MX-5 Miata NB2 2001-05 (BP-Z3, VVT) → Link G4X MonsoonX (auto)
MX-5 Miata NB2 2001-05 (BP-Z3, VVT) — Link — G4X MonsoonX
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-08
Before you start
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 35 wires · 7 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-2-P | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | G4XMONSOONX-A-A5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-3-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-3-B | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-4-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | G4XMONSOONX-A-A25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | G4XMONSOONX-A-A34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-4-O | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-0V-1 | G4XMONSOONX-A-A24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-4-L | G4XMONSOONX-A-A32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-3-Y | G4XMONSOONX-A-A8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-3-V | G4XMONSOONX-A-A9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-4-M | G4XMONSOONX-A-A6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-3-F | G4XMONSOONX-A-A13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-3-I | G4XMONSOONX-A-A12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-2-A | G4XMONSOONX-A-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-2-D | G4XMONSOONX-A-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-2-G | G4XMONSOONX-A-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-2-J | G4XMONSOONX-A-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-2-B | G4XMONSOONX-A-A21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-2-C | G4XMONSOONX-A-A20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-2-K | G4XMONSOONX-A-A19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-2-M | G4XMONSOONX-A-A18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-3-H | G4XMONSOONX-A-A27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-3-J | G4XMONSOONX-A-A26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-4-X | G4XMONSOONX-A-A17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-4-V | G4XMONSOONX-A-A22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-4-AA | G4XMONSOONX-A-A33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-4-W | G4XMONSOONX-A-A14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-4-P | G4XMONSOONX-A-A15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-4-N | G4XMONSOONX-A-A16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-3-T | G4XMONSOONX-A-A30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-3-S | G4XMONSOONX-A-A31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-4-B | G4XMONSOONX-A-A23 | 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 | G4XMONSOONX-A-A32 | G4XMONSOONX-A-A24 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 2 | G4XMONSOONX-A-A5 | G4XMONSOONX-A-A24 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | G4XMONSOONX-A-A5 | G4XMONSOONX-A-A25 | open (OL) | +12 V supply must not touch power ground | |
| 4 | G4XMONSOONX-A-A25 | G4XMONSOONX-A-A32 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | G4XMONSOONX-A-A5 | G4XMONSOONX-A-A32 | open (OL) | +12 V supply must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
G4XMONSOONX-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | Injector 4 | — | W20 | — | 0.5 | OEM-2-J | — | — | — |
| A10 | Ignition 4 | — | — | — | — | — | — | — | — |
| A11 | Ignition 3 | — | — | — | — | — | — | — | — |
| A12 | Ignition 2 | — | W16 | — | 0.5 | OEM-3-I | — | — | — |
| A13 | Ignition 1 | — | W15 | — | 0.5 | OEM-3-F | — | — | — |
| A14 | Analog Volt 4 | — | W30 | — | 0.5 | OEM-4-W | — | — | — |
| A15 | Analog Temp 1 | — | W31 | — | 0.5 | OEM-4-P | — | — | — |
| A16 | Analog Temp 2 | — | W32 | — | 0.5 | OEM-4-N | — | — | — |
| A17 | Analog Volt 1 | — | W27 | — | 0.5 | OEM-4-X | — | — | — |
| A18 | Aux 4 | — | W24 | — | 0.5 | OEM-2-M | — | — | — |
| A19 | Aux 3 | — | W23 | — | 0.5 | OEM-2-K | — | — | — |
| A2 | Injector 3 | — | W19 | — | 0.5 | OEM-2-G | — | — | — |
| A20 | Aux 2 | — | W22 | — | 0.5 | OEM-2-C | — | — | — |
| A21 | Aux 1 | — | W21 | — | 0.5 | OEM-2-B | — | — | — |
| A22 | Analog Volt 2 | — | W28 | — | 0.5 | OEM-4-V | — | — | — |
| A23 | Digital Input 3 | — | W35 | — | 0.5 | OEM-4-B | — | — | — |
| A24 | Sensor Ground | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| A25 | System Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| A26 | Aux 6 | — | W26 | — | 0.5 | OEM-3-J | — | — | — |
| A27 | Aux 5 | — | W25 | — | 0.5 | OEM-3-H | — | — | — |
| A28 | CAN H | — | — | — | — | — | — | — | — |
| A29 | CAN L | — | — | — | — | — | — | — | — |
| A3 | Injector 2 | — | W18 | — | 0.5 | OEM-2-D | — | — | — |
| A30 | Digital Input 1 | — | W33 | — | 0.5 | OEM-3-T | — | — | — |
| A31 | Digital Input 2 | — | W34 | — | 0.5 | OEM-3-S | — | — | — |
| A32 | +5V Out | — | W11 | — | 0.5 | OEM-4-L | — | — | — |
| A33 | Analog Volt 3 | — | W29 | — | 0.5 | OEM-4-AA | — | — | — |
| A34 | System Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| A4 | Injector 1 | — | W17 | — | 0.5 | OEM-2-A | — | — | — |
| A5 | +14V ECU Power | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| A6 | Knock 1 / Digital Input 4 | — | W14 | — | 0.5 | OEM-4-M | — | — | — |
| A7 | Shield Ground | — | — | — | — | — | — | — | — |
| A8 | Trigger 1 | — | W12 | — | 0.5 | OEM-3-Y | — | — | — |
| A9 | Trigger 2 | — | W13 | — | 0.5 | OEM-3-V | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Injector 1 | — | W17 | — | 0.5 | G4XMONSOONX-A-A4 | — | — | — |
| B | Cooling fan relay | — | W21 | — | 0.5 | G4XMONSOONX-A-A21 | — | — | — |
| C | Condenser fan relay | — | W22 | — | 0.5 | G4XMONSOONX-A-A20 | — | — | — |
| D | Injector 2 | — | W18 | — | 0.5 | G4XMONSOONX-A-A3 | — | — | — |
| E | EGR valve | — | — | — | — | — | — | — | — |
| F | EGR valve | — | — | — | — | — | — | — | — |
| G | Injector 3 | — | W19 | — | 0.5 | G4XMONSOONX-A-A2 | — | — | — |
| H | EGR valve | — | — | — | — | — | — | — | — |
| I | EGR valve | — | — | — | — | — | — | — | — |
| J | Injector 4 | — | W20 | — | 0.5 | G4XMONSOONX-A-A1 | — | — | — |
| K | A/C clutch relay | — | W23 | — | 0.5 | G4XMONSOONX-A-A19 | — | — | — |
| M | Fuel pump relay | — | W24 | — | 0.5 | G4XMONSOONX-A-A18 | — | — | — |
| N | VTCS solenoid (intake butterflies) | — | — | — | — | — | — | — | — |
| P | ISC valve +14V feed | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| Q | ISC valve low side | — | — | — | — | — | — | — | — |
| R | Malfunction indicator lamp (MIL) | — | — | — | — | — | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| D | EGR boost solenoid | — | — | — | — | — | — | — | — |
| E | Charcoal canister purge | — | — | — | — | — | — | — | — |
| F | Ignition 1 (coils 1+4, wasted spark) | — | W15 | — | 0.5 | G4XMONSOONX-A-A13 | — | — | — |
| H | Main relay | — | W25 | — | 0.5 | G4XMONSOONX-A-A27 | — | — | — |
| I | Ignition 2 (coils 2+3, wasted spark) | — | W16 | — | 0.5 | G4XMONSOONX-A-A12 | — | — | — |
| J | Front O2 heater | — | W26 | — | 0.5 | G4XMONSOONX-A-A26 | — | — | — |
| M | Alternator control | — | — | — | — | — | — | — | — |
| O | Tachometer output | — | — | — | — | — | — | — | — |
| P | Rear O2 heater | — | — | — | — | — | — | — | — |
| S | Immobiliser | — | W34 | — | 0.5 | G4XMONSOONX-A-A31 | — | — | — |
| T | Vehicle speed | — | W33 | — | 0.5 | G4XMONSOONX-A-A30 | — | — | — |
| U | Charge lamp | — | — | — | — | — | — | — | — |
| V | Cam position (CMP) | — | W13 | — | 0.5 | G4XMONSOONX-A-A9 | — | — | — |
| Y | Crank position (CKP) | — | W12 | — | 0.5 | G4XMONSOONX-A-A8 | — | — | — |
OEM-4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| AA | Rear O2 signal | — | W29 | — | 0.5 | G4XMONSOONX-A-A33 | — | — | — |
| AD | Fuel level | — | — | — | — | — | — | — | — |
| AF | ECU power +14V (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| AG | Constant +12V | — | — | — | — | — | — | — | — |
| B | Brake switch | — | W35 | — | 0.5 | G4XMONSOONX-A-A23 | — | — | — |
| C | Power steering pressure switch | — | — | — | — | — | — | — | — |
| D | VVT oil-control solenoid | — | — | — | — | — | — | — | — |
| F | A/C request | — | — | — | — | — | — | — | — |
| H | Neutral switch | — | — | — | — | — | — | — | — |
| I | Clutch switch | — | — | — | — | — | — | — | — |
| J | VTCS vacuum switch | — | — | — | — | — | — | — | — |
| L | +5V sensor supply | — | W11 | — | 0.5 | G4XMONSOONX-A-A32 | — | — | — |
| M | Knock sensor | — | W14 | — | 0.5 | G4XMONSOONX-A-A6 | — | — | — |
| N | Intake air temperature (IAT) | — | W32 | — | 0.5 | G4XMONSOONX-A-A16 | — | — | — |
| O | Signal ground | — | W9 | — | 0.5 | SP-0V-1 | — | — | — |
| P | Coolant temperature (ECT) | — | W31 | — | 0.5 | G4XMONSOONX-A-A15 | — | — | — |
| V | Throttle position (TPS) | — | W28 | — | 0.5 | G4XMONSOONX-A-A22 | — | — | — |
| W | Front O2 signal | — | W30 | — | 0.5 | G4XMONSOONX-A-A14 | — | — | — |
| X | Mass air flow (MAF) | — | W27 | — | 0.5 | G4XMONSOONX-A-A17 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W9 | — | 0.5 | OEM-4-O | — | — | — |
| 1 | — | — | W10 | — | 0.5 | G4XMONSOONX-A-A24 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-2-P | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-4-AF | — | — | — |
| 1 | — | — | W3 | — | 0.85 | G4XMONSOONX-A-A5 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-3-B | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-4-A | — | — | — |
| 1 | — | — | W7 | — | 0.85 | G4XMONSOONX-A-A25 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | G4XMONSOONX-A-A34 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-2-A | Injector 1 | injector_out | G4XMONSOONX-A-A4 | Injector 1 | injector_out | single_source | |
| OEM-2-B | Cooling fan relay | low_side_out | G4XMONSOONX-A-A21 | Aux 1 | low_side_out | single_source | |
| OEM-2-C | Condenser fan relay | low_side_out | G4XMONSOONX-A-A20 | Aux 2 | low_side_out | single_source | |
| OEM-2-D | Injector 2 | injector_out | G4XMONSOONX-A-A3 | Injector 2 | injector_out | single_source | |
| OEM-2-E | EGR valve | low_side_out | — | — | — | single_source | |
| OEM-2-F | EGR valve | low_side_out | — | — | — | single_source | |
| OEM-2-G | Injector 3 | injector_out | G4XMONSOONX-A-A2 | Injector 3 | injector_out | single_source | |
| OEM-2-H | EGR valve | low_side_out | — | — | — | single_source | |
| OEM-2-I | EGR valve | low_side_out | — | — | — | single_source | |
| OEM-2-J | Injector 4 | injector_out | G4XMONSOONX-A-A1 | Injector 4 | injector_out | single_source | |
| OEM-2-K | A/C clutch relay | low_side_out | G4XMONSOONX-A-A19 | Aux 3 | low_side_out | single_source | |
| OEM-2-M | Fuel pump relay | low_side_out | G4XMONSOONX-A-A18 | Aux 4 | low_side_out | single_source | |
| OEM-2-N | VTCS solenoid (intake butterflies) | low_side_out | — | — | — | single_source | |
| OEM-2-P | ISC valve +14V feed | power_in | G4XMONSOONX-A-A5 | +14V ECU Power | power_in | single_source | |
| OEM-2-Q | ISC valve low side | low_side_out | — | — | — | single_source | |
| OEM-2-R | Malfunction indicator lamp (MIL) | low_side_out | — | — | — | single_source | |
| OEM-3-A | Power ground | ground | G4XMONSOONX-A-A25 + G4XMONSOONX-A-A34 | System Ground + System Ground | ground | single_source | |
| OEM-3-B | Power ground | ground | G4XMONSOONX-A-A25 + G4XMONSOONX-A-A34 | System Ground + System Ground | ground | single_source | |
| OEM-3-D | EGR boost solenoid | low_side_out | — | — | — | single_source | |
| OEM-3-E | Charcoal canister purge | low_side_out | — | — | — | single_source | |
| OEM-3-F | Ignition 1 (coils 1+4, wasted spark) | ignition_out | G4XMONSOONX-A-A13 | Ignition 1 | ignition_out | single_source | |
| OEM-3-H | Main relay | low_side_out | G4XMONSOONX-A-A27 | Aux 5 | low_side_out | single_source | |
| OEM-3-I | Ignition 2 (coils 2+3, wasted spark) | ignition_out | G4XMONSOONX-A-A12 | Ignition 2 | ignition_out | single_source | |
| OEM-3-J | Front O2 heater | low_side_out | G4XMONSOONX-A-A26 | Aux 6 | low_side_out | single_source | |
| OEM-3-M | Alternator control | low_side_out | — | — | — | single_source | |
| OEM-3-O | Tachometer output | tacho_out | — | — | — | single_source | |
| OEM-3-P | Rear O2 heater | low_side_out | — | — | — | single_source | |
| OEM-3-S | Immobiliser | digital_in | G4XMONSOONX-A-A31 | Digital Input 2 | digital_in | single_source | |
| OEM-3-T | Vehicle speed | digital_in | G4XMONSOONX-A-A30 | Digital Input 1 | digital_in | single_source | |
| OEM-3-U | Charge lamp | low_side_out | — | — | — | single_source | |
| OEM-3-V | Cam position (CMP) | trigger_in | G4XMONSOONX-A-A9 | Trigger 2 | trigger_in | single_source | |
| OEM-3-Y | Crank position (CKP) | trigger_in | G4XMONSOONX-A-A8 | Trigger 1 | trigger_in | single_source | |
| OEM-4-A | Power ground | ground | G4XMONSOONX-A-A25 + G4XMONSOONX-A-A34 | System Ground + System Ground | ground | single_source | |
| OEM-4-AA | Rear O2 signal | lambda_nb_in | G4XMONSOONX-A-A33 | Analog Volt 3 | analog_in | single_source | |
| OEM-4-AD | Fuel level | analog_in | — | — | — | single_source | |
| OEM-4-AF | ECU power +14V (main relay) | power_in | G4XMONSOONX-A-A5 | +14V ECU Power | power_in | single_source | |
| OEM-4-AG | Constant +12V | power_in | — | — | — | single_source | |
| OEM-4-B | Brake switch | digital_in | G4XMONSOONX-A-A23 | Digital Input 3 | digital_in | single_source | |
| OEM-4-C | Power steering pressure switch | digital_in | — | — | — | single_source | |
| OEM-4-D | VVT oil-control solenoid | low_side_out | — | — | — | single_source | |
| OEM-4-F | A/C request | digital_in | — | — | — | single_source | |
| OEM-4-H | Neutral switch | digital_in | — | — | — | single_source | |
| OEM-4-I | Clutch switch | digital_in | — | — | — | single_source | |
| OEM-4-J | VTCS vacuum switch | digital_in | — | — | — | single_source | |
| OEM-4-L | +5V sensor supply | vref | G4XMONSOONX-A-A32 | +5V Out | vref | single_source | |
| OEM-4-M | Knock sensor | knock_in | G4XMONSOONX-A-A6 | Knock 1 / Digital Input 4 | knock_in | single_source | |
| OEM-4-N | Intake air temperature (IAT) | temp_in | G4XMONSOONX-A-A16 | Analog Temp 2 | temp_in | single_source | |
| OEM-4-O | Signal ground | sensor_ground | G4XMONSOONX-A-A24 | Sensor Ground | sensor_ground | single_source | |
| OEM-4-P | Coolant temperature (ECT) | temp_in | G4XMONSOONX-A-A15 | Analog Temp 1 | temp_in | single_source | |
| OEM-4-V | Throttle position (TPS) | analog_in | G4XMONSOONX-A-A22 | Analog Volt 2 | analog_in | single_source | |
| OEM-4-W | Front O2 signal | lambda_nb_in | G4XMONSOONX-A-A14 | Analog Volt 4 | analog_in | single_source | |
| OEM-4-X | Mass air flow (MAF) | analog_in | G4XMONSOONX-A-A17 | Analog Volt 1 | analog_in | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-2-P | SP-14V-1 | 0.85 | no route | ISC valve +14V feed | — | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | no route | ECU power +14V (main relay) | — | |
| W3 | SP-14V-1 | G4XMONSOONX-A-A5 | 0.85 | no route | +14V ECU Power | — | |
| W4 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W5 | OEM-3-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-4-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | SP-GND-1 | G4XMONSOONX-A-A25 | 0.85 | no route | System Ground | — | |
| W8 | SP-GND-1 | G4XMONSOONX-A-A34 | 0.85 | no route | System Ground | — | |
| W9 | OEM-4-O | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W10 | SP-0V-1 | G4XMONSOONX-A-A24 | 0.5 | no route | Sensor Ground | — | |
| W11 | OEM-4-L | G4XMONSOONX-A-A32 | 0.5 | no route | +5V sensor supply | — | |
| W12 | OEM-3-Y | G4XMONSOONX-A-A8 | 0.5 | no route | Crank position (CKP) | — | |
| W13 | OEM-3-V | G4XMONSOONX-A-A9 | 0.5 | no route | Cam position (CMP) | — | |
| W14 | OEM-4-M | G4XMONSOONX-A-A6 | 0.5 | no route | Knock sensor | — | |
| W15 | OEM-3-F | G4XMONSOONX-A-A13 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W16 | OEM-3-I | G4XMONSOONX-A-A12 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W17 | OEM-2-A | G4XMONSOONX-A-A4 | 0.5 | no route | Injector 1 | — | |
| W18 | OEM-2-D | G4XMONSOONX-A-A3 | 0.5 | no route | Injector 2 | — | |
| W19 | OEM-2-G | G4XMONSOONX-A-A2 | 0.5 | no route | Injector 3 | — | |
| W20 | OEM-2-J | G4XMONSOONX-A-A1 | 0.5 | no route | Injector 4 | — | |
| W21 | OEM-2-B | G4XMONSOONX-A-A21 | 0.5 | no route | Cooling fan relay | — | |
| W22 | OEM-2-C | G4XMONSOONX-A-A20 | 0.5 | no route | Condenser fan relay | — | |
| W23 | OEM-2-K | G4XMONSOONX-A-A19 | 0.5 | no route | A/C clutch relay | — | |
| W24 | OEM-2-M | G4XMONSOONX-A-A18 | 0.5 | no route | Fuel pump relay | — | |
| W25 | OEM-3-H | G4XMONSOONX-A-A27 | 0.5 | no route | Main relay | — | |
| W26 | OEM-3-J | G4XMONSOONX-A-A26 | 0.5 | no route | Front O2 heater | — | |
| W27 | OEM-4-X | G4XMONSOONX-A-A17 | 0.5 | no route | Mass air flow (MAF) | — | |
| W28 | OEM-4-V | G4XMONSOONX-A-A22 | 0.5 | no route | Throttle position (TPS) | — | |
| W29 | OEM-4-AA | G4XMONSOONX-A-A33 | 0.5 | no route | Rear O2 signal | — | |
| W30 | OEM-4-W | G4XMONSOONX-A-A14 | 0.5 | no route | Front O2 signal | — | |
| W31 | OEM-4-P | G4XMONSOONX-A-A15 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W32 | OEM-4-N | G4XMONSOONX-A-A16 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W33 | OEM-3-T | G4XMONSOONX-A-A30 | 0.5 | no route | Vehicle speed | — | |
| W34 | OEM-3-S | G4XMONSOONX-A-A31 | 0.5 | no route | Immobiliser | — | |
| W35 | OEM-4-B | G4XMONSOONX-A-A23 | 0.5 | no route | Brake switch | — |
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 (6)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | LOAD_UNKNOWN | G4XMONSOONX-A-A18 | G4XMONSOONX-A-A18 "Aux 4" drives OEM-2-M Fuel pump relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XMONSOONX-A-A19 | G4XMONSOONX-A-A19 "Aux 3" drives OEM-2-K A/C clutch relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XMONSOONX-A-A20 | G4XMONSOONX-A-A20 "Aux 2" drives OEM-2-C Condenser fan relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XMONSOONX-A-A21 | G4XMONSOONX-A-A21 "Aux 1" drives OEM-2-B Cooling fan relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XMONSOONX-A-A27 | G4XMONSOONX-A-A27 "Aux 5" drives OEM-3-H Main relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | UNMAPPED | OEM | 20 optional OEM pins are not mapped: OEM-2-E EGR valve; OEM-2-F EGR valve; OEM-2-H EGR valve; OEM-2-I EGR valve; OEM-2-N VTCS solenoid (intake butterflies); OEM-2-Q ISC valve low side; OEM-2-R Malfunction indicator lamp (MIL); OEM-3-D EGR boost solenoid; OEM-3-E Charcoal canister purge; OEM-3-M Alternator control; OEM-3-O Tachometer output; OEM-3-P Rear O2 heater; OEM-3-U Charge lamp; OEM-4-AD Fuel level; OEM-4-C Power steering pressure switch; OEM-4-D VVT oil-control solenoid; OEM-4-F A/C request; OEM-4-H Neutral switch; OEM-4-I Clutch switch; OEM-4-J VTCS vacuum switch |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-4-AG | 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: unconfirmed. Confirm these before building: - Trigger pattern for Mazda BP-Z3 not found in the ECU's docs (Link's trigger-mode list is only inside PCLink, not online) Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Not wired: - OEM-4 AG: Constant +12V: Link G4X MonsoonX has no battery-constant input; not needed - OEM-3 P: Rear O2 heater: no free heater_low_side/low_side/ls_hs/hbridge on Link G4X MonsoonX - OEM-2 Q: ISC valve low side: no free low_side/ls_hs/injector/hbridge rated ≥ 1.0 A on Link G4X MonsoonX - OEM-2 E: EGR valve: no free low_side/ls_hs/injector/hbridge on Link G4X MonsoonX - OEM-2 F: EGR valve: no free low_side/ls_hs/injector/hbridge on Link G4X MonsoonX - OEM-2 H: EGR valve: no free low_side/ls_hs/injector/hbridge on Link G4X MonsoonX - OEM-2 I: EGR valve: no free low_side/ls_hs/injector/hbridge on Link G4X MonsoonX - OEM-2 N: VTCS solenoid (intake butterflies): no free low_side/ls_hs/injector/hbridge on Link G4X MonsoonX - OEM-2 R: Malfunction indicator lamp (MIL): no free low_side/ls_hs/injector/hbridge on Link G4X MonsoonX - OEM-3 D: EGR boost solenoid: no free low_side/ls_hs/injector/hbridge on Link G4X MonsoonX - OEM-3 E: Charcoal canister purge: no free low_side/ls_hs/injector/hbridge on Link G4X MonsoonX - OEM-3 M: Alternator control: no free low_side/ls_hs/injector/hbridge on Link G4X MonsoonX - OEM-3 U: Charge lamp: no free low_side/ls_hs/injector/hbridge on Link G4X MonsoonX - OEM-4 D: VVT oil-control solenoid: no free low_side/ls_hs/injector/hbridge on Link G4X MonsoonX - OEM-3 O: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on Link G4X MonsoonX - OEM-4 AD: Fuel level: no free analog_0_5 on Link G4X MonsoonX - OEM-4 C: Power steering pressure switch: no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-4 F: A/C request: no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-4 H: Neutral switch: no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-4 I: Clutch switch: no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-4 J: VTCS vacuum switch: no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Link G4X MX5NB2X install manual (NB2 2001-05) | https://linkecu.com/documentation/MX5XNB2.pdf | archive | 2026-10-05 | 741efdd9f2c8 |
| 4 | vendor_doc | Link: G4X MonsoonX quickstart + RET 115-1000 | https://linkecu.com/documentation/MonsoonXQuickstartGuide.pdf | archive | 2026-10-05 | e8d432b273d6 |
| 3 | community_copy | YourSpec: Link G4X MonsoonX flying-lead harness wiring list | https://wpm.yourspec.com/projects/view/1469 | — | — | — |