Lexus IS300 (XE10 / JCE10) 2001-05 2JZ-GE VVT-i → Motorsport Electronics ME221 (auto)
Lexus IS300 (XE10 / JCE10) 2001-05 2JZ-GE VVT-i — Motorsport Electronics — ME221
⚠ 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 | 5: read the Findings page before cutting any wire |
| Size of the job | 49 wires · 10 connectors · 0 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-E2-13 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-E3-16 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-E3-7 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-E3-8 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-14V-1 | ME221-C1-15 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | SP-14V-1 | ME221-C1-64 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-E6-17 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-E7-21 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | ME221-C1-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | ME221-C1-61 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | ME221-C1-89 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | ME221-C1-90 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-E6-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-E6-19 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-E7-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | ME221-C1-52 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | ME221-C1-84 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-E6-2 | ME221-C1-45 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-E7-23 | ME221-C1-80 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-E7-10 | ME221-C1-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-E7-28 | ME221-C1-53 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-E7-11 | ME221-C1-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-E7-12 | ME221-C1-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-E7-13 | ME221-C1-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-E6-5 | ME221-C1-63 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-E6-6 | ME221-C1-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-E7-1 | ME221-C1-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-E7-2 | ME221-C1-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-E7-3 | ME221-C1-63 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-E7-4 | ME221-C1-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-E7-17 | ME221-C1-73 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-E7-18 | ME221-C1-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-E7-19 | ME221-C1-74 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-E7-20 | ME221-C1-44 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-E6-15 | ME221-C1-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-E6-23 | ME221-C1-56 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-E6-16 | ME221-C1-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-E6-24 | ME221-C1-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-E6-14 | ME221-C1-86 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-E3-10 | ME221-C1-69 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-E3-4 | ME221-C1-39 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-E4-13 | ME221-C1-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-E2-25 | ME221-C1-37 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-E2-26 | ME221-C1-42 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-E6-3 | ME221-C1-72 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-E6-4 | ME221-C1-43 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-E6-22 | ME221-C1-57 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-E5-11 | ME221-C1-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-E5-5 | ME221-C1-7 | 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 | ME221-C1-15 | ME221-C1-10 | open (OL) | +12 V supply must not touch power ground | |
| 2 | ME221-C1-15 | ME221-C1-52 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | ME221-C1-10 | ME221-C1-45 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | ME221-C1-15 | ME221-C1-45 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 5 | ME221-C1-52 | ME221-C1-45 | open (OL) | sensor ground must not touch 5 V sensor reference |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
ME221-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | COIL 4 | — | — | — | — | — | — | — | — |
| 10 | GROUND CHASSIS | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 12 | LOW SIDE 2 | — | W32 | — | 0.5 | OEM-E7-18 | — | — | — |
| 14 | LSU +12V | — | — | — | — | — | — | — | — |
| 15 | IGN +12V | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| 16 | LSU HEATER -VE | — | W42 | — | 0.5 | OEM-E4-13 | — | — | — |
| 17 | ANA VOLT 3 | — | W37 | — | 0.5 | OEM-E6-16 | — | — | — |
| 18 | ANA VOLT 4 | — | W38 | — | 0.5 | OEM-E6-24 | — | — | — |
| 19 | LSU UN | — | — | — | — | — | — | — | — |
| 2 | COIL 3 | — | W24 | — | 0.5 | OEM-E7-13 | — | — | — |
| 20 | LSU VM | — | — | — | — | — | — | — | — |
| 21 | CAN 1 HIGH | — | — | — | — | — | — | — | — |
| 22 | CAM A VR+ | — | W20 | — | 0.5 | OEM-E7-10 | — | — | — |
| 23 | CAM A VR- | — | — | — | — | — | — | — | — |
| 24 | SERIAL 1 GROUND | — | — | — | — | — | — | — | — |
| 25 | SERIAL 1 TX | — | — | — | — | — | — | — | — |
| 26 | ANA VOLT 1 | — | W35 | — | 0.5 | OEM-E6-15 | — | — | — |
| 3 | INJECTOR 4 | — | W28 | — | 0.5 | OEM-E7-2 | — | — | — |
| 31 | COIL 2 | — | W23 | — | 0.5 | OEM-E7-12 | — | — | — |
| 32 | COIL 1 | — | W22 | — | 0.5 | OEM-E7-11 | — | — | — |
| 33 | INJECTOR 3 | — | W27 | — | 0.5 | OEM-E7-1 | — | — | — |
| 35 | USB D+ | — | — | — | — | — | — | — | — |
| 36 | USB D- | — | — | — | — | — | — | — | — |
| 37 | LOW SIDE RELAY 11 | — | W43 | — | 0.5 | OEM-E2-25 | — | — | — |
| 38 | USB VBUS | — | — | — | — | — | — | — | — |
| 39 | LOW SIDE 6 | — | W41 | — | 0.5 | OEM-E3-4 | — | — | — |
| 4 | INJECTOR 2 | — | W26 | — | 0.5 | OEM-E6-6 | — | — | — |
| 4 | INJECTOR 2 | — | W30 | — | 0.5 | OEM-E7-4 | — | — | — |
| 41 | USB GROUND | — | — | — | — | — | — | — | — |
| 42 | LOW SIDE RELAY 12 | — | W44 | — | 0.5 | OEM-E2-26 | — | — | — |
| 43 | LOW SIDE RELAY 14 | — | W46 | — | 0.5 | OEM-E6-4 | — | — | — |
| 44 | LOW SIDE 4 | — | W34 | — | 0.5 | OEM-E7-20 | — | — | — |
| 45 | 5V REF | — | W18 | — | 0.5 | OEM-E6-2 | — | — | — |
| 46 | 5V REF | — | — | — | — | — | — | — | — |
| 49 | LSU IA | — | — | — | — | — | — | — | — |
| 50 | LSU IP | — | — | — | — | — | — | — | — |
| 51 | CAN 1 LOW | — | — | — | — | — | — | — | — |
| 52 | SENSORS GROUND | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 53 | KNOCK 1 SIGNAL | — | W21 | — | 0.5 | OEM-E7-28 | — | — | — |
| 55 | SERIAL 1 RX | — | — | — | — | — | — | — | — |
| 56 | ANA VOLT 2 | — | W36 | — | 0.5 | OEM-E6-23 | — | — | — |
| 57 | ANA TEMP 2 | — | W47 | — | 0.5 | OEM-E6-22 | — | — | — |
| 6 | DIG_IN 1 | — | W48 | — | 0.5 | OEM-E5-11 | — | — | — |
| 61 | GROUND | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 63 | INJECTOR 1 | — | W25 | — | 0.5 | OEM-E6-5 | — | — | — |
| 63 | INJECTOR 1 | — | W29 | — | 0.5 | OEM-E7-3 | — | — | — |
| 64 | VBAT | — | W6 | — | 0.85 | SP-14V-1 | — | — | — |
| 67 | Stepper 1 / A1 | — | — | — | — | — | — | — | — |
| 68 | Stepper 2 / A2 | — | — | — | — | — | — | — | — |
| 69 | LOW SIDE 5 | — | W40 | — | 0.5 | OEM-E3-10 | — | — | — |
| 7 | DIG_IN 2 | — | W49 | — | 0.5 | OEM-E5-5 | — | — | — |
| 70 | Stepper 3 / B1 | — | — | — | — | — | — | — | — |
| 71 | Stepper 4 / B2 | — | — | — | — | — | — | — | — |
| 72 | LOW SIDE RELAY 13 | — | W45 | — | 0.5 | OEM-E6-3 | — | — | — |
| 73 | LOW SIDE 1 | — | W31 | — | 0.5 | OEM-E7-17 | — | — | — |
| 74 | LOW SIDE 3 | — | W33 | — | 0.5 | OEM-E7-19 | — | — | — |
| 76 | 5V REF | — | — | — | — | — | — | — | — |
| 79 | TACHOMETER | — | — | — | — | — | — | — | — |
| 80 | CRANK VR+ | — | W19 | — | 0.5 | OEM-E7-23 | — | — | — |
| 81 | CRANK VR- | — | — | — | — | — | — | — | — |
| 84 | Sensor Ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 86 | ANA TEMP 1 | — | W39 | — | 0.5 | OEM-E6-14 | — | — | — |
| 89 | GROUND | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 90 | GROUND | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
OEM-E2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 13 | ETCS power (TBP, throttle bypass) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 24 | O2 right rear (OXR2) | — | — | — | — | — | — | — | — |
| 25 | O2 heater right rear (HTR2) | — | W43 | — | 0.5 | ME221-C1-37 | — | — | — |
| 26 | O2 heater left rear (HTL2) | — | W44 | — | 0.5 | ME221-C1-42 | — | — | — |
OEM-E3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Battery constant (BATT) | — | — | — | — | — | — | — | — |
| 10 | EFI main relay control (MREL) | — | W40 | — | 0.5 | ME221-C1-69 | — | — | — |
| 11 | Serial diagnostic (SIL) | — | — | — | — | — | — | — | — |
| 16 | EFI main relay (+B) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Fuel pump relay (FPR) | — | W41 | — | 0.5 | ME221-C1-39 | — | — | — |
| 5 | Fuel pump control (FC) | — | — | — | — | — | — | — | — |
| 6 | Check-engine lamp (W) | — | — | — | — | — | — | — | — |
| 7 | ETCS main relay (+BM) | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 8 | EFI main relay (+B2) | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 9 | Ignition switch (IGSW) | — | — | — | — | — | — | — | — |
OEM-E4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 13 | A/C clutch relay (ACMG) | — | W42 | — | 0.5 | ME221-C1-16 | — | — | — |
| 18 | EVAP vapor pressure (PTNK) | — | — | — | — | — | — | — | — |
| 2 | Starter signal (STA) | — | — | — | — | — | — | — | — |
| 5 | Diagnostic/timing check (TC) | — | — | — | — | — | — | — | — |
| 6 | Stop light switch (STP) | — | — | — | — | — | — | — | — |
| 8 | O2 left rear (OXL2) | — | — | — | — | — | — | — | — |
OEM-E5
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 11 | Vehicle speed sensor (SP2-) | — | W48 | — | 0.5 | ME221-C1-6 | — | — | — |
| 12 | Canister close valve (CCV) | — | — | — | — | — | — | — | — |
| 5 | Vehicle speed sensor (SP2+) | — | W49 | — | 0.5 | ME221-C1-7 | — | — | — |
OEM-E6
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Mass air flow (VG) | — | — | — | — | — | — | — | — |
| 11 | O2 right front (OXR1) | — | — | — | — | — | — | — | — |
| 12 | O2 left front (OXL1) | — | — | — | — | — | — | — | — |
| 14 | Coolant temperature (THW) | — | W39 | — | 0.5 | ME221-C1-86 | — | — | — |
| 15 | Accelerator pedal 1 (VPA) | — | W35 | — | 0.5 | ME221-C1-26 | — | — | — |
| 16 | Accelerator pedal 2 (VPA2) | — | W37 | — | 0.5 | ME221-C1-17 | — | — | — |
| 17 | Power ground (E1) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 18 | Sensor ground (E2) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | MAF ground (EVG) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Sensor supply +5V (VC) | — | W18 | — | 0.5 | ME221-C1-45 | — | — | — |
| 22 | Intake air temperature (THA) | — | W47 | — | 0.5 | ME221-C1-57 | — | — | — |
| 23 | Throttle position 1 (VTA) | — | W36 | — | 0.5 | ME221-C1-56 | — | — | — |
| 24 | Throttle position 2 (VTA2) | — | W38 | — | 0.5 | ME221-C1-18 | — | — | — |
| 3 | O2 heater right front (HTR) | — | W45 | — | 0.5 | ME221-C1-72 | — | — | — |
| 4 | O2 heater left front (HTL) | — | W46 | — | 0.5 | ME221-C1-43 | — | — | — |
| 5 | Injector 1 (#10) | — | W25 | — | 0.5 | ME221-C1-63 | — | — | — |
| 6 | Injector 2 (#20) | — | W26 | — | 0.5 | ME221-C1-4 | — | — | — |
| 7 | EVAP purge VSV (PRG) | — | — | — | — | — | — | — | — |
OEM-E7
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 3 (#30) | — | W27 | — | 0.5 | ME221-C1-33 | — | — | — |
| 10 | Cam position (G2) | — | W20 | — | 0.5 | ME221-C1-22 | — | — | — |
| 11 | Ignition 1 (IGT) | — | W22 | — | 0.5 | ME221-C1-32 | — | — | — |
| 12 | Ignition 2 (IGT2) | — | W23 | — | 0.5 | ME221-C1-31 | — | — | — |
| 13 | Ignition 3 (IGT3) | — | W24 | — | 0.5 | ME221-C1-2 | — | — | — |
| 17 | VVT-i OCV - (OCV-) | — | W31 | — | 0.5 | ME221-C1-73 | — | — | — |
| 18 | VVT-i OCV + (OCV+) | — | W32 | — | 0.5 | ME221-C1-12 | — | — | — |
| 19 | ETCS throttle clutch - (CL-) | — | W33 | — | 0.5 | ME221-C1-74 | — | — | — |
| 2 | Injector 4 (#40) | — | W28 | — | 0.5 | ME221-C1-3 | — | — | — |
| 20 | ETCS throttle clutch + (CL+) | — | W34 | — | 0.5 | ME221-C1-44 | — | — | — |
| 21 | Power ground (E01) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 22 | Crank position return (NE-) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 23 | Crank position (NE) | — | W19 | — | 0.5 | ME221-C1-80 | — | — | — |
| 25 | Igniter feedback (IGF) | — | — | — | — | — | — | — | — |
| 27 | Knock sensor 2 (KNK2) | — | — | — | — | — | — | — | — |
| 28 | Knock sensor 1 (KNK1) | — | W21 | — | 0.5 | ME221-C1-53 | — | — | — |
| 3 | Injector 5 (#50) | — | W29 | — | 0.5 | ME221-C1-63 | — | — | — |
| 4 | Injector 6 (#60) | — | W30 | — | 0.5 | ME221-C1-4 | — | — | — |
| 5 | ACIS intake VSV | — | — | — | — | — | — | — | — |
| 7 | ETCS throttle motor - (M-) | — | — | — | — | — | — | — | — |
| 8 | ETCS throttle motor + (M+) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-E6-18 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-E6-19 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-E7-22 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | ME221-C1-52 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | ME221-C1-84 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-E2-13 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-E3-16 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | OEM-E3-7 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | OEM-E3-8 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | ME221-C1-15 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | ME221-C1-64 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W7 | — | 0.85 | OEM-E6-17 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-E7-21 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | ME221-C1-10 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | ME221-C1-61 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | ME221-C1-89 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | ME221-C1-90 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-E2-13 | ETCS power (TBP, throttle bypass) | power_in | ME221-C1-15 + ME221-C1-64 | IGN +12V + VBAT | power_in | single_source | |
| OEM-E2-24 | O2 right rear (OXR2) | lambda_nb_in | — | — | — | single_source | |
| OEM-E2-25 | O2 heater right rear (HTR2) | low_side_out | ME221-C1-37 | LOW SIDE RELAY 11 | low_side_out | single_source | |
| OEM-E2-26 | O2 heater left rear (HTL2) | low_side_out | ME221-C1-42 | LOW SIDE RELAY 12 | low_side_out | single_source | |
| OEM-E3-1 | Battery constant (BATT) | power_in | — | — | — | single_source | |
| OEM-E3-10 | EFI main relay control (MREL) | low_side_out | ME221-C1-69 | LOW SIDE 5 | low_side_out | single_source | |
| OEM-E3-11 | Serial diagnostic (SIL) | serial | — | — | — | single_source | |
| OEM-E3-16 | EFI main relay (+B) | power_in | ME221-C1-15 + ME221-C1-64 | IGN +12V + VBAT | power_in | single_source | |
| OEM-E3-4 | Fuel pump relay (FPR) | low_side_out | ME221-C1-39 | LOW SIDE 6 | low_side_out | single_source | |
| OEM-E3-5 | Fuel pump control (FC) | low_side_out | — | — | — | single_source | |
| OEM-E3-6 | Check-engine lamp (W) | low_side_out | — | — | — | single_source | |
| OEM-E3-7 | ETCS main relay (+BM) | power_in | ME221-C1-15 + ME221-C1-64 | IGN +12V + VBAT | power_in | single_source | |
| OEM-E3-8 | EFI main relay (+B2) | power_in | ME221-C1-15 + ME221-C1-64 | IGN +12V + VBAT | power_in | single_source | |
| OEM-E3-9 | Ignition switch (IGSW) | digital_in | — | — | — | single_source | |
| OEM-E4-13 | A/C clutch relay (ACMG) | low_side_out | ME221-C1-16 | LSU HEATER -VE | low_side_out | single_source | |
| OEM-E4-18 | EVAP vapor pressure (PTNK) | analog_in | — | — | — | single_source | |
| OEM-E4-2 | Starter signal (STA) | digital_in | — | — | — | single_source | |
| OEM-E4-5 | Diagnostic/timing check (TC) | digital_in | — | — | — | single_source | |
| OEM-E4-6 | Stop light switch (STP) | digital_in | — | — | — | single_source | |
| OEM-E4-8 | O2 left rear (OXL2) | lambda_nb_in | — | — | — | single_source | |
| OEM-E5-11 | Vehicle speed sensor (SP2-) | digital_in | ME221-C1-6 | DIG_IN 1 | digital_in | single_source | |
| OEM-E5-12 | Canister close valve (CCV) | low_side_out | — | — | — | single_source | |
| OEM-E5-5 | Vehicle speed sensor (SP2+) | digital_in | ME221-C1-7 | DIG_IN 2 | digital_in | single_source | |
| OEM-E6-10 | Mass air flow (VG) | analog_in | — | — | — | single_source | |
| OEM-E6-11 | O2 right front (OXR1) | lambda_nb_in | — | — | — | single_source | |
| OEM-E6-12 | O2 left front (OXL1) | lambda_nb_in | — | — | — | single_source | |
| OEM-E6-14 | Coolant temperature (THW) | temp_in | ME221-C1-86 | ANA TEMP 1 | temp_in | single_source | |
| OEM-E6-15 | Accelerator pedal 1 (VPA) | analog_in | ME221-C1-26 | ANA VOLT 1 | analog_in | single_source | |
| OEM-E6-16 | Accelerator pedal 2 (VPA2) | analog_in | ME221-C1-17 | ANA VOLT 3 | analog_in | single_source | |
| OEM-E6-17 | Power ground (E1) | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | single_source | |
| OEM-E6-18 | Sensor ground (E2) | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | single_source | |
| OEM-E6-19 | MAF ground (EVG) | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | single_source | |
| OEM-E6-2 | Sensor supply +5V (VC) | vref | ME221-C1-45 | 5V REF | vref | single_source | |
| OEM-E6-22 | Intake air temperature (THA) | temp_in | ME221-C1-57 | ANA TEMP 2 | temp_in | single_source | |
| OEM-E6-23 | Throttle position 1 (VTA) | analog_in | ME221-C1-56 | ANA VOLT 2 | analog_in | single_source | |
| OEM-E6-24 | Throttle position 2 (VTA2) | analog_in | ME221-C1-18 | ANA VOLT 4 | analog_in | single_source | |
| OEM-E6-3 | O2 heater right front (HTR) | low_side_out | ME221-C1-72 | LOW SIDE RELAY 13 | low_side_out | single_source | |
| OEM-E6-4 | O2 heater left front (HTL) | low_side_out | ME221-C1-43 | LOW SIDE RELAY 14 | low_side_out | single_source | |
| OEM-E6-5 | Injector 1 (#10) | injector_out | ME221-C1-63 | INJECTOR 1 | injector_out | single_source | |
| OEM-E6-6 | Injector 2 (#20) | injector_out | ME221-C1-4 | INJECTOR 2 | injector_out | single_source | |
| OEM-E6-7 | EVAP purge VSV (PRG) | low_side_out | — | — | — | single_source | |
| OEM-E7-1 | Injector 3 (#30) | injector_out | ME221-C1-33 | INJECTOR 3 | injector_out | single_source | |
| OEM-E7-10 | Cam position (G2) | trigger_in | ME221-C1-22 | CAM A VR+ | trigger_in | single_source | |
| OEM-E7-11 | Ignition 1 (IGT) | ignition_out | ME221-C1-32 | COIL 1 | ignition_out | single_source | |
| OEM-E7-12 | Ignition 2 (IGT2) | ignition_out | ME221-C1-31 | COIL 2 | ignition_out | single_source | |
| OEM-E7-13 | Ignition 3 (IGT3) | ignition_out | ME221-C1-2 | COIL 3 | ignition_out | single_source | |
| OEM-E7-17 | VVT-i OCV - (OCV-) | low_side_out | ME221-C1-73 | LOW SIDE 1 | low_side_out | single_source | |
| OEM-E7-18 | VVT-i OCV + (OCV+) | low_side_out | ME221-C1-12 | LOW SIDE 2 | low_side_out | single_source | |
| OEM-E7-19 | ETCS throttle clutch - (CL-) | low_side_out | ME221-C1-74 | LOW SIDE 3 | low_side_out | single_source | |
| OEM-E7-2 | Injector 4 (#40) | injector_out | ME221-C1-3 | INJECTOR 4 | injector_out | single_source | |
| OEM-E7-20 | ETCS throttle clutch + (CL+) | low_side_out | ME221-C1-44 | LOW SIDE 4 | low_side_out | single_source | |
| OEM-E7-21 | Power ground (E01) | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | single_source | |
| OEM-E7-22 | Crank position return (NE-) | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | single_source | |
| OEM-E7-23 | Crank position (NE) | trigger_in | ME221-C1-80 | CRANK VR+ | trigger_in | single_source | |
| OEM-E7-25 | Igniter feedback (IGF) | digital_in | — | — | — | single_source | |
| OEM-E7-27 | Knock sensor 2 (KNK2) | knock_in | — | — | — | single_source | |
| OEM-E7-28 | Knock sensor 1 (KNK1) | knock_in | ME221-C1-53 | KNOCK 1 SIGNAL | knock_in | single_source | |
| OEM-E7-3 | Injector 5 (#50) | injector_out | ME221-C1-63 | INJECTOR 1 | injector_out | single_source | |
| OEM-E7-4 | Injector 6 (#60) | injector_out | ME221-C1-4 | INJECTOR 2 | injector_out | single_source | |
| OEM-E7-5 | ACIS intake VSV | low_side_out | — | — | — | single_source | |
| OEM-E7-7 | ETCS throttle motor - (M-) | hbridge_out | — | — | — | single_source | |
| OEM-E7-8 | ETCS throttle motor + (M+) | hbridge_out | — | — | — | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-E2-13 | SP-14V-1 | 0.85 | no route | ETCS power (TBP, throttle bypass) | — | |
| W2 | OEM-E3-16 | SP-14V-1 | 0.85 | no route | EFI main relay (+B) | — | |
| W3 | OEM-E3-7 | SP-14V-1 | 0.85 | no route | ETCS main relay (+BM) | — | |
| W4 | OEM-E3-8 | SP-14V-1 | 0.85 | no route | EFI main relay (+B2) | — | |
| W5 | SP-14V-1 | ME221-C1-15 | 0.85 | no route | IGN +12V | — | |
| W6 | SP-14V-1 | ME221-C1-64 | 0.85 | no route | VBAT | — | |
| W7 | OEM-E6-17 | SP-GND-1 | 0.85 | no route | Power ground (E1) | — | |
| W8 | OEM-E7-21 | SP-GND-1 | 0.85 | no route | Power ground (E01) | — | |
| W9 | SP-GND-1 | ME221-C1-10 | 0.85 | no route | GROUND CHASSIS | — | |
| W10 | SP-GND-1 | ME221-C1-61 | 0.85 | no route | GROUND | — | |
| W11 | SP-GND-1 | ME221-C1-89 | 0.85 | no route | GROUND | — | |
| W12 | SP-GND-1 | ME221-C1-90 | 0.85 | no route | GROUND | — | |
| W13 | OEM-E6-18 | SP-0V-1 | 0.5 | no route | Sensor ground (E2) | — | |
| W14 | OEM-E6-19 | SP-0V-1 | 0.5 | no route | MAF ground (EVG) | — | |
| W15 | OEM-E7-22 | SP-0V-1 | 0.5 | no route | Crank position return (NE-) | — | |
| W16 | SP-0V-1 | ME221-C1-52 | 0.5 | no route | SENSORS GROUND | — | |
| W17 | SP-0V-1 | ME221-C1-84 | 0.5 | no route | Sensor Ground | — | |
| W18 | OEM-E6-2 | ME221-C1-45 | 0.5 | no route | Sensor supply +5V (VC) | — | |
| W19 | OEM-E7-23 | ME221-C1-80 | 0.5 | no route | Crank position (NE) | — | |
| W20 | OEM-E7-10 | ME221-C1-22 | 0.5 | no route | Cam position (G2) | — | |
| W21 | OEM-E7-28 | ME221-C1-53 | 0.5 | no route | Knock sensor 1 (KNK1) | — | |
| W22 | OEM-E7-11 | ME221-C1-32 | 0.5 | no route | Ignition 1 (IGT) | — | |
| W23 | OEM-E7-12 | ME221-C1-31 | 0.5 | no route | Ignition 2 (IGT2) | — | |
| W24 | OEM-E7-13 | ME221-C1-2 | 0.5 | no route | Ignition 3 (IGT3) | — | |
| W25 | OEM-E6-5 | ME221-C1-63 | 0.5 | no route | Injector 1 (#10) | — | |
| W26 | OEM-E6-6 | ME221-C1-4 | 0.5 | no route | Injector 2 (#20) | — | |
| W27 | OEM-E7-1 | ME221-C1-33 | 0.5 | no route | Injector 3 (#30) | — | |
| W28 | OEM-E7-2 | ME221-C1-3 | 0.5 | no route | Injector 4 (#40) | — | |
| W29 | OEM-E7-3 | ME221-C1-63 | 0.5 | no route | Injector 5 (#50) | — | |
| W30 | OEM-E7-4 | ME221-C1-4 | 0.5 | no route | Injector 6 (#60) | — | |
| W31 | OEM-E7-17 | ME221-C1-73 | 0.5 | no route | VVT-i OCV - (OCV-) | — | |
| W32 | OEM-E7-18 | ME221-C1-12 | 0.5 | no route | VVT-i OCV + (OCV+) | — | |
| W33 | OEM-E7-19 | ME221-C1-74 | 0.5 | no route | ETCS throttle clutch - (CL-) | — | |
| W34 | OEM-E7-20 | ME221-C1-44 | 0.5 | no route | ETCS throttle clutch + (CL+) | — | |
| W35 | OEM-E6-15 | ME221-C1-26 | 0.5 | no route | Accelerator pedal 1 (VPA) | — | |
| W36 | OEM-E6-23 | ME221-C1-56 | 0.5 | no route | Throttle position 1 (VTA) | — | |
| W37 | OEM-E6-16 | ME221-C1-17 | 0.5 | no route | Accelerator pedal 2 (VPA2) | — | |
| W38 | OEM-E6-24 | ME221-C1-18 | 0.5 | no route | Throttle position 2 (VTA2) | — | |
| W39 | OEM-E6-14 | ME221-C1-86 | 0.5 | no route | Coolant temperature (THW) | — | |
| W40 | OEM-E3-10 | ME221-C1-69 | 0.5 | no route | EFI main relay control (MREL) | — | |
| W41 | OEM-E3-4 | ME221-C1-39 | 0.5 | no route | Fuel pump relay (FPR) | — | |
| W42 | OEM-E4-13 | ME221-C1-16 | 0.5 | no route | A/C clutch relay (ACMG) | — | |
| W43 | OEM-E2-25 | ME221-C1-37 | 0.5 | no route | O2 heater right rear (HTR2) | — | |
| W44 | OEM-E2-26 | ME221-C1-42 | 0.5 | no route | O2 heater left rear (HTL2) | — | |
| W45 | OEM-E6-3 | ME221-C1-72 | 0.5 | no route | O2 heater right front (HTR) | — | |
| W46 | OEM-E6-4 | ME221-C1-43 | 0.5 | no route | O2 heater left front (HTL) | — | |
| W47 | OEM-E6-22 | ME221-C1-57 | 0.5 | no route | Intake air temperature (THA) | — | |
| W48 | OEM-E5-11 | ME221-C1-6 | 0.5 | no route | Vehicle speed sensor (SP2-) | — | |
| W49 | OEM-E5-5 | ME221-C1-7 | 0.5 | no route | Vehicle speed sensor (SP2+) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (7)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | NET_MERGED | ME221-C1-4 + OEM-E6-6 + OEM-E7-4 | 2 different OEM functions share one net: OEM-E6-6 Injector 2 (#20); OEM-E7-4 Injector 6 (#60) |
| error | NET_MERGED | ME221-C1-63 + OEM-E6-5 + OEM-E7-3 | 2 different OEM functions share one net: OEM-E6-5 Injector 1 (#10); OEM-E7-3 Injector 5 (#50) |
| error | REQUIRED_UNMAPPED | OEM-E3-9 | Required OEM function "Ignition switch (IGSW)" (digital_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E7-7 | Required OEM function "ETCS throttle motor - (M-)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E7-8 | Required OEM function "ETCS throttle motor + (M+)" (hbridge_out) is not connected to the new ECU. |
| warn | LOAD_UNKNOWN | ME221-C1-16 | ME221-C1-16 "LSU HEATER -VE" drives OEM-E4-13 A/C clutch relay (ACMG) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | UNMAPPED | OEM | 17 optional OEM pins are not mapped: OEM-E2-24 O2 right rear (OXR2); OEM-E3-11 Serial diagnostic (SIL); OEM-E3-5 Fuel pump control (FC); OEM-E3-6 Check-engine lamp (W); OEM-E4-18 EVAP vapor pressure (PTNK); OEM-E4-2 Starter signal (STA); OEM-E4-5 Diagnostic/timing check (TC); OEM-E4-6 Stop light switch (STP); OEM-E4-8 O2 left rear (OXL2); OEM-E5-12 Canister close valve (CCV); OEM-E6-10 Mass air flow (VG); OEM-E6-11 O2 right front (OXR1); OEM-E6-12 O2 left front (OXL1); OEM-E6-7 EVAP purge VSV (PRG); OEM-E7-25 Igniter feedback (IGF); OEM-E7-27 Knock sensor 2 (KNK2); OEM-E7-5 ACIS intake VSV |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-E3-1 | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
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 Toyota 2JZ not found in the ECU's docs (Trigger-pattern list is only inside MEITE software, not published online) - 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-E3 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); Motorsport Electronics ME221 has no dedicated key-on input - OEM-E7 7: ETCS throttle motor - (M-): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-E7 8: ETCS throttle motor + (M+): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand Not wired: - OEM-E3 1: Battery constant (BATT): Motorsport Electronics ME221 has no battery-constant input; not needed - OEM-E7 27: Knock sensor 2 (KNK2): no free knock input on Motorsport Electronics ME221 - OEM-E3 5: Fuel pump control (FC): no free low_side/relay_control/heater_low_side/ls_hs/injector on Motorsport Electronics ME221 - OEM-E3 6: Check-engine lamp (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on Motorsport Electronics ME221 - OEM-E5 12: Canister close valve (CCV): no free low_side/relay_control/heater_low_side/ls_hs/injector on Motorsport Electronics ME221 - OEM-E6 7: EVAP purge VSV (PRG): no free low_side/relay_control/heater_low_side/ls_hs/injector on Motorsport Electronics ME221 - OEM-E7 5: ACIS intake VSV: no free low_side/relay_control/heater_low_side/ls_hs/injector on Motorsport Electronics ME221 - OEM-E6 10: Mass air flow (VG): no free maf/analog_0_5 on Motorsport Electronics ME221 - OEM-E2 24: O2 right rear (OXR2): no free o2_narrowband/analog_0_5 on Motorsport Electronics ME221 - OEM-E4 8: O2 left rear (OXL2): no free o2_narrowband/analog_0_5 on Motorsport Electronics ME221 - OEM-E6 11: O2 right front (OXR1): no free o2_narrowband/analog_0_5 on Motorsport Electronics ME221 - OEM-E6 12: O2 left front (OXL1): no free o2_narrowband/analog_0_5 on Motorsport Electronics ME221 - OEM-E4 18: EVAP vapor pressure (PTNK): no free analog_0_5 on Motorsport Electronics ME221 - OEM-E7 25: Igniter feedback (IGF): no free frequency_in/switch_in on Motorsport Electronics ME221 - OEM-E4 2: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME221 - OEM-E4 5: Diagnostic/timing check (TC): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME221 - OEM-E4 6: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on Motorsport Electronics ME221 - OEM-E3 11: Serial diagnostic (SIL): no free k_line on Motorsport Electronics ME221
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Motorsport Electronics GEN2 ME221/ME360/ME442 wire-in pinout | https://motorsport-electronics.co.uk/onlinehelp/html/ME442ME360ME221GEN2Wire-InPinout.html | — | — | — |
| 4 | service_manual | Toyota FSM RM779U (2001 Lexus IS300) — DIAGNOSTICS 'TERMINALS OF ECM' (DI-20/21) | http://www.2jzgarage.com/wp-content/uploads/2013/04/2001_IS300_ECU_Pinouts.pdf | — | — | — |