Lexus IS300 (XE10 / JCE10) 2001-05 2JZ-GE VVT-i → Haltech Nexus S3 HT-213000 (auto)
Lexus IS300 (XE10 / JCE10) 2001-05 2JZ-GE VVT-i — Haltech — Nexus S3
⚠ 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 | 2: read the Findings page before cutting any wire |
| Size of the job | 58 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-E2-13 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-E3-16 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-E3-7 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-E3-8 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-14V-1 | NEXUSS3-A-18 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | SP-14V-1 | NEXUSS3-A-25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-E6-17 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-E7-21 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | NEXUSS3-A-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | NEXUSS3-A-11 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-E6-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-E6-19 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-E7-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | NEXUSS3-C-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-E6-2 | NEXUSS3-C-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-E7-23 | NEXUSS3-C-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | NEXUSS3-C-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-E7-10 | NEXUSS3-C-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | NEXUSS3-C-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-E7-28 | NEXUSS3-C-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-E7-27 | NEXUSS3-C-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-E7-11 | NEXUSS3-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-E7-12 | NEXUSS3-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-E7-13 | NEXUSS3-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-E6-5 | NEXUSS3-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-E6-6 | NEXUSS3-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-E7-1 | NEXUSS3-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-E7-2 | NEXUSS3-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-E7-3 | NEXUSS3-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-E7-4 | NEXUSS3-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-E3-9 | NEXUSS3-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-E7-17 | NEXUSS3-A-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-E7-18 | NEXUSS3-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-E7-19 | NEXUSS3-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-E7-20 | NEXUSS3-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-E6-15 | NEXUSS3-C-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-E6-23 | NEXUSS3-C-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-E6-16 | NEXUSS3-C-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-E6-24 | NEXUSS3-C-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-E6-14 | NEXUSS3-C-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-E3-10 | NEXUSS3-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-E3-4 | NEXUSS3-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-E4-13 | NEXUSS3-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-E2-25 | NEXUSS3-C-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-E2-26 | NEXUSS3-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-E6-3 | NEXUSS3-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-E6-10 | NEXUSS3-C-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-E2-24 | NEXUSS3-C-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-E4-8 | NEXUSS3-C-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-E6-11 | NEXUSS3-C-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-E6-12 | NEXUSS3-C-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-E6-22 | NEXUSS3-C-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-E5-11 | NEXUSS3-C-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-E5-5 | NEXUSS3-C-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-E7-25 | NEXUSS3-C-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-E4-2 | NEXUSS3-C-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-E4-5 | NEXUSS3-C-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-E4-6 | NEXUSS3-C-20 | 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 | NEXUSS3-A-18 | NEXUSS3-A-10 | open (OL) | +12 V supply must not touch power ground | |
| 2 | NEXUSS3-A-18 | NEXUSS3-C-2 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | NEXUSS3-A-10 | NEXUSS3-C-25 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | NEXUSS3-A-18 | NEXUSS3-C-25 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 5 | NEXUSS3-C-2 | NEXUSS3-C-25 | open (OL) | sensor ground must not touch 5 V sensor reference |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
NEXUSS3-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 | — | W25 | — | 0.5 | OEM-E6-5 | — | — | — |
| 10 | Battery ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | Battery ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 12 | DPO 2 | — | W33 | — | 0.5 | OEM-E7-18 | — | — | — |
| 13 | Ignition switch input | — | W31 | — | 0.5 | OEM-E3-9 | — | — | — |
| 14 | DPO 3 | — | W34 | — | 0.5 | OEM-E7-19 | — | — | — |
| 15 | DPO 4 | — | W35 | — | 0.5 | OEM-E7-20 | — | — | — |
| 16 | DPO 5 | — | W42 | — | 0.5 | OEM-E3-4 | — | — | — |
| 17 | DPO 6 | — | W43 | — | 0.5 | OEM-E4-13 | — | — | — |
| 18 | +12V switched input | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| 19 | HBO 1 | — | — | — | — | — | — | — | — |
| 2 | Injector 2 | — | W26 | — | 0.5 | OEM-E6-6 | — | — | — |
| 20 | HBO 2 | — | — | — | — | — | — | — | — |
| 21 | HBO 3 | — | — | — | — | — | — | — | — |
| 22 | HBO 4 | — | — | — | — | — | — | — | — |
| 23 | CAN 1 High | — | — | — | — | — | — | — | — |
| 24 | CAN 1 Low | — | — | — | — | — | — | — | — |
| 25 | +12V switched input | — | W6 | — | 0.85 | SP-14V-1 | — | — | — |
| 26 | ECR output | — | W41 | — | 0.5 | OEM-E3-10 | — | — | — |
| 27 | Ignition 1 | — | W22 | — | 0.5 | OEM-E7-11 | — | — | — |
| 28 | Ignition 2 | — | W23 | — | 0.5 | OEM-E7-12 | — | — | — |
| 29 | Ignition 3 | — | W24 | — | 0.5 | OEM-E7-13 | — | — | — |
| 3 | Injector 3 | — | W27 | — | 0.5 | OEM-E7-1 | — | — | — |
| 30 | Ignition 4 | — | — | — | — | — | — | — | — |
| 31 | Ignition 5 | — | — | — | — | — | — | — | — |
| 32 | Ignition 6 | — | — | — | — | — | — | — | — |
| 33 | Ignition 7 | — | — | — | — | — | — | — | — |
| 34 | Ignition 8 | — | — | — | — | — | — | — | — |
| 4 | Injector 4 | — | W28 | — | 0.5 | OEM-E7-2 | — | — | — |
| 5 | Injector 5 | — | W29 | — | 0.5 | OEM-E7-3 | — | — | — |
| 6 | Injector 6 | — | W30 | — | 0.5 | OEM-E7-4 | — | — | — |
| 7 | Injector 7 | — | W45 | — | 0.5 | OEM-E2-26 | — | — | — |
| 8 | Injector 8 | — | W46 | — | 0.5 | OEM-E6-3 | — | — | — |
| 9 | DPO 1 | — | W32 | — | 0.5 | OEM-E7-17 | — | — | — |
NEXUSS3-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Trigger + | — | W16 | — | 0.5 | OEM-E7-23 | — | — | — |
| 10 | AVI 1 | — | W36 | — | 0.5 | OEM-E6-15 | — | — | — |
| 11 | AVI 2 | — | W37 | — | 0.5 | OEM-E6-23 | — | — | — |
| 12 | AVI 3 | — | W38 | — | 0.5 | OEM-E6-16 | — | — | — |
| 13 | AVI 4 | — | W39 | — | 0.5 | OEM-E6-24 | — | — | — |
| 14 | AVI 5 | — | W40 | — | 0.5 | OEM-E6-14 | — | — | — |
| 15 | AVI 6 | — | W47 | — | 0.5 | OEM-E6-10 | — | — | — |
| 16 | AVI 7 | — | W48 | — | 0.5 | OEM-E2-24 | — | — | — |
| 17 | AVI 8 | — | W49 | — | 0.5 | OEM-E4-8 | — | — | — |
| 18 | AVI 9 | — | W50 | — | 0.5 | OEM-E6-11 | — | — | — |
| 19 | SPI 5 | — | W57 | — | 0.5 | OEM-E4-5 | — | — | — |
| 2 | Trigger - | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 20 | SPI 6 | — | W58 | — | 0.5 | OEM-E4-6 | — | — | — |
| 21 | CAN 2 High | — | — | — | — | — | — | — | — |
| 22 | CAN 2 Low | — | — | — | — | — | — | — | — |
| 23 | Knock 1 | — | W20 | — | 0.5 | OEM-E7-28 | — | — | — |
| 24 | Knock 2 | — | W21 | — | 0.5 | OEM-E7-27 | — | — | — |
| 25 | +5V | — | W15 | — | 0.5 | OEM-E6-2 | — | — | — |
| 26 | Signal ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 27 | AVI 10 | — | W51 | — | 0.5 | OEM-E6-12 | — | — | — |
| 28 | AVI 11 | — | W52 | — | 0.5 | OEM-E6-22 | — | — | — |
| 29 | WBI 1 Heater + | — | — | — | — | — | — | — | — |
| 3 | Home + | — | W18 | — | 0.5 | OEM-E7-10 | — | — | — |
| 30 | WBI 1 Input | — | — | — | — | — | — | — | — |
| 31 | WBI 1 Pump | — | — | — | — | — | — | — | — |
| 32 | WBI 1 Nernst | — | — | — | — | — | — | — | — |
| 33 | WBI 1 Heater - | — | W44 | — | 0.5 | OEM-E2-25 | — | — | — |
| 34 | WBI 1 Cal | — | — | — | — | — | — | — | — |
| 4 | Home - | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | SPI 1 | — | W53 | — | 0.5 | OEM-E5-11 | — | — | — |
| 6 | SPI 2 | — | W54 | — | 0.5 | OEM-E5-5 | — | — | — |
| 7 | SPI 3 | — | W55 | — | 0.5 | OEM-E7-25 | — | — | — |
| 8 | SPI 4 | — | W56 | — | 0.5 | OEM-E4-2 | — | — | — |
| 9 | +8V | — | — | — | — | — | — | — | — |
OEM-E2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 13 | ETCS power (TBP, throttle bypass) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 24 | O2 right rear (OXR2) | — | W48 | — | 0.5 | NEXUSS3-C-16 | — | — | — |
| 25 | O2 heater right rear (HTR2) | — | W44 | — | 0.5 | NEXUSS3-C-33 | — | — | — |
| 26 | O2 heater left rear (HTL2) | — | W45 | — | 0.5 | NEXUSS3-A-7 | — | — | — |
OEM-E3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Battery constant (BATT) | — | — | — | — | — | — | — | — |
| 10 | EFI main relay control (MREL) | — | W41 | — | 0.5 | NEXUSS3-A-26 | — | — | — |
| 11 | Serial diagnostic (SIL) | — | — | — | — | — | — | — | — |
| 16 | EFI main relay (+B) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Fuel pump relay (FPR) | — | W42 | — | 0.5 | NEXUSS3-A-16 | — | — | — |
| 5 | Fuel pump control (FC) | — | — | — | — | — | — | — | — |
| 6 | Check-engine lamp (W) | — | — | — | — | — | — | — | — |
| 7 | ETCS main relay (+BM) | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 8 | EFI main relay (+B2) | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 9 | Ignition switch (IGSW) | — | W31 | — | 0.5 | NEXUSS3-A-13 | — | — | — |
OEM-E4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 13 | A/C clutch relay (ACMG) | — | W43 | — | 0.5 | NEXUSS3-A-17 | — | — | — |
| 18 | EVAP vapor pressure (PTNK) | — | — | — | — | — | — | — | — |
| 2 | Starter signal (STA) | — | W56 | — | 0.5 | NEXUSS3-C-8 | — | — | — |
| 5 | Diagnostic/timing check (TC) | — | W57 | — | 0.5 | NEXUSS3-C-19 | — | — | — |
| 6 | Stop light switch (STP) | — | W58 | — | 0.5 | NEXUSS3-C-20 | — | — | — |
| 8 | O2 left rear (OXL2) | — | W49 | — | 0.5 | NEXUSS3-C-17 | — | — | — |
OEM-E5
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 11 | Vehicle speed sensor (SP2-) | — | W53 | — | 0.5 | NEXUSS3-C-5 | — | — | — |
| 12 | Canister close valve (CCV) | — | — | — | — | — | — | — | — |
| 5 | Vehicle speed sensor (SP2+) | — | W54 | — | 0.5 | NEXUSS3-C-6 | — | — | — |
OEM-E6
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Mass air flow (VG) | — | W47 | — | 0.5 | NEXUSS3-C-15 | — | — | — |
| 11 | O2 right front (OXR1) | — | W50 | — | 0.5 | NEXUSS3-C-18 | — | — | — |
| 12 | O2 left front (OXL1) | — | W51 | — | 0.5 | NEXUSS3-C-27 | — | — | — |
| 14 | Coolant temperature (THW) | — | W40 | — | 0.5 | NEXUSS3-C-14 | — | — | — |
| 15 | Accelerator pedal 1 (VPA) | — | W36 | — | 0.5 | NEXUSS3-C-10 | — | — | — |
| 16 | Accelerator pedal 2 (VPA2) | — | W38 | — | 0.5 | NEXUSS3-C-12 | — | — | — |
| 17 | Power ground (E1) | — | W7 | — | 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 supply +5V (VC) | — | W15 | — | 0.5 | NEXUSS3-C-25 | — | — | — |
| 22 | Intake air temperature (THA) | — | W52 | — | 0.5 | NEXUSS3-C-28 | — | — | — |
| 23 | Throttle position 1 (VTA) | — | W37 | — | 0.5 | NEXUSS3-C-11 | — | — | — |
| 24 | Throttle position 2 (VTA2) | — | W39 | — | 0.5 | NEXUSS3-C-13 | — | — | — |
| 3 | O2 heater right front (HTR) | — | W46 | — | 0.5 | NEXUSS3-A-8 | — | — | — |
| 4 | O2 heater left front (HTL) | — | — | — | — | — | — | — | — |
| 5 | Injector 1 (#10) | — | W25 | — | 0.5 | NEXUSS3-A-1 | — | — | — |
| 6 | Injector 2 (#20) | — | W26 | — | 0.5 | NEXUSS3-A-2 | — | — | — |
| 7 | EVAP purge VSV (PRG) | — | — | — | — | — | — | — | — |
OEM-E7
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 3 (#30) | — | W27 | — | 0.5 | NEXUSS3-A-3 | — | — | — |
| 10 | Cam position (G2) | — | W18 | — | 0.5 | NEXUSS3-C-3 | — | — | — |
| 11 | Ignition 1 (IGT) | — | W22 | — | 0.5 | NEXUSS3-A-27 | — | — | — |
| 12 | Ignition 2 (IGT2) | — | W23 | — | 0.5 | NEXUSS3-A-28 | — | — | — |
| 13 | Ignition 3 (IGT3) | — | W24 | — | 0.5 | NEXUSS3-A-29 | — | — | — |
| 17 | VVT-i OCV - (OCV-) | — | W32 | — | 0.5 | NEXUSS3-A-9 | — | — | — |
| 18 | VVT-i OCV + (OCV+) | — | W33 | — | 0.5 | NEXUSS3-A-12 | — | — | — |
| 19 | ETCS throttle clutch - (CL-) | — | W34 | — | 0.5 | NEXUSS3-A-14 | — | — | — |
| 2 | Injector 4 (#40) | — | W28 | — | 0.5 | NEXUSS3-A-4 | — | — | — |
| 20 | ETCS throttle clutch + (CL+) | — | W35 | — | 0.5 | NEXUSS3-A-15 | — | — | — |
| 21 | Power ground (E01) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 22 | Crank position return (NE-) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 23 | Crank position (NE) | — | W16 | — | 0.5 | NEXUSS3-C-1 | — | — | — |
| 25 | Igniter feedback (IGF) | — | W55 | — | 0.5 | NEXUSS3-C-7 | — | — | — |
| 27 | Knock sensor 2 (KNK2) | — | W21 | — | 0.5 | NEXUSS3-C-24 | — | — | — |
| 28 | Knock sensor 1 (KNK1) | — | W20 | — | 0.5 | NEXUSS3-C-23 | — | — | — |
| 3 | Injector 5 (#50) | — | W29 | — | 0.5 | NEXUSS3-A-5 | — | — | — |
| 4 | Injector 6 (#60) | — | W30 | — | 0.5 | NEXUSS3-A-6 | — | — | — |
| 5 | ACIS intake VSV | — | — | — | — | — | — | — | — |
| 7 | ETCS throttle motor - (M-) | — | — | — | — | — | — | — | — |
| 8 | ETCS throttle motor + (M+) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | OEM-E6-18 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-E6-19 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-E7-22 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | NEXUSS3-C-26 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | NEXUSS3-C-2 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | NEXUSS3-C-4 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-E2-13 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-E3-16 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | OEM-E3-7 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | OEM-E3-8 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | NEXUSS3-A-18 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | NEXUSS3-A-25 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W7 | — | 0.85 | OEM-E6-17 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-E7-21 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | NEXUSS3-A-10 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | NEXUSS3-A-11 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-E2-13 | ETCS power (TBP, throttle bypass) | power_in | NEXUSS3-A-18 + NEXUSS3-A-25 | +12V switched input + +12V switched input | power_in | single_source | |
| OEM-E2-24 | O2 right rear (OXR2) | lambda_nb_in | NEXUSS3-C-16 | AVI 7 | analog_in | single_source | |
| OEM-E2-25 | O2 heater right rear (HTR2) | low_side_out | NEXUSS3-C-33 | WBI 1 Heater - | low_side_out | single_source | |
| OEM-E2-26 | O2 heater left rear (HTL2) | low_side_out | NEXUSS3-A-7 | Injector 7 | injector_out | single_source | |
| OEM-E3-1 | Battery constant (BATT) | power_in | — | — | — | single_source | |
| OEM-E3-10 | EFI main relay control (MREL) | low_side_out | NEXUSS3-A-26 | ECR output | low_side_out | single_source | |
| OEM-E3-11 | Serial diagnostic (SIL) | serial | — | — | — | single_source | |
| OEM-E3-16 | EFI main relay (+B) | power_in | NEXUSS3-A-18 + NEXUSS3-A-25 | +12V switched input + +12V switched input | power_in | single_source | |
| OEM-E3-4 | Fuel pump relay (FPR) | low_side_out | NEXUSS3-A-16 | DPO 5 | low_side_out | single_source | |
| OEM-E3-5 | Fuel pump control (FC) | low_side_out | — | — | — | single_source | |
| OEM-E3-6 | Check-engine lamp (W) | low_side_out | — | — | — | single_source | |
| OEM-E3-7 | ETCS main relay (+BM) | power_in | NEXUSS3-A-18 + NEXUSS3-A-25 | +12V switched input + +12V switched input | power_in | single_source | |
| OEM-E3-8 | EFI main relay (+B2) | power_in | NEXUSS3-A-18 + NEXUSS3-A-25 | +12V switched input + +12V switched input | power_in | single_source | |
| OEM-E3-9 | Ignition switch (IGSW) | digital_in | NEXUSS3-A-13 | Ignition switch input | digital_in | single_source | |
| OEM-E4-13 | A/C clutch relay (ACMG) | low_side_out | NEXUSS3-A-17 | DPO 6 | low_side_out | single_source | |
| OEM-E4-18 | EVAP vapor pressure (PTNK) | analog_in | — | — | — | single_source | |
| OEM-E4-2 | Starter signal (STA) | digital_in | NEXUSS3-C-8 | SPI 4 | digital_in | single_source | |
| OEM-E4-5 | Diagnostic/timing check (TC) | digital_in | NEXUSS3-C-19 | SPI 5 | digital_in | single_source | |
| OEM-E4-6 | Stop light switch (STP) | digital_in | NEXUSS3-C-20 | SPI 6 | digital_in | single_source | |
| OEM-E4-8 | O2 left rear (OXL2) | lambda_nb_in | NEXUSS3-C-17 | AVI 8 | analog_in | single_source | |
| OEM-E5-11 | Vehicle speed sensor (SP2-) | digital_in | NEXUSS3-C-5 | SPI 1 | digital_in | single_source | |
| OEM-E5-12 | Canister close valve (CCV) | low_side_out | — | — | — | single_source | |
| OEM-E5-5 | Vehicle speed sensor (SP2+) | digital_in | NEXUSS3-C-6 | SPI 2 | digital_in | single_source | |
| OEM-E6-10 | Mass air flow (VG) | analog_in | NEXUSS3-C-15 | AVI 6 | analog_in | single_source | |
| OEM-E6-11 | O2 right front (OXR1) | lambda_nb_in | NEXUSS3-C-18 | AVI 9 | analog_in | single_source | |
| OEM-E6-12 | O2 left front (OXL1) | lambda_nb_in | NEXUSS3-C-27 | AVI 10 | analog_in | single_source | |
| OEM-E6-14 | Coolant temperature (THW) | temp_in | NEXUSS3-C-14 | AVI 5 | analog_in | single_source | |
| OEM-E6-15 | Accelerator pedal 1 (VPA) | analog_in | NEXUSS3-C-10 | AVI 1 | analog_in | single_source | |
| OEM-E6-16 | Accelerator pedal 2 (VPA2) | analog_in | NEXUSS3-C-12 | AVI 3 | analog_in | single_source | |
| OEM-E6-17 | Power ground (E1) | ground | NEXUSS3-A-10 + NEXUSS3-A-11 | Battery ground + Battery ground | ground | single_source | |
| OEM-E6-18 | Sensor ground (E2) | sensor_ground | NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4 | Trigger - + Signal ground + Home - | sensor_ground + trigger_in | single_source | |
| OEM-E6-19 | MAF ground (EVG) | sensor_ground | NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4 | Trigger - + Signal ground + Home - | sensor_ground + trigger_in | single_source | |
| OEM-E6-2 | Sensor supply +5V (VC) | vref | NEXUSS3-C-25 | +5V | vref | single_source | |
| OEM-E6-22 | Intake air temperature (THA) | temp_in | NEXUSS3-C-28 | AVI 11 | analog_in | single_source | |
| OEM-E6-23 | Throttle position 1 (VTA) | analog_in | NEXUSS3-C-11 | AVI 2 | analog_in | single_source | |
| OEM-E6-24 | Throttle position 2 (VTA2) | analog_in | NEXUSS3-C-13 | AVI 4 | analog_in | single_source | |
| OEM-E6-3 | O2 heater right front (HTR) | low_side_out | NEXUSS3-A-8 | Injector 8 | injector_out | single_source | |
| OEM-E6-4 | O2 heater left front (HTL) | low_side_out | — | — | — | single_source | |
| OEM-E6-5 | Injector 1 (#10) | injector_out | NEXUSS3-A-1 | Injector 1 | injector_out | single_source | |
| OEM-E6-6 | Injector 2 (#20) | injector_out | NEXUSS3-A-2 | Injector 2 | injector_out | single_source | |
| OEM-E6-7 | EVAP purge VSV (PRG) | low_side_out | — | — | — | single_source | |
| OEM-E7-1 | Injector 3 (#30) | injector_out | NEXUSS3-A-3 | Injector 3 | injector_out | single_source | |
| OEM-E7-10 | Cam position (G2) | trigger_in | NEXUSS3-C-3 | Home + | trigger_in | single_source | |
| OEM-E7-11 | Ignition 1 (IGT) | ignition_out | NEXUSS3-A-27 | Ignition 1 | ignition_out | single_source | |
| OEM-E7-12 | Ignition 2 (IGT2) | ignition_out | NEXUSS3-A-28 | Ignition 2 | ignition_out | single_source | |
| OEM-E7-13 | Ignition 3 (IGT3) | ignition_out | NEXUSS3-A-29 | Ignition 3 | ignition_out | single_source | |
| OEM-E7-17 | VVT-i OCV - (OCV-) | low_side_out | NEXUSS3-A-9 | DPO 1 | low_side_out | single_source | |
| OEM-E7-18 | VVT-i OCV + (OCV+) | low_side_out | NEXUSS3-A-12 | DPO 2 | low_side_out | single_source | |
| OEM-E7-19 | ETCS throttle clutch - (CL-) | low_side_out | NEXUSS3-A-14 | DPO 3 | low_side_out | single_source | |
| OEM-E7-2 | Injector 4 (#40) | injector_out | NEXUSS3-A-4 | Injector 4 | injector_out | single_source | |
| OEM-E7-20 | ETCS throttle clutch + (CL+) | low_side_out | NEXUSS3-A-15 | DPO 4 | low_side_out | single_source | |
| OEM-E7-21 | Power ground (E01) | ground | NEXUSS3-A-10 + NEXUSS3-A-11 | Battery ground + Battery ground | ground | single_source | |
| OEM-E7-22 | Crank position return (NE-) | sensor_ground | NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4 | Trigger - + Signal ground + Home - | sensor_ground + trigger_in | single_source | |
| OEM-E7-23 | Crank position (NE) | trigger_in | NEXUSS3-C-1 | Trigger + | trigger_in | single_source | |
| OEM-E7-25 | Igniter feedback (IGF) | digital_in | NEXUSS3-C-7 | SPI 3 | digital_in | single_source | |
| OEM-E7-27 | Knock sensor 2 (KNK2) | knock_in | NEXUSS3-C-24 | Knock 2 | knock_in | single_source | |
| OEM-E7-28 | Knock sensor 1 (KNK1) | knock_in | NEXUSS3-C-23 | Knock 1 | knock_in | single_source | |
| OEM-E7-3 | Injector 5 (#50) | injector_out | NEXUSS3-A-5 | Injector 5 | injector_out | single_source | |
| OEM-E7-4 | Injector 6 (#60) | injector_out | NEXUSS3-A-6 | Injector 6 | injector_out | single_source | |
| OEM-E7-5 | ACIS intake VSV | low_side_out | — | — | — | single_source | |
| OEM-E7-7 | ETCS throttle motor - (M-) | hbridge_out | — | — | — | single_source | |
| OEM-E7-8 | ETCS throttle motor + (M+) | hbridge_out | — | — | — | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-E2-13 | SP-14V-1 | 0.85 | no route | ETCS power (TBP, throttle bypass) | — | |
| W2 | OEM-E3-16 | SP-14V-1 | 0.85 | no route | EFI main relay (+B) | — | |
| W3 | OEM-E3-7 | SP-14V-1 | 0.85 | no route | ETCS main relay (+BM) | — | |
| W4 | OEM-E3-8 | SP-14V-1 | 0.85 | no route | EFI main relay (+B2) | — | |
| W5 | SP-14V-1 | NEXUSS3-A-18 | 0.85 | no route | +12V switched input | — | |
| W6 | SP-14V-1 | NEXUSS3-A-25 | 0.85 | no route | +12V switched input | — | |
| W7 | OEM-E6-17 | SP-GND-1 | 0.85 | no route | Power ground (E1) | — | |
| W8 | OEM-E7-21 | SP-GND-1 | 0.85 | no route | Power ground (E01) | — | |
| W9 | SP-GND-1 | NEXUSS3-A-10 | 0.85 | no route | Battery ground | — | |
| W10 | SP-GND-1 | NEXUSS3-A-11 | 0.85 | no route | Battery ground | — | |
| W11 | OEM-E6-18 | SP-0V-1 | 0.5 | no route | Sensor ground (E2) | — | |
| W12 | OEM-E6-19 | SP-0V-1 | 0.5 | no route | MAF ground (EVG) | — | |
| W13 | OEM-E7-22 | SP-0V-1 | 0.5 | no route | Crank position return (NE-) | — | |
| W14 | SP-0V-1 | NEXUSS3-C-26 | 0.5 | no route | Signal ground | — | |
| W15 | OEM-E6-2 | NEXUSS3-C-25 | 0.5 | no route | Sensor supply +5V (VC) | — | |
| W16 | OEM-E7-23 | NEXUSS3-C-1 | 0.5 | no route | Crank position (NE) | — | |
| W17 | SP-0V-1 | NEXUSS3-C-2 | 0.5 | no route | Trigger - | — | |
| W18 | OEM-E7-10 | NEXUSS3-C-3 | 0.5 | no route | Cam position (G2) | — | |
| W19 | SP-0V-1 | NEXUSS3-C-4 | 0.5 | no route | Home - | — | |
| W20 | OEM-E7-28 | NEXUSS3-C-23 | 0.5 | no route | Knock sensor 1 (KNK1) | — | |
| W21 | OEM-E7-27 | NEXUSS3-C-24 | 0.5 | no route | Knock sensor 2 (KNK2) | — | |
| W22 | OEM-E7-11 | NEXUSS3-A-27 | 0.5 | no route | Ignition 1 (IGT) | — | |
| W23 | OEM-E7-12 | NEXUSS3-A-28 | 0.5 | no route | Ignition 2 (IGT2) | — | |
| W24 | OEM-E7-13 | NEXUSS3-A-29 | 0.5 | no route | Ignition 3 (IGT3) | — | |
| W25 | OEM-E6-5 | NEXUSS3-A-1 | 0.5 | no route | Injector 1 (#10) | — | |
| W26 | OEM-E6-6 | NEXUSS3-A-2 | 0.5 | no route | Injector 2 (#20) | — | |
| W27 | OEM-E7-1 | NEXUSS3-A-3 | 0.5 | no route | Injector 3 (#30) | — | |
| W28 | OEM-E7-2 | NEXUSS3-A-4 | 0.5 | no route | Injector 4 (#40) | — | |
| W29 | OEM-E7-3 | NEXUSS3-A-5 | 0.5 | no route | Injector 5 (#50) | — | |
| W30 | OEM-E7-4 | NEXUSS3-A-6 | 0.5 | no route | Injector 6 (#60) | — | |
| W31 | OEM-E3-9 | NEXUSS3-A-13 | 0.5 | no route | Ignition switch (IGSW) | — | |
| W32 | OEM-E7-17 | NEXUSS3-A-9 | 0.5 | no route | VVT-i OCV - (OCV-) | — | |
| W33 | OEM-E7-18 | NEXUSS3-A-12 | 0.5 | no route | VVT-i OCV + (OCV+) | — | |
| W34 | OEM-E7-19 | NEXUSS3-A-14 | 0.5 | no route | ETCS throttle clutch - (CL-) | — | |
| W35 | OEM-E7-20 | NEXUSS3-A-15 | 0.5 | no route | ETCS throttle clutch + (CL+) | — | |
| W36 | OEM-E6-15 | NEXUSS3-C-10 | 0.5 | no route | Accelerator pedal 1 (VPA) | — | |
| W37 | OEM-E6-23 | NEXUSS3-C-11 | 0.5 | no route | Throttle position 1 (VTA) | — | |
| W38 | OEM-E6-16 | NEXUSS3-C-12 | 0.5 | no route | Accelerator pedal 2 (VPA2) | — | |
| W39 | OEM-E6-24 | NEXUSS3-C-13 | 0.5 | no route | Throttle position 2 (VTA2) | — | |
| W40 | OEM-E6-14 | NEXUSS3-C-14 | 0.5 | no route | Coolant temperature (THW) | — | |
| W41 | OEM-E3-10 | NEXUSS3-A-26 | 0.5 | no route | EFI main relay control (MREL) | — | |
| W42 | OEM-E3-4 | NEXUSS3-A-16 | 0.5 | no route | Fuel pump relay (FPR) | — | |
| W43 | OEM-E4-13 | NEXUSS3-A-17 | 0.5 | no route | A/C clutch relay (ACMG) | — | |
| W44 | OEM-E2-25 | NEXUSS3-C-33 | 0.5 | no route | O2 heater right rear (HTR2) | — | |
| W45 | OEM-E2-26 | NEXUSS3-A-7 | 0.5 | no route | O2 heater left rear (HTL2) | — | |
| W46 | OEM-E6-3 | NEXUSS3-A-8 | 0.5 | no route | O2 heater right front (HTR) | — | |
| W47 | OEM-E6-10 | NEXUSS3-C-15 | 0.5 | no route | Mass air flow (VG) | — | |
| W48 | OEM-E2-24 | NEXUSS3-C-16 | 0.5 | no route | O2 right rear (OXR2) | — | |
| W49 | OEM-E4-8 | NEXUSS3-C-17 | 0.5 | no route | O2 left rear (OXL2) | — | |
| W50 | OEM-E6-11 | NEXUSS3-C-18 | 0.5 | no route | O2 right front (OXR1) | — | |
| W51 | OEM-E6-12 | NEXUSS3-C-27 | 0.5 | no route | O2 left front (OXL1) | — | |
| W52 | OEM-E6-22 | NEXUSS3-C-28 | 0.5 | no route | Intake air temperature (THA) | — | |
| W53 | OEM-E5-11 | NEXUSS3-C-5 | 0.5 | no route | Vehicle speed sensor (SP2-) | — | |
| W54 | OEM-E5-5 | NEXUSS3-C-6 | 0.5 | no route | Vehicle speed sensor (SP2+) | — | |
| W55 | OEM-E7-25 | NEXUSS3-C-7 | 0.5 | no route | Igniter feedback (IGF) | — | |
| W56 | OEM-E4-2 | NEXUSS3-C-8 | 0.5 | no route | Starter signal (STA) | — | |
| W57 | OEM-E4-5 | NEXUSS3-C-19 | 0.5 | no route | Diagnostic/timing check (TC) | — | |
| W58 | OEM-E4-6 | NEXUSS3-C-20 | 0.5 | no route | Stop light switch (STP) | — |
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 (9)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | REQUIRED_UNMAPPED | OEM-E7-7 | Required OEM function "ETCS throttle motor - (M-)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E7-8 | Required OEM function "ETCS throttle motor + (M+)" (hbridge_out) is not connected to the new ECU. |
| warn | LOAD_UNKNOWN | NEXUSS3-A-26 | NEXUSS3-A-26 "ECR output" drives OEM-E3-10 EFI main relay control (MREL) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | NEXUSS3-C-2 ↔ NEXUSS3-C-26 | NEXUSS3-C-2 "Trigger -" [trigger_in] is wired to NEXUSS3-C-26 "Signal ground" [sensor_ground]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | NET_FAMILY | OEM-E2-26 ↔ NEXUSS3-A-7 | OEM-E2-26 "O2 heater left rear (HTL2)" [low_side_out] is wired to NEXUSS3-A-7 "Injector 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-E6-14 ↔ NEXUSS3-C-14 | OEM-E6-14 "Coolant temperature (THW)" [temp_in] is wired to NEXUSS3-C-14 "AVI 5" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-E6-22 ↔ NEXUSS3-C-28 | OEM-E6-22 "Intake air temperature (THA)" [temp_in] is wired to NEXUSS3-C-28 "AVI 11" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-E6-3 ↔ NEXUSS3-A-8 | OEM-E6-3 "O2 heater right front (HTR)" [low_side_out] is wired to NEXUSS3-A-8 "Injector 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 8 optional OEM pins are not mapped: OEM-E3-11 Serial diagnostic (SIL); OEM-E3-5 Fuel pump control (FC); OEM-E3-6 Check-engine lamp (W); OEM-E4-18 EVAP vapor pressure (PTNK); OEM-E5-12 Canister close valve (CCV); OEM-E6-4 O2 heater left front (HTL); OEM-E6-7 EVAP purge VSV (PRG); OEM-E7-5 ACIS intake VSV |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-E3-1 | 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-E7 7: ETCS throttle motor - (M-): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-E7 8: ETCS throttle motor + (M+): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand Not wired: - OEM-E3 1: Battery constant (BATT): Haltech Nexus S3 has no battery-constant input; not needed - OEM-E6 4: O2 heater left front (HTL): no free heater_low_side/low_side/relay_control/ls_hs/injector on Haltech Nexus S3 - OEM-E3 5: Fuel pump control (FC): no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Nexus S3 - OEM-E3 6: Check-engine lamp (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Nexus S3 - OEM-E5 12: Canister close valve (CCV): no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Nexus S3 - OEM-E6 7: EVAP purge VSV (PRG): no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Nexus S3 - OEM-E7 5: ACIS intake VSV: no free low_side/relay_control/heater_low_side/ls_hs/injector on Haltech Nexus S3 - OEM-E4 18: EVAP vapor pressure (PTNK): no free analog_0_5 on Haltech Nexus S3 - OEM-E3 11: Serial diagnostic (SIL): no free k_line on Haltech Nexus S3
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Haltech: Nexus S3 Plug 'n' Play adapter QSG (Subaru WRX/STI ADM, HT-186300) — ECU Connector A & C pinout | https://www.haltech.com/product/ht-186300-nexus-s3-plug-n-play-adapter-harness/ | archive | 2026-10-05 | 3cab7cd337c2 |
| 4 | vendor_doc | Haltech: Nexus S3/S2 ECU Overview (QSG) — specifications | https://store.haltech.com/product/ht-213000-nexus-s3-ecu-only/ | archive | 2026-10-05 | 388299668207 |
| 4 | service_manual | Toyota FSM RM779U (2001 Lexus IS300) — DIAGNOSTICS 'TERMINALS OF ECM' (DI-20/21) | http://www.2jzgarage.com/wp-content/uploads/2013/04/2001_IS300_ECU_Pinouts.pdf | — | — | — |