NET_FAMILY | OEM-A-2 ↔ MAXXECUGEN2R-MX2-13 | OEM-A-2 "Starter signal (STA)" [digital_in] is wired to MAXXECUGEN2R-MX2-13 "AIN 9" [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. |
| warn | NET_FAMILY | OEM-B-19 ↔ MAXXECUGEN2R-MX2-14 | OEM-B-19 "Stop light switch (BK)" [digital_in] is wired to MAXXECUGEN2R-MX2-14 "AIN 10" [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. |
| warn | NET_FAMILY | OEM-B-20 ↔ MAXXECUGEN2R-MX2-15 | OEM-B-20 "A/T kickdown switch (KD)" [digital_in] is wired to MAXXECUGEN2R-MX2-15 "AIN 11" [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. |
| warn | NET_FAMILY | OEM-B-23 ↔ MAXXECUGEN2R-MX2-16 | OEM-B-23 "A/C request (AC)" [digital_in] is wired to MAXXECUGEN2R-MX2-16 "AIN 12" [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. |
| warn | NET_FAMILY | OEM-C-1 ↔ MAXXECUGEN2R-MX2-17 | OEM-C-1 "TPS idle switch (IDL)" [digital_in] is wired to MAXXECUGEN2R-MX2-17 "AIN 13" [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 | NET_FAMILY | OEM-A-16 ↔ MAXXECUGEN2R-MX2-5 | OEM-A-16 "Intake air temperature (THA)" [temp_in] is wired to MAXXECUGEN2R-MX2-5 "AIN 7" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-A-5 ↔ MAXXECUGEN2R-MX1-27 | OEM-A-5 "Coolant temperature (THW)" [temp_in] is wired to MAXXECUGEN2R-MX1-27 "AIN 2" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-A-7 ↔ MAXXECUGEN2R-MX2-6 | OEM-A-7 "EGR temperature sensor" [temp_in] is wired to MAXXECUGEN2R-MX2-6 "AIN 8" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-B-5 ↔ MAXXECUGEN2R-MX3-29 | OEM-B-5 "Check-engine lamp (W)" [low_side_out] is wired to MAXXECUGEN2R-MX3-29 "INJECTOR 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-B-8 ↔ MAXXECUGEN2R-MX3-30 | OEM-B-8 "Fuel pump control (FC)" [low_side_out] is wired to MAXXECUGEN2R-MX3-30 "INJECTOR 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-D-21 ↔ MAXXECUGEN2R-MX3-31 | OEM-D-21 "EGR solenoid" [low_side_out] is wired to MAXXECUGEN2R-MX3-31 "INJECTOR 9" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-D-22 ↔ MAXXECUGEN2R-MX3-32 | OEM-D-22 "Fuel pressure-up VSV (PR)" [low_side_out] is wired to MAXXECUGEN2R-MX3-32 "INJECTOR 10" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-D-4 ↔ MAXXECUGEN2R-MX3-33 | OEM-D-4 "Cold start injector (STJ)" [low_side_out] is wired to MAXXECUGEN2R-MX3-33 "INJECTOR 11" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-D-5 ↔ MAXXECUGEN2R-MX2-34 | OEM-D-5 "ISC stepper coil 4 (ISC4)" [low_side_out] is wired to MAXXECUGEN2R-MX2-34 "INJECTOR 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-D-6 ↔ MAXXECUGEN2R-MX2-33 | OEM-D-6 "ISC stepper coil 3 (ISC3)" [low_side_out] is wired to MAXXECUGEN2R-MX2-33 "INJECTOR 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 3 optional OEM pins are not mapped: OEM-A-8 Knock/shield (KS); OEM-C-12 Check connector VF2; OEM-C-4 Check connector VF1 |
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 GEN2 RACE Not wired: - OEM-B 26: Battery constant (BATT): MaxxECU MaxxECU GEN2 RACE has no battery-constant input; not needed - OEM-A 8: Knock/shield (KS): no free knock input on MaxxECU MaxxECU GEN2 RACE - OEM-C 4: Check connector VF1: no free analog_out on MaxxECU MaxxECU GEN2 RACE - OEM-C 12: Check connector VF2: no free analog_out on MaxxECU MaxxECU GEN2 RACE
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | MaxxECU GEN2 pinout (RACE MX1–MX4 / TRACK MX1–MX3) | http://www.maxxecu.com/webhelp/wirings-maxxecu_gen2_pinout.html | archive | 2026-10-05 | f689b8b6b08f |
| 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/ | — | — | — |