Lexus SC400 1998-2000 (1UZ-FE VVT-i) → DTAFast T4 (auto)
Lexus SC400 1998-2000 (1UZ-FE VVT-i) — DTAFast — T4
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-11
Before you start
Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 14: read the Findings page before cutting any wire |
| Size of the job | 54 wires · 11 connectors · 2 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-E15-16 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-E15-7 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-E15-8 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | T4-C1-31 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-E15-1 | T4-C3-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-E13-17 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-E14-21 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | T4-C1-13 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | T4-C1-14 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-E13-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-E13-19 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-0V-1 | T4-C2-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-0V-1 | T4-C2-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-E13-2 | T4-C2-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-E14-23 | T4-C2-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-E14-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-E14-10 | T4-C2-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-E13-16 | T4-C2-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-E13-24 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-E14-11 | T4-C1-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-E14-12 | T4-C1-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-E14-13 | T4-C1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-E14-14 | T4-C1-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-E13-5 | T4-C1-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-E13-6 | T4-C1-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-E14-1 | T4-C1-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-E14-2 | T4-C1-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-E14-3 | T4-C1-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-E14-4 | T4-C1-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-E14-5 | T4-C1-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-E14-6 | T4-C1-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-E11-19 | T4-C1-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-E14-20 | T4-C1-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-E13-10 | T4-C2-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-E13-13 | T4-C2-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-E13-21 | T4-C2-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-E13-20 | T4-C2-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-E13-9 | T4-C2-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-E13-14 | T4-C2-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-E15-10 | T4-C1-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-E15-5 | T4-C3-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-E11-7 | T4-C3-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-E11-8 | T4-C3-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-E13-3 | T4-C3-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-E13-4 | T4-C3-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-E11-28 | T4-C3-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-E11-18 | T4-C3-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-E11-27 | T4-C3-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-E13-11 | T4-C2-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-E13-12 | T4-C2-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-E13-22 | T4-C2-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-E14-27 | T4-C2-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-E14-28 | T4-C2-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-E11-17 | T4-C2-15 | 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 | T4-C1-13 | T4-C1-31 | open (OL) | power ground must not touch +12 V supply | |
| 2 | T4-C1-13 | T4-C2-24 | open (OL) | power ground must not touch 5 V sensor reference | |
| 3 | T4-C1-13 | T4-C3-26 | open (OL) | power ground must not touch +12 V supply | |
| 4 | T4-C2-21 | T4-C1-31 | open (OL) | sensor ground must not touch +12 V supply | |
| 5 | T4-C2-21 | T4-C2-24 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 6 | T4-C2-21 | T4-C3-26 | open (OL) | sensor ground must not touch +12 V supply | |
| 7 | T4-C2-24 | T4-C1-31 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 8 | T4-C2-24 | T4-C3-26 | 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-E11
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 17 | Starter signal (STA) | — | W54 | — | 0.5 | T4-C2-15 | — | — | — |
| 18 | O2 sensor signal (bank unconfirmed) | — | W47 | — | 0.5 | T4-C3-17 | — | — | — |
| 19 | VVT oil-control valve RH (OCR+) | — | W32 | — | 0.5 | T4-C1-5 | — | — | — |
| 27 | O2 sensor signal (bank unconfirmed) | — | W48 | — | 0.5 | T4-C3-18 | — | — | — |
| 28 | VVT oil-control valve RH (OCR−) | — | W46 | — | 0.5 | T4-C3-10 | — | — | — |
| 5 | Diagnostic test (TC) | — | — | — | — | — | — | — | — |
| 7 | O2 sensor heater (bank unconfirmed) | — | W42 | — | 0.5 | T4-C3-9 | — | — | — |
| 8 | O2 sensor heater (bank unconfirmed) | — | W43 | — | 0.5 | T4-C3-23 | — | — | — |
OEM-E12
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 12 | Throttle magnetic clutch + (CL+) | — | — | — | — | — | — | — | — |
OEM-E13
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | MAF signal (VG) | — | W34 | — | 0.5 | T4-C2-10 | — | — | — |
| 11 | O2 sensor signal (bank unconfirmed) | — | W49 | — | 0.5 | T4-C2-34 | — | — | — |
| 12 | O2 sensor signal (bank unconfirmed) | — | W50 | — | 0.5 | T4-C2-3 | — | — | — |
| 13 | Throttle position sensor 1 (VTA) | — | W35 | — | 0.5 | T4-C2-1 | — | — | — |
| 14 | Engine coolant temp (THW) | — | W39 | — | 0.5 | T4-C2-7 | — | — | — |
| 15 | VVT position sensor RH (VVR+) | — | — | — | — | — | — | — | — |
| 16 | VVT position sensor LH (VVL+) | — | W18 | — | 0.5 | T4-C2-2 | — | — | — |
| 17 | ECU ground (E1) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 18 | Sensor ground (E2) | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | MAF ground (EVG) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | +5V sensor reference (VC) | — | W14 | — | 0.5 | T4-C2-24 | — | — | — |
| 20 | Throttle position sensor 2 (VTA2) | — | W37 | — | 0.5 | T4-C2-6 | — | — | — |
| 21 | Accelerator pedal position 1 (VPA) | — | W36 | — | 0.5 | T4-C2-5 | — | — | — |
| 22 | Intake air temp (THA) | — | W51 | — | 0.5 | T4-C2-25 | — | — | — |
| 23 | VVT position sensor RH (VVR−) | — | — | — | — | — | — | — | — |
| 24 | VVT position sensor LH (VVL−) | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | O2 sensor heater (bank unconfirmed) | — | W44 | — | 0.5 | T4-C3-24 | — | — | — |
| 4 | O2 sensor heater (bank unconfirmed) | — | W45 | — | 0.5 | T4-C3-25 | — | — | — |
| 5 | Injector 1 (cyl 1) | — | W24 | — | 0.5 | T4-C1-9 | — | — | — |
| 6 | Injector 2 (cyl 2) | — | W25 | — | 0.5 | T4-C1-17 | — | — | — |
| 8 | Throttle magnetic clutch − (CL−) | — | — | — | — | — | — | — | — |
| 9 | Accelerator pedal position 2 (VPA2) | — | W38 | — | 0.5 | T4-C2-19 | — | — | — |
OEM-E14
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 3 (cyl 3) | — | W26 | — | 0.5 | T4-C1-34 | — | — | — |
| 10 | Camshaft position sensor (G2) | — | W17 | — | 0.5 | T4-C2-22 | — | — | — |
| 11 | Ignition coil 1 (IGT1) | — | W20 | — | 0.5 | T4-C1-10 | — | — | — |
| 12 | Ignition coil 2 (IGT2) | — | W21 | — | 0.5 | T4-C1-18 | — | — | — |
| 13 | Ignition coil 3 (IGT3) | — | W22 | — | 0.5 | T4-C1-1 | — | — | — |
| 14 | Ignition coil 4 (IGT4) | — | W23 | — | 0.5 | T4-C1-26 | — | — | — |
| 15 | Ignition coil 5 (IGT5) | — | — | — | — | — | — | — | — |
| 16 | Ignition coil 6 (IGT6) | — | — | — | — | — | — | — | — |
| 17 | Knock sensor RH (KNKR) | — | — | — | — | — | — | — | — |
| 18 | Knock sensor LH (KNKL) | — | — | — | — | — | — | — | — |
| 19 | VVT oil-control valve LH (OCV−) | — | — | — | — | — | — | — | — |
| 2 | Injector 4 (cyl 4) | — | W27 | — | 0.5 | T4-C1-25 | — | — | — |
| 20 | VVT oil-control valve LH (OCV+) | — | W33 | — | 0.5 | T4-C1-4 | — | — | — |
| 21 | Power/injector ground (E01) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 22 | Crank position sensor (NE−) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 23 | Crank position sensor (NE+) | — | W15 | — | 0.5 | T4-C2-12 | — | — | — |
| 25 | Ignition coil 7 (IGT7) | — | — | — | — | — | — | — | — |
| 26 | Ignition coil 8 (IGT8) | — | — | — | — | — | — | — | — |
| 27 | Ignition confirmation 1 (IGF1) | — | W52 | — | 0.5 | T4-C2-4 | — | — | — |
| 28 | Ignition confirmation 2 (IGF2) | — | W53 | — | 0.5 | T4-C2-14 | — | — | — |
| 29 | ACIS induction VSV | — | — | — | — | — | — | — | — |
| 3 | Injector 5 (cyl 5) | — | W28 | — | 0.5 | T4-C1-9 | — | — | — |
| 4 | Injector 6 (cyl 6) | — | W29 | — | 0.5 | T4-C1-17 | — | — | — |
| 5 | Injector 7 (cyl 7) | — | W30 | — | 0.5 | T4-C1-34 | — | — | — |
| 6 | Injector 8 (cyl 8) | — | W31 | — | 0.5 | T4-C1-25 | — | — | — |
| 7 | Throttle motor − (M−) | — | — | — | — | — | — | — | — |
| 8 | Throttle motor + (M+) | — | — | — | — | — | — | — | — |
OEM-E15
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Battery constant (+12V) | — | W5 | — | 0.85 | T4-C3-26 | — | — | — |
| 10 | EFI main relay control (MREL) | — | W40 | — | 0.5 | T4-C1-3 | — | — | — |
| 11 | OBD-II / DLC3 data (SIL) | — | — | — | — | — | — | — | — |
| 16 | ECM power (EFI relay +B) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 5 | Fuel pump relay control (FC) | — | W41 | — | 0.5 | T4-C3-22 | — | — | — |
| 6 | Check engine light (W) | — | — | — | — | — | — | — | — |
| 7 | ECM power feed (+BM) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 8 | ECM power (EFI relay +B1) | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 9 | Ignition switch (+12V) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W10 | — | 0.5 | OEM-E13-18 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-E13-19 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | T4-C2-21 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | T4-C2-33 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-E14-22 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-E13-24 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-E15-16 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-E15-7 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | OEM-E15-8 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | T4-C1-31 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W6 | — | 0.85 | OEM-E13-17 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-E14-21 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | T4-C1-13 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | T4-C1-14 | — | — | — |
T4-C1
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Coil 3 | — | W22 | — | 0.5 | OEM-E14-13 | — | — | — |
| 2 | — | — | — | — | — | — | — | — | — |
| 3 | PWM 3 | — | W40 | — | 0.5 | OEM-E15-10 | — | — | — |
| 4 | PWM 2 | — | W33 | — | 0.5 | OEM-E14-20 | — | — | — |
| 5 | PWM 1 | — | W32 | — | 0.5 | OEM-E11-19 | — | — | — |
| 6 | — | — | — | — | — | — | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | Injector 1 | — | W28 | — | 0.5 | OEM-E14-3 | — | — | — |
| 9 | Injector 1 | — | W24 | — | 0.5 | OEM-E13-5 | — | — | — |
| 10 | Coil 1 | — | W20 | — | 0.5 | OEM-E14-11 | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | Power Ground 1 | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | Power Ground 2 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Injector 2 | — | W25 | — | 0.5 | OEM-E13-6 | — | — | — |
| 17 | Injector 2 | — | W29 | — | 0.5 | OEM-E14-4 | — | — | — |
| 18 | Coil 2 | — | W21 | — | 0.5 | OEM-E14-12 | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | — | — | — | — | — | — | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | — | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
| 25 | Injector 4 | — | W31 | — | 0.5 | OEM-E14-6 | — | — | — |
| 25 | Injector 4 | — | W27 | — | 0.5 | OEM-E14-2 | — | — | — |
| 26 | Coil 4 | — | W23 | — | 0.5 | OEM-E14-14 | — | — | — |
| 27 | — | — | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | — | — |
| 29 | — | — | — | — | — | — | — | — | — |
| 30 | — | — | — | — | — | — | — | — | — |
| 31 | Ignition 12v In | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 32 | — | — | — | — | — | — | — | — | — |
| 33 | — | — | — | — | — | — | — | — | — |
| 34 | Injector 3 | — | W30 | — | 0.5 | OEM-E14-5 | — | — | — |
| 34 | Injector 3 | — | W26 | — | 0.5 | OEM-E14-1 | — | — | — |
T4-C2
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Analogue 2 | — | W35 | — | 0.5 | OEM-E13-13 | — | — | — |
| 2 | Wheel 1 | — | W18 | — | 0.5 | OEM-E13-16 | — | — | — |
| 3 | Analogue 10 | — | W50 | — | 0.5 | OEM-E13-12 | — | — | — |
| 4 | Digital 1 | — | W52 | — | 0.5 | OEM-E14-27 | — | — | — |
| 5 | Analogue 3 | — | W36 | — | 0.5 | OEM-E13-21 | — | — | — |
| 6 | Analogue 4 | — | W37 | — | 0.5 | OEM-E13-20 | — | — | — |
| 7 | Thermistor 1 | — | W39 | — | 0.5 | OEM-E13-14 | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | 5v Output | — | — | — | — | — | — | — | — |
| 10 | Analogue 1 | — | W34 | — | 0.5 | OEM-E13-10 | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | Crank | — | W15 | — | 0.5 | OEM-E14-23 | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | Digital 4 | — | W53 | — | 0.5 | OEM-E14-28 | — | — | — |
| 15 | Digital 5 | — | W54 | — | 0.5 | OEM-E11-17 | — | — | — |
| 16 | Analogue 11 | — | — | — | — | — | — | — | — |
| 17 | Thermistor 3 | — | — | — | — | — | — | — | — |
| 18 | — | — | — | — | — | — | — | — | — |
| 19 | Analogue 6 | — | W38 | — | 0.5 | OEM-E13-9 | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | Sensor Ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Cam 1 | — | W17 | — | 0.5 | OEM-E14-10 | — | — | — |
| 23 | — | — | — | — | — | — | — | — | — |
| 24 | 5v Output | — | W14 | — | 0.5 | OEM-E13-2 | — | — | — |
| 25 | Thermistor 2 | — | W51 | — | 0.5 | OEM-E13-22 | — | — | — |
| 26 | CAN High | — | — | — | — | — | — | — | — |
| 27 | — | — | — | — | — | — | — | — | — |
| 28 | CAN Low | — | — | — | — | — | — | — | — |
| 29 | — | — | — | — | — | — | — | — | — |
| 30 | — | — | — | — | — | — | — | — | — |
| 31 | — | — | — | — | — | — | — | — | — |
| 32 | — | — | — | — | — | — | — | — | — |
| 33 | Sensor Ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 34 | Analogue 9 | — | W49 | — | 0.5 | OEM-E13-11 | — | — | — |
T4-C3
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | — | — | — | — | — | — | — |
| 2 | — | — | — | — | — | — | — | — | — |
| 3 | — | — | — | — | — | — | — | — | — |
| 4 | — | — | — | — | — | — | — | — | — |
| 5 | — | — | — | — | — | — | — | — | — |
| 6 | — | — | — | — | — | — | — | — | — |
| 7 | Lambda 1 Pump Current | — | — | — | — | — | — | — | — |
| 8 | Lambda 1 VGND | — | — | — | — | — | — | — | — |
| 9 | Lambda 1 Heater Negative | — | W42 | — | 0.5 | OEM-E11-7 | — | — | — |
| 10 | PWM 8 | — | W46 | — | 0.5 | OEM-E11-28 | — | — | — |
| 11 | Lambda 1 Trim Resistor | — | — | — | — | — | — | — | — |
| 12 | Lambda 1 Nernst Voltage | — | — | — | — | — | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Analogue 7 | — | W47 | — | 0.5 | OEM-E11-18 | — | — | — |
| 18 | Analogue 8 | — | W48 | — | 0.5 | OEM-E11-27 | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | — | — | — | — | — | — | — | — | — |
| 22 | PWM 4 | — | W41 | — | 0.5 | OEM-E15-5 | — | — | — |
| 23 | PWM 5 | — | W43 | — | 0.5 | OEM-E11-8 | — | — | — |
| 24 | PWM 6 | — | W44 | — | 0.5 | OEM-E13-3 | — | — | — |
| 25 | PWM 7 | — | W45 | — | 0.5 | OEM-E13-4 | — | — | — |
| 26 | Permanent 12v | — | W5 | — | 0.85 | OEM-E15-1 | — | — | — |
| 27 | Permanent 12v | — | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | — | — |
| 29 | — | — | — | — | — | — | — | — | — |
| 30 | — | — | — | — | — | — | — | — | — |
| 31 | — | — | — | — | — | — | — | — | — |
| 32 | — | — | — | — | — | — | — | — | — |
| 33 | — | — | — | — | — | — | — | — | — |
| 34 | — | — | — | — | — | — | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-E11-17 | Starter signal (STA) | digital_in | T4-C2-15 | Digital 5 | digital_in | corroborated | |
| OEM-E11-18 | O2 sensor signal (bank unconfirmed) | lambda_nb_in | T4-C3-17 | Analogue 7 | analog_in | corroborated | |
| OEM-E11-19 | VVT oil-control valve RH (OCR+) | low_side_out | T4-C1-5 | PWM 1 | low_side_out | corroborated | |
| OEM-E11-27 | O2 sensor signal (bank unconfirmed) | lambda_nb_in | T4-C3-18 | Analogue 8 | analog_in | corroborated | |
| OEM-E11-28 | VVT oil-control valve RH (OCR−) | low_side_out | T4-C3-10 | PWM 8 | low_side_out | corroborated | |
| OEM-E11-5 | Diagnostic test (TC) | serial | — | — | — | corroborated | |
| OEM-E11-7 | O2 sensor heater (bank unconfirmed) | low_side_out | T4-C3-9 | Lambda 1 Heater Negative | low_side_out | corroborated | |
| OEM-E11-8 | O2 sensor heater (bank unconfirmed) | low_side_out | T4-C3-23 | PWM 5 | low_side_out | corroborated | |
| OEM-E12-12 | Throttle magnetic clutch + (CL+) | low_side_out | — | — | — | corroborated | |
| OEM-E13-10 | MAF signal (VG) | analog_in | T4-C2-10 | Analogue 1 | analog_in | corroborated | |
| OEM-E13-11 | O2 sensor signal (bank unconfirmed) | lambda_nb_in | T4-C2-34 | Analogue 9 | analog_in | corroborated | |
| OEM-E13-12 | O2 sensor signal (bank unconfirmed) | lambda_nb_in | T4-C2-3 | Analogue 10 | analog_in | corroborated | |
| OEM-E13-13 | Throttle position sensor 1 (VTA) | analog_in | T4-C2-1 | Analogue 2 | analog_in | corroborated | |
| OEM-E13-14 | Engine coolant temp (THW) | temp_in | T4-C2-7 | Thermistor 1 | temp_in | corroborated | |
| OEM-E13-15 | VVT position sensor RH (VVR+) | trigger_in | — | — | — | corroborated | |
| OEM-E13-16 | VVT position sensor LH (VVL+) | trigger_in | T4-C2-2 | Wheel 1 | digital_in | corroborated | |
| OEM-E13-17 | ECU ground (E1) | ground | T4-C1-13 + T4-C1-14 | Power Ground 1 + Power Ground 2 | ground | corroborated | |
| OEM-E13-18 | Sensor ground (E2) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-E13-19 | MAF ground (EVG) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-E13-2 | +5V sensor reference (VC) | vref | T4-C2-24 | 5v Output | vref | corroborated | |
| OEM-E13-20 | Throttle position sensor 2 (VTA2) | analog_in | T4-C2-6 | Analogue 4 | analog_in | corroborated | |
| OEM-E13-21 | Accelerator pedal position 1 (VPA) | analog_in | T4-C2-5 | Analogue 3 | analog_in | corroborated | |
| OEM-E13-22 | Intake air temp (THA) | temp_in | T4-C2-25 | Thermistor 2 | temp_in | corroborated | |
| OEM-E13-23 | VVT position sensor RH (VVR−) | trigger_in | — | — | — | corroborated | |
| OEM-E13-24 | VVT position sensor LH (VVL−) | trigger_in | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-E13-3 | O2 sensor heater (bank unconfirmed) | low_side_out | T4-C3-24 | PWM 6 | low_side_out | corroborated | |
| OEM-E13-4 | O2 sensor heater (bank unconfirmed) | low_side_out | T4-C3-25 | PWM 7 | low_side_out | corroborated | |
| OEM-E13-5 | Injector 1 (cyl 1) | injector_out | T4-C1-9 | Injector 1 | injector_out | corroborated | |
| OEM-E13-6 | Injector 2 (cyl 2) | injector_out | T4-C1-17 | Injector 2 | injector_out | corroborated | |
| OEM-E13-8 | Throttle magnetic clutch − (CL−) | low_side_out | — | — | — | corroborated | |
| OEM-E13-9 | Accelerator pedal position 2 (VPA2) | analog_in | T4-C2-19 | Analogue 6 | analog_in | corroborated | |
| OEM-E14-1 | Injector 3 (cyl 3) | injector_out | T4-C1-34 | Injector 3 | injector_out | corroborated | |
| OEM-E14-10 | Camshaft position sensor (G2) | trigger_in | T4-C2-22 | Cam 1 | trigger_in | corroborated | |
| OEM-E14-11 | Ignition coil 1 (IGT1) | ignition_out | T4-C1-10 | Coil 1 | ignition_out | corroborated | |
| OEM-E14-12 | Ignition coil 2 (IGT2) | ignition_out | T4-C1-18 | Coil 2 | ignition_out | corroborated | |
| OEM-E14-13 | Ignition coil 3 (IGT3) | ignition_out | T4-C1-1 | Coil 3 | ignition_out | corroborated | |
| OEM-E14-14 | Ignition coil 4 (IGT4) | ignition_out | T4-C1-26 | Coil 4 | ignition_out | corroborated | |
| OEM-E14-15 | Ignition coil 5 (IGT5) | ignition_out | — | — | — | corroborated | |
| OEM-E14-16 | Ignition coil 6 (IGT6) | ignition_out | — | — | — | corroborated | |
| OEM-E14-17 | Knock sensor RH (KNKR) | knock_in | — | — | — | corroborated | |
| OEM-E14-18 | Knock sensor LH (KNKL) | knock_in | — | — | — | corroborated | |
| OEM-E14-19 | VVT oil-control valve LH (OCV−) | low_side_out | — | — | — | corroborated | |
| OEM-E14-2 | Injector 4 (cyl 4) | injector_out | T4-C1-25 | Injector 4 | injector_out | corroborated | |
| OEM-E14-20 | VVT oil-control valve LH (OCV+) | low_side_out | T4-C1-4 | PWM 2 | low_side_out | corroborated | |
| OEM-E14-21 | Power/injector ground (E01) | ground | T4-C1-13 + T4-C1-14 | Power Ground 1 + Power Ground 2 | ground | corroborated | |
| OEM-E14-22 | Crank position sensor (NE−) | trigger_in | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-E14-23 | Crank position sensor (NE+) | trigger_in | T4-C2-12 | Crank | trigger_in | corroborated | |
| OEM-E14-25 | Ignition coil 7 (IGT7) | ignition_out | — | — | — | corroborated | |
| OEM-E14-26 | Ignition coil 8 (IGT8) | ignition_out | — | — | — | corroborated | |
| OEM-E14-27 | Ignition confirmation 1 (IGF1) | digital_in | T4-C2-4 | Digital 1 | digital_in | corroborated | |
| OEM-E14-28 | Ignition confirmation 2 (IGF2) | digital_in | T4-C2-14 | Digital 4 | digital_in | corroborated | |
| OEM-E14-29 | ACIS induction VSV | low_side_out | — | — | — | corroborated | |
| OEM-E14-3 | Injector 5 (cyl 5) | injector_out | T4-C1-9 | Injector 1 | injector_out | corroborated | |
| OEM-E14-4 | Injector 6 (cyl 6) | injector_out | T4-C1-17 | Injector 2 | injector_out | corroborated | |
| OEM-E14-5 | Injector 7 (cyl 7) | injector_out | T4-C1-34 | Injector 3 | injector_out | corroborated | |
| OEM-E14-6 | Injector 8 (cyl 8) | injector_out | T4-C1-25 | Injector 4 | injector_out | corroborated | |
| OEM-E14-7 | Throttle motor − (M−) | hbridge_out | — | — | — | corroborated | |
| OEM-E14-8 | Throttle motor + (M+) | hbridge_out | — | — | — | corroborated | |
| OEM-E15-1 | Battery constant (+12V) | power_in | T4-C3-26 | Permanent 12v | power_in | corroborated | |
| OEM-E15-10 | EFI main relay control (MREL) | low_side_out | T4-C1-3 | PWM 3 | low_side_out | corroborated | |
| OEM-E15-11 | OBD-II / DLC3 data (SIL) | serial | — | — | — | corroborated | |
| OEM-E15-16 | ECM power (EFI relay +B) | power_in | T4-C1-31 | Ignition 12v In | power_in | corroborated | |
| OEM-E15-5 | Fuel pump relay control (FC) | low_side_out | T4-C3-22 | PWM 4 | low_side_out | corroborated | |
| OEM-E15-6 | Check engine light (W) | low_side_out | — | — | — | corroborated | |
| OEM-E15-7 | ECM power feed (+BM) | power_in | T4-C1-31 | Ignition 12v In | power_in | corroborated | |
| OEM-E15-8 | ECM power (EFI relay +B1) | power_in | T4-C1-31 | Ignition 12v In | power_in | corroborated | |
| OEM-E15-9 | Ignition switch (+12V) | digital_in | — | — | — | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-E15-16 | SP-14V-1 | 0.85 | no route | ECM power (EFI relay +B) | — | |
| W2 | OEM-E15-7 | SP-14V-1 | 0.85 | no route | ECM power feed (+BM) | — | |
| W3 | OEM-E15-8 | SP-14V-1 | 0.85 | no route | ECM power (EFI relay +B1) | — | |
| W4 | SP-14V-1 | T4-C1-31 | 0.85 | no route | Ignition 12v In | — | |
| W5 | OEM-E15-1 | T4-C3-26 | 0.85 | no route | Battery constant (+12V) | — | |
| W6 | OEM-E13-17 | SP-GND-1 | 0.85 | no route | ECU ground (E1) | — | |
| W7 | OEM-E14-21 | SP-GND-1 | 0.85 | no route | Power/injector ground (E01) | — | |
| W8 | SP-GND-1 | T4-C1-13 | 0.85 | no route | Power Ground 1 | — | |
| W9 | SP-GND-1 | T4-C1-14 | 0.85 | no route | Power Ground 2 | — | |
| W10 | OEM-E13-18 | SP-0V-1 | 0.5 | no route | Sensor ground (E2) | — | |
| W11 | OEM-E13-19 | SP-0V-1 | 0.5 | no route | MAF ground (EVG) | — | |
| W12 | SP-0V-1 | T4-C2-21 | 0.5 | no route | Sensor Ground | — | |
| W13 | SP-0V-1 | T4-C2-33 | 0.5 | no route | Sensor Ground | — | |
| W14 | OEM-E13-2 | T4-C2-24 | 0.5 | no route | +5V sensor reference (VC) | — | |
| W15 | OEM-E14-23 | T4-C2-12 | 0.5 | no route | Crank position sensor (NE+) | — | |
| W16 | OEM-E14-22 | SP-0V-1 | 0.5 | no route | Crank position sensor (NE−) | — | |
| W17 | OEM-E14-10 | T4-C2-22 | 0.5 | no route | Camshaft position sensor (G2) | — | |
| W18 | OEM-E13-16 | T4-C2-2 | 0.5 | no route | VVT position sensor LH (VVL+) | — | |
| W19 | OEM-E13-24 | SP-0V-1 | 0.5 | no route | VVT position sensor LH (VVL−) | — | |
| W20 | OEM-E14-11 | T4-C1-10 | 0.5 | no route | Ignition coil 1 (IGT1) | — | |
| W21 | OEM-E14-12 | T4-C1-18 | 0.5 | no route | Ignition coil 2 (IGT2) | — | |
| W22 | OEM-E14-13 | T4-C1-1 | 0.5 | no route | Ignition coil 3 (IGT3) | — | |
| W23 | OEM-E14-14 | T4-C1-26 | 0.5 | no route | Ignition coil 4 (IGT4) | — | |
| W24 | OEM-E13-5 | T4-C1-9 | 0.5 | no route | Injector 1 (cyl 1) | — | |
| W25 | OEM-E13-6 | T4-C1-17 | 0.5 | no route | Injector 2 (cyl 2) | — | |
| W26 | OEM-E14-1 | T4-C1-34 | 0.5 | no route | Injector 3 (cyl 3) | — | |
| W27 | OEM-E14-2 | T4-C1-25 | 0.5 | no route | Injector 4 (cyl 4) | — | |
| W28 | OEM-E14-3 | T4-C1-9 | 0.5 | no route | Injector 5 (cyl 5) | — | |
| W29 | OEM-E14-4 | T4-C1-17 | 0.5 | no route | Injector 6 (cyl 6) | — | |
| W30 | OEM-E14-5 | T4-C1-34 | 0.5 | no route | Injector 7 (cyl 7) | — | |
| W31 | OEM-E14-6 | T4-C1-25 | 0.5 | no route | Injector 8 (cyl 8) | — | |
| W32 | OEM-E11-19 | T4-C1-5 | 0.5 | no route | VVT oil-control valve RH (OCR+) | — | |
| W33 | OEM-E14-20 | T4-C1-4 | 0.5 | no route | VVT oil-control valve LH (OCV+) | — | |
| W34 | OEM-E13-10 | T4-C2-10 | 0.5 | no route | MAF signal (VG) | — | |
| W35 | OEM-E13-13 | T4-C2-1 | 0.5 | no route | Throttle position sensor 1 (VTA) | — | |
| W36 | OEM-E13-21 | T4-C2-5 | 0.5 | no route | Accelerator pedal position 1 (VPA) | — | |
| W37 | OEM-E13-20 | T4-C2-6 | 0.5 | no route | Throttle position sensor 2 (VTA2) | — | |
| W38 | OEM-E13-9 | T4-C2-19 | 0.5 | no route | Accelerator pedal position 2 (VPA2) | — | |
| W39 | OEM-E13-14 | T4-C2-7 | 0.5 | no route | Engine coolant temp (THW) | — | |
| W40 | OEM-E15-10 | T4-C1-3 | 0.5 | no route | EFI main relay control (MREL) | — | |
| W41 | OEM-E15-5 | T4-C3-22 | 0.5 | no route | Fuel pump relay control (FC) | — | |
| W42 | OEM-E11-7 | T4-C3-9 | 0.5 | no route | O2 sensor heater (bank unconfirmed) | — | |
| W43 | OEM-E11-8 | T4-C3-23 | 0.5 | no route | O2 sensor heater (bank unconfirmed) | — | |
| W44 | OEM-E13-3 | T4-C3-24 | 0.5 | no route | O2 sensor heater (bank unconfirmed) | — | |
| W45 | OEM-E13-4 | T4-C3-25 | 0.5 | no route | O2 sensor heater (bank unconfirmed) | — | |
| W46 | OEM-E11-28 | T4-C3-10 | 0.5 | no route | VVT oil-control valve RH (OCR−) | — | |
| W47 | OEM-E11-18 | T4-C3-17 | 0.5 | no route | O2 sensor signal (bank unconfirmed) | — | |
| W48 | OEM-E11-27 | T4-C3-18 | 0.5 | no route | O2 sensor signal (bank unconfirmed) | — | |
| W49 | OEM-E13-11 | T4-C2-34 | 0.5 | no route | O2 sensor signal (bank unconfirmed) | — | |
| W50 | OEM-E13-12 | T4-C2-3 | 0.5 | no route | O2 sensor signal (bank unconfirmed) | — | |
| W51 | OEM-E13-22 | T4-C2-25 | 0.5 | no route | Intake air temp (THA) | — | |
| W52 | OEM-E14-27 | T4-C2-4 | 0.5 | no route | Ignition confirmation 1 (IGF1) | — | |
| W53 | OEM-E14-28 | T4-C2-14 | 0.5 | no route | Ignition confirmation 2 (IGF2) | — | |
| W54 | OEM-E11-17 | T4-C2-15 | 0.5 | no route | Starter signal (STA) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 3.000 | ea |
| terminal | 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 41.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (20)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | NET_MERGED | OEM-E13-5 + OEM-E14-3 + T4-C1-9 | 2 different OEM functions share one net: OEM-E13-5 Injector 1 (cyl 1); OEM-E14-3 Injector 5 (cyl 5) |
| error | NET_MERGED | OEM-E13-6 + OEM-E14-4 + T4-C1-17 | 2 different OEM functions share one net: OEM-E13-6 Injector 2 (cyl 2); OEM-E14-4 Injector 6 (cyl 6) |
| error | NET_MERGED | OEM-E14-1 + OEM-E14-5 + T4-C1-34 | 2 different OEM functions share one net: OEM-E14-1 Injector 3 (cyl 3); OEM-E14-5 Injector 7 (cyl 7) |
| error | NET_MERGED | OEM-E14-2 + OEM-E14-6 + T4-C1-25 | 2 different OEM functions share one net: OEM-E14-2 Injector 4 (cyl 4); OEM-E14-6 Injector 8 (cyl 8) |
| error | PHYS_REQUIRED_OPEN | T4-C3-27 | T4-C3-27 "Permanent 12v" is required but not wired. |
| error | REQUIRED_UNMAPPED | OEM-E14-15 | Required OEM function "Ignition coil 5 (IGT5)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E14-16 | Required OEM function "Ignition coil 6 (IGT6)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E14-17 | Required OEM function "Knock sensor RH (KNKR)" (knock_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E14-18 | Required OEM function "Knock sensor LH (KNKL)" (knock_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E14-25 | Required OEM function "Ignition coil 7 (IGT7)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E14-26 | Required OEM function "Ignition coil 8 (IGT8)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E14-7 | Required OEM function "Throttle motor − (M−)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E14-8 | Required OEM function "Throttle motor + (M+)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E15-9 | Required OEM function "Ignition switch (+12V)" (digital_in) is not connected to the new ECU. |
| warn | DATASET_GAP | T4 C1 | 20 of 34 cavities on T4 C1 have no pin data (2,6,7,8,11,12,15,16,19,20,21,22,23,24,27,28,29,30,32,33). Anything there is invisible to these checks. |
| warn | DATASET_GAP | T4 C2 | 11 of 34 cavities on T4 C2 have no pin data (8,11,13,18,20,23,27,29,30,31,32). Anything there is invisible to these checks. |
| warn | DATASET_GAP | T4 C3 | 20 of 34 cavities on T4 C3 have no pin data (1,2,3,4,5,6,13,14,15,16,19,20,21,28,29,30,31,32,33,34). Anything there is invisible to these checks. |
| warn | NET_FAMILY | OEM-E13-16 ↔ T4-C2-2 | OEM-E13-16 "VVT position sensor LH (VVL+)" [trigger_in] is wired to T4-C2-2 "Wheel 1" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot. |
| info | NET_FAMILY | OEM-E13-18 ↔ OEM-E13-24 | OEM-E13-18 "Sensor ground (E2)" [sensor_ground] is wired to OEM-E13-24 "VVT position sensor LH (VVL−)" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 9 optional OEM pins are not mapped: OEM-E11-5 Diagnostic test (TC); OEM-E12-12 Throttle magnetic clutch + (CL+); OEM-E13-15 VVT position sensor RH (VVR+); OEM-E13-23 VVT position sensor RH (VVR−); OEM-E13-8 Throttle magnetic clutch − (CL−); OEM-E14-19 VVT oil-control valve LH (OCV−); OEM-E14-29 ACIS induction VSV; OEM-E15-11 OBD-II / DLC3 data (SIL); OEM-E15-6 Check engine light (W) |
Accepted (0)
| Code | Subject | Reason | By |
|---|
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 8 cylinders: wasted spark (pair coils per firing order) - Only 4 injector outputs for 8 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-E14 18: Knock sensor LH (KNKL): no free knock input on DTAFast T4 - OEM-E14 17: Knock sensor RH (KNKR): no free knock input on DTAFast T4 - OEM-E14 15: Ignition coil 5 (IGT5): no free ignition output on DTAFast T4 - OEM-E14 16: Ignition coil 6 (IGT6): no free ignition output on DTAFast T4 - OEM-E14 25: Ignition coil 7 (IGT7): no free ignition output on DTAFast T4 - OEM-E14 26: Ignition coil 8 (IGT8): no free ignition output on DTAFast T4 - OEM-E14 7: Throttle motor − (M−): needs a paired H-bridge on DTAFast T4 (H-bridge pairing not in the library: set device_pin.bridge_pair from the ECU manual) - OEM-E14 8: Throttle motor + (M+): needs a paired H-bridge on DTAFast T4 (H-bridge pairing not in the library: set device_pin.bridge_pair from the ECU manual) - OEM-E15 9: Ignition switch (+12V): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); DTAFast T4 has no dedicated key-on input - T4-C3 27: Permanent 12v: required by DTAFast T4 but no stock pin feeds it; wire by hand Not wired: - OEM-E13 15: VVT position sensor RH (VVR+): no free cam_hall/cam_vr/frequency_in input on DTAFast T4 - OEM-E13 23: VVT position sensor RH (VVR−): no free cam_hall/cam_vr/frequency_in input on DTAFast T4 - OEM-E12 12: Throttle magnetic clutch + (CL+): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-E13 8: Throttle magnetic clutch − (CL−): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-E14 19: VVT oil-control valve LH (OCV−): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-E14 29: ACIS induction VSV: no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-E15 6: Check engine light (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-E15 11: OBD-II / DLC3 data (SIL): no free k_line on DTAFast T4 - OEM-E11 5: Diagnostic test (TC): no free k_line on DTAFast T4
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | DTAFast T4 ECU wiring diagram | https://cdn.shopify.com/s/files/1/0848/7508/4108/files/T4_Wiring_Diagram.pdf?v=1789413067 | — | — | — |
| 4 | vendor_doc | Toyota 1UZ-FE (VVT-i) engine manual M1UZ | http://www.epicmarine.com/docs/M1UZrm.pdf | — | — | — |
| 3 | community_copy | 1998 Lexus LS400 ECM terminal voltage chart (RM717U translation) | https://www.renrendoc.com/p-59096353.html | — | — | — |