Toyota Supra A80 1997-2002 JDM (2JZ-GTE VVT-i, single-turbo) → Emtron SL4 (auto)
Toyota Supra A80 1997-2002 JDM (2JZ-GTE VVT-i, single-turbo) — Emtron — SL4
⚠ 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 | 5: read the Findings page before cutting any wire |
| Size of the job | 60 wires · 12 connectors · 3 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 3-1447221-4 |
| 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 | SL4-A-34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-14V-1 | SL4-B-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-B74-21 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-B74-31 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-B74-9 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-B75-17 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | SL4-B-18 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | SL4-B-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-B74-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-B75-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-B75-19 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-B78-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | SL4-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-B75-2 | SL4-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-B74-23 | SL4-B-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | SL4-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-B74-10 | SL4-B-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | SL4-B-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-B74-28 | SL4-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-B74-27 | SL4-B-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-B74-11 | SL4-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-B74-12 | SL4-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-B74-13 | SL4-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-B75-5 | SL4-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B75-6 | SL4-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B74-1 | SL4-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-B74-2 | SL4-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-B74-3 | SL4-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-B74-4 | SL4-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-B74-30 | SP-SHD-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | SP-SHD-1 | SL4-B-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B78-9 | SL4-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-B74-17 | SL4-B-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-B74-18 | SL4-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-B74-19 | SL4-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-B74-20 | SL4-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-B75-9 | SL4-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-B75-15 | SL4-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-B75-23 | SL4-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-B75-16 | SL4-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-B75-24 | SL4-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-B75-14 | SL4-B-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-B77-13 | SL4-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-B78-10 | SL4-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-B75-4 | SL4-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-B76-1 | SL4-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-B76-2 | SL4-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-B75-10 | SL4-B-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-B75-12 | SL4-B-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-B75-22 | SL4-B-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-B76-17 | SL4-B-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-B77-25 | SL4-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-B76-11 | SL4-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-B76-5 | SL4-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-B74-25 | SL4-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-B76-10 | SL4-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-B76-4 | SL4-A-25 | 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 | SL4-B-10 | SL4-A-34 | open (OL) | sensor ground must not touch +12 V supply | |
| 2 | SL4-B-10 | SL4-B-2 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 3 | SL4-B-18 | SL4-A-34 | open (OL) | power ground must not touch +12 V supply | |
| 4 | SL4-B-18 | SL4-B-2 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | SL4-B-2 | SL4-A-34 | 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
OEM-B74
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 3 (#30) | — | W29 | — | 0.5 | SL4-A-3 | — | — | — |
| 10 | Cam position (G2) | — | W20 | — | 0.5 | SL4-B-7 | — | — | — |
| 11 | Ignition 1 (IGT, cyl 1&6) | — | W24 | — | 0.5 | SL4-A-26 | — | — | — |
| 12 | Ignition 2 (IGT2, cyl 5&2) | — | W25 | — | 0.5 | SL4-A-27 | — | — | — |
| 13 | Ignition 3 (IGT3, cyl 3&4) | — | W26 | — | 0.5 | SL4-A-28 | — | — | — |
| 15 | Wastegate VSV (PMC) | — | — | — | — | — | — | — | — |
| 17 | VVT-i OCV - (OCV-) | — | W36 | — | 0.5 | SL4-B-3 | — | — | — |
| 18 | VVT-i OCV + (OCV+) | — | W37 | — | 0.5 | SL4-A-14 | — | — | — |
| 19 | ETCS-i clutch - (CL-) | — | W38 | — | 0.5 | SL4-A-15 | — | — | — |
| 2 | Injector 4 (#40) | — | W30 | — | 0.5 | SL4-A-4 | — | — | — |
| 20 | ETCS-i clutch + (CL+) | — | W39 | — | 0.5 | SL4-A-16 | — | — | — |
| 21 | Power ground (E01) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 22 | Crank/cam sensor return (NE-) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 23 | Crank position (NE+) | — | W18 | — | 0.5 | SL4-B-5 | — | — | — |
| 24 | Neutral/park switch (NSW) | — | — | — | — | — | — | — | — |
| 25 | Igniter verification (IGF) | — | W58 | — | 0.5 | SL4-A-23 | — | — | — |
| 27 | Knock sensor 2 (KNK2, rear) | — | W23 | — | 0.5 | SL4-B-24 | — | — | — |
| 28 | Knock sensor 1 (KNK1, front) | — | W22 | — | 0.5 | SL4-B-16 | — | — | — |
| 3 | Injector 5 (#50) | — | W31 | — | 0.5 | SL4-A-1 | — | — | — |
| 30 | ETCS-i motor shield (GEO1) | — | W33 | — | 0.5 | SP-SHD-1 | — | — | — |
| 31 | Power ground (E02) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Injector 6 (#60) | — | W32 | — | 0.5 | SL4-A-2 | — | — | — |
| 5 | Intake air bypass VSV (VSV1) | — | — | — | — | — | — | — | — |
| 7 | ETCS-i motor - (M-) | — | — | — | — | — | — | — | — |
| 8 | ETCS-i motor + (M+) | — | — | — | — | — | — | — | — |
| 9 | ETCS-i ground (ME01) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
OEM-B75
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Mass air flow (VG) | — | W51 | — | 0.5 | SL4-B-20 | — | — | — |
| 12 | O2 sensor (OX) | — | W52 | — | 0.5 | SL4-B-21 | — | — | — |
| 14 | Coolant temperature (THW) | — | W45 | — | 0.5 | SL4-B-19 | — | — | — |
| 15 | Accelerator pedal 1 (VPA) | — | W41 | — | 0.5 | SL4-B-12 | — | — | — |
| 16 | Accelerator pedal 2 (VPA2) | — | W43 | — | 0.5 | SL4-B-14 | — | — | — |
| 17 | Power ground (E1) | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 18 | Sensor ground (E2) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | MAF ground (EVG) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Sensor power (VC) | — | W17 | — | 0.5 | SL4-B-2 | — | — | — |
| 20 | A/T 2nd-gear indicator (2) | — | — | — | — | — | — | — | — |
| 21 | A/T 1st-gear indicator (L) | — | — | — | — | — | — | — | — |
| 22 | Intake air temperature (THA) | — | W53 | — | 0.5 | SL4-B-22 | — | — | — |
| 23 | Throttle position 1 (VTA) | — | W42 | — | 0.5 | SL4-B-13 | — | — | — |
| 24 | Throttle position 2 (VTA2) | — | W44 | — | 0.5 | SL4-B-15 | — | — | — |
| 3 | Exhaust gas control VSV (VSV2) | — | — | — | — | — | — | — | — |
| 4 | O2 sensor heater (HT) | — | W48 | — | 0.5 | SL4-A-11 | — | — | — |
| 5 | Injector 1 (#10) | — | W27 | — | 0.5 | SL4-A-1 | — | — | — |
| 6 | Injector 2 (#20) | — | W28 | — | 0.5 | SL4-A-2 | — | — | — |
| 7 | EVAP purge VSV (PRG) | — | — | — | — | — | — | — | — |
| 8 | Main oil pressure switch (MOPS) | — | — | — | — | — | — | — | — |
| 9 | Manifold pressure (PIM) | — | W40 | — | 0.5 | SL4-B-11 | — | — | — |
OEM-B76
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | A/T shift solenoid 1 (S1) | — | W49 | — | 0.5 | SL4-A-12 | — | — | — |
| 10 | OD direct-clutch speed (NCO-) | — | W59 | — | 0.5 | SL4-A-24 | — | — | — |
| 11 | No.2 speed sensor return (SP2-) | — | W56 | — | 0.5 | SL4-A-21 | — | — | — |
| 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) | — | W54 | — | 0.5 | SL4-B-23 | — | — | — |
| 2 | A/T shift solenoid 2 (S2) | — | W50 | — | 0.5 | SL4-A-13 | — | — | — |
| 3 | A/T shift solenoid 3 (S3) | — | — | — | — | — | — | — | — |
| 4 | OD direct-clutch speed (NCO+) | — | W60 | — | 0.5 | SL4-A-25 | — | — | — |
| 5 | No.2 speed sensor (SP2+) | — | W57 | — | 0.5 | SL4-A-22 | — | — | — |
| 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) | — | W46 | — | 0.5 | SL4-A-17 | — | — | — |
| 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) | — | W55 | — | 0.5 | SL4-A-20 | — | — | — |
| 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) | — | W47 | — | 0.5 | SL4-A-10 | — | — | — |
| 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) | — | W15 | — | 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) | — | W35 | — | 0.5 | SL4-B-4 | — | — | — |
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) | — | — | — | — | — | — | — | — |
SL4-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injection channel 1 | — | W27 | — | 0.5 | OEM-B75-5 | — | — | — |
| 1 | Injection channel 1 | — | W31 | — | 0.5 | OEM-B74-3 | — | — | — |
| 2 | Injection channel 2 | — | W32 | — | 0.5 | OEM-B74-4 | — | — | — |
| 2 | Injection channel 2 | — | W28 | — | 0.5 | OEM-B75-6 | — | — | — |
| 3 | Injection channel 3 | — | W29 | — | 0.5 | OEM-B74-1 | — | — | — |
| 4 | Injection channel 4 | — | W30 | — | 0.5 | OEM-B74-2 | — | — | — |
| 5 | NC | — | — | — | — | — | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Sensor supply 8V | — | — | — | — | — | — | — | — |
| 10 | Auxiliary output 1 | — | W47 | — | 0.5 | OEM-B78-10 | — | — | — |
| 11 | Auxiliary output 2 | — | W48 | — | 0.5 | OEM-B75-4 | — | — | — |
| 12 | Auxiliary output 3 | — | W49 | — | 0.5 | OEM-B76-1 | — | — | — |
| 13 | Auxiliary output 4 | — | W50 | — | 0.5 | OEM-B76-2 | — | — | — |
| 14 | Auxiliary output 5 | — | W37 | — | 0.5 | OEM-B74-18 | — | — | — |
| 15 | Auxiliary output 6 | — | W38 | — | 0.5 | OEM-B74-19 | — | — | — |
| 16 | Auxiliary output 7 | — | W39 | — | 0.5 | OEM-B74-20 | — | — | — |
| 17 | Auxiliary output 8 | — | W46 | — | 0.5 | OEM-B77-13 | — | — | — |
| 18 | Auxiliary output 9 | — | — | — | — | — | — | — | — |
| 19 | Auxiliary output 10 | — | — | — | — | — | — | — | — |
| 20 | Digital input 1 | — | W55 | — | 0.5 | OEM-B77-25 | — | — | — |
| 21 | Digital input 2 | — | W56 | — | 0.5 | OEM-B76-11 | — | — | — |
| 22 | Digital input 3 | — | W57 | — | 0.5 | OEM-B76-5 | — | — | — |
| 23 | Digital input 4 | — | W58 | — | 0.5 | OEM-B74-25 | — | — | — |
| 24 | Digital input 5 | — | W59 | — | 0.5 | OEM-B76-10 | — | — | — |
| 25 | Digital input 6 | — | W60 | — | 0.5 | OEM-B76-4 | — | — | — |
| 26 | Ignition channel 1 | — | W24 | — | 0.5 | OEM-B74-11 | — | — | — |
| 27 | Ignition channel 2 | — | W25 | — | 0.5 | OEM-B74-12 | — | — | — |
| 28 | Ignition channel 3 | — | W26 | — | 0.5 | OEM-B74-13 | — | — | — |
| 29 | Ignition channel 4 | — | — | — | — | — | — | — | — |
| 30 | NC | — | — | — | — | — | — | — | — |
| 31 | NC | — | — | — | — | — | — | — | — |
| 32 | NC | — | — | — | — | — | — | — | — |
| 33 | NC | — | — | — | — | — | — | — | — |
| 34 | Aux 9–10 14V supply | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
SL4-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU 14V supply | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | Sensor supply Vref1 5.0V | — | W17 | — | 0.5 | OEM-B75-2 | — | — | — |
| 3 | EFI relay output (low side, 200 mA) | — | W36 | — | 0.5 | OEM-B74-17 | — | — | — |
| 4 | Ignition switch input | — | W35 | — | 0.5 | OEM-B78-9 | — | — | — |
| 5 | Crank index sensor + | — | W18 | — | 0.5 | OEM-B74-23 | — | — | — |
| 6 | Crank index sensor − | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | Sync sensor + | — | W20 | — | 0.5 | OEM-B74-10 | — | — | — |
| 8 | Sync sensor − | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 9 | Shield (crank/sync/knock) | — | W34 | — | 0.5 | SP-SHD-1 | — | — | — |
| 10 | Analog sensor 0V reference | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 11 | Analog input 1 | — | W40 | — | 0.5 | OEM-B75-9 | — | — | — |
| 12 | Analog input 2 | — | W41 | — | 0.5 | OEM-B75-15 | — | — | — |
| 13 | Analog input 3 | — | W42 | — | 0.5 | OEM-B75-23 | — | — | — |
| 14 | Analog input 4 | — | W43 | — | 0.5 | OEM-B75-16 | — | — | — |
| 15 | Analog input 5 | — | W44 | — | 0.5 | OEM-B75-24 | — | — | — |
| 16 | Knock 1 + | — | W22 | — | 0.5 | OEM-B74-28 | — | — | — |
| 17 | Knock 1 − | — | — | — | — | — | — | — | — |
| 18 | ECU ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 19 | Analog input 6 | — | W45 | — | 0.5 | OEM-B75-14 | — | — | — |
| 20 | Analog input 7 (switchable 1k pull-up) | — | W51 | — | 0.5 | OEM-B75-10 | — | — | — |
| 21 | Analog input 8 (switchable 1k pull-up) | — | W52 | — | 0.5 | OEM-B75-12 | — | — | — |
| 22 | Analog input 9 (switchable 1k pull-up) | — | W53 | — | 0.5 | OEM-B75-22 | — | — | — |
| 23 | Analog input 10 (switchable 1k pull-up) | — | W54 | — | 0.5 | OEM-B76-17 | — | — | — |
| 24 | Knock 2 + | — | W23 | — | 0.5 | OEM-B74-27 | — | — | — |
| 25 | Knock 2 − | — | — | — | — | — | — | — | — |
| 26 | ECU ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 27 | CAN 1 H | — | — | — | — | — | — | — | — |
| 28 | CAN 1 L | — | — | — | — | — | — | — | — |
| 29 | NC | — | — | — | — | — | — | — | — |
| 30 | NC | — | — | — | — | — | — | — | — |
| 31 | Ethernet Tx + | — | — | — | — | — | — | — | — |
| 32 | Ethernet Tx − | — | — | — | — | — | — | — | — |
| 33 | Ethernet Rx + | — | — | — | — | — | — | — | — |
| 34 | Ethernet Rx − | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W12 | — | 0.5 | OEM-B74-22 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-B75-18 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-B75-19 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-B78-22 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | SL4-B-10 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | SL4-B-6 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | SL4-B-8 | — | — | — |
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 | SL4-A-34 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | SL4-B-1 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W6 | — | 0.85 | OEM-B74-21 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-B74-31 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-B74-9 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-B75-17 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | SL4-B-18 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | SL4-B-26 | — | — | — |
SP-SHD
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W33 | — | 0.5 | OEM-B74-30 | — | — | — |
| 1 | — | — | W34 | — | 0.5 | SL4-B-9 | — | — | — |
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 | SL4-A-3 | Injection channel 3 | injector_out | single_source | |
| OEM-B74-10 | Cam position (G2) | trigger_in | SL4-B-7 | Sync sensor + | trigger_in | single_source | |
| OEM-B74-11 | Ignition 1 (IGT, cyl 1&6) | ignition_out | SL4-A-26 | Ignition channel 1 | ignition_out | single_source | |
| OEM-B74-12 | Ignition 2 (IGT2, cyl 5&2) | ignition_out | SL4-A-27 | Ignition channel 2 | ignition_out | single_source | |
| OEM-B74-13 | Ignition 3 (IGT3, cyl 3&4) | ignition_out | SL4-A-28 | Ignition channel 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 | SL4-B-3 | EFI relay output (low side, 200 mA) | low_side_out | single_source | |
| OEM-B74-18 | VVT-i OCV + (OCV+) | low_side_out | SL4-A-14 | Auxiliary output 5 | switch_out | single_source | |
| OEM-B74-19 | ETCS-i clutch - (CL-) | low_side_out | SL4-A-15 | Auxiliary output 6 | switch_out | single_source | |
| OEM-B74-2 | Injector 4 (#40) | injector_out | SL4-A-4 | Injection channel 4 | injector_out | single_source | |
| OEM-B74-20 | ETCS-i clutch + (CL+) | low_side_out | SL4-A-16 | Auxiliary output 7 | switch_out | single_source | |
| OEM-B74-21 | Power ground (E01) | ground | SL4-B-18 + SL4-B-26 | ECU ground + ECU ground | ground | single_source | |
| OEM-B74-22 | Crank/cam sensor return (NE-) | sensor_ground | SL4-B-10 + SL4-B-6 + SL4-B-8 | Analog sensor 0V reference + Crank index sensor − + Sync sensor − | sensor_ground + trigger_in | single_source | |
| OEM-B74-23 | Crank position (NE+) | trigger_in | SL4-B-5 | Crank index sensor + | trigger_in | single_source | |
| OEM-B74-24 | Neutral/park switch (NSW) | digital_in | — | — | — | single_source | |
| OEM-B74-25 | Igniter verification (IGF) | digital_in | SL4-A-23 | Digital input 4 | digital_in | single_source | |
| OEM-B74-27 | Knock sensor 2 (KNK2, rear) | knock_in | SL4-B-24 | Knock 2 + | knock_in | single_source | |
| OEM-B74-28 | Knock sensor 1 (KNK1, front) | knock_in | SL4-B-16 | Knock 1 + | knock_in | single_source | |
| OEM-B74-3 | Injector 5 (#50) | injector_out | SL4-A-1 | Injection channel 1 | injector_out | single_source | |
| OEM-B74-30 | ETCS-i motor shield (GEO1) | shield | SL4-B-9 | Shield (crank/sync/knock) | shield | single_source | |
| OEM-B74-31 | Power ground (E02) | ground | SL4-B-18 + SL4-B-26 | ECU ground + ECU ground | ground | single_source | |
| OEM-B74-4 | Injector 6 (#60) | injector_out | SL4-A-2 | Injection channel 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 | SL4-B-18 + SL4-B-26 | ECU ground + ECU ground | ground | single_source | |
| OEM-B75-10 | Mass air flow (VG) | analog_in | SL4-B-20 | Analog input 7 (switchable 1k pull-up) | analog_in | single_source | |
| OEM-B75-12 | O2 sensor (OX) | lambda_nb_in | SL4-B-21 | Analog input 8 (switchable 1k pull-up) | analog_in | single_source | |
| OEM-B75-14 | Coolant temperature (THW) | temp_in | SL4-B-19 | Analog input 6 | analog_in | single_source | |
| OEM-B75-15 | Accelerator pedal 1 (VPA) | analog_in | SL4-B-12 | Analog input 2 | analog_in | single_source | |
| OEM-B75-16 | Accelerator pedal 2 (VPA2) | analog_in | SL4-B-14 | Analog input 4 | analog_in | single_source | |
| OEM-B75-17 | Power ground (E1) | ground | SL4-B-18 + SL4-B-26 | ECU ground + ECU ground | ground | single_source | |
| OEM-B75-18 | Sensor ground (E2) | sensor_ground | SL4-B-10 + SL4-B-6 + SL4-B-8 | Analog sensor 0V reference + Crank index sensor − + Sync sensor − | sensor_ground + trigger_in | single_source | |
| OEM-B75-19 | MAF ground (EVG) | sensor_ground | SL4-B-10 + SL4-B-6 + SL4-B-8 | Analog sensor 0V reference + Crank index sensor − + Sync sensor − | sensor_ground + trigger_in | single_source | |
| OEM-B75-2 | Sensor power (VC) | vref | SL4-B-2 | Sensor supply Vref1 5.0V | 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 | SL4-B-22 | Analog input 9 (switchable 1k pull-up) | analog_in | single_source | |
| OEM-B75-23 | Throttle position 1 (VTA) | analog_in | SL4-B-13 | Analog input 3 | analog_in | single_source | |
| OEM-B75-24 | Throttle position 2 (VTA2) | analog_in | SL4-B-15 | Analog input 5 | 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 | SL4-A-11 | Auxiliary output 2 | switch_out | single_source | |
| OEM-B75-5 | Injector 1 (#10) | injector_out | SL4-A-1 | Injection channel 1 | injector_out | single_source | |
| OEM-B75-6 | Injector 2 (#20) | injector_out | SL4-A-2 | Injection channel 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 | SL4-B-11 | Analog input 1 | analog_in | single_source | |
| OEM-B76-1 | A/T shift solenoid 1 (S1) | low_side_out | SL4-A-12 | Auxiliary output 3 | switch_out | single_source | |
| OEM-B76-10 | OD direct-clutch speed (NCO-) | digital_in | SL4-A-24 | Digital input 5 | digital_in | single_source | |
| OEM-B76-11 | No.2 speed sensor return (SP2-) | digital_in | SL4-A-21 | Digital input 2 | 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 | SL4-B-23 | Analog input 10 (switchable 1k pull-up) | analog_in | single_source | |
| OEM-B76-2 | A/T shift solenoid 2 (S2) | low_side_out | SL4-A-13 | Auxiliary output 4 | switch_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 | SL4-A-25 | Digital input 6 | digital_in | single_source | |
| OEM-B76-5 | No.2 speed sensor (SP2+) | digital_in | SL4-A-22 | Digital input 3 | 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 | SL4-A-17 | Auxiliary output 8 | switch_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 | SL4-A-20 | Digital input 1 | 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 | SL4-A-10 | Auxiliary output 1 | switch_out | single_source | |
| OEM-B78-11 | Serial diagnostic (SIL) | serial | — | — | — | single_source | |
| OEM-B78-16 | EFI main relay power (+B) | power_in | SL4-A-34 + SL4-B-1 | Aux 9–10 14V supply + ECU 14V 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 | SL4-B-10 + SL4-B-6 + SL4-B-8 | Analog sensor 0V reference + Crank index sensor − + Sync sensor − | sensor_ground + trigger_in | 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 | SL4-A-34 + SL4-B-1 | Aux 9–10 14V supply + ECU 14V supply | power_in | single_source | |
| OEM-B78-8 | EFI main relay power (+B2) | power_in | SL4-A-34 + SL4-B-1 | Aux 9–10 14V supply + ECU 14V supply | power_in | single_source | |
| OEM-B78-9 | Ignition switch (IGSW) | digital_in | SL4-B-4 | Ignition switch input | 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 | SL4-A-34 | 0.85 | no route | Aux 9–10 14V supply | — | |
| W5 | SP-14V-1 | SL4-B-1 | 0.85 | no route | ECU 14V supply | — | |
| W6 | OEM-B74-21 | SP-GND-1 | 0.85 | no route | Power ground (E01) | — | |
| W7 | OEM-B74-31 | SP-GND-1 | 0.85 | no route | Power ground (E02) | — | |
| W8 | OEM-B74-9 | SP-GND-1 | 0.85 | no route | ETCS-i ground (ME01) | — | |
| W9 | OEM-B75-17 | SP-GND-1 | 0.85 | no route | Power ground (E1) | — | |
| W10 | SP-GND-1 | SL4-B-18 | 0.85 | no route | ECU ground | — | |
| W11 | SP-GND-1 | SL4-B-26 | 0.85 | no route | ECU ground | — | |
| W12 | OEM-B74-22 | SP-0V-1 | 0.5 | no route | Crank/cam sensor return (NE-) | — | |
| W13 | OEM-B75-18 | SP-0V-1 | 0.5 | no route | Sensor ground (E2) | — | |
| W14 | OEM-B75-19 | SP-0V-1 | 0.5 | no route | MAF ground (EVG) | — | |
| W15 | OEM-B78-22 | SP-0V-1 | 0.5 | no route | Switch ground (EC) | — | |
| W16 | SP-0V-1 | SL4-B-10 | 0.5 | no route | Analog sensor 0V reference | — | |
| W17 | OEM-B75-2 | SL4-B-2 | 0.5 | no route | Sensor power (VC) | — | |
| W18 | OEM-B74-23 | SL4-B-5 | 0.5 | no route | Crank position (NE+) | — | |
| W19 | SP-0V-1 | SL4-B-6 | 0.5 | no route | Crank index sensor − | — | |
| W20 | OEM-B74-10 | SL4-B-7 | 0.5 | no route | Cam position (G2) | — | |
| W21 | SP-0V-1 | SL4-B-8 | 0.5 | no route | Sync sensor − | — | |
| W22 | OEM-B74-28 | SL4-B-16 | 0.5 | no route | Knock sensor 1 (KNK1, front) | — | |
| W23 | OEM-B74-27 | SL4-B-24 | 0.5 | no route | Knock sensor 2 (KNK2, rear) | — | |
| W24 | OEM-B74-11 | SL4-A-26 | 0.5 | no route | Ignition 1 (IGT, cyl 1&6) | — | |
| W25 | OEM-B74-12 | SL4-A-27 | 0.5 | no route | Ignition 2 (IGT2, cyl 5&2) | — | |
| W26 | OEM-B74-13 | SL4-A-28 | 0.5 | no route | Ignition 3 (IGT3, cyl 3&4) | — | |
| W27 | OEM-B75-5 | SL4-A-1 | 0.5 | no route | Injector 1 (#10) | — | |
| W28 | OEM-B75-6 | SL4-A-2 | 0.5 | no route | Injector 2 (#20) | — | |
| W29 | OEM-B74-1 | SL4-A-3 | 0.5 | no route | Injector 3 (#30) | — | |
| W30 | OEM-B74-2 | SL4-A-4 | 0.5 | no route | Injector 4 (#40) | — | |
| W31 | OEM-B74-3 | SL4-A-1 | 0.5 | no route | Injector 5 (#50) | — | |
| W32 | OEM-B74-4 | SL4-A-2 | 0.5 | no route | Injector 6 (#60) | — | |
| W33 | OEM-B74-30 | SP-SHD-1 | 0.5 | no route | ETCS-i motor shield (GEO1) | — | |
| W34 | SP-SHD-1 | SL4-B-9 | 0.5 | no route | Shield (crank/sync/knock) | — | |
| W35 | OEM-B78-9 | SL4-B-4 | 0.5 | no route | Ignition switch (IGSW) | — | |
| W36 | OEM-B74-17 | SL4-B-3 | 0.5 | no route | VVT-i OCV - (OCV-) | — | |
| W37 | OEM-B74-18 | SL4-A-14 | 0.5 | no route | VVT-i OCV + (OCV+) | — | |
| W38 | OEM-B74-19 | SL4-A-15 | 0.5 | no route | ETCS-i clutch - (CL-) | — | |
| W39 | OEM-B74-20 | SL4-A-16 | 0.5 | no route | ETCS-i clutch + (CL+) | — | |
| W40 | OEM-B75-9 | SL4-B-11 | 0.5 | no route | Manifold pressure (PIM) | — | |
| W41 | OEM-B75-15 | SL4-B-12 | 0.5 | no route | Accelerator pedal 1 (VPA) | — | |
| W42 | OEM-B75-23 | SL4-B-13 | 0.5 | no route | Throttle position 1 (VTA) | — | |
| W43 | OEM-B75-16 | SL4-B-14 | 0.5 | no route | Accelerator pedal 2 (VPA2) | — | |
| W44 | OEM-B75-24 | SL4-B-15 | 0.5 | no route | Throttle position 2 (VTA2) | — | |
| W45 | OEM-B75-14 | SL4-B-19 | 0.5 | no route | Coolant temperature (THW) | — | |
| W46 | OEM-B77-13 | SL4-A-17 | 0.5 | no route | A/C clutch relay (ACMG) | — | |
| W47 | OEM-B78-10 | SL4-A-10 | 0.5 | no route | EFI main relay control (M-REL) | — | |
| W48 | OEM-B75-4 | SL4-A-11 | 0.5 | no route | O2 sensor heater (HT) | — | |
| W49 | OEM-B76-1 | SL4-A-12 | 0.5 | no route | A/T shift solenoid 1 (S1) | — | |
| W50 | OEM-B76-2 | SL4-A-13 | 0.5 | no route | A/T shift solenoid 2 (S2) | — | |
| W51 | OEM-B75-10 | SL4-B-20 | 0.5 | no route | Mass air flow (VG) | — | |
| W52 | OEM-B75-12 | SL4-B-21 | 0.5 | no route | O2 sensor (OX) | — | |
| W53 | OEM-B75-22 | SL4-B-22 | 0.5 | no route | Intake air temperature (THA) | — | |
| W54 | OEM-B76-17 | SL4-B-23 | 0.5 | no route | A/T oil temperature (OIL) | — | |
| W55 | OEM-B77-25 | SL4-A-20 | 0.5 | no route | No.1 speed sensor (SPD) | — | |
| W56 | OEM-B76-11 | SL4-A-21 | 0.5 | no route | No.2 speed sensor return (SP2-) | — | |
| W57 | OEM-B76-5 | SL4-A-22 | 0.5 | no route | No.2 speed sensor (SP2+) | — | |
| W58 | OEM-B74-25 | SL4-A-23 | 0.5 | no route | Igniter verification (IGF) | — | |
| W59 | OEM-B76-10 | SL4-A-24 | 0.5 | no route | OD direct-clutch speed (NCO-) | — | |
| W60 | OEM-B76-4 | SL4-A-25 | 0.5 | no route | OD direct-clutch speed (NCO+) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 1.000 | ea |
| connector | 4-1437290-1 | TE | Superseal 1.0 34-way plug, Key 2 | 1.000 | ea |
| terminal | 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 46.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (19)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | INJECTOR_BALLAST | SL4 | The 2JZ-GTE injectors (2JZ-GTE fuel injector) are low-impedance, but SL4 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 | OEM-B74-3 + OEM-B75-5 + SL4-A-1 | 2 different OEM functions share one net: OEM-B74-3 Injector 5 (#50); OEM-B75-5 Injector 1 (#10) |
| error | NET_MERGED | OEM-B74-4 + OEM-B75-6 + SL4-A-2 | 2 different OEM functions share one net: OEM-B74-4 Injector 6 (#60); OEM-B75-6 Injector 2 (#20) |
| 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. |
| 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 | NET_FAMILY | OEM-B74-18 ↔ SL4-A-14 | OEM-B74-18 "VVT-i OCV + (OCV+)" [low_side_out] is wired to SL4-A-14 "Auxiliary output 5" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-B74-19 ↔ SL4-A-15 | OEM-B74-19 "ETCS-i clutch - (CL-)" [low_side_out] is wired to SL4-A-15 "Auxiliary output 6" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-B74-20 ↔ SL4-A-16 | OEM-B74-20 "ETCS-i clutch + (CL+)" [low_side_out] is wired to SL4-A-16 "Auxiliary output 7" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-B75-14 ↔ SL4-B-19 | OEM-B75-14 "Coolant temperature (THW)" [temp_in] is wired to SL4-B-19 "Analog input 6" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-B75-22 ↔ SL4-B-22 | OEM-B75-22 "Intake air temperature (THA)" [temp_in] is wired to SL4-B-22 "Analog input 9 (switchable 1k pull-up)" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-B75-4 ↔ SL4-A-11 | OEM-B75-4 "O2 sensor heater (HT)" [low_side_out] is wired to SL4-A-11 "Auxiliary output 2" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-B76-1 ↔ SL4-A-12 | OEM-B76-1 "A/T shift solenoid 1 (S1)" [low_side_out] is wired to SL4-A-12 "Auxiliary output 3" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-B76-17 ↔ SL4-B-23 | OEM-B76-17 "A/T oil temperature (OIL)" [temp_in] is wired to SL4-B-23 "Analog input 10 (switchable 1k pull-up)" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-B76-2 ↔ SL4-A-13 | OEM-B76-2 "A/T shift solenoid 2 (S2)" [low_side_out] is wired to SL4-A-13 "Auxiliary output 4" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-B77-13 ↔ SL4-A-17 | OEM-B77-13 "A/C clutch relay (ACMG)" [low_side_out] is wired to SL4-A-17 "Auxiliary output 8" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-B78-10 ↔ SL4-A-10 | OEM-B78-10 "EFI main relay control (M-REL)" [low_side_out] is wired to SL4-A-10 "Auxiliary output 1" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | SL4-B-8 ↔ SL4-B-10 | SL4-B-8 "Sync sensor −" [trigger_in] is wired to SL4-B-10 "Analog sensor 0V reference" [sensor_ground]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 48 optional OEM pins are not mapped: OEM-B74-15 Wastegate VSV (PMC); OEM-B74-24 Neutral/park switch (NSW); OEM-B74-5 Intake air bypass VSV (VSV1); 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-B75-7 EVAP purge VSV (PRG); OEM-B75-8 Main oil pressure switch (MOPS); 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-B76-3 A/T shift solenoid 3 (S3); 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-B77-14 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-B78-11 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
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 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): Emtron SL4 has no battery-constant input; not needed - SL4-B 17: Knock 1 − left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors - SL4-B 25: Knock 2 − left open: the stock knock sensor has one ECU wire; check the ECU manual for single-wire knock sensors - OEM-B76 3: A/T shift solenoid 3 (S3): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B76 6: A/T shift solenoid 4 (S4): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B74 15: Wastegate VSV (PMC): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B74 5: Intake air bypass VSV (VSV1): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B75 3: Exhaust gas control VSV (VSV2): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B75 7: EVAP purge VSV (PRG): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B76 12: Exhaust bypass VSV (VSV3): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B76 13: A/T lock-up solenoid - (SLU-): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B76 14: A/T accumulator solenoid - (SLN-): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B76 15: A/T line-pressure solenoid - (SLT-): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B76 16: Fuel pressure-up VSV (FPU): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B76 7: A/T lock-up solenoid + (SLU+): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B76 8: A/T accumulator solenoid + (SLN+): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B76 9: A/T line-pressure solenoid + (SLT+): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B78 2: TRAC snow-mode light (SNOW): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B78 5: Fuel pump control (FPC): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B78 6: Check-engine light (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B79 1: TRAC enable light (IND): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B79 14: TRAC active light (CIND): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B79 17: A/T meter LCD (LPO3): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B79 18: A/T meter LCD (SPTL): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B79 19: Reverse buzzer (BZ): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B79 3: A/T meter LCD (LPO1): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B79 4: A/T meter LCD (LPO2): no free low_side/relay_control/heater_low_side/ls_hs/injector on Emtron SL4 - OEM-B77 20: Tachometer output (TACH): no free tacho/frequency_out/low_side/ls_hs on Emtron SL4 - OEM-B77 18: Rear right wheel speed (RRO): no free frequency_in/switch_in on Emtron SL4 - OEM-B77 19: Rear left wheel speed (RLO): no free frequency_in/switch_in on Emtron SL4 - OEM-B77 27: Road speed (RSPD): no free frequency_in/switch_in on Emtron SL4 - OEM-B78 4: Fuel pump diagnostic (DI): no free frequency_in/switch_in on Emtron SL4 - OEM-B79 7: Front right wheel speed (FRO): no free frequency_in/switch_in on Emtron SL4 - OEM-B79 8: Front left wheel speed (FLO): no free frequency_in/switch_in on Emtron SL4 - OEM-B75 21: A/T 1st-gear indicator (L): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B75 20: A/T 2nd-gear indicator (2): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B74 24: Neutral/park switch (NSW): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B75 8: Main oil pressure switch (MOPS): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B77 1: A/C request (AC): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B77 14: A/T shift down (SFTD): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B77 16: A/T reverse indicator (R): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B77 2: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B77 21: ABS active (ABS): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B77 26: Electrical load sense (ELS): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B77 4: A/T shift up (SFTU): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B77 5: Diagnostic/timing check (TC): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B77 6: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B77 7: A/T manual position (3): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B78 3: TRAC snow-mode switch (SNWI): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B79 2: TRAC off switch (MSW): no free switch_in/frequency_in/analog_0_5 on Emtron SL4 - OEM-B78 11: Serial diagnostic (SIL): no free k_line on Emtron SL4
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Emtron SL4/SL6/SL8 ECU datasheets | https://docs.emtronaustralia.com.au/engine-management/datasheets/index.html | archive | 2026-10-05 | 1e22846cec94 |
| 4 | vendor_doc | Emtron SL4/SL6/SL8 pinout pages | https://docs.emtronaustralia.com.au/engine-management/wiring/index.html | archive | 2026-10-05 | e52b3da9996a |
| 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 | — | — | — |