Toyota Mark II JZX90 1992-96 (1JZ-GTE, non-VVT) → DTAFast T4 (auto)
Toyota Mark II JZX90 1992-96 (1JZ-GTE, non-VVT) — DTAFast — T4
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-12
Before you start
Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 5: read the Findings page before cutting any wire |
| Size of the job | 53 wires · 10 connectors · 2 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 3-1447221-4 |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-C86-22 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-C86-23 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | T4-C1-31 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-C86-14 | T4-C3-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-C85-16 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-C88-28 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-C88-33 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-C88-34 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | T4-C1-13 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | T4-C1-14 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-C84-11 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-C84-17 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-C84-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-C84-6 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | T4-C2-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | T4-C2-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-C84-1 | T4-C2-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-C84-5 | T4-C2-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-C84-10 | T4-C2-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-C84-16 | T4-C2-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-C88-24 | T4-C1-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-C88-16 | T4-C1-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-C88-15 | T4-C1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-C88-26 | T4-C1-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-C88-10 | T4-C1-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-C88-9 | T4-C1-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-C88-8 | T4-C1-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-C84-8 | T4-C2-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-C84-7 | T4-C2-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-C84-20 | T4-C2-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-C85-2 | T4-C1-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-C86-5 | T4-C1-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-C88-3 | T4-C3-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-C88-11 | T4-C1-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-C88-23 | T4-C3-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-C88-17 | T4-C3-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-C88-22 | T4-C3-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-C88-21 | T4-C3-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-C88-20 | T4-C3-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-C85-3 | T4-C1-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-C84-12 | T4-C2-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-C84-13 | T4-C2-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-C84-14 | T4-C2-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-C86-13 | T4-C2-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-C86-12 | T4-C2-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-C84-4 | T4-C2-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-C84-9 | T4-C2-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-C85-5 | T4-C2-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-C86-7 | T4-C3-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-C86-10 | T4-C3-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-C86-11 | T4-C2-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-C86-6 | T4-C2-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-C85-14 | 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-C2-24 | T4-C2-21 | open (OL) | 5 V sensor reference 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-C3-26 | open (OL) | power ground must not touch +12 V supply | |
| 5 | T4-C2-21 | T4-C1-31 | open (OL) | sensor ground must not touch +12 V supply | |
| 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-C84
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Sensor supply +5V (VCC) | — | W17 | — | 0.5 | T4-C2-24 | — | — | — |
| 10 | Cam position 1 (G1) | — | W19 | — | 0.5 | T4-C2-22 | — | — | — |
| 11 | Cam 1 return (G1-) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 12 | TRAC throttle position (VTA2) | — | W41 | — | 0.5 | T4-C2-5 | — | — | — |
| 13 | O2 sensor (OX1) | — | W42 | — | 0.5 | T4-C2-6 | — | — | — |
| 14 | Intake air temperature (THA) | — | W43 | — | 0.5 | T4-C2-25 | — | — | — |
| 15 | OD direct-clutch speed sensor (NCO+) | — | — | — | — | — | — | — | — |
| 16 | Cam position 2 (G2) | — | W20 | — | 0.5 | T4-C2-2 | — | — | — |
| 17 | Cam 2 return (G2-) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 20 | Coolant temperature (THW) | — | W30 | — | 0.5 | T4-C2-7 | — | — | — |
| 22 | Sensor ground (E2) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | OD direct-clutch speed sensor (NCO-) | — | — | — | — | — | — | — | — |
| 4 | No.2 speed sensor (SP2-) | — | W46 | — | 0.5 | T4-C2-14 | — | — | — |
| 5 | Crank position (NE) | — | W18 | — | 0.5 | T4-C2-12 | — | — | — |
| 6 | Crank sensor return (NE-) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | Throttle position (VTA1) | — | W29 | — | 0.5 | T4-C2-1 | — | — | — |
| 8 | Manifold pressure (PIM) | — | W28 | — | 0.5 | T4-C2-10 | — | — | — |
| 9 | No.2 speed sensor (SP2+) | — | W47 | — | 0.5 | T4-C2-15 | — | — | — |
OEM-C85
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Slave engine speed (NEO) | — | — | — | — | — | — | — | — |
| 10 | Fuel pump diagnostic (DI) | — | — | — | — | — | — | — | — |
| 11 | Slave TRAC throttle position (VTO2) | — | — | — | — | — | — | — | — |
| 14 | ABS active (MT only) | — | W53 | — | 0.5 | T4-C2-16 | — | — | — |
| 16 | Power ground (E1) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | EFI main relay control (M-REL) | — | W31 | — | 0.5 | T4-C1-5 | — | — | — |
| 3 | Check-engine lamp (W) | — | W40 | — | 0.5 | T4-C1-25 | — | — | — |
| 4 | Fuel pump control (FPC) | — | — | — | — | — | — | — | — |
| 5 | Diagnostic test 1 (TE1) | — | W48 | — | 0.5 | T4-C2-19 | — | — | — |
| 6 | Timing retard (TR) | — | — | — | — | — | — | — | — |
| 7 | Slave throttle position (VTO1) | — | — | — | — | — | — | — | — |
OEM-C86
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Diagnostic test terminal (TT) | — | — | — | — | — | — | — | — |
| 10 | A/T 2nd-gear indicator (2) | — | W50 | — | 0.5 | T4-C3-18 | — | — | — |
| 11 | Diagnostic test 2 (TE2) | — | W51 | — | 0.5 | T4-C2-34 | — | — | — |
| 12 | No.1 speed sensor (SP1) | — | W45 | — | 0.5 | T4-C2-4 | — | — | — |
| 13 | Cat temperature sensor (CCO) | — | W44 | — | 0.5 | T4-C2-17 | — | — | — |
| 14 | Battery constant (BATT) | — | W4 | — | 0.85 | T4-C3-26 | — | — | — |
| 17 | A/T throttle position (L3) | — | — | — | — | — | — | — | — |
| 18 | A/T throttle position (L2) | — | — | — | — | — | — | — | — |
| 19 | A/T throttle position (L1) | — | — | — | — | — | — | — | — |
| 2 | A/T low-gear indicator (L) | — | — | — | — | — | — | — | — |
| 20 | A/C request (A/C) | — | — | — | — | — | — | — | — |
| 22 | EFI main relay power (+B) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 23 | EFI main relay power (+B1) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 25 | Stop light switch (STP) | — | — | — | — | — | — | — | — |
| 28 | Electrical load sense (ELS) | — | — | — | — | — | — | — | — |
| 3 | A/T power/normal mode (P) | — | — | — | — | — | — | — | — |
| 5 | A/C clutch relay (ACMG) | — | W32 | — | 0.5 | T4-C1-4 | — | — | — |
| 6 | A/T overdrive disable 2 (OD2) | — | W52 | — | 0.5 | T4-C2-3 | — | — | — |
| 7 | A/T overdrive disable 1 (OD1) | — | W49 | — | 0.5 | T4-C3-17 | — | — | — |
| 8 | Cat temp warning light (EGW) | — | — | — | — | — | — | — | — |
| 9 | Ignition switch (IGSW) | — | — | — | — | — | — | — | — |
OEM-C88
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Injector 1 (#10, cyl 1&4) | — | W25 | — | 0.5 | T4-C1-9 | — | — | — |
| 11 | A/T shift solenoid 1 (S1) | — | W34 | — | 0.5 | T4-C1-3 | — | — | — |
| 12 | Igniter feedback (IGF) | — | — | — | — | — | — | — | — |
| 13 | Starter signal (STA) | — | — | — | — | — | — | — | — |
| 14 | Neutral/park switch (NSW) | — | — | — | — | — | — | — | — |
| 15 | Ignition 3 (IGT3) | — | W23 | — | 0.5 | T4-C1-1 | — | — | — |
| 16 | Ignition 2 (IGT2) | — | W22 | — | 0.5 | T4-C1-18 | — | — | — |
| 17 | A/T shift solenoid 2 (S2) | — | W36 | — | 0.5 | T4-C3-23 | — | — | — |
| 19 | Voltage feedback (VF) | — | — | — | — | — | — | — | — |
| 20 | ISC stepper coil 4 (ISCV4) | — | W39 | — | 0.5 | T4-C3-10 | — | — | — |
| 21 | ISC stepper coil 3 (ISCV3) | — | W38 | — | 0.5 | T4-C3-25 | — | — | — |
| 22 | ISC stepper coil 2 (ISCV2) | — | W37 | — | 0.5 | T4-C3-24 | — | — | — |
| 23 | ISC stepper coil 1 (ISCV1) | — | W35 | — | 0.5 | T4-C3-22 | — | — | — |
| 24 | Ignition 1 (IGT1) | — | W21 | — | 0.5 | T4-C1-10 | — | — | — |
| 26 | Ignition 4 (IGT4) | — | W24 | — | 0.5 | T4-C1-26 | — | — | — |
| 27 | A/T lock-up solenoid (S3) | — | — | — | — | — | — | — | — |
| 28 | Power ground (E11) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 29 | Ignition 6 (IGT6) | — | — | — | — | — | — | — | — |
| 3 | O2 heater (HT) | — | W33 | — | 0.5 | T4-C3-9 | — | — | — |
| 30 | Ignition 5 (IGT5) | — | — | — | — | — | — | — | — |
| 31 | TRAC throttle idle switch (IDL2) | — | — | — | — | — | — | — | — |
| 32 | TPS idle switch (IDL1) | — | — | — | — | — | — | — | — |
| 33 | Power ground (E02) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 34 | Power ground (E01) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Knock sensor 2 (KNK2, rear) | — | — | — | — | — | — | — | — |
| 5 | Knock sensor 1 (KNK1, front) | — | — | — | — | — | — | — | — |
| 7 | EVAP purge VSV | — | — | — | — | — | — | — | — |
| 8 | Injector 3 (#30, cyl 2&6) | — | W27 | — | 0.5 | T4-C1-34 | — | — | — |
| 9 | Injector 2 (#20, cyl 3&5) | — | W26 | — | 0.5 | T4-C1-17 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | OEM-C84-11 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-C84-17 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-C84-22 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-C84-6 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | T4-C2-21 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | T4-C2-33 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-C86-22 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-C86-23 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | T4-C1-31 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-C85-16 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-C88-28 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-C88-33 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-C88-34 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | T4-C1-13 | — | — | — |
| 1 | — | — | W10 | — | 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 | — | W23 | — | 0.5 | OEM-C88-15 | — | — | — |
| 2 | — | — | — | — | — | — | — | — | — |
| 3 | PWM 3 | — | W34 | — | 0.5 | OEM-C88-11 | — | — | — |
| 4 | PWM 2 | — | W32 | — | 0.5 | OEM-C86-5 | — | — | — |
| 5 | PWM 1 | — | W31 | — | 0.5 | OEM-C85-2 | — | — | — |
| 6 | — | — | — | — | — | — | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | Injector 1 | — | W25 | — | 0.5 | OEM-C88-10 | — | — | — |
| 10 | Coil 1 | — | W21 | — | 0.5 | OEM-C88-24 | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | Power Ground 1 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | Power Ground 2 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Injector 2 | — | W26 | — | 0.5 | OEM-C88-9 | — | — | — |
| 18 | Coil 2 | — | W22 | — | 0.5 | OEM-C88-16 | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | — | — | — | — | — | — | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | — | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
| 25 | Injector 4 | — | W40 | — | 0.5 | OEM-C85-3 | — | — | — |
| 26 | Coil 4 | — | W24 | — | 0.5 | OEM-C88-26 | — | — | — |
| 27 | — | — | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | — | — |
| 29 | — | — | — | — | — | — | — | — | — |
| 30 | — | — | — | — | — | — | — | — | — |
| 31 | Ignition 12v In | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 32 | — | — | — | — | — | — | — | — | — |
| 33 | — | — | — | — | — | — | — | — | — |
| 34 | Injector 3 | — | W27 | — | 0.5 | OEM-C88-8 | — | — | — |
T4-C2
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Analogue 2 | — | W29 | — | 0.5 | OEM-C84-7 | — | — | — |
| 2 | Wheel 1 | — | W20 | — | 0.5 | OEM-C84-16 | — | — | — |
| 3 | Analogue 10 | — | W52 | — | 0.5 | OEM-C86-6 | — | — | — |
| 4 | Digital 1 | — | W45 | — | 0.5 | OEM-C86-12 | — | — | — |
| 5 | Analogue 3 | — | W41 | — | 0.5 | OEM-C84-12 | — | — | — |
| 6 | Analogue 4 | — | W42 | — | 0.5 | OEM-C84-13 | — | — | — |
| 7 | Thermistor 1 | — | W30 | — | 0.5 | OEM-C84-20 | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | 5v Output | — | — | — | — | — | — | — | — |
| 10 | Analogue 1 | — | W28 | — | 0.5 | OEM-C84-8 | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | Crank | — | W18 | — | 0.5 | OEM-C84-5 | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | Digital 4 | — | W46 | — | 0.5 | OEM-C84-4 | — | — | — |
| 15 | Digital 5 | — | W47 | — | 0.5 | OEM-C84-9 | — | — | — |
| 16 | Analogue 11 | — | W53 | — | 0.5 | OEM-C85-14 | — | — | — |
| 17 | Thermistor 3 | — | W44 | — | 0.5 | OEM-C86-13 | — | — | — |
| 18 | — | — | — | — | — | — | — | — | — |
| 19 | Analogue 6 | — | W48 | — | 0.5 | OEM-C85-5 | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | Sensor Ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Cam 1 | — | W19 | — | 0.5 | OEM-C84-10 | — | — | — |
| 23 | — | — | — | — | — | — | — | — | — |
| 24 | 5v Output | — | W17 | — | 0.5 | OEM-C84-1 | — | — | — |
| 25 | Thermistor 2 | — | W43 | — | 0.5 | OEM-C84-14 | — | — | — |
| 26 | CAN High | — | — | — | — | — | — | — | — |
| 27 | — | — | — | — | — | — | — | — | — |
| 28 | CAN Low | — | — | — | — | — | — | — | — |
| 29 | — | — | — | — | — | — | — | — | — |
| 30 | — | — | — | — | — | — | — | — | — |
| 31 | — | — | — | — | — | — | — | — | — |
| 32 | — | — | — | — | — | — | — | — | — |
| 33 | Sensor Ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 34 | Analogue 9 | — | W51 | — | 0.5 | OEM-C86-11 | — | — | — |
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 | — | W33 | — | 0.5 | OEM-C88-3 | — | — | — |
| 10 | PWM 8 | — | W39 | — | 0.5 | OEM-C88-20 | — | — | — |
| 11 | Lambda 1 Trim Resistor | — | — | — | — | — | — | — | — |
| 12 | Lambda 1 Nernst Voltage | — | — | — | — | — | — | — | — |
| 13 | — | — | — | — | — | — | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Analogue 7 | — | W49 | — | 0.5 | OEM-C86-7 | — | — | — |
| 18 | Analogue 8 | — | W50 | — | 0.5 | OEM-C86-10 | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | — | — | — | — | — | — | — | — | — |
| 22 | PWM 4 | — | W35 | — | 0.5 | OEM-C88-23 | — | — | — |
| 23 | PWM 5 | — | W36 | — | 0.5 | OEM-C88-17 | — | — | — |
| 24 | PWM 6 | — | W37 | — | 0.5 | OEM-C88-22 | — | — | — |
| 25 | PWM 7 | — | W38 | — | 0.5 | OEM-C88-21 | — | — | — |
| 26 | Permanent 12v | — | W4 | — | 0.85 | OEM-C86-14 | — | — | — |
| 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-C84-1 | Sensor supply +5V (VCC) | vref | T4-C2-24 | 5v Output | vref | single_source | |
| OEM-C84-10 | Cam position 1 (G1) | trigger_in | T4-C2-22 | Cam 1 | trigger_in | single_source | |
| OEM-C84-11 | Cam 1 return (G1-) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-C84-12 | TRAC throttle position (VTA2) | analog_in | T4-C2-5 | Analogue 3 | analog_in | single_source | |
| OEM-C84-13 | O2 sensor (OX1) | lambda_nb_in | T4-C2-6 | Analogue 4 | analog_in | single_source | |
| OEM-C84-14 | Intake air temperature (THA) | temp_in | T4-C2-25 | Thermistor 2 | temp_in | single_source | |
| OEM-C84-15 | OD direct-clutch speed sensor (NCO+) | digital_in | — | — | — | single_source | |
| OEM-C84-16 | Cam position 2 (G2) | trigger_in | T4-C2-2 | Wheel 1 | digital_in | single_source | |
| OEM-C84-17 | Cam 2 return (G2-) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-C84-20 | Coolant temperature (THW) | temp_in | T4-C2-7 | Thermistor 1 | temp_in | single_source | |
| OEM-C84-22 | Sensor ground (E2) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-C84-3 | OD direct-clutch speed sensor (NCO-) | digital_in | — | — | — | single_source | |
| OEM-C84-4 | No.2 speed sensor (SP2-) | digital_in | T4-C2-14 | Digital 4 | digital_in | single_source | |
| OEM-C84-5 | Crank position (NE) | trigger_in | T4-C2-12 | Crank | trigger_in | single_source | |
| OEM-C84-6 | Crank sensor return (NE-) | sensor_ground | T4-C2-21 + T4-C2-33 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-C84-7 | Throttle position (VTA1) | analog_in | T4-C2-1 | Analogue 2 | analog_in | single_source | |
| OEM-C84-8 | Manifold pressure (PIM) | analog_in | T4-C2-10 | Analogue 1 | analog_in | single_source | |
| OEM-C84-9 | No.2 speed sensor (SP2+) | digital_in | T4-C2-15 | Digital 5 | digital_in | single_source | |
| OEM-C85-1 | Slave engine speed (NEO) | digital_in | — | — | — | single_source | |
| OEM-C85-10 | Fuel pump diagnostic (DI) | digital_in | — | — | — | single_source | |
| OEM-C85-11 | Slave TRAC throttle position (VTO2) | analog_out | — | — | — | single_source | |
| OEM-C85-14 | ABS active (MT only) | digital_in | T4-C2-16 | Analogue 11 | analog_in | single_source | |
| OEM-C85-16 | Power ground (E1) | ground | T4-C1-13 + T4-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-C85-2 | EFI main relay control (M-REL) | low_side_out | T4-C1-5 | PWM 1 | low_side_out | single_source | |
| OEM-C85-3 | Check-engine lamp (W) | low_side_out | T4-C1-25 | Injector 4 | injector_out | single_source | |
| OEM-C85-4 | Fuel pump control (FPC) | low_side_out | — | — | — | single_source | |
| OEM-C85-5 | Diagnostic test 1 (TE1) | digital_in | T4-C2-19 | Analogue 6 | analog_in | single_source | |
| OEM-C85-6 | Timing retard (TR) | digital_in | — | — | — | single_source | |
| OEM-C85-7 | Slave throttle position (VTO1) | analog_out | — | — | — | single_source | |
| OEM-C86-1 | Diagnostic test terminal (TT) | digital_in | — | — | — | single_source | |
| OEM-C86-10 | A/T 2nd-gear indicator (2) | digital_in | T4-C3-18 | Analogue 8 | analog_in | single_source | |
| OEM-C86-11 | Diagnostic test 2 (TE2) | digital_in | T4-C2-34 | Analogue 9 | analog_in | single_source | |
| OEM-C86-12 | No.1 speed sensor (SP1) | digital_in | T4-C2-4 | Digital 1 | digital_in | single_source | |
| OEM-C86-13 | Cat temperature sensor (CCO) | temp_in | T4-C2-17 | Thermistor 3 | temp_in | single_source | |
| OEM-C86-14 | Battery constant (BATT) | power_in | T4-C3-26 | Permanent 12v | power_in | single_source | |
| OEM-C86-17 | A/T throttle position (L3) | digital_in | — | — | — | single_source | |
| OEM-C86-18 | A/T throttle position (L2) | digital_in | — | — | — | single_source | |
| OEM-C86-19 | A/T throttle position (L1) | digital_in | — | — | — | single_source | |
| OEM-C86-2 | A/T low-gear indicator (L) | digital_in | — | — | — | single_source | |
| OEM-C86-20 | A/C request (A/C) | digital_in | — | — | — | single_source | |
| OEM-C86-22 | EFI main relay power (+B) | power_in | T4-C1-31 | Ignition 12v In | power_in | single_source | |
| OEM-C86-23 | EFI main relay power (+B1) | power_in | T4-C1-31 | Ignition 12v In | power_in | single_source | |
| OEM-C86-25 | Stop light switch (STP) | digital_in | — | — | — | single_source | |
| OEM-C86-28 | Electrical load sense (ELS) | digital_in | — | — | — | single_source | |
| OEM-C86-3 | A/T power/normal mode (P) | digital_in | — | — | — | single_source | |
| OEM-C86-5 | A/C clutch relay (ACMG) | low_side_out | T4-C1-4 | PWM 2 | low_side_out | single_source | |
| OEM-C86-6 | A/T overdrive disable 2 (OD2) | digital_in | T4-C2-3 | Analogue 10 | analog_in | single_source | |
| OEM-C86-7 | A/T overdrive disable 1 (OD1) | digital_in | T4-C3-17 | Analogue 7 | analog_in | single_source | |
| OEM-C86-8 | Cat temp warning light (EGW) | low_side_out | — | — | — | single_source | |
| OEM-C86-9 | Ignition switch (IGSW) | digital_in | — | — | — | single_source | |
| OEM-C88-10 | Injector 1 (#10, cyl 1&4) | injector_out | T4-C1-9 | Injector 1 | injector_out | single_source | |
| OEM-C88-11 | A/T shift solenoid 1 (S1) | low_side_out | T4-C1-3 | PWM 3 | low_side_out | single_source | |
| OEM-C88-12 | Igniter feedback (IGF) | digital_in | — | — | — | single_source | |
| OEM-C88-13 | Starter signal (STA) | digital_in | — | — | — | single_source | |
| OEM-C88-14 | Neutral/park switch (NSW) | digital_in | — | — | — | single_source | |
| OEM-C88-15 | Ignition 3 (IGT3) | ignition_out | T4-C1-1 | Coil 3 | ignition_out | single_source | |
| OEM-C88-16 | Ignition 2 (IGT2) | ignition_out | T4-C1-18 | Coil 2 | ignition_out | single_source | |
| OEM-C88-17 | A/T shift solenoid 2 (S2) | low_side_out | T4-C3-23 | PWM 5 | low_side_out | single_source | |
| OEM-C88-19 | Voltage feedback (VF) | analog_out | — | — | — | single_source | |
| OEM-C88-20 | ISC stepper coil 4 (ISCV4) | low_side_out | T4-C3-10 | PWM 8 | low_side_out | single_source | |
| OEM-C88-21 | ISC stepper coil 3 (ISCV3) | low_side_out | T4-C3-25 | PWM 7 | low_side_out | single_source | |
| OEM-C88-22 | ISC stepper coil 2 (ISCV2) | low_side_out | T4-C3-24 | PWM 6 | low_side_out | single_source | |
| OEM-C88-23 | ISC stepper coil 1 (ISCV1) | low_side_out | T4-C3-22 | PWM 4 | low_side_out | single_source | |
| OEM-C88-24 | Ignition 1 (IGT1) | ignition_out | T4-C1-10 | Coil 1 | ignition_out | single_source | |
| OEM-C88-26 | Ignition 4 (IGT4) | ignition_out | T4-C1-26 | Coil 4 | ignition_out | single_source | |
| OEM-C88-27 | A/T lock-up solenoid (S3) | low_side_out | — | — | — | single_source | |
| OEM-C88-28 | Power ground (E11) | ground | T4-C1-13 + T4-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-C88-29 | Ignition 6 (IGT6) | ignition_out | — | — | — | single_source | |
| OEM-C88-3 | O2 heater (HT) | low_side_out | T4-C3-9 | Lambda 1 Heater Negative | low_side_out | single_source | |
| OEM-C88-30 | Ignition 5 (IGT5) | ignition_out | — | — | — | single_source | |
| OEM-C88-31 | TRAC throttle idle switch (IDL2) | digital_in | — | — | — | single_source | |
| OEM-C88-32 | TPS idle switch (IDL1) | digital_in | — | — | — | single_source | |
| OEM-C88-33 | Power ground (E02) | ground | T4-C1-13 + T4-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-C88-34 | Power ground (E01) | ground | T4-C1-13 + T4-C1-14 | Power Ground 1 + Power Ground 2 | ground | single_source | |
| OEM-C88-4 | Knock sensor 2 (KNK2, rear) | knock_in | — | — | — | single_source | |
| OEM-C88-5 | Knock sensor 1 (KNK1, front) | knock_in | — | — | — | single_source | |
| OEM-C88-7 | EVAP purge VSV | low_side_out | — | — | — | single_source | |
| OEM-C88-8 | Injector 3 (#30, cyl 2&6) | injector_out | T4-C1-34 | Injector 3 | injector_out | single_source | |
| OEM-C88-9 | Injector 2 (#20, cyl 3&5) | injector_out | T4-C1-17 | Injector 2 | injector_out | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-C86-22 | SP-14V-1 | 0.85 | no route | EFI main relay power (+B) | — | |
| W2 | OEM-C86-23 | SP-14V-1 | 0.85 | no route | EFI main relay power (+B1) | — | |
| W3 | SP-14V-1 | T4-C1-31 | 0.85 | no route | Ignition 12v In | — | |
| W4 | OEM-C86-14 | T4-C3-26 | 0.85 | no route | Battery constant (BATT) | — | |
| W5 | OEM-C85-16 | SP-GND-1 | 0.85 | no route | Power ground (E1) | — | |
| W6 | OEM-C88-28 | SP-GND-1 | 0.85 | no route | Power ground (E11) | — | |
| W7 | OEM-C88-33 | SP-GND-1 | 0.85 | no route | Power ground (E02) | — | |
| W8 | OEM-C88-34 | SP-GND-1 | 0.85 | no route | Power ground (E01) | — | |
| W9 | SP-GND-1 | T4-C1-13 | 0.85 | no route | Power Ground 1 | — | |
| W10 | SP-GND-1 | T4-C1-14 | 0.85 | no route | Power Ground 2 | — | |
| W11 | OEM-C84-11 | SP-0V-1 | 0.5 | no route | Cam 1 return (G1-) | — | |
| W12 | OEM-C84-17 | SP-0V-1 | 0.5 | no route | Cam 2 return (G2-) | — | |
| W13 | OEM-C84-22 | SP-0V-1 | 0.5 | no route | Sensor ground (E2) | — | |
| W14 | OEM-C84-6 | SP-0V-1 | 0.5 | no route | Crank sensor return (NE-) | — | |
| W15 | SP-0V-1 | T4-C2-21 | 0.5 | no route | Sensor Ground | — | |
| W16 | SP-0V-1 | T4-C2-33 | 0.5 | no route | Sensor Ground | — | |
| W17 | OEM-C84-1 | T4-C2-24 | 0.5 | no route | Sensor supply +5V (VCC) | — | |
| W18 | OEM-C84-5 | T4-C2-12 | 0.5 | no route | Crank position (NE) | — | |
| W19 | OEM-C84-10 | T4-C2-22 | 0.5 | no route | Cam position 1 (G1) | — | |
| W20 | OEM-C84-16 | T4-C2-2 | 0.5 | no route | Cam position 2 (G2) | — | |
| W21 | OEM-C88-24 | T4-C1-10 | 0.5 | no route | Ignition 1 (IGT1) | — | |
| W22 | OEM-C88-16 | T4-C1-18 | 0.5 | no route | Ignition 2 (IGT2) | — | |
| W23 | OEM-C88-15 | T4-C1-1 | 0.5 | no route | Ignition 3 (IGT3) | — | |
| W24 | OEM-C88-26 | T4-C1-26 | 0.5 | no route | Ignition 4 (IGT4) | — | |
| W25 | OEM-C88-10 | T4-C1-9 | 0.5 | no route | Injector 1 (#10, cyl 1&4) | — | |
| W26 | OEM-C88-9 | T4-C1-17 | 0.5 | no route | Injector 2 (#20, cyl 3&5) | — | |
| W27 | OEM-C88-8 | T4-C1-34 | 0.5 | no route | Injector 3 (#30, cyl 2&6) | — | |
| W28 | OEM-C84-8 | T4-C2-10 | 0.5 | no route | Manifold pressure (PIM) | — | |
| W29 | OEM-C84-7 | T4-C2-1 | 0.5 | no route | Throttle position (VTA1) | — | |
| W30 | OEM-C84-20 | T4-C2-7 | 0.5 | no route | Coolant temperature (THW) | — | |
| W31 | OEM-C85-2 | T4-C1-5 | 0.5 | no route | EFI main relay control (M-REL) | — | |
| W32 | OEM-C86-5 | T4-C1-4 | 0.5 | no route | A/C clutch relay (ACMG) | — | |
| W33 | OEM-C88-3 | T4-C3-9 | 0.5 | no route | O2 heater (HT) | — | |
| W34 | OEM-C88-11 | T4-C1-3 | 0.5 | no route | A/T shift solenoid 1 (S1) | — | |
| W35 | OEM-C88-23 | T4-C3-22 | 0.5 | no route | ISC stepper coil 1 (ISCV1) | — | |
| W36 | OEM-C88-17 | T4-C3-23 | 0.5 | no route | A/T shift solenoid 2 (S2) | — | |
| W37 | OEM-C88-22 | T4-C3-24 | 0.5 | no route | ISC stepper coil 2 (ISCV2) | — | |
| W38 | OEM-C88-21 | T4-C3-25 | 0.5 | no route | ISC stepper coil 3 (ISCV3) | — | |
| W39 | OEM-C88-20 | T4-C3-10 | 0.5 | no route | ISC stepper coil 4 (ISCV4) | — | |
| W40 | OEM-C85-3 | T4-C1-25 | 0.5 | no route | Check-engine lamp (W) | — | |
| W41 | OEM-C84-12 | T4-C2-5 | 0.5 | no route | TRAC throttle position (VTA2) | — | |
| W42 | OEM-C84-13 | T4-C2-6 | 0.5 | no route | O2 sensor (OX1) | — | |
| W43 | OEM-C84-14 | T4-C2-25 | 0.5 | no route | Intake air temperature (THA) | — | |
| W44 | OEM-C86-13 | T4-C2-17 | 0.5 | no route | Cat temperature sensor (CCO) | — | |
| W45 | OEM-C86-12 | T4-C2-4 | 0.5 | no route | No.1 speed sensor (SP1) | — | |
| W46 | OEM-C84-4 | T4-C2-14 | 0.5 | no route | No.2 speed sensor (SP2-) | — | |
| W47 | OEM-C84-9 | T4-C2-15 | 0.5 | no route | No.2 speed sensor (SP2+) | — | |
| W48 | OEM-C85-5 | T4-C2-19 | 0.5 | no route | Diagnostic test 1 (TE1) | — | |
| W49 | OEM-C86-7 | T4-C3-17 | 0.5 | no route | A/T overdrive disable 1 (OD1) | — | |
| W50 | OEM-C86-10 | T4-C3-18 | 0.5 | no route | A/T 2nd-gear indicator (2) | — | |
| W51 | OEM-C86-11 | T4-C2-34 | 0.5 | no route | Diagnostic test 2 (TE2) | — | |
| W52 | OEM-C86-6 | T4-C2-3 | 0.5 | no route | A/T overdrive disable 2 (OD2) | — | |
| W53 | OEM-C85-14 | T4-C2-16 | 0.5 | no route | ABS active (MT only) | — |
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 | INJECTOR_BALLAST | T4 | The 1JZ-GTE injectors (1JZ-GTE fuel injector) are low-impedance, but T4 drives saturated (high-Z) injectors only. Add a ballast resistor pack in series with each injector, or use an ECU with low-Z / peak-and-hold injector drivers. |
| error | PHYS_REQUIRED_OPEN | T4-C3-27 | T4-C3-27 "Permanent 12v" is required but not wired. |
| error | REQUIRED_UNMAPPED | OEM-C86-9 | Required OEM function "Ignition switch (IGSW)" (digital_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-C88-29 | Required OEM function "Ignition 6 (IGT6)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-C88-30 | Required OEM function "Ignition 5 (IGT5)" (ignition_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-C84-16 ↔ T4-C2-2 | OEM-C84-16 "Cam position 2 (G2)" [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. |
| warn | NET_FAMILY | OEM-C85-14 ↔ T4-C2-16 | OEM-C85-14 "ABS active (MT only)" [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-C85-5 ↔ T4-C2-19 | OEM-C85-5 "Diagnostic test 1 (TE1)" [digital_in] is wired to T4-C2-19 "Analogue 6" [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-C86-10 ↔ T4-C3-18 | OEM-C86-10 "A/T 2nd-gear indicator (2)" [digital_in] is wired to T4-C3-18 "Analogue 8" [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-C86-11 ↔ T4-C2-34 | OEM-C86-11 "Diagnostic test 2 (TE2)" [digital_in] is wired to T4-C2-34 "Analogue 9" [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-C86-6 ↔ T4-C2-3 | OEM-C86-6 "A/T overdrive disable 2 (OD2)" [digital_in] is wired to T4-C2-3 "Analogue 10" [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-C86-7 ↔ T4-C3-17 | OEM-C86-7 "A/T overdrive disable 1 (OD1)" [digital_in] is wired to T4-C3-17 "Analogue 7" [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 | NO_FUEL_PUMP | fuel pump | This engine harness has no fuel-pump control path: no fuel-pump relay output is wired to the new ECU. If the stock car switches the pump outside the ECU (an airflow-meter contact or a separate module), the standalone must drive the pump relay itself — see the install notes for this car. |
| info | NET_FAMILY | OEM-C85-3 ↔ T4-C1-25 | OEM-C85-3 "Check-engine lamp (W)" [low_side_out] is wired to T4-C1-25 "Injector 4" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 28 optional OEM pins are not mapped: OEM-C84-15 OD direct-clutch speed sensor (NCO+); OEM-C84-3 OD direct-clutch speed sensor (NCO-); OEM-C85-1 Slave engine speed (NEO); OEM-C85-10 Fuel pump diagnostic (DI); OEM-C85-11 Slave TRAC throttle position (VTO2); OEM-C85-4 Fuel pump control (FPC); OEM-C85-6 Timing retard (TR); OEM-C85-7 Slave throttle position (VTO1); OEM-C86-1 Diagnostic test terminal (TT); OEM-C86-17 A/T throttle position (L3); OEM-C86-18 A/T throttle position (L2); OEM-C86-19 A/T throttle position (L1); OEM-C86-2 A/T low-gear indicator (L); OEM-C86-20 A/C request (A/C); OEM-C86-25 Stop light switch (STP); OEM-C86-28 Electrical load sense (ELS); OEM-C86-3 A/T power/normal mode (P); OEM-C86-8 Cat temp warning light (EGW); OEM-C88-12 Igniter feedback (IGF); OEM-C88-13 Starter signal (STA); OEM-C88-14 Neutral/park switch (NSW); OEM-C88-19 Voltage feedback (VF); OEM-C88-27 A/T lock-up solenoid (S3); OEM-C88-31 TRAC throttle idle switch (IDL2); OEM-C88-32 TPS idle switch (IDL1); OEM-C88-4 Knock sensor 2 (KNK2, rear); OEM-C88-5 Knock sensor 1 (KNK1, front); OEM-C88-7 EVAP purge VSV |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Fit check: unconfirmed. Confirm these before building: - Trigger pattern for Toyota 1JZ-GTE not found in the ECU's docs (T-Win sensor table lists 2JZ/1UZ but omits 1JZ.) - No knock input; the stock knock sensor would be unused - Only 4 ignition outputs for 6 cylinders: wasted spark (pair coils per firing order) - Only 4 injector outputs for 6 injectors: batch / semi-sequential injection Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - OEM-C88 30: Ignition 5 (IGT5): no free ignition output on DTAFast T4 - OEM-C88 29: Ignition 6 (IGT6): no free ignition output on DTAFast T4 - OEM-C86 9: Ignition switch (IGSW): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); 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-C88 5: Knock sensor 1 (KNK1, front): no free knock input on DTAFast T4 - OEM-C88 4: Knock sensor 2 (KNK2, rear): no free knock input on DTAFast T4 - OEM-C85 4: Fuel pump control (FPC): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-C86 8: Cat temp warning light (EGW): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-C88 27: A/T lock-up solenoid (S3): no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-C88 7: EVAP purge VSV: no free low_side/relay_control/heater_low_side/ls_hs/injector on DTAFast T4 - OEM-C84 15: OD direct-clutch speed sensor (NCO+): no free frequency_in/switch_in on DTAFast T4 - OEM-C84 3: OD direct-clutch speed sensor (NCO-): no free frequency_in/switch_in on DTAFast T4 - OEM-C85 1: Slave engine speed (NEO): no free frequency_in/switch_in on DTAFast T4 - OEM-C85 10: Fuel pump diagnostic (DI): no free frequency_in/switch_in on DTAFast T4 - OEM-C88 12: Igniter feedback (IGF): no free frequency_in/switch_in on DTAFast T4 - OEM-C85 6: Timing retard (TR): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C86 1: Diagnostic test terminal (TT): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C86 17: A/T throttle position (L3): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C86 18: A/T throttle position (L2): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C86 19: A/T throttle position (L1): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C86 2: A/T low-gear indicator (L): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C86 20: A/C request (A/C): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C86 25: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C86 28: Electrical load sense (ELS): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C86 3: A/T power/normal mode (P): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C88 13: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C88 14: Neutral/park switch (NSW): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C88 31: TRAC throttle idle switch (IDL2): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C88 32: TPS idle switch (IDL1): no free switch_in/frequency_in/analog_0_5 on DTAFast T4 - OEM-C85 11: Slave TRAC throttle position (VTO2): no free analog_out on DTAFast T4 - OEM-C85 7: Slave throttle position (VTO1): no free analog_out on DTAFast T4 - OEM-C88 19: Voltage feedback (VF): no free analog_out 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 | — | — | — |
| 2 | community_copy | wilbo666: 1JZ-GTE pinout (JZZ30 Soarer page, shared 1JZ-GTE engine/ECU) | http://wilbo666.pbworks.com/w/page/47216384/1JZ-GTE%20JZZ30%20Soarer | — | — | — |