Honda NSX NA2 1997-2005 (C32B) → DTAFast T4 (auto)
Honda NSX NA2 1997-2005 (C32B) — 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 | 12: read the Findings page before cutting any wire |
| Size of the job | 66 wires · 13 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-A-13 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-C-1 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-G-10 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-G-2 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-G-3 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-G-9 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-14V-1 | T4-C1-31 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-D-1 | T4-C3-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-A-12 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-A-25 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-G-7 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-G-8 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | T4-C1-13 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-GND-1 | T4-C1-14 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-A-26 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-B-13 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-B-14 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-B-15 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-B-16 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-B-9 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-D-11 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-F-15 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-F-2 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | SP-0V-1 | T4-C2-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | SP-0V-1 | T4-C2-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-D-10 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-F-1 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | SP-5V1-1 | T4-C2-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-F-14 | T4-C2-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-B-8 | T4-C2-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-B-7 | T4-C2-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-B-6 | T4-C2-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-11 | T4-C1-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-24 | T4-C1-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B-12 | T4-C1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-B-11 | T4-C1-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-A-1 | T4-C1-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-A-2 | T4-C1-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-3 | T4-C1-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-14 | T4-C1-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-15 | T4-C1-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-16 | T4-C1-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-5 | T4-C1-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-F-19 | T4-C1-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-F-20 | T4-C1-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-D-9 | T4-C2-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-F-13 | T4-C2-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-F-12 | T4-C2-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-D-12 | T4-C2-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-D-7 | T4-C2-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-F-4 | T4-C3-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-A-8 | T4-C3-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-A-10 | T4-C3-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-A-22 | T4-C3-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-A-23 | T4-C3-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-A-9 | T4-C3-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-D-16 | T4-C2-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-D-17 | T4-C3-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-D-18 | T4-C3-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-D-19 | T4-C2-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-D-8 | T4-C2-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-D-20 | T4-C2-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-C-7 | T4-C2-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-F-16 | T4-C2-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-F-6 | T4-C2-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-B-1 | T4-C2-16 | 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-C1-31 | T4-C2-21 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | T4-C1-13 | T4-C1-31 | open (OL) | power ground must not touch +12 V supply | |
| 3 | T4-C1-13 | T4-C2-24 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | T4-C1-13 | T4-C2-9 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | T4-C1-13 | T4-C3-26 | open (OL) | power ground must not touch +12 V supply | |
| 6 | T4-C1-31 | T4-C2-24 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 7 | T4-C1-31 | T4-C2-9 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 8 | T4-C2-21 | T4-C2-24 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 9 | T4-C2-21 | T4-C2-9 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 10 | T4-C2-21 | T4-C3-26 | open (OL) | sensor ground must not touch +12 V supply | |
| 11 | T4-C3-26 | T4-C2-24 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 12 | T4-C3-26 | T4-C2-9 | open (OL) | +12 V supply 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
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 (INJ1) | — | W37 | — | 0.5 | T4-C1-9 | — | — | — |
| 10 | Rear secondary O2 heater (RSO2SHTC) | — | W53 | — | 0.5 | T4-C3-9 | — | — | — |
| 11 | Ignition coil 1 (IGN COIL1) | — | W33 | — | 0.5 | T4-C1-10 | — | — | — |
| 12 | Power ground (PG1) | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 13 | ECM power source (IGP1) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 14 | Injector 4 (INJ4) | — | W40 | — | 0.5 | T4-C1-25 | — | — | — |
| 15 | Injector 5 (INJ5) | — | W41 | — | 0.5 | T4-C1-9 | — | — | — |
| 16 | Injector 6 (INJ6) | — | W42 | — | 0.5 | T4-C1-17 | — | — | — |
| 17 | EVAP bypass solenoid (2WBS) | — | — | — | — | — | — | — | — |
| 2 | Injector 2 (INJ2) | — | W38 | — | 0.5 | T4-C1-17 | — | — | — |
| 20 | IAB control solenoid (IABCS) | — | — | — | — | — | — | — | — |
| 21 | EVAP purge control solenoid (PCS) | — | — | — | — | — | — | — | — |
| 22 | Front primary O2 heater (FPO2SHTC) | — | W54 | — | 0.5 | T4-C3-24 | — | — | — |
| 23 | Rear primary O2 heater (RPO2SHTC) | — | W55 | — | 0.5 | T4-C3-25 | — | — | — |
| 24 | Ignition coil 2 (IGN COIL2) | — | W34 | — | 0.5 | T4-C1-18 | — | — | — |
| 25 | Power ground (PG2) | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 26 | Logic ground (LG1) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Injector 3 (INJ3) | — | W39 | — | 0.5 | T4-C1-34 | — | — | — |
| 4 | EVAP canister vent shut valve (VSV) | — | — | — | — | — | — | — | — |
| 5 | Fuel pump relay (FLR1) | — | W43 | — | 0.5 | T4-C1-5 | — | — | — |
| 6 | EGR control solenoid (ESOL) | — | — | — | — | — | — | — | — |
| 7 | Malfunction indicator lamp (MIL) | — | — | — | — | — | — | — | — |
| 8 | A/C clutch relay (ACC) | — | W52 | — | 0.5 | T4-C3-23 | — | — | — |
| 9 | Front secondary O2 heater (FSO2SHTC) | — | W56 | — | 0.5 | T4-C3-10 | — | — | — |
OEM-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | VTEC pressure switch front (VTP SWF) | — | W66 | — | 0.5 | T4-C2-16 | — | — | — |
| 10 | Ignition coil 5 (IGN COIL5) | — | — | — | — | — | — | — | — |
| 11 | Ignition coil 4 (IGN COIL4) | — | W36 | — | 0.5 | T4-C1-26 | — | — | — |
| 12 | Ignition coil 3 (IGN COIL3) | — | W35 | — | 0.5 | T4-C1-1 | — | — | — |
| 13 | Cylinder position sensor 2 return (CYP 2M) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 14 | Cylinder position sensor 1 return (CYP 1M) | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | Crank position sensor 2 return (CKP 2M) | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Crank position sensor 1 return (CKP 1M) | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Ignition coil 6 (IGN COIL6) | — | — | — | — | — | — | — | — |
| 3 | VTEC pressure switch rear (VTP SWR) | — | — | — | — | — | — | — | — |
| 4 | Neutral switch (NT SW, M/T) | — | — | — | — | — | — | — | — |
| 5 | Cylinder position sensor 2 + (CYP 2P) | — | — | — | — | — | — | — | — |
| 6 | Cylinder position sensor 1 + (CYP 1P) | — | W32 | — | 0.5 | T4-C2-22 | — | — | — |
| 7 | Crank position sensor 2 + (CKP 2P) | — | W31 | — | 0.5 | T4-C2-2 | — | — | — |
| 8 | Crank position sensor 1 + (CKP 1P) | — | W30 | — | 0.5 | T4-C2-12 | — | — | — |
| 9 | Logic ground (LG2) | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
OEM-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECM power source (IGP2) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Clutch switch (MTCLS, M/T) | — | — | — | — | — | — | — | — |
| 6 | Starter switch (STS) | — | — | — | — | — | — | — | — |
| 7 | Vehicle speed sensor (VSS) | — | W63 | — | 0.5 | T4-C2-4 | — | — | — |
| 8 | Engine speed pulse (NEP) | — | — | — | — | — | — | — | — |
OEM-D
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Backup power (VBU) | — | W8 | — | 0.85 | T4-C3-26 | — | — | — |
| 10 | Sensor 5V supply (VCC2) | — | W26 | — | 0.5 | SP-5V1-1 | — | — | — |
| 11 | Sensor ground (SG2) | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 12 | Throttle position sensor (TPS) | — | W49 | — | 0.5 | T4-C2-6 | — | — | — |
| 13 | Knock sensor front (KSF) | — | — | — | — | — | — | — | — |
| 16 | Front secondary O2 signal (O2S FS) | — | W57 | — | 0.5 | T4-C2-19 | — | — | — |
| 17 | Rear secondary O2 signal (O2S RS) | — | W58 | — | 0.5 | T4-C3-17 | — | — | — |
| 18 | Front primary O2 signal (O2S FP) | — | W59 | — | 0.5 | T4-C3-18 | — | — | — |
| 19 | Rear primary O2 signal (O2S RP) | — | W60 | — | 0.5 | T4-C2-34 | — | — | — |
| 2 | Knock sensor rear (KSR) | — | — | — | — | — | — | — | — |
| 20 | EGR valve lift sensor (EGRL) | — | W62 | — | 0.5 | T4-C2-3 | — | — | — |
| 4 | K-line diagnostics | — | — | — | — | — | — | — | — |
| 7 | Engine coolant temperature (ECT) | — | W50 | — | 0.5 | T4-C2-7 | — | — | — |
| 8 | Intake air temperature (IAT) | — | W61 | — | 0.5 | T4-C2-25 | — | — | — |
| 9 | MAP sensor | — | W46 | — | 0.5 | T4-C2-10 | — | — | — |
OEM-F
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Sensor 5V supply (VCC1) | — | W27 | — | 0.5 | SP-5V1-1 | — | — | — |
| 12 | Accelerator pedal position 2 (AP2) | — | W48 | — | 0.5 | T4-C2-5 | — | — | — |
| 13 | Accelerator pedal position 1 (AP1) | — | W47 | — | 0.5 | T4-C2-1 | — | — | — |
| 14 | Accelerator pedal 5V supply (VCC3) | — | W29 | — | 0.5 | T4-C2-24 | — | — | — |
| 15 | Accelerator pedal ground (SG3) | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Brake switch 1 (BKSW1) | — | W64 | — | 0.5 | T4-C2-14 | — | — | — |
| 19 | VTEC solenoid front (VT SOLF) | — | W44 | — | 0.5 | T4-C1-4 | — | — | — |
| 2 | Sensor ground (SG1) | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 20 | VTEC solenoid rear (VT SOLR) | — | W45 | — | 0.5 | T4-C1-3 | — | — | — |
| 4 | Fuel pump relay 2 (FLR2) | — | W51 | — | 0.5 | T4-C3-22 | — | — | — |
| 6 | Brake switch 2 (BKSW2) | — | W65 | — | 0.5 | T4-C2-15 | — | — | — |
OEM-G
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Throttle motor common power phases 2&4 (COM2) | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 11 | Throttle motor phase 3 (PM3) | — | — | — | — | — | — | — | — |
| 12 | Throttle motor phase 4 (PM4) | — | — | — | — | — | — | — | — |
| 2 | Throttle motor power source 1 (IGM1) | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Throttle motor power source 2 (IGM2) | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Throttle motor phase 1 (PM1) | — | — | — | — | — | — | — | — |
| 5 | Throttle motor phase 2 (PM2) | — | — | — | — | — | — | — | — |
| 7 | Throttle motor ground 1 (PGM1) | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Throttle motor ground 2 (PGM2) | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 9 | Throttle motor common power phases 1&3 (COM1) | — | W6 | — | 0.85 | SP-14V-1 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W15 | — | 0.5 | OEM-A-26 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-B-13 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-B-14 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-B-15 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-B-16 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | OEM-B-9 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | OEM-D-11 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | OEM-F-15 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | OEM-F-2 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | T4-C2-21 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | T4-C2-33 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-13 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-C-1 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | OEM-G-10 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | OEM-G-2 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-G-3 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-G-9 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | T4-C1-31 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W26 | — | 0.5 | OEM-D-10 | — | — | — |
| 1 | — | — | W27 | — | 0.5 | OEM-F-1 | — | — | — |
| 1 | — | — | W28 | — | 0.5 | T4-C2-9 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.85 | T4-C1-13 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-A-12 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | OEM-A-25 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | OEM-G-7 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | OEM-G-8 | — | — | — |
| 1 | — | — | W14 | — | 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 | — | W35 | — | 0.5 | OEM-B-12 | — | — | — |
| 2 | — | — | — | — | — | — | — | — | — |
| 3 | PWM 3 | — | W45 | — | 0.5 | OEM-F-20 | — | — | — |
| 4 | PWM 2 | — | W44 | — | 0.5 | OEM-F-19 | — | — | — |
| 5 | PWM 1 | — | W43 | — | 0.5 | OEM-A-5 | — | — | — |
| 6 | — | — | — | — | — | — | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | Injector 1 | — | W41 | — | 0.5 | OEM-A-15 | — | — | — |
| 9 | Injector 1 | — | W37 | — | 0.5 | OEM-A-1 | — | — | — |
| 10 | Coil 1 | — | W33 | — | 0.5 | OEM-A-11 | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | Power Ground 1 | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | Power Ground 2 | — | W14 | — | 0.85 | SP-GND-1 | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Injector 2 | — | W38 | — | 0.5 | OEM-A-2 | — | — | — |
| 17 | Injector 2 | — | W42 | — | 0.5 | OEM-A-16 | — | — | — |
| 18 | Coil 2 | — | W34 | — | 0.5 | OEM-A-24 | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | — | — | — | — | — | — | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | — | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
| 25 | Injector 4 | — | W40 | — | 0.5 | OEM-A-14 | — | — | — |
| 26 | Coil 4 | — | W36 | — | 0.5 | OEM-B-11 | — | — | — |
| 27 | — | — | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | — | — |
| 29 | — | — | — | — | — | — | — | — | — |
| 30 | — | — | — | — | — | — | — | — | — |
| 31 | Ignition 12v In | — | W7 | — | 0.85 | SP-14V-1 | — | — | — |
| 32 | — | — | — | — | — | — | — | — | — |
| 33 | — | — | — | — | — | — | — | — | — |
| 34 | Injector 3 | — | W39 | — | 0.5 | OEM-A-3 | — | — | — |
T4-C2
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Analogue 2 | — | W47 | — | 0.5 | OEM-F-13 | — | — | — |
| 2 | Wheel 1 | — | W31 | — | 0.5 | OEM-B-7 | — | — | — |
| 3 | Analogue 10 | — | W62 | — | 0.5 | OEM-D-20 | — | — | — |
| 4 | Digital 1 | — | W63 | — | 0.5 | OEM-C-7 | — | — | — |
| 5 | Analogue 3 | — | W48 | — | 0.5 | OEM-F-12 | — | — | — |
| 6 | Analogue 4 | — | W49 | — | 0.5 | OEM-D-12 | — | — | — |
| 7 | Thermistor 1 | — | W50 | — | 0.5 | OEM-D-7 | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | 5v Output | — | W28 | — | 0.5 | SP-5V1-1 | — | — | — |
| 10 | Analogue 1 | — | W46 | — | 0.5 | OEM-D-9 | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | Crank | — | W30 | — | 0.5 | OEM-B-8 | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | Digital 4 | — | W64 | — | 0.5 | OEM-F-16 | — | — | — |
| 15 | Digital 5 | — | W65 | — | 0.5 | OEM-F-6 | — | — | — |
| 16 | Analogue 11 | — | W66 | — | 0.5 | OEM-B-1 | — | — | — |
| 17 | Thermistor 3 | — | — | — | — | — | — | — | — |
| 18 | — | — | — | — | — | — | — | — | — |
| 19 | Analogue 6 | — | W57 | — | 0.5 | OEM-D-16 | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | Sensor Ground | — | W24 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Cam 1 | — | W32 | — | 0.5 | OEM-B-6 | — | — | — |
| 23 | — | — | — | — | — | — | — | — | — |
| 24 | 5v Output | — | W29 | — | 0.5 | OEM-F-14 | — | — | — |
| 25 | Thermistor 2 | — | W61 | — | 0.5 | OEM-D-8 | — | — | — |
| 26 | CAN High | — | — | — | — | — | — | — | — |
| 27 | — | — | — | — | — | — | — | — | — |
| 28 | CAN Low | — | — | — | — | — | — | — | — |
| 29 | — | — | — | — | — | — | — | — | — |
| 30 | — | — | — | — | — | — | — | — | — |
| 31 | — | — | — | — | — | — | — | — | — |
| 32 | — | — | — | — | — | — | — | — | — |
| 33 | Sensor Ground | — | W25 | — | 0.5 | SP-0V-1 | — | — | — |
| 34 | Analogue 9 | — | W60 | — | 0.5 | OEM-D-19 | — | — | — |
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 | — | W53 | — | 0.5 | OEM-A-10 | — | — | — |
| 10 | PWM 8 | — | W56 | — | 0.5 | OEM-A-9 | — | — | — |
| 11 | Lambda 1 Trim Resistor | — | — | — | — | — | — | — | — |
| 12 | Lambda 1 Nernst Voltage | — | — | — | — | — | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Analogue 7 | — | W58 | — | 0.5 | OEM-D-17 | — | — | — |
| 18 | Analogue 8 | — | W59 | — | 0.5 | OEM-D-18 | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | — | — | — | — | — | — | — | — | — |
| 22 | PWM 4 | — | W51 | — | 0.5 | OEM-F-4 | — | — | — |
| 23 | PWM 5 | — | W52 | — | 0.5 | OEM-A-8 | — | — | — |
| 24 | PWM 6 | — | W54 | — | 0.5 | OEM-A-22 | — | — | — |
| 25 | PWM 7 | — | W55 | — | 0.5 | OEM-A-23 | — | — | — |
| 26 | Permanent 12v | — | W8 | — | 0.85 | OEM-D-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-A-1 | Injector 1 (INJ1) | injector_out | T4-C1-9 | Injector 1 | injector_out | single_source | |
| OEM-A-10 | Rear secondary O2 heater (RSO2SHTC) | low_side_out | T4-C3-9 | Lambda 1 Heater Negative | low_side_out | single_source | |
| OEM-A-11 | Ignition coil 1 (IGN COIL1) | ignition_out | T4-C1-10 | Coil 1 | ignition_out | single_source | |
| OEM-A-12 | Power ground (PG1) | ground | T4-C1-13 + T4-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-A-13 | ECM power source (IGP1) | power_in | T4-C1-31 | Ignition 12v In | power_in | single_source | |
| OEM-A-14 | Injector 4 (INJ4) | injector_out | T4-C1-25 | Injector 4 | injector_out | single_source | |
| OEM-A-15 | Injector 5 (INJ5) | injector_out | T4-C1-9 | Injector 1 | injector_out | single_source | |
| OEM-A-16 | Injector 6 (INJ6) | injector_out | T4-C1-17 | Injector 2 | injector_out | single_source | |
| OEM-A-17 | EVAP bypass solenoid (2WBS) | low_side_out | — | — | — | single_source | |
| OEM-A-2 | Injector 2 (INJ2) | injector_out | T4-C1-17 | Injector 2 | injector_out | single_source | |
| OEM-A-20 | IAB control solenoid (IABCS) | low_side_out | — | — | — | single_source | |
| OEM-A-21 | EVAP purge control solenoid (PCS) | low_side_out | — | — | — | single_source | |
| OEM-A-22 | Front primary O2 heater (FPO2SHTC) | low_side_out | T4-C3-24 | PWM 6 | low_side_out | single_source | |
| OEM-A-23 | Rear primary O2 heater (RPO2SHTC) | low_side_out | T4-C3-25 | PWM 7 | low_side_out | single_source | |
| OEM-A-24 | Ignition coil 2 (IGN COIL2) | ignition_out | T4-C1-18 | Coil 2 | ignition_out | single_source | |
| OEM-A-25 | Power ground (PG2) | ground | T4-C1-13 + T4-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-A-26 | Logic ground (LG1) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-A-3 | Injector 3 (INJ3) | injector_out | T4-C1-34 | Injector 3 | injector_out | single_source | |
| OEM-A-4 | EVAP canister vent shut valve (VSV) | low_side_out | — | — | — | single_source | |
| OEM-A-5 | Fuel pump relay (FLR1) | low_side_out | T4-C1-5 | PWM 1 | low_side_out | single_source | |
| OEM-A-6 | EGR control solenoid (ESOL) | low_side_out | — | — | — | single_source | |
| OEM-A-7 | Malfunction indicator lamp (MIL) | low_side_out | — | — | — | single_source | |
| OEM-A-8 | A/C clutch relay (ACC) | low_side_out | T4-C3-23 | PWM 5 | low_side_out | single_source | |
| OEM-A-9 | Front secondary O2 heater (FSO2SHTC) | low_side_out | T4-C3-10 | PWM 8 | low_side_out | single_source | |
| OEM-B-1 | VTEC pressure switch front (VTP SWF) | digital_in | T4-C2-16 | Analogue 11 | analog_in | single_source | |
| OEM-B-10 | Ignition coil 5 (IGN COIL5) | ignition_out | — | — | — | single_source | |
| OEM-B-11 | Ignition coil 4 (IGN COIL4) | ignition_out | T4-C1-26 | Coil 4 | ignition_out | single_source | |
| OEM-B-12 | Ignition coil 3 (IGN COIL3) | ignition_out | T4-C1-1 | Coil 3 | ignition_out | single_source | |
| OEM-B-13 | Cylinder position sensor 2 return (CYP 2M) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-B-14 | Cylinder position sensor 1 return (CYP 1M) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-B-15 | Crank position sensor 2 return (CKP 2M) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-B-16 | Crank position sensor 1 return (CKP 1M) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-B-2 | Ignition coil 6 (IGN COIL6) | ignition_out | — | — | — | single_source | |
| OEM-B-3 | VTEC pressure switch rear (VTP SWR) | digital_in | — | — | — | single_source | |
| OEM-B-4 | Neutral switch (NT SW, M/T) | digital_in | — | — | — | single_source | |
| OEM-B-5 | Cylinder position sensor 2 + (CYP 2P) | trigger_in | — | — | — | single_source | |
| OEM-B-6 | Cylinder position sensor 1 + (CYP 1P) | trigger_in | T4-C2-22 | Cam 1 | trigger_in | single_source | |
| OEM-B-7 | Crank position sensor 2 + (CKP 2P) | trigger_in | T4-C2-2 | Wheel 1 | digital_in | single_source | |
| OEM-B-8 | Crank position sensor 1 + (CKP 1P) | trigger_in | T4-C2-12 | Crank | trigger_in | single_source | |
| OEM-B-9 | Logic ground (LG2) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-C-1 | ECM power source (IGP2) | power_in | T4-C1-31 | Ignition 12v In | power_in | single_source | |
| OEM-C-4 | Clutch switch (MTCLS, M/T) | digital_in | — | — | — | single_source | |
| OEM-C-6 | Starter switch (STS) | digital_in | — | — | — | single_source | |
| OEM-C-7 | Vehicle speed sensor (VSS) | digital_in | T4-C2-4 | Digital 1 | digital_in | single_source | |
| OEM-C-8 | Engine speed pulse (NEP) | tacho_out | — | — | — | single_source | |
| OEM-D-1 | Backup power (VBU) | power_in | T4-C3-26 | Permanent 12v | power_in | single_source | |
| OEM-D-10 | Sensor 5V supply (VCC2) | vref | T4-C2-9 | 5v Output | vref | single_source | |
| OEM-D-11 | Sensor ground (SG2) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-D-12 | Throttle position sensor (TPS) | analog_in | T4-C2-6 | Analogue 4 | analog_in | single_source | |
| OEM-D-13 | Knock sensor front (KSF) | knock_in | — | — | — | single_source | |
| OEM-D-16 | Front secondary O2 signal (O2S FS) | lambda_nb_in | T4-C2-19 | Analogue 6 | analog_in | single_source | |
| OEM-D-17 | Rear secondary O2 signal (O2S RS) | lambda_nb_in | T4-C3-17 | Analogue 7 | analog_in | single_source | |
| OEM-D-18 | Front primary O2 signal (O2S FP) | lambda_nb_in | T4-C3-18 | Analogue 8 | analog_in | single_source | |
| OEM-D-19 | Rear primary O2 signal (O2S RP) | lambda_nb_in | T4-C2-34 | Analogue 9 | analog_in | single_source | |
| OEM-D-2 | Knock sensor rear (KSR) | knock_in | — | — | — | single_source | |
| OEM-D-20 | EGR valve lift sensor (EGRL) | analog_in | T4-C2-3 | Analogue 10 | analog_in | single_source | |
| OEM-D-4 | K-line diagnostics | serial | — | — | — | single_source | |
| OEM-D-7 | Engine coolant temperature (ECT) | temp_in | T4-C2-7 | Thermistor 1 | temp_in | single_source | |
| OEM-D-8 | Intake air temperature (IAT) | temp_in | T4-C2-25 | Thermistor 2 | temp_in | single_source | |
| OEM-D-9 | MAP sensor | analog_in | T4-C2-10 | Analogue 1 | analog_in | single_source | |
| OEM-F-1 | Sensor 5V supply (VCC1) | vref | T4-C2-9 | 5v Output | vref | single_source | |
| OEM-F-12 | Accelerator pedal position 2 (AP2) | analog_in | T4-C2-5 | Analogue 3 | analog_in | single_source | |
| OEM-F-13 | Accelerator pedal position 1 (AP1) | analog_in | T4-C2-1 | Analogue 2 | analog_in | single_source | |
| OEM-F-14 | Accelerator pedal 5V supply (VCC3) | vref | T4-C2-24 | 5v Output | vref | single_source | |
| OEM-F-15 | Accelerator pedal ground (SG3) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-F-16 | Brake switch 1 (BKSW1) | digital_in | T4-C2-14 | Digital 4 | digital_in | single_source | |
| OEM-F-19 | VTEC solenoid front (VT SOLF) | low_side_out | T4-C1-4 | PWM 2 | low_side_out | single_source | |
| OEM-F-2 | Sensor ground (SG1) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-F-20 | VTEC solenoid rear (VT SOLR) | low_side_out | T4-C1-3 | PWM 3 | low_side_out | single_source | |
| OEM-F-4 | Fuel pump relay 2 (FLR2) | low_side_out | T4-C3-22 | PWM 4 | low_side_out | single_source | |
| OEM-F-6 | Brake switch 2 (BKSW2) | digital_in | T4-C2-15 | Digital 5 | digital_in | single_source | |
| OEM-G-10 | Throttle motor common power phases 2&4 (COM2) | power_in | T4-C1-31 | Ignition 12v In | power_in | single_source | |
| OEM-G-11 | Throttle motor phase 3 (PM3) | hbridge_out | — | — | — | single_source | |
| OEM-G-12 | Throttle motor phase 4 (PM4) | hbridge_out | — | — | — | single_source | |
| OEM-G-2 | Throttle motor power source 1 (IGM1) | power_in | T4-C1-31 | Ignition 12v In | power_in | single_source | |
| OEM-G-3 | Throttle motor power source 2 (IGM2) | power_in | T4-C1-31 | Ignition 12v In | power_in | single_source | |
| OEM-G-4 | Throttle motor phase 1 (PM1) | hbridge_out | — | — | — | single_source | |
| OEM-G-5 | Throttle motor phase 2 (PM2) | hbridge_out | — | — | — | single_source | |
| OEM-G-7 | Throttle motor ground 1 (PGM1) | ground | T4-C1-13 + T4-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-G-8 | Throttle motor ground 2 (PGM2) | ground | T4-C1-13 + T4-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-G-9 | Throttle motor common power phases 1&3 (COM1) | power_in | T4-C1-31 | Ignition 12v In | power_in | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-13 | SP-14V-1 | 0.85 | no route | ECM power source (IGP1) | — | |
| W2 | OEM-C-1 | SP-14V-1 | 0.85 | no route | ECM power source (IGP2) | — | |
| W3 | OEM-G-10 | SP-14V-1 | 0.85 | no route | Throttle motor common power phases 2&4 (COM2) | — | |
| W4 | OEM-G-2 | SP-14V-1 | 0.85 | no route | Throttle motor power source 1 (IGM1) | — | |
| W5 | OEM-G-3 | SP-14V-1 | 0.85 | no route | Throttle motor power source 2 (IGM2) | — | |
| W6 | OEM-G-9 | SP-14V-1 | 0.85 | no route | Throttle motor common power phases 1&3 (COM1) | — | |
| W7 | SP-14V-1 | T4-C1-31 | 0.85 | no route | Ignition 12v In | — | |
| W8 | OEM-D-1 | T4-C3-26 | 0.85 | no route | Backup power (VBU) | — | |
| W9 | OEM-A-12 | SP-GND-1 | 0.85 | no route | Power ground (PG1) | — | |
| W10 | OEM-A-25 | SP-GND-1 | 0.85 | no route | Power ground (PG2) | — | |
| W11 | OEM-G-7 | SP-GND-1 | 0.85 | no route | Throttle motor ground 1 (PGM1) | — | |
| W12 | OEM-G-8 | SP-GND-1 | 0.85 | no route | Throttle motor ground 2 (PGM2) | — | |
| W13 | SP-GND-1 | T4-C1-13 | 0.85 | no route | Power Ground 1 | — | |
| W14 | SP-GND-1 | T4-C1-14 | 0.85 | no route | Power Ground 2 | — | |
| W15 | OEM-A-26 | SP-0V-1 | 0.5 | no route | Logic ground (LG1) | — | |
| W16 | OEM-B-13 | SP-0V-1 | 0.5 | no route | Cylinder position sensor 2 return (CYP 2M) | — | |
| W17 | OEM-B-14 | SP-0V-1 | 0.5 | no route | Cylinder position sensor 1 return (CYP 1M) | — | |
| W18 | OEM-B-15 | SP-0V-1 | 0.5 | no route | Crank position sensor 2 return (CKP 2M) | — | |
| W19 | OEM-B-16 | SP-0V-1 | 0.5 | no route | Crank position sensor 1 return (CKP 1M) | — | |
| W20 | OEM-B-9 | SP-0V-1 | 0.5 | no route | Logic ground (LG2) | — | |
| W21 | OEM-D-11 | SP-0V-1 | 0.5 | no route | Sensor ground (SG2) | — | |
| W22 | OEM-F-15 | SP-0V-1 | 0.5 | no route | Accelerator pedal ground (SG3) | — | |
| W23 | OEM-F-2 | SP-0V-1 | 0.5 | no route | Sensor ground (SG1) | — | |
| W24 | SP-0V-1 | T4-C2-21 | 0.5 | no route | Sensor Ground | — | |
| W25 | SP-0V-1 | T4-C2-33 | 0.5 | no route | Sensor Ground | — | |
| W26 | OEM-D-10 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply (VCC2) | — | |
| W27 | OEM-F-1 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply (VCC1) | — | |
| W28 | SP-5V1-1 | T4-C2-9 | 0.5 | no route | 5v Output | — | |
| W29 | OEM-F-14 | T4-C2-24 | 0.5 | no route | Accelerator pedal 5V supply (VCC3) | — | |
| W30 | OEM-B-8 | T4-C2-12 | 0.5 | no route | Crank position sensor 1 + (CKP 1P) | — | |
| W31 | OEM-B-7 | T4-C2-2 | 0.5 | no route | Crank position sensor 2 + (CKP 2P) | — | |
| W32 | OEM-B-6 | T4-C2-22 | 0.5 | no route | Cylinder position sensor 1 + (CYP 1P) | — | |
| W33 | OEM-A-11 | T4-C1-10 | 0.5 | no route | Ignition coil 1 (IGN COIL1) | — | |
| W34 | OEM-A-24 | T4-C1-18 | 0.5 | no route | Ignition coil 2 (IGN COIL2) | — | |
| W35 | OEM-B-12 | T4-C1-1 | 0.5 | no route | Ignition coil 3 (IGN COIL3) | — | |
| W36 | OEM-B-11 | T4-C1-26 | 0.5 | no route | Ignition coil 4 (IGN COIL4) | — | |
| W37 | OEM-A-1 | T4-C1-9 | 0.5 | no route | Injector 1 (INJ1) | — | |
| W38 | OEM-A-2 | T4-C1-17 | 0.5 | no route | Injector 2 (INJ2) | — | |
| W39 | OEM-A-3 | T4-C1-34 | 0.5 | no route | Injector 3 (INJ3) | — | |
| W40 | OEM-A-14 | T4-C1-25 | 0.5 | no route | Injector 4 (INJ4) | — | |
| W41 | OEM-A-15 | T4-C1-9 | 0.5 | no route | Injector 5 (INJ5) | — | |
| W42 | OEM-A-16 | T4-C1-17 | 0.5 | no route | Injector 6 (INJ6) | — | |
| W43 | OEM-A-5 | T4-C1-5 | 0.5 | no route | Fuel pump relay (FLR1) | — | |
| W44 | OEM-F-19 | T4-C1-4 | 0.5 | no route | VTEC solenoid front (VT SOLF) | — | |
| W45 | OEM-F-20 | T4-C1-3 | 0.5 | no route | VTEC solenoid rear (VT SOLR) | — | |
| W46 | OEM-D-9 | T4-C2-10 | 0.5 | no route | MAP sensor | — | |
| W47 | OEM-F-13 | T4-C2-1 | 0.5 | no route | Accelerator pedal position 1 (AP1) | — | |
| W48 | OEM-F-12 | T4-C2-5 | 0.5 | no route | Accelerator pedal position 2 (AP2) | — | |
| W49 | OEM-D-12 | T4-C2-6 | 0.5 | no route | Throttle position sensor (TPS) | — | |
| W50 | OEM-D-7 | T4-C2-7 | 0.5 | no route | Engine coolant temperature (ECT) | — | |
| W51 | OEM-F-4 | T4-C3-22 | 0.5 | no route | Fuel pump relay 2 (FLR2) | — | |
| W52 | OEM-A-8 | T4-C3-23 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W53 | OEM-A-10 | T4-C3-9 | 0.5 | no route | Rear secondary O2 heater (RSO2SHTC) | — | |
| W54 | OEM-A-22 | T4-C3-24 | 0.5 | no route | Front primary O2 heater (FPO2SHTC) | — | |
| W55 | OEM-A-23 | T4-C3-25 | 0.5 | no route | Rear primary O2 heater (RPO2SHTC) | — | |
| W56 | OEM-A-9 | T4-C3-10 | 0.5 | no route | Front secondary O2 heater (FSO2SHTC) | — | |
| W57 | OEM-D-16 | T4-C2-19 | 0.5 | no route | Front secondary O2 signal (O2S FS) | — | |
| W58 | OEM-D-17 | T4-C3-17 | 0.5 | no route | Rear secondary O2 signal (O2S RS) | — | |
| W59 | OEM-D-18 | T4-C3-18 | 0.5 | no route | Front primary O2 signal (O2S FP) | — | |
| W60 | OEM-D-19 | T4-C2-34 | 0.5 | no route | Rear primary O2 signal (O2S RP) | — | |
| W61 | OEM-D-8 | T4-C2-25 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W62 | OEM-D-20 | T4-C2-3 | 0.5 | no route | EGR valve lift sensor (EGRL) | — | |
| W63 | OEM-C-7 | T4-C2-4 | 0.5 | no route | Vehicle speed sensor (VSS) | — | |
| W64 | OEM-F-16 | T4-C2-14 | 0.5 | no route | Brake switch 1 (BKSW1) | — | |
| W65 | OEM-F-6 | T4-C2-15 | 0.5 | no route | Brake switch 2 (BKSW2) | — | |
| W66 | OEM-B-1 | T4-C2-16 | 0.5 | no route | VTEC pressure switch front (VTP SWF) | — |
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) | 43.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (18)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | DBW_SENSOR_INPUT | tps | Only 0 throttle-position track(s) found. An electronic throttle needs two (main and sub) so the ECU can cross-check them. |
| error | NET_MERGED | OEM-A-1 + OEM-A-15 + T4-C1-9 | 2 different OEM functions share one net: OEM-A-1 Injector 1 (INJ1); OEM-A-15 Injector 5 (INJ5) |
| error | NET_MERGED | OEM-A-16 + OEM-A-2 + T4-C1-17 | 2 different OEM functions share one net: OEM-A-16 Injector 6 (INJ6); OEM-A-2 Injector 2 (INJ2) |
| error | PHYS_REQUIRED_OPEN | T4-C3-27 | T4-C3-27 "Permanent 12v" is required but not wired. |
| error | REQUIRED_UNMAPPED | OEM-B-10 | Required OEM function "Ignition coil 5 (IGN COIL5)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B-2 | Required OEM function "Ignition coil 6 (IGN COIL6)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-D-13 | Required OEM function "Knock sensor front (KSF)" (knock_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-D-2 | Required OEM function "Knock sensor rear (KSR)" (knock_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-G-11 | Required OEM function "Throttle motor phase 3 (PM3)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-G-12 | Required OEM function "Throttle motor phase 4 (PM4)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-G-4 | Required OEM function "Throttle motor phase 1 (PM1)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-G-5 | Required OEM function "Throttle motor phase 2 (PM2)" (hbridge_out) 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-B-1 ↔ T4-C2-16 | OEM-B-1 "VTEC pressure switch front (VTP SWF)" [digital_in] is wired to T4-C2-16 "Analogue 11" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | NET_FAMILY | OEM-B-7 ↔ T4-C2-2 | OEM-B-7 "Crank position sensor 2 + (CKP 2P)" [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 | UNMAPPED | OEM | 13 optional OEM pins are not mapped: OEM-A-17 EVAP bypass solenoid (2WBS); OEM-A-20 IAB control solenoid (IABCS); OEM-A-21 EVAP purge control solenoid (PCS); OEM-A-4 EVAP canister vent shut valve (VSV); OEM-A-6 EGR control solenoid (ESOL); OEM-A-7 Malfunction indicator lamp (MIL); OEM-B-3 VTEC pressure switch rear (VTP SWR); OEM-B-4 Neutral switch (NT SW, M/T); OEM-B-5 Cylinder position sensor 2 + (CYP 2P); OEM-C-4 Clutch switch (MTCLS, M/T); OEM-C-6 Starter switch (STS); OEM-C-8 Engine speed pulse (NEP); OEM-D-4 K-line diagnostics |
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 - Trigger pattern for Honda C32B not found in the ECU's docs (C32B (NSX) not documented.) - No knock input; the stock knock sensor would be unused - Only 4 ignition outputs for 6 cylinders: wasted spark (pair coils per firing order) - Only 4 injector outputs for 6 injectors: batch / semi-sequential injection - This car has Honda Type 1A (1997+) immobilizer; needs a delete/bypass 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-D 13: Knock sensor front (KSF): no free knock input on DTAFast T4 - OEM-D 2: Knock sensor rear (KSR): no free knock input on DTAFast T4 - OEM-B 10: Ignition coil 5 (IGN COIL5): no free ignition output on DTAFast T4 - OEM-B 2: Ignition coil 6 (IGN COIL6): no free ignition output on DTAFast T4 - OEM-G 4: Throttle motor phase 1 (PM1): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-G 5: Throttle motor phase 2 (PM2): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-G 11: Throttle motor phase 3 (PM3): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-G 12: Throttle motor phase 4 (PM4): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - T4-C3 27: Permanent 12v: required by DTAFast T4 but no stock pin feeds it; wire by hand Not wired: - OEM-B 5: Cylinder position sensor 2 + (CYP 2P): no free cam_vr/cam_hall/frequency_in input on DTAFast T4 - OEM-A 17: EVAP bypass solenoid (2WBS): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-A 20: IAB control solenoid (IABCS): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-A 21: EVAP purge control solenoid (PCS): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-A 4: EVAP canister vent shut valve (VSV): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-A 6: EGR control solenoid (ESOL): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-A 7: Malfunction indicator lamp (MIL): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-C 8: Engine speed pulse (NEP): no free tacho/frequency_out/low_side/ls_hs on DTAFast T4 - OEM-B 3: VTEC pressure switch rear (VTP SWR): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-B 4: Neutral switch (NT SW, M/T): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C 4: Clutch switch (MTCLS, M/T): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C 6: Starter switch (STS): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-D 4: K-line diagnostics: no free k_line on DTAFast T4
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | 1997-2005 Acura NSX Service Manual §11 (PGM-FI), ECM terminal arrangement | https://www.manualslib.com/manual/1540331/Acura-Nsx-1997.html | — | — | — |
| 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 | — | — | — |