Toyota Supra A80 1997-2002 JDM (2JZ-GTE VVT-i, single-turbo) → MaxxECU MaxxECU MINI REV10+ (auto)
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 | 9: read the Findings page before cutting any wire |
| Size of the job | 41 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-B78-16 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-B78-7 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-B78-8 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | MAXXECUMINI-C1-H4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-B74-21 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-B74-31 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-B74-9 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-B75-17 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MAXXECUMINI-C1-G4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-B74-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-B75-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-B75-19 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-B78-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | MAXXECUMINI-C1-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | MAXXECUMINI-C1-B3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | MAXXECUMINI-C1-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | MAXXECUMINI-C1-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-B75-2 | MAXXECUMINI-C1-E2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-B74-23 | MAXXECUMINI-C1-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-B74-11 | MAXXECUMINI-C1-F1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-B74-12 | MAXXECUMINI-C1-F2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-B74-13 | MAXXECUMINI-C1-F3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-B75-5 | MAXXECUMINI-C1-G3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-B75-6 | MAXXECUMINI-C1-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-B74-1 | MAXXECUMINI-C1-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-B74-2 | MAXXECUMINI-C1-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-B74-3 | MAXXECUMINI-C1-G3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B74-4 | MAXXECUMINI-C1-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B74-30 | SP-SHD-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | SP-SHD-1 | MAXXECUMINI-C1-D3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-B74-17 | MAXXECUMINI-C1-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-B74-18 | MAXXECUMINI-C1-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-B74-19 | MAXXECUMINI-C1-E1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-B74-20 | MAXXECUMINI-C1-D1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B75-9 | MAXXECUMINI-C1-C3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-B75-15 | MAXXECUMINI-C1-D2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-B75-23 | MAXXECUMINI-C1-C4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-B75-14 | MAXXECUMINI-C1-C1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-B75-22 | MAXXECUMINI-C1-C2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-B77-25 | MAXXECUMINI-C1-B1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-B76-11 | MAXXECUMINI-C1-B2 | 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 | MAXXECUMINI-C1-A2 | MAXXECUMINI-C1-E2 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 2 | MAXXECUMINI-C1-A2 | MAXXECUMINI-C1-H4 | open (OL) | sensor ground must not touch +12 V supply | |
| 3 | MAXXECUMINI-C1-E2 | MAXXECUMINI-C1-H4 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 4 | MAXXECUMINI-C1-G4 | MAXXECUMINI-C1-E2 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | MAXXECUMINI-C1-G4 | MAXXECUMINI-C1-H4 | open (OL) | power ground 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
MAXXECUMINI-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | TRIGGER | — | W19 | — | 0.5 | OEM-B74-23 | — | — | — |
| A2 | TRIGGER GND | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| B1 | DIN 1 (Hall only) | — | W40 | — | 0.5 | OEM-B77-25 | — | — | — |
| B2 | DIN 2 (Hall only) | — | W41 | — | 0.5 | OEM-B76-11 | — | — | — |
| B3 | SENSOR GND | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| B4 | SENSOR GND | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| C1 | CLT | — | W38 | — | 0.5 | OEM-B75-14 | — | — | — |
| C2 | IAT | — | W39 | — | 0.5 | OEM-B75-22 | — | — | — |
| C3 | AIN 3 (0-5V) | — | W35 | — | 0.5 | OEM-B75-9 | — | — | — |
| C4 | AIN 4 (0-5V) | — | W37 | — | 0.5 | OEM-B75-23 | — | — | — |
| D1 | GPO 8/TACHO | — | W34 | — | 0.5 | OEM-B74-20 | — | — | — |
| D2 | TPS | — | W36 | — | 0.5 | OEM-B75-15 | — | — | — |
| D3 | GND Shield | — | W30 | — | 0.5 | SP-SHD-1 | — | — | — |
| D4 | SENSOR GND | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| E1 | GPO 3 | — | W33 | — | 0.5 | OEM-B74-19 | — | — | — |
| E2 | +5V sensor supply | — | W18 | — | 0.5 | OEM-B75-2 | — | — | — |
| E3 | CAN L | — | — | — | — | — | — | — | — |
| E4 | CAN H | — | — | — | — | — | — | — | — |
| F1 | IGN 1 | — | W20 | — | 0.5 | OEM-B74-11 | — | — | — |
| F2 | IGN 2 | — | W21 | — | 0.5 | OEM-B74-12 | — | — | — |
| F3 | IGN 3 | — | W22 | — | 0.5 | OEM-B74-13 | — | — | — |
| F4 | IGN 4 | — | — | — | — | — | — | — | — |
| G1 | GPO 2 | — | W32 | — | 0.5 | OEM-B74-18 | — | — | — |
| G2 | GPO 1 | — | W31 | — | 0.5 | OEM-B74-17 | — | — | — |
| G3 | INJ 1 | — | W23 | — | 0.5 | OEM-B75-5 | — | — | — |
| G3 | INJ 1 | — | W27 | — | 0.5 | OEM-B74-3 | — | — | — |
| G4 | ENGINE GND | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| H1 | INJ 2 | — | W24 | — | 0.5 | OEM-B75-6 | — | — | — |
| H1 | INJ 2 | — | W28 | — | 0.5 | OEM-B74-4 | — | — | — |
| H2 | INJ 3 | — | W25 | — | 0.5 | OEM-B74-1 | — | — | — |
| H3 | INJ 4 | — | W26 | — | 0.5 | OEM-B74-2 | — | — | — |
| H4 | +12V (ECU power supply) | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
OEM-B74
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 3 (#30) | — | W25 | — | 0.5 | MAXXECUMINI-C1-H2 | — | — | — |
| 10 | Cam position (G2) | — | — | — | — | — | — | — | — |
| 11 | Ignition 1 (IGT, cyl 1&6) | — | W20 | — | 0.5 | MAXXECUMINI-C1-F1 | — | — | — |
| 12 | Ignition 2 (IGT2, cyl 5&2) | — | W21 | — | 0.5 | MAXXECUMINI-C1-F2 | — | — | — |
| 13 | Ignition 3 (IGT3, cyl 3&4) | — | W22 | — | 0.5 | MAXXECUMINI-C1-F3 | — | — | — |
| 15 | Wastegate VSV (PMC) | — | — | — | — | — | — | — | — |
| 17 | VVT-i OCV - (OCV-) | — | W31 | — | 0.5 | MAXXECUMINI-C1-G2 | — | — | — |
| 18 | VVT-i OCV + (OCV+) | — | W32 | — | 0.5 | MAXXECUMINI-C1-G1 | — | — | — |
| 19 | ETCS-i clutch - (CL-) | — | W33 | — | 0.5 | MAXXECUMINI-C1-E1 | — | — | — |
| 2 | Injector 4 (#40) | — | W26 | — | 0.5 | MAXXECUMINI-C1-H3 | — | — | — |
| 20 | ETCS-i clutch + (CL+) | — | W34 | — | 0.5 | MAXXECUMINI-C1-D1 | — | — | — |
| 21 | Power ground (E01) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 22 | Crank/cam sensor return (NE-) | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 23 | Crank position (NE+) | — | W19 | — | 0.5 | MAXXECUMINI-C1-A1 | — | — | — |
| 24 | Neutral/park switch (NSW) | — | — | — | — | — | — | — | — |
| 25 | Igniter verification (IGF) | — | — | — | — | — | — | — | — |
| 27 | Knock sensor 2 (KNK2, rear) | — | — | — | — | — | — | — | — |
| 28 | Knock sensor 1 (KNK1, front) | — | — | — | — | — | — | — | — |
| 3 | Injector 5 (#50) | — | W27 | — | 0.5 | MAXXECUMINI-C1-G3 | — | — | — |
| 30 | ETCS-i motor shield (GEO1) | — | W29 | — | 0.5 | SP-SHD-1 | — | — | — |
| 31 | Power ground (E02) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Injector 6 (#60) | — | W28 | — | 0.5 | MAXXECUMINI-C1-H1 | — | — | — |
| 5 | Intake air bypass VSV (VSV1) | — | — | — | — | — | — | — | — |
| 7 | ETCS-i motor - (M-) | — | — | — | — | — | — | — | — |
| 8 | ETCS-i motor + (M+) | — | — | — | — | — | — | — | — |
| 9 | ETCS-i ground (ME01) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
OEM-B75
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Mass air flow (VG) | — | — | — | — | — | — | — | — |
| 12 | O2 sensor (OX) | — | — | — | — | — | — | — | — |
| 14 | Coolant temperature (THW) | — | W38 | — | 0.5 | MAXXECUMINI-C1-C1 | — | — | — |
| 15 | Accelerator pedal 1 (VPA) | — | W36 | — | 0.5 | MAXXECUMINI-C1-D2 | — | — | — |
| 16 | Accelerator pedal 2 (VPA2) | — | — | — | — | — | — | — | — |
| 17 | Power ground (E1) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 18 | Sensor ground (E2) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | MAF ground (EVG) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Sensor power (VC) | — | W18 | — | 0.5 | MAXXECUMINI-C1-E2 | — | — | — |
| 20 | A/T 2nd-gear indicator (2) | — | — | — | — | — | — | — | — |
| 21 | A/T 1st-gear indicator (L) | — | — | — | — | — | — | — | — |
| 22 | Intake air temperature (THA) | — | W39 | — | 0.5 | MAXXECUMINI-C1-C2 | — | — | — |
| 23 | Throttle position 1 (VTA) | — | W37 | — | 0.5 | MAXXECUMINI-C1-C4 | — | — | — |
| 24 | Throttle position 2 (VTA2) | — | — | — | — | — | — | — | — |
| 3 | Exhaust gas control VSV (VSV2) | — | — | — | — | — | — | — | — |
| 4 | O2 sensor heater (HT) | — | — | — | — | — | — | — | — |
| 5 | Injector 1 (#10) | — | W23 | — | 0.5 | MAXXECUMINI-C1-G3 | — | — | — |
| 6 | Injector 2 (#20) | — | W24 | — | 0.5 | MAXXECUMINI-C1-H1 | — | — | — |
| 7 | EVAP purge VSV (PRG) | — | — | — | — | — | — | — | — |
| 8 | Main oil pressure switch (MOPS) | — | — | — | — | — | — | — | — |
| 9 | Manifold pressure (PIM) | — | W35 | — | 0.5 | MAXXECUMINI-C1-C3 | — | — | — |
OEM-B76
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | A/T shift solenoid 1 (S1) | — | — | — | — | — | — | — | — |
| 10 | OD direct-clutch speed (NCO-) | — | — | — | — | — | — | — | — |
| 11 | No.2 speed sensor return (SP2-) | — | W41 | — | 0.5 | MAXXECUMINI-C1-B2 | — | — | — |
| 12 | Exhaust bypass VSV (VSV3) | — | — | — | — | — | — | — | — |
| 13 | A/T lock-up solenoid - (SLU-) | — | — | — | — | — | — | — | — |
| 14 | A/T accumulator solenoid - (SLN-) | — | — | — | — | — | — | — | — |
| 15 | A/T line-pressure solenoid - (SLT-) | — | — | — | — | — | — | — | — |
| 16 | Fuel pressure-up VSV (FPU) | — | — | — | — | — | — | — | — |
| 17 | A/T oil temperature (OIL) | — | — | — | — | — | — | — | — |
| 2 | A/T shift solenoid 2 (S2) | — | — | — | — | — | — | — | — |
| 3 | A/T shift solenoid 3 (S3) | — | — | — | — | — | — | — | — |
| 4 | OD direct-clutch speed (NCO+) | — | — | — | — | — | — | — | — |
| 5 | No.2 speed sensor (SP2+) | — | — | — | — | — | — | — | — |
| 6 | A/T shift solenoid 4 (S4) | — | — | — | — | — | — | — | — |
| 7 | A/T lock-up solenoid + (SLU+) | — | — | — | — | — | — | — | — |
| 8 | A/T accumulator solenoid + (SLN+) | — | — | — | — | — | — | — | — |
| 9 | A/T line-pressure solenoid + (SLT+) | — | — | — | — | — | — | — | — |
OEM-B77
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | A/C request (AC) | — | — | — | — | — | — | — | — |
| 13 | A/C clutch relay (ACMG) | — | — | — | — | — | — | — | — |
| 14 | A/T shift down (SFTD) | — | — | — | — | — | — | — | — |
| 16 | A/T reverse indicator (R) | — | — | — | — | — | — | — | — |
| 18 | Rear right wheel speed (RRO) | — | — | — | — | — | — | — | — |
| 19 | Rear left wheel speed (RLO) | — | — | — | — | — | — | — | — |
| 2 | Starter signal (STA) | — | — | — | — | — | — | — | — |
| 20 | Tachometer output (TACH) | — | — | — | — | — | — | — | — |
| 21 | ABS active (ABS) | — | — | — | — | — | — | — | — |
| 25 | No.1 speed sensor (SPD) | — | W40 | — | 0.5 | MAXXECUMINI-C1-B1 | — | — | — |
| 26 | Electrical load sense (ELS) | — | — | — | — | — | — | — | — |
| 27 | Road speed (RSPD) | — | — | — | — | — | — | — | — |
| 4 | A/T shift up (SFTU) | — | — | — | — | — | — | — | — |
| 5 | Diagnostic/timing check (TC) | — | — | — | — | — | — | — | — |
| 6 | Stop light switch (STP) | — | — | — | — | — | — | — | — |
| 7 | A/T manual position (3) | — | — | — | — | — | — | — | — |
OEM-B78
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Battery constant (BATT) | — | — | — | — | — | — | — | — |
| 10 | EFI main relay control (M-REL) | — | — | — | — | — | — | — | — |
| 11 | Serial diagnostic (SIL) | — | — | — | — | — | — | — | — |
| 16 | EFI main relay power (+B) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | TRAC snow-mode light (SNOW) | — | — | — | — | — | — | — | — |
| 22 | Switch ground (EC) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | TRAC snow-mode switch (SNWI) | — | — | — | — | — | — | — | — |
| 4 | Fuel pump diagnostic (DI) | — | — | — | — | — | — | — | — |
| 5 | Fuel pump control (FPC) | — | — | — | — | — | — | — | — |
| 6 | Check-engine light (W) | — | — | — | — | — | — | — | — |
| 7 | ETCS-i power (+BM) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 8 | EFI main relay power (+B2) | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 9 | Ignition switch (IGSW) | — | — | — | — | — | — | — | — |
OEM-B79
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | TRAC enable light (IND) | — | — | — | — | — | — | — | — |
| 14 | TRAC active light (CIND) | — | — | — | — | — | — | — | — |
| 17 | A/T meter LCD (LPO3) | — | — | — | — | — | — | — | — |
| 18 | A/T meter LCD (SPTL) | — | — | — | — | — | — | — | — |
| 19 | Reverse buzzer (BZ) | — | — | — | — | — | — | — | — |
| 2 | TRAC off switch (MSW) | — | — | — | — | — | — | — | — |
| 3 | A/T meter LCD (LPO1) | — | — | — | — | — | — | — | — |
| 4 | A/T meter LCD (LPO2) | — | — | — | — | — | — | — | — |
| 7 | Front right wheel speed (FRO) | — | — | — | — | — | — | — | — |
| 8 | Front left wheel speed (FLO) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W10 | — | 0.5 | OEM-B74-22 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-B75-18 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-B75-19 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-B78-22 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | MAXXECUMINI-C1-A2 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | MAXXECUMINI-C1-B3 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | MAXXECUMINI-C1-B4 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MAXXECUMINI-C1-D4 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-B78-16 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-B78-7 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | OEM-B78-8 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | MAXXECUMINI-C1-H4 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-B74-21 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-B74-31 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-B74-9 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-B75-17 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MAXXECUMINI-C1-G4 | — | — | — |
SP-SHD
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W29 | — | 0.5 | OEM-B74-30 | — | — | — |
| 1 | — | — | W30 | — | 0.5 | MAXXECUMINI-C1-D3 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-B74-1 | Injector 3 (#30) | injector_out | MAXXECUMINI-C1-H2 | INJ 3 | injector_out | single_source | |
| OEM-B74-10 | Cam position (G2) | trigger_in | — | — | — | single_source | |
| OEM-B74-11 | Ignition 1 (IGT, cyl 1&6) | ignition_out | MAXXECUMINI-C1-F1 | IGN 1 | ignition_out | single_source | |
| OEM-B74-12 | Ignition 2 (IGT2, cyl 5&2) | ignition_out | MAXXECUMINI-C1-F2 | IGN 2 | ignition_out | single_source | |
| OEM-B74-13 | Ignition 3 (IGT3, cyl 3&4) | ignition_out | MAXXECUMINI-C1-F3 | IGN 3 | ignition_out | single_source | |
| OEM-B74-15 | Wastegate VSV (PMC) | low_side_out | — | — | — | single_source | |
| OEM-B74-17 | VVT-i OCV - (OCV-) | low_side_out | MAXXECUMINI-C1-G2 | GPO 1 | low_side_out | single_source | |
| OEM-B74-18 | VVT-i OCV + (OCV+) | low_side_out | MAXXECUMINI-C1-G1 | GPO 2 | low_side_out | single_source | |
| OEM-B74-19 | ETCS-i clutch - (CL-) | low_side_out | MAXXECUMINI-C1-E1 | GPO 3 | low_side_out | single_source | |
| OEM-B74-2 | Injector 4 (#40) | injector_out | MAXXECUMINI-C1-H3 | INJ 4 | injector_out | single_source | |
| OEM-B74-20 | ETCS-i clutch + (CL+) | low_side_out | MAXXECUMINI-C1-D1 | GPO 8/TACHO | low_side_out | single_source | |
| OEM-B74-21 | Power ground (E01) | ground | MAXXECUMINI-C1-G4 | ENGINE GND | ground | single_source | |
| OEM-B74-22 | Crank/cam sensor return (NE-) | sensor_ground | MAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4 | TRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-B74-23 | Crank position (NE+) | trigger_in | MAXXECUMINI-C1-A1 | TRIGGER | trigger_in | single_source | |
| OEM-B74-24 | Neutral/park switch (NSW) | digital_in | — | — | — | single_source | |
| OEM-B74-25 | Igniter verification (IGF) | digital_in | — | — | — | single_source | |
| OEM-B74-27 | Knock sensor 2 (KNK2, rear) | knock_in | — | — | — | single_source | |
| OEM-B74-28 | Knock sensor 1 (KNK1, front) | knock_in | — | — | — | single_source | |
| OEM-B74-3 | Injector 5 (#50) | injector_out | MAXXECUMINI-C1-G3 | INJ 1 | injector_out | single_source | |
| OEM-B74-30 | ETCS-i motor shield (GEO1) | shield | MAXXECUMINI-C1-D3 | GND Shield | shield | single_source | |
| OEM-B74-31 | Power ground (E02) | ground | MAXXECUMINI-C1-G4 | ENGINE GND | ground | single_source | |
| OEM-B74-4 | Injector 6 (#60) | injector_out | MAXXECUMINI-C1-H1 | INJ 2 | injector_out | single_source | |
| OEM-B74-5 | Intake air bypass VSV (VSV1) | low_side_out | — | — | — | single_source | |
| OEM-B74-7 | ETCS-i motor - (M-) | hbridge_out | — | — | — | single_source | |
| OEM-B74-8 | ETCS-i motor + (M+) | hbridge_out | — | — | — | single_source | |
| OEM-B74-9 | ETCS-i ground (ME01) | ground | MAXXECUMINI-C1-G4 | ENGINE GND | ground | single_source | |
| OEM-B75-10 | Mass air flow (VG) | analog_in | — | — | — | single_source | |
| OEM-B75-12 | O2 sensor (OX) | lambda_nb_in | — | — | — | single_source | |
| OEM-B75-14 | Coolant temperature (THW) | temp_in | MAXXECUMINI-C1-C1 | CLT | temp_in | single_source | |
| OEM-B75-15 | Accelerator pedal 1 (VPA) | analog_in | MAXXECUMINI-C1-D2 | TPS | analog_in | single_source | |
| OEM-B75-16 | Accelerator pedal 2 (VPA2) | analog_in | — | — | — | single_source | |
| OEM-B75-17 | Power ground (E1) | ground | MAXXECUMINI-C1-G4 | ENGINE GND | ground | single_source | |
| OEM-B75-18 | Sensor ground (E2) | sensor_ground | MAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4 | TRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-B75-19 | MAF ground (EVG) | sensor_ground | MAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4 | TRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-B75-2 | Sensor power (VC) | vref | MAXXECUMINI-C1-E2 | +5V sensor supply | vref | single_source | |
| OEM-B75-20 | A/T 2nd-gear indicator (2) | digital_in | — | — | — | single_source | |
| OEM-B75-21 | A/T 1st-gear indicator (L) | digital_in | — | — | — | single_source | |
| OEM-B75-22 | Intake air temperature (THA) | temp_in | MAXXECUMINI-C1-C2 | IAT | temp_in | single_source | |
| OEM-B75-23 | Throttle position 1 (VTA) | analog_in | MAXXECUMINI-C1-C4 | AIN 4 (0-5V) | analog_in | single_source | |
| OEM-B75-24 | Throttle position 2 (VTA2) | analog_in | — | — | — | single_source | |
| OEM-B75-3 | Exhaust gas control VSV (VSV2) | low_side_out | — | — | — | single_source | |
| OEM-B75-4 | O2 sensor heater (HT) | low_side_out | — | — | — | single_source | |
| OEM-B75-5 | Injector 1 (#10) | injector_out | MAXXECUMINI-C1-G3 | INJ 1 | injector_out | single_source | |
| OEM-B75-6 | Injector 2 (#20) | injector_out | MAXXECUMINI-C1-H1 | INJ 2 | injector_out | single_source | |
| OEM-B75-7 | EVAP purge VSV (PRG) | low_side_out | — | — | — | single_source | |
| OEM-B75-8 | Main oil pressure switch (MOPS) | digital_in | — | — | — | single_source | |
| OEM-B75-9 | Manifold pressure (PIM) | analog_in | MAXXECUMINI-C1-C3 | AIN 3 (0-5V) | analog_in | single_source | |
| OEM-B76-1 | A/T shift solenoid 1 (S1) | low_side_out | — | — | — | single_source | |
| OEM-B76-10 | OD direct-clutch speed (NCO-) | digital_in | — | — | — | single_source | |
| OEM-B76-11 | No.2 speed sensor return (SP2-) | digital_in | MAXXECUMINI-C1-B2 | DIN 2 (Hall only) | digital_in | single_source | |
| OEM-B76-12 | Exhaust bypass VSV (VSV3) | low_side_out | — | — | — | single_source | |
| OEM-B76-13 | A/T lock-up solenoid - (SLU-) | low_side_out | — | — | — | single_source | |
| OEM-B76-14 | A/T accumulator solenoid - (SLN-) | low_side_out | — | — | — | single_source | |
| OEM-B76-15 | A/T line-pressure solenoid - (SLT-) | low_side_out | — | — | — | single_source | |
| OEM-B76-16 | Fuel pressure-up VSV (FPU) | low_side_out | — | — | — | single_source | |
| OEM-B76-17 | A/T oil temperature (OIL) | temp_in | — | — | — | single_source | |
| OEM-B76-2 | A/T shift solenoid 2 (S2) | low_side_out | — | — | — | single_source | |
| OEM-B76-3 | A/T shift solenoid 3 (S3) | low_side_out | — | — | — | single_source | |
| OEM-B76-4 | OD direct-clutch speed (NCO+) | digital_in | — | — | — | single_source | |
| OEM-B76-5 | No.2 speed sensor (SP2+) | digital_in | — | — | — | single_source | |
| OEM-B76-6 | A/T shift solenoid 4 (S4) | low_side_out | — | — | — | single_source | |
| OEM-B76-7 | A/T lock-up solenoid + (SLU+) | low_side_out | — | — | — | single_source | |
| OEM-B76-8 | A/T accumulator solenoid + (SLN+) | low_side_out | — | — | — | single_source | |
| OEM-B76-9 | A/T line-pressure solenoid + (SLT+) | low_side_out | — | — | — | single_source | |
| OEM-B77-1 | A/C request (AC) | digital_in | — | — | — | single_source | |
| OEM-B77-13 | A/C clutch relay (ACMG) | low_side_out | — | — | — | single_source | |
| OEM-B77-14 | A/T shift down (SFTD) | digital_in | — | — | — | single_source | |
| OEM-B77-16 | A/T reverse indicator (R) | digital_in | — | — | — | single_source | |
| OEM-B77-18 | Rear right wheel speed (RRO) | digital_in | — | — | — | single_source | |
| OEM-B77-19 | Rear left wheel speed (RLO) | digital_in | — | — | — | single_source | |
| OEM-B77-2 | Starter signal (STA) | digital_in | — | — | — | single_source | |
| OEM-B77-20 | Tachometer output (TACH) | tacho_out | — | — | — | single_source | |
| OEM-B77-21 | ABS active (ABS) | digital_in | — | — | — | single_source | |
| OEM-B77-25 | No.1 speed sensor (SPD) | digital_in | MAXXECUMINI-C1-B1 | DIN 1 (Hall only) | digital_in | single_source | |
| OEM-B77-26 | Electrical load sense (ELS) | digital_in | — | — | — | single_source | |
| OEM-B77-27 | Road speed (RSPD) | digital_in | — | — | — | single_source | |
| OEM-B77-4 | A/T shift up (SFTU) | digital_in | — | — | — | single_source | |
| OEM-B77-5 | Diagnostic/timing check (TC) | digital_in | — | — | — | single_source | |
| OEM-B77-6 | Stop light switch (STP) | digital_in | — | — | — | single_source | |
| OEM-B77-7 | A/T manual position (3) | digital_in | — | — | — | single_source | |
| OEM-B78-1 | Battery constant (BATT) | power_in | — | — | — | single_source | |
| OEM-B78-10 | EFI main relay control (M-REL) | low_side_out | — | — | — | single_source | |
| OEM-B78-11 | Serial diagnostic (SIL) | serial | — | — | — | single_source | |
| OEM-B78-16 | EFI main relay power (+B) | power_in | MAXXECUMINI-C1-H4 | +12V (ECU power supply) | power_in | single_source | |
| OEM-B78-2 | TRAC snow-mode light (SNOW) | low_side_out | — | — | — | single_source | |
| OEM-B78-22 | Switch ground (EC) | sensor_ground | MAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4 | TRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-B78-3 | TRAC snow-mode switch (SNWI) | digital_in | — | — | — | single_source | |
| OEM-B78-4 | Fuel pump diagnostic (DI) | digital_in | — | — | — | single_source | |
| OEM-B78-5 | Fuel pump control (FPC) | low_side_out | — | — | — | single_source | |
| OEM-B78-6 | Check-engine light (W) | low_side_out | — | — | — | single_source | |
| OEM-B78-7 | ETCS-i power (+BM) | power_in | MAXXECUMINI-C1-H4 | +12V (ECU power supply) | power_in | single_source | |
| OEM-B78-8 | EFI main relay power (+B2) | power_in | MAXXECUMINI-C1-H4 | +12V (ECU power supply) | power_in | single_source | |
| OEM-B78-9 | Ignition switch (IGSW) | digital_in | — | — | — | single_source | |
| OEM-B79-1 | TRAC enable light (IND) | low_side_out | — | — | — | single_source | |
| OEM-B79-14 | TRAC active light (CIND) | low_side_out | — | — | — | single_source | |
| OEM-B79-17 | A/T meter LCD (LPO3) | low_side_out | — | — | — | single_source | |
| OEM-B79-18 | A/T meter LCD (SPTL) | low_side_out | — | — | — | single_source | |
| OEM-B79-19 | Reverse buzzer (BZ) | low_side_out | — | — | — | single_source | |
| OEM-B79-2 | TRAC off switch (MSW) | digital_in | — | — | — | single_source | |
| OEM-B79-3 | A/T meter LCD (LPO1) | low_side_out | — | — | — | single_source | |
| OEM-B79-4 | A/T meter LCD (LPO2) | low_side_out | — | — | — | single_source | |
| OEM-B79-7 | Front right wheel speed (FRO) | digital_in | — | — | — | single_source | |
| OEM-B79-8 | Front left wheel speed (FLO) | digital_in | — | — | — | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-B78-16 | SP-14V-1 | 0.85 | no route | EFI main relay power (+B) | — | |
| W2 | OEM-B78-7 | SP-14V-1 | 0.85 | no route | ETCS-i power (+BM) | — | |
| W3 | OEM-B78-8 | SP-14V-1 | 0.85 | no route | EFI main relay power (+B2) | — | |
| W4 | SP-14V-1 | MAXXECUMINI-C1-H4 | 0.85 | no route | +12V (ECU power supply) | — | |
| W5 | OEM-B74-21 | SP-GND-1 | 0.85 | no route | Power ground (E01) | — | |
| W6 | OEM-B74-31 | SP-GND-1 | 0.85 | no route | Power ground (E02) | — | |
| W7 | OEM-B74-9 | SP-GND-1 | 0.85 | no route | ETCS-i ground (ME01) | — | |
| W8 | OEM-B75-17 | SP-GND-1 | 0.85 | no route | Power ground (E1) | — | |
| W9 | SP-GND-1 | MAXXECUMINI-C1-G4 | 0.85 | no route | ENGINE GND | — | |
| W10 | OEM-B74-22 | SP-0V-1 | 0.5 | no route | Crank/cam sensor return (NE-) | — | |
| W11 | OEM-B75-18 | SP-0V-1 | 0.5 | no route | Sensor ground (E2) | — | |
| W12 | OEM-B75-19 | SP-0V-1 | 0.5 | no route | MAF ground (EVG) | — | |
| W13 | OEM-B78-22 | SP-0V-1 | 0.5 | no route | Switch ground (EC) | — | |
| W14 | SP-0V-1 | MAXXECUMINI-C1-A2 | 0.5 | no route | TRIGGER GND | — | |
| W15 | SP-0V-1 | MAXXECUMINI-C1-B3 | 0.5 | no route | SENSOR GND | — | |
| W16 | SP-0V-1 | MAXXECUMINI-C1-B4 | 0.5 | no route | SENSOR GND | — | |
| W17 | SP-0V-1 | MAXXECUMINI-C1-D4 | 0.5 | no route | SENSOR GND | — | |
| W18 | OEM-B75-2 | MAXXECUMINI-C1-E2 | 0.5 | no route | Sensor power (VC) | — | |
| W19 | OEM-B74-23 | MAXXECUMINI-C1-A1 | 0.5 | no route | Crank position (NE+) | — | |
| W20 | OEM-B74-11 | MAXXECUMINI-C1-F1 | 0.5 | no route | Ignition 1 (IGT, cyl 1&6) | — | |
| W21 | OEM-B74-12 | MAXXECUMINI-C1-F2 | 0.5 | no route | Ignition 2 (IGT2, cyl 5&2) | — | |
| W22 | OEM-B74-13 | MAXXECUMINI-C1-F3 | 0.5 | no route | Ignition 3 (IGT3, cyl 3&4) | — | |
| W23 | OEM-B75-5 | MAXXECUMINI-C1-G3 | 0.5 | no route | Injector 1 (#10) | — | |
| W24 | OEM-B75-6 | MAXXECUMINI-C1-H1 | 0.5 | no route | Injector 2 (#20) | — | |
| W25 | OEM-B74-1 | MAXXECUMINI-C1-H2 | 0.5 | no route | Injector 3 (#30) | — | |
| W26 | OEM-B74-2 | MAXXECUMINI-C1-H3 | 0.5 | no route | Injector 4 (#40) | — | |
| W27 | OEM-B74-3 | MAXXECUMINI-C1-G3 | 0.5 | no route | Injector 5 (#50) | — | |
| W28 | OEM-B74-4 | MAXXECUMINI-C1-H1 | 0.5 | no route | Injector 6 (#60) | — | |
| W29 | OEM-B74-30 | SP-SHD-1 | 0.5 | no route | ETCS-i motor shield (GEO1) | — | |
| W30 | SP-SHD-1 | MAXXECUMINI-C1-D3 | 0.5 | no route | GND Shield | — | |
| W31 | OEM-B74-17 | MAXXECUMINI-C1-G2 | 0.5 | no route | VVT-i OCV - (OCV-) | — | |
| W32 | OEM-B74-18 | MAXXECUMINI-C1-G1 | 0.5 | no route | VVT-i OCV + (OCV+) | — | |
| W33 | OEM-B74-19 | MAXXECUMINI-C1-E1 | 0.5 | no route | ETCS-i clutch - (CL-) | — | |
| W34 | OEM-B74-20 | MAXXECUMINI-C1-D1 | 0.5 | no route | ETCS-i clutch + (CL+) | — | |
| W35 | OEM-B75-9 | MAXXECUMINI-C1-C3 | 0.5 | no route | Manifold pressure (PIM) | — | |
| W36 | OEM-B75-15 | MAXXECUMINI-C1-D2 | 0.5 | no route | Accelerator pedal 1 (VPA) | — | |
| W37 | OEM-B75-23 | MAXXECUMINI-C1-C4 | 0.5 | no route | Throttle position 1 (VTA) | — | |
| W38 | OEM-B75-14 | MAXXECUMINI-C1-C1 | 0.5 | no route | Coolant temperature (THW) | — | |
| W39 | OEM-B75-22 | MAXXECUMINI-C1-C2 | 0.5 | no route | Intake air temperature (THA) | — | |
| W40 | OEM-B77-25 | MAXXECUMINI-C1-B1 | 0.5 | no route | No.1 speed sensor (SPD) | — | |
| W41 | OEM-B76-11 | MAXXECUMINI-C1-B2 | 0.5 | no route | No.2 speed sensor return (SP2-) | — |
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 (11)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | INJECTOR_BALLAST | MaxxECU MINI | The 2JZ-GTE injectors (2JZ-GTE fuel injector) are low-impedance, but MaxxECU MINI drives saturated (high-Z) injectors only. Add a ballast resistor pack in series with each injector, or use an ECU with low-Z / peak-and-hold injector drivers. |
| error | NET_MERGED | MAXXECUMINI-C1-G3 + OEM-B74-3 + OEM-B75-5 | 2 different OEM functions share one net: OEM-B74-3 Injector 5 (#50); OEM-B75-5 Injector 1 (#10) |
| error | NET_MERGED | MAXXECUMINI-C1-H1 + OEM-B74-4 + OEM-B75-6 | 2 different OEM functions share one net: OEM-B74-4 Injector 6 (#60); OEM-B75-6 Injector 2 (#20) |
| error | REQUIRED_UNMAPPED | OEM-B74-10 | Required OEM function "Cam position (G2)" (trigger_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B74-7 | Required OEM function "ETCS-i motor - (M-)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B74-8 | Required OEM function "ETCS-i motor + (M+)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B75-16 | Required OEM function "Accelerator pedal 2 (VPA2)" (analog_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B75-24 | Required OEM function "Throttle position 2 (VTA2)" (analog_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B78-9 | Required OEM function "Ignition switch (IGSW)" (digital_in) is not connected to the new ECU. |
| warn | NO_FUEL_PUMP | fuel pump | This engine harness has no fuel-pump control path: no fuel-pump relay output is wired to the new ECU. If the stock car switches the pump outside the ECU (an airflow-meter contact or a separate module), the standalone must drive the pump relay itself — see the install notes for this car. |
| info | UNMAPPED | OEM | 62 optional OEM pins are not mapped: OEM-B74-15 Wastegate VSV (PMC); OEM-B74-24 Neutral/park switch (NSW); OEM-B74-25 Igniter verification (IGF); OEM-B74-27 Knock sensor 2 (KNK2, rear); OEM-B74-28 Knock sensor 1 (KNK1, front); OEM-B74-5 Intake air bypass VSV (VSV1); OEM-B75-10 Mass air flow (VG); OEM-B75-12 O2 sensor (OX); OEM-B75-20 A/T 2nd-gear indicator (2); OEM-B75-21 A/T 1st-gear indicator (L); OEM-B75-3 Exhaust gas control VSV (VSV2); OEM-B75-4 O2 sensor heater (HT); OEM-B75-7 EVAP purge VSV (PRG); OEM-B75-8 Main oil pressure switch (MOPS); OEM-B76-1 A/T shift solenoid 1 (S1); OEM-B76-10 OD direct-clutch speed (NCO-); OEM-B76-12 Exhaust bypass VSV (VSV3); OEM-B76-13 A/T lock-up solenoid - (SLU-); OEM-B76-14 A/T accumulator solenoid - (SLN-); OEM-B76-15 A/T line-pressure solenoid - (SLT-); OEM-B76-16 Fuel pressure-up VSV (FPU); OEM-B76-17 A/T oil temperature (OIL); OEM-B76-2 A/T shift solenoid 2 (S2); OEM-B76-3 A/T shift solenoid 3 (S3); OEM-B76-4 OD direct-clutch speed (NCO+); OEM-B76-5 No.2 speed sensor (SP2+); OEM-B76-6 A/T shift solenoid 4 (S4); OEM-B76-7 A/T lock-up solenoid + (SLU+); OEM-B76-8 A/T accumulator solenoid + (SLN+); OEM-B76-9 A/T line-pressure solenoid + (SLT+); OEM-B77-1 A/C request (AC); OEM-B77-13 A/C clutch relay (ACMG); OEM-B77-14 A/T shift down (SFTD); OEM-B77-16 A/T reverse indicator (R); OEM-B77-18 Rear right wheel speed (RRO); OEM-B77-19 Rear left wheel speed (RLO); OEM-B77-2 Starter signal (STA); OEM-B77-20 Tachometer output (TACH); OEM-B77-21 ABS active (ABS); OEM-B77-26 Electrical load sense (ELS); OEM-B77-27 Road speed (RSPD); OEM-B77-4 A/T shift up (SFTU); OEM-B77-5 Diagnostic/timing check (TC); OEM-B77-6 Stop light switch (STP); OEM-B77-7 A/T manual position (3); OEM-B78-10 EFI main relay control (M-REL); OEM-B78-11 Serial diagnostic (SIL); OEM-B78-2 TRAC snow-mode light (SNOW); OEM-B78-3 TRAC snow-mode switch (SNWI); OEM-B78-4 Fuel pump diagnostic (DI); OEM-B78-5 Fuel pump control (FPC); OEM-B78-6 Check-engine light (W); OEM-B79-1 TRAC enable light (IND); OEM-B79-14 TRAC active light (CIND); OEM-B79-17 A/T meter LCD (LPO3); OEM-B79-18 A/T meter LCD (SPTL); OEM-B79-19 Reverse buzzer (BZ); OEM-B79-2 TRAC off switch (MSW); OEM-B79-3 A/T meter LCD (LPO1); OEM-B79-4 A/T meter LCD (LPO2); OEM-B79-7 Front right wheel speed (FRO); OEM-B79-8 Front left wheel speed (FLO) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-B78-1 | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Fit check: needs add-on. Resolve these before building: - No drive-by-wire; needs a cable-throttle conversion or an external DBW controller - No knock input; the stock knock sensor would be unused - Only 4 ignition outputs for 6 cylinders: wasted spark (pair coils per firing order) - Only 4 injector outputs for 6 injectors: batch / semi-sequential injection 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-B74 10: Cam position (G2): no free cam_vr/cam_hall/frequency_in input on MaxxECU MaxxECU MINI - OEM-B78 9: Ignition switch (IGSW): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); MaxxECU MaxxECU MINI has no dedicated key-on input - OEM-B75 16: Accelerator pedal 2 (VPA2): no free tps/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B75 24: Throttle position 2 (VTA2): no free tps/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B74 7: ETCS-i motor - (M-): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-B74 8: ETCS-i motor + (M+): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand Not wired: - OEM-B78 1: Battery constant (BATT): MaxxECU MaxxECU MINI has no battery-constant input; not needed - OEM-B74 28: Knock sensor 1 (KNK1, front): no free knock input on MaxxECU MaxxECU MINI - OEM-B74 27: Knock sensor 2 (KNK2, rear): no free knock input on MaxxECU MaxxECU MINI - OEM-B77 13: A/C clutch relay (ACMG): no free relay_control/low_side/heater_low_side/ls_hs/injector rated ≥ 0.2 A on MaxxECU MaxxECU MINI - OEM-B78 10: EFI main relay control (M-REL): no free relay_control/low_side/heater_low_side/ls_hs/injector rated ≥ 0.2 A on MaxxECU MaxxECU MINI - OEM-B75 4: O2 sensor heater (HT): no free heater_low_side/low_side/relay_control/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 1: A/T shift solenoid 1 (S1): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 2: A/T shift solenoid 2 (S2): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 3: A/T shift solenoid 3 (S3): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 6: A/T shift solenoid 4 (S4): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B74 15: Wastegate VSV (PMC): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B74 5: Intake air bypass VSV (VSV1): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B75 3: Exhaust gas control VSV (VSV2): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B75 7: EVAP purge VSV (PRG): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 12: Exhaust bypass VSV (VSV3): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 13: A/T lock-up solenoid - (SLU-): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 14: A/T accumulator solenoid - (SLN-): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 15: A/T line-pressure solenoid - (SLT-): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 16: Fuel pressure-up VSV (FPU): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 7: A/T lock-up solenoid + (SLU+): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 8: A/T accumulator solenoid + (SLN+): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B76 9: A/T line-pressure solenoid + (SLT+): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B78 2: TRAC snow-mode light (SNOW): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B78 5: Fuel pump control (FPC): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B78 6: Check-engine light (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B79 1: TRAC enable light (IND): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B79 14: TRAC active light (CIND): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B79 17: A/T meter LCD (LPO3): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B79 18: A/T meter LCD (SPTL): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B79 19: Reverse buzzer (BZ): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B79 3: A/T meter LCD (LPO1): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B79 4: A/T meter LCD (LPO2): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-B77 20: Tachometer output (TACH): no free tacho/frequency_out/low_side/ls_hs on MaxxECU MaxxECU MINI - OEM-B75 10: Mass air flow (VG): no free maf/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B75 12: O2 sensor (OX): no free o2_narrowband/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B76 17: A/T oil temperature (OIL): no free thermistor/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B76 5: No.2 speed sensor (SP2+): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-B74 25: Igniter verification (IGF): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-B76 10: OD direct-clutch speed (NCO-): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-B76 4: OD direct-clutch speed (NCO+): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-B77 18: Rear right wheel speed (RRO): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-B77 19: Rear left wheel speed (RLO): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-B77 27: Road speed (RSPD): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-B78 4: Fuel pump diagnostic (DI): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-B79 7: Front right wheel speed (FRO): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-B79 8: Front left wheel speed (FLO): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-B75 21: A/T 1st-gear indicator (L): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B75 20: A/T 2nd-gear indicator (2): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B74 24: Neutral/park switch (NSW): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B75 8: Main oil pressure switch (MOPS): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B77 1: A/C request (AC): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B77 14: A/T shift down (SFTD): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B77 16: A/T reverse indicator (R): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B77 2: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B77 21: ABS active (ABS): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B77 26: Electrical load sense (ELS): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B77 4: A/T shift up (SFTU): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B77 5: Diagnostic/timing check (TC): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B77 6: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B77 7: A/T manual position (3): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B78 3: TRAC snow-mode switch (SNWI): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B79 2: TRAC off switch (MSW): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-B78 11: Serial diagnostic (SIL): no free k_line on MaxxECU MaxxECU MINI
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 |
| 3 | community_copy | wilbo666: 2JZ-GTE VVTi JZA80 Supra Engine Wiring (ECU pinout, B74-B79) | http://wilbo666.pbworks.com/w/page/57949268/2JZ-GTE%20VVTi%20JZA80%20Supra%20Engine%20Wiring | — | — | — |