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S2000 AP2 2006–09 cable conversion → MaxxECU MaxxECU MINI

AP2 2006–09 converted to cable throttle — MaxxECU — MaxxECU MINI
⚠ 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.

Statusdraft · not yet verified: nobody has reported building and running this harness
Open errors1: read the Findings page before cutting any wire
Size of the job42 wires · 12 connectors · 5 part lines
ToolsCrimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink
Order of work1. 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.

WireFromToGaugeColourCutLabelCrimp ACrimp BPin APin BContinuity
W1OEM-A-2SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-A-3SP-14V-10.85☐☐☐☐☐☐☐
W3SP-14V-1MAXXECUMINI-C1-H40.85☐☐☐☐☐☐☐
W4OEM-A-4SP-GND-10.85☐☐☐☐☐☐☐
W5OEM-A-5SP-GND-10.85☐☐☐☐☐☐☐
W6OEM-A-8SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-A-9SP-GND-10.85☐☐☐☐☐☐☐
W8OEM-E-3SP-GND-10.85☐☐☐☐☐☐☐
W9SP-GND-1MAXXECUMINI-C1-G40.85☐☐☐☐☐☐☐
W10OEM-A-24SP-0V-10.5☐☐☐☐☐☐☐
W11SP-0V-1MAXXECUMINI-C1-A20.5☐☐☐☐☐☐☐
W12SP-0V-1MAXXECUMINI-C1-B30.5☐☐☐☐☐☐☐
W13SP-0V-1MAXXECUMINI-C1-B40.5☐☐☐☐☐☐☐
W14SP-0V-1MAXXECUMINI-C1-D40.5☐☐☐☐☐☐☐
W15SP-5V1-1MAXXECUMINI-C1-E20.5☐☐☐☐☐☐☐
W16OEM-A-7MAXXECUMINI-C1-A10.5☐☐☐☐☐☐☐
W17OEM-A-16MAXXECUMINI-C1-F10.5☐☐☐☐☐☐☐
W18OEM-A-15MAXXECUMINI-C1-F20.5☐☐☐☐☐☐☐
W19OEM-A-14MAXXECUMINI-C1-F30.5☐☐☐☐☐☐☐
W20OEM-A-13MAXXECUMINI-C1-F40.5☐☐☐☐☐☐☐
W21OEM-B-5MAXXECUMINI-C1-G30.5☐☐☐☐☐☐☐
W22OEM-B-4MAXXECUMINI-C1-H10.5☐☐☐☐☐☐☐
W23OEM-B-3MAXXECUMINI-C1-H20.5☐☐☐☐☐☐☐
W24OEM-B-2MAXXECUMINI-C1-H30.5☐☐☐☐☐☐☐
W25OEM-E-17MAXXECUMINI-C1-G20.5☐☐☐☐☐☐☐
W26OEM-E-7MAXXECUMINI-C1-G10.5☐☐☐☐☐☐☐
W27OEM-B-6RLY1-R-OUT0.5☐☐☐☐☐☐☐
W28SP-14V-1RLY1-R-IN0.5☐☐☐☐☐☐☐
W29SP-14V-1RLY1-R-COIL+0.5☐☐☐☐☐☐☐
W30RLY1-R-COIL-MAXXECUMINI-C1-E10.5☐☐☐☐☐☐☐
W31OEM-A-30MAXXECUMINI-C1-C30.5☐☐☐☐☐☐☐
W32OEM-B-8MAXXECUMINI-C1-C10.5☐☐☐☐☐☐☐
W33OEM-E-1MAXXECUMINI-C1-C20.5☐☐☐☐☐☐☐
W34OEM-A-18MAXXECUMINI-C1-B10.5☐☐☐☐☐☐☐
W35OEM-B-11MAXXECUMINI-C1-B20.5☐☐☐☐☐☐☐
W36OEM-E-11MAXXECUMINI-C1-E40.5☐☐☐☐☐☐☐
W37OEM-E-24MAXXECUMINI-C1-E30.5☐☐☐☐☐☐☐
W38OEM-A-21SP-5V-10.5☐☐☐☐☐☐☐
W39SP-5V-1SP-5V1-10.5☐☐☐☐☐☐☐
W40SP-5V-1TPS-J-VCC0.5☐☐☐☐☐☐☐
W41TPS-J-SIGMAXXECUMINI-C1-C40.5☐☐☐☐☐☐☐
W42TPS-J-GNDSP-0V-10.5☐☐☐☐☐☐☐

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 AProbe BExpectWhyReading
1MAXXECUMINI-C1-E2MAXXECUMINI-C1-A2open (OL)5 V sensor reference must not touch sensor ground
2MAXXECUMINI-C1-H4MAXXECUMINI-C1-A2open (OL)+12 V supply must not touch sensor ground
3MAXXECUMINI-C1-H4MAXXECUMINI-C1-G4open (OL)+12 V supply must not touch power ground
4MAXXECUMINI-C1-A2RLY1-R-OUTopen (OL)sensor ground must not touch +12 V supply
5MAXXECUMINI-C1-E2RLY1-R-OUTopen (OL)5 V sensor reference must not touch +12 V supply
6MAXXECUMINI-C1-G4MAXXECUMINI-C1-E2open (OL)power ground must not touch 5 V sensor reference
7MAXXECUMINI-C1-G4RLY1-R-OUTopen (OL)power ground must not touch +12 V supply
8MAXXECUMINI-C1-H4MAXXECUMINI-C1-E2open (OL)+12 V supply must not touch 5 V sensor reference

If any reading doesn't match, stop and get help before powering up.

Revisions

RevLabelByDate
No revisions yet.

Schematic

MAXXECUMINI-C1OEM-AOEM-BOEM-DOEM-ERLY1-RSP-0VSP-14VSP-5VSP-5V1SP-GNDTPS-J

Connectors

MAXXECUMINI-C1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
A1TRIGGER—W16—0.5OEM-A-7———
A2TRIGGER GND—W11—0.5SP-0V-1———
B1DIN 1 (Hall only)—W34—0.5OEM-A-18———
B2DIN 2 (Hall only)—W35—0.5OEM-B-11———
B3SENSOR GND—W12—0.5SP-0V-1———
B4SENSOR GND—W13—0.5SP-0V-1———
C1CLT—W32—0.5OEM-B-8———
C2IAT—W33—0.5OEM-E-1———
C3AIN 3 (0-5V)—W31—0.5OEM-A-30———
C4AIN 4 (0-5V)—W41—0.5TPS-J-SIG———
D1GPO 8/TACHO————————
D2TPS————————
D3GND Shield————————
D4SENSOR GND—W14—0.5SP-0V-1———
E1GPO 3—W30—0.5RLY1-R-COIL-———
E2+5V sensor supply—W15—0.5SP-5V1-1———
E3CAN L—W37—0.5OEM-E-24———
E4CAN H—W36—0.5OEM-E-11———
F1IGN 1—W17—0.5OEM-A-16———
F2IGN 2—W18—0.5OEM-A-15———
F3IGN 3—W19—0.5OEM-A-14———
F4IGN 4—W20—0.5OEM-A-13———
G1GPO 2—W26—0.5OEM-E-7———
G2GPO 1—W25—0.5OEM-E-17———
G3INJ 1—W21—0.5OEM-B-5———
G4ENGINE GND—W9—0.85SP-GND-1———
H1INJ 2—W22—0.5OEM-B-4———
H2INJ 3—W23—0.5OEM-B-3———
H3INJ 4—W24—0.5OEM-B-2———
H4+12V (ECU power supply)—W3—0.85SP-14V-1———

OEM-A

Mating face
OEM-A-1 · Knock sensor1OEM-A-2 · Ignition power 22OEM-A-3 · Ignition power 13OEM-A-4 · Power ground 24OEM-A-5 · Power ground 15OEM-A-6 · Cam position sensor (T2)6OEM-A-7 · Crank position sensor (T1)7OEM-A-8 · Logic ground 28OEM-A-9 · Logic ground 19OEM-A-10 · A/F sensor heater10OEM-A-11 · Unused cavity11OEM-A-12 · Unused cavity12OEM-A-13 · Ignition coil 413OEM-A-14 · Ignition coil 314OEM-A-15 · Ignition coil 215OEM-A-16 · Ignition coil 116OEM-A-17 · Unused cavity17OEM-A-18 · Vehicle speed sensor18OEM-A-19 · Unused cavity19OEM-A-20 · Sensor voltage 220OEM-A-21 · Sensor voltage 121OEM-A-22 · Unused cavity22OEM-A-23 · Sensor ground 223OEM-A-24 · Sensor ground 124OEM-A-25 · Accelerator pedal position B25OEM-A-26 · Accelerator pedal position A26OEM-A-27 · Unused cavity27OEM-A-28 · A/F sensor signal −28OEM-A-29 · Unused cavity29OEM-A-30 · MAP sensor30OEM-A-31 · A/F sensor signal +31
Wire side
OEM-A-1 · Knock sensor1OEM-A-2 · Ignition power 22OEM-A-3 · Ignition power 13OEM-A-4 · Power ground 24OEM-A-5 · Power ground 15OEM-A-6 · Cam position sensor (T2)6OEM-A-7 · Crank position sensor (T1)7OEM-A-8 · Logic ground 28OEM-A-9 · Logic ground 19OEM-A-10 · A/F sensor heater10OEM-A-11 · Unused cavity11OEM-A-12 · Unused cavity12OEM-A-13 · Ignition coil 413OEM-A-14 · Ignition coil 314OEM-A-15 · Ignition coil 215OEM-A-16 · Ignition coil 116OEM-A-17 · Unused cavity17OEM-A-18 · Vehicle speed sensor18OEM-A-19 · Unused cavity19OEM-A-20 · Sensor voltage 220OEM-A-21 · Sensor voltage 121OEM-A-22 · Unused cavity22OEM-A-23 · Sensor ground 223OEM-A-24 · Sensor ground 124OEM-A-25 · Accelerator pedal position B25OEM-A-26 · Accelerator pedal position A26OEM-A-27 · Unused cavity27OEM-A-28 · A/F sensor signal −28OEM-A-29 · Unused cavity29OEM-A-30 · MAP sensor30OEM-A-31 · A/F sensor signal +31
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Knock sensor————————
2Ignition power 2—W1—0.85SP-14V-1———
3Ignition power 1—W2—0.85SP-14V-1———
4Power ground 2—W4—0.85SP-GND-1———
5Power ground 1—W5—0.85SP-GND-1———
6Cam position sensor (T2)————————
7Crank position sensor (T1)—W16—0.5MAXXECUMINI-C1-A1———
8Logic ground 2—W6—0.85SP-GND-1———
9Logic ground 1—W7—0.85SP-GND-1———
10A/F sensor heater————————
11Unused cavity————————
12Unused cavity————————
13Ignition coil 4—W20—0.5MAXXECUMINI-C1-F4———
14Ignition coil 3—W19—0.5MAXXECUMINI-C1-F3———
15Ignition coil 2—W18—0.5MAXXECUMINI-C1-F2———
16Ignition coil 1—W17—0.5MAXXECUMINI-C1-F1———
17Unused cavity————————
18Vehicle speed sensor—W34—0.5MAXXECUMINI-C1-B1———
19Unused cavity————————
20Sensor voltage 2————————
21Sensor voltage 1—W38—0.5SP-5V-1———
22Unused cavity————————
23Sensor ground 2————————
24Sensor ground 1—W10—0.5SP-0V-1———
25Accelerator pedal position B————————
26Accelerator pedal position A————————
27Unused cavity————————
28A/F sensor signal −————————
29Unused cavity————————
30MAP sensor—W31—0.5MAXXECUMINI-C1-C3———
31A/F sensor signal +————————

OEM-B

Mating face
OEM-B-1 · Unused cavity1OEM-B-2 · Injector 42OEM-B-3 · Injector 33OEM-B-4 · Injector 24OEM-B-5 · Injector 15OEM-B-6 · VTEC solenoid6OEM-B-7 · Unused cavity7OEM-B-8 · Coolant temp sensor8OEM-B-9 · Unused cavity9OEM-B-10 · Alternator L signal10OEM-B-11 · VTEC oil pressure switch11OEM-B-12 · Unused cavity12OEM-B-13 · Alternator FR signal13OEM-B-14 · Unused cavity14OEM-B-15 · Engine mount control solenoid15OEM-B-16 · Unused cavity16OEM-B-17 · Intake air temp sensor17OEM-B-18 · Alternator control18OEM-B-19 · Throttle actuator command to throttle control module (SEFD)19OEM-B-20 · Throttle actuator command to throttle control module (SEDF)20OEM-B-21 · Evap canister purge valve21OEM-B-22 · Unused cavity22OEM-B-23 · Unused cavity23OEM-B-24 · Unused cavity24
Wire side
OEM-B-1 · Unused cavity1OEM-B-2 · Injector 42OEM-B-3 · Injector 33OEM-B-4 · Injector 24OEM-B-5 · Injector 15OEM-B-6 · VTEC solenoid6OEM-B-7 · Unused cavity7OEM-B-8 · Coolant temp sensor8OEM-B-9 · Unused cavity9OEM-B-10 · Alternator L signal10OEM-B-11 · VTEC oil pressure switch11OEM-B-12 · Unused cavity12OEM-B-13 · Alternator FR signal13OEM-B-14 · Unused cavity14OEM-B-15 · Engine mount control solenoid15OEM-B-16 · Unused cavity16OEM-B-17 · Intake air temp sensor17OEM-B-18 · Alternator control18OEM-B-19 · Throttle actuator command to throttle control module (SEFD)19OEM-B-20 · Throttle actuator command to throttle control module (SEDF)20OEM-B-21 · Evap canister purge valve21OEM-B-22 · Unused cavity22OEM-B-23 · Unused cavity23OEM-B-24 · Unused cavity24
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Unused cavity————————
2Injector 4—W24—0.5MAXXECUMINI-C1-H3———
3Injector 3—W23—0.5MAXXECUMINI-C1-H2———
4Injector 2—W22—0.5MAXXECUMINI-C1-H1———
5Injector 1—W21—0.5MAXXECUMINI-C1-G3———
6VTEC solenoid—W27—0.5RLY1-R-OUT———
7Unused cavity————————
8Coolant temp sensor—W32—0.5MAXXECUMINI-C1-C1———
9Unused cavity————————
10Alternator L signal————————
11VTEC oil pressure switch—W35—0.5MAXXECUMINI-C1-B2———
12Unused cavity————————
13Alternator FR signal————————
14Unused cavity————————
15Engine mount control solenoid————————
16Unused cavity————————
17Intake air temp sensor————————
18Alternator control————————
19Throttle actuator command to throttle control module (SEFD)————————
20Throttle actuator command to throttle control module (SEDF)————————
21Evap canister purge valve————————
22Unused cavity————————
23Unused cavity————————
24Unused cavity————————

OEM-D

Mating face
OEM-D-1 · Cruise set switch1OEM-D-2 · Unused cavity2OEM-D-3 · Unused cavity3OEM-D-4 · Cruise main switch4OEM-D-5 · Unused cavity5OEM-D-6 · Unused cavity6OEM-D-7 · Cruise resume switch7OEM-D-8 · Brake pedal position switch8OEM-D-9 · Cruise clutch signal9OEM-D-10 · Unused cavity10OEM-D-11 · Unused cavity11OEM-D-12 · Unused cavity12OEM-D-13 · Unused cavity13OEM-D-14 · Unused cavity14OEM-D-15 · Throttle actuator relay15OEM-D-16 · Unused cavity16OEM-D-17 · Unused cavity17
Wire side
OEM-D-1 · Cruise set switch1OEM-D-2 · Unused cavity2OEM-D-3 · Unused cavity3OEM-D-4 · Cruise main switch4OEM-D-5 · Unused cavity5OEM-D-6 · Unused cavity6OEM-D-7 · Cruise resume switch7OEM-D-8 · Brake pedal position switch8OEM-D-9 · Cruise clutch signal9OEM-D-10 · Unused cavity10OEM-D-11 · Unused cavity11OEM-D-12 · Unused cavity12OEM-D-13 · Unused cavity13OEM-D-14 · Unused cavity14OEM-D-15 · Throttle actuator relay15OEM-D-16 · Unused cavity16OEM-D-17 · Unused cavity17
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Cruise set switch————————
2Unused cavity————————
3Unused cavity————————
4Cruise main switch————————
5Unused cavity————————
6Unused cavity————————
7Cruise resume switch————————
8Brake pedal position switch————————
9Cruise clutch signal————————
10Unused cavity————————
11Unused cavity————————
12Unused cavity————————
13Unused cavity————————
14Unused cavity————————
15Throttle actuator relay————————
16Unused cavity————————
17Unused cavity————————

OEM-E

Mating face
OEM-E-1 · Coolant temp sensor 21OEM-E-2 · Unused cavity2OEM-E-3 · Logic ground 33OEM-E-4 · Sensor ground 34OEM-E-5 · Sensor voltage 35OEM-E-6 · Unused cavity6OEM-E-7 · Main relay control7OEM-E-8 · A/F sensor heater relay8OEM-E-9 · Ignition signal9OEM-E-10 · Unused cavity10OEM-E-11 · CAN H11OEM-E-12 · Radiator fan control12OEM-E-13 · Multiplex communication13OEM-E-14 · Fuel tank pressure sensor14OEM-E-15 · Electrical load detector15OEM-E-16 · Power steering load detector16OEM-E-17 · Fuel pump relay17OEM-E-18 · A/C clutch relay18OEM-E-19 · Evap canister vent shut valve19OEM-E-20 · Secondary O2 sensor20OEM-E-21 · Secondary O2 heater21OEM-E-22 · Brake pedal switch22OEM-E-23 · Unused cavity23OEM-E-24 · CAN L24OEM-E-25 · Engine speed pulse (tacho)25OEM-E-26 · Vehicle speed output26OEM-E-27 · Immobilizer code27OEM-E-28 · A/C switch signal28OEM-E-29 · Service check signal29OEM-E-30 · Write enable signal30OEM-E-31 · Unused cavity31
Wire side
OEM-E-1 · Coolant temp sensor 21OEM-E-2 · Unused cavity2OEM-E-3 · Logic ground 33OEM-E-4 · Sensor ground 34OEM-E-5 · Sensor voltage 35OEM-E-6 · Unused cavity6OEM-E-7 · Main relay control7OEM-E-8 · A/F sensor heater relay8OEM-E-9 · Ignition signal9OEM-E-10 · Unused cavity10OEM-E-11 · CAN H11OEM-E-12 · Radiator fan control12OEM-E-13 · Multiplex communication13OEM-E-14 · Fuel tank pressure sensor14OEM-E-15 · Electrical load detector15OEM-E-16 · Power steering load detector16OEM-E-17 · Fuel pump relay17OEM-E-18 · A/C clutch relay18OEM-E-19 · Evap canister vent shut valve19OEM-E-20 · Secondary O2 sensor20OEM-E-21 · Secondary O2 heater21OEM-E-22 · Brake pedal switch22OEM-E-23 · Unused cavity23OEM-E-24 · CAN L24OEM-E-25 · Engine speed pulse (tacho)25OEM-E-26 · Vehicle speed output26OEM-E-27 · Immobilizer code27OEM-E-28 · A/C switch signal28OEM-E-29 · Service check signal29OEM-E-30 · Write enable signal30OEM-E-31 · Unused cavity31
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Coolant temp sensor 2—W33—0.5MAXXECUMINI-C1-C2———
2Unused cavity————————
3Logic ground 3—W8—0.85SP-GND-1———
4Sensor ground 3————————
5Sensor voltage 3————————
6Unused cavity————————
7Main relay control—W26—0.5MAXXECUMINI-C1-G1———
8A/F sensor heater relay————————
9Ignition signal————————
10Unused cavity————————
11CAN H—W36—0.5MAXXECUMINI-C1-E4———
12Radiator fan control————————
13Multiplex communication————————
14Fuel tank pressure sensor————————
15Electrical load detector————————
16Power steering load detector————————
17Fuel pump relay—W25—0.5MAXXECUMINI-C1-G2———
18A/C clutch relay————————
19Evap canister vent shut valve————————
20Secondary O2 sensor————————
21Secondary O2 heater————————
22Brake pedal switch————————
23Unused cavity————————
24CAN L—W37—0.5MAXXECUMINI-C1-E3———
25Engine speed pulse (tacho)————————
26Vehicle speed output————————
27Immobilizer code————————
28A/C switch signal————————
29Service check signal————————
30Write enable signal————————
31Unused cavity————————

RLY1-R

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
COIL+Relay coil positive (switched +12 V)—W29—0.5SP-14V-1———
COIL-Relay coil negative (ECU low-side driver)—W30—0.5MAXXECUMINI-C1-E1———
INRelay contact input (switched +12 V)—W28—0.5SP-14V-1———
OUTRelay contact output (switched +12 V to load)—W27—0.5OEM-B-6———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W42—0.5TPS-J-GND———
1——W10—0.5OEM-A-24———
1——W11—0.5MAXXECUMINI-C1-A2———
1——W12—0.5MAXXECUMINI-C1-B3———
1——W13—0.5MAXXECUMINI-C1-B4———
1——W14—0.5MAXXECUMINI-C1-D4———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W2—0.85OEM-A-3———
1——W1—0.85OEM-A-2———
1——W3—0.85MAXXECUMINI-C1-H4———
1——W28—0.5RLY1-R-IN———
1——W29—0.5RLY1-R-COIL+———

SP-5V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W38—0.5OEM-A-21———
1——W39—0.5SP-5V1-1———
1——W40—0.5TPS-J-VCC———

SP-5V1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W39—0.5SP-5V-1———
1——W15—0.5MAXXECUMINI-C1-E2———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W4—0.85OEM-A-4———
1——W5—0.85OEM-A-5———
1——W6—0.85OEM-A-8———
1——W7—0.85OEM-A-9———
1——W8—0.85OEM-E-3———
1——W9—0.85MAXXECUMINI-C1-G4———

TPS-J

Mating face
Wire side
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
VCC5V supply in—W40—0.5SP-5V-1———
SIGThrottle position signal—W41—0.5MAXXECUMINI-C1-C4———
GNDSensor ground—W42—0.5SP-0V-1———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-A-1Knock sensorknock_in———single_source
OEM-A-10A/F sensor heaterlow_side_out———single_source
OEM-A-11Unused cavity————unverified
OEM-A-12Unused cavity————unverified
OEM-A-13Ignition coil 4ignition_outMAXXECUMINI-C1-F4IGN 4ignition_outsingle_source
OEM-A-14Ignition coil 3ignition_outMAXXECUMINI-C1-F3IGN 3ignition_outsingle_source
OEM-A-15Ignition coil 2ignition_outMAXXECUMINI-C1-F2IGN 2ignition_outsingle_source
OEM-A-16Ignition coil 1ignition_outMAXXECUMINI-C1-F1IGN 1ignition_outsingle_source
OEM-A-17Unused cavity————unverified
OEM-A-18Vehicle speed sensordigital_inMAXXECUMINI-C1-B1DIN 1 (Hall only)digital_insingle_source
OEM-A-19Unused cavity————unverified
OEM-A-2Ignition power 2power_inMAXXECUMINI-C1-H4 + RLY1-R-COIL+ + RLY1-R-IN+12V (ECU power supply) + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V)power_in + power_outsingle_source
OEM-A-20Sensor voltage 2vref———corroborated
OEM-A-21Sensor voltage 1vrefMAXXECUMINI-C1-E2 + TPS-J-VCC+5V sensor supply + 5V supply inpower_in + vrefsingle_source
OEM-A-22Unused cavity————unverified
OEM-A-23Sensor ground 2sensor_ground———corroborated
OEM-A-24Sensor ground 1sensor_groundMAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4 + TPS-J-GNDTRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GND + Sensor groundsensor_groundsingle_source
OEM-A-25Accelerator pedal position Banalog_in———corroborated
OEM-A-26Accelerator pedal position Aanalog_in———corroborated
OEM-A-27Unused cavity————unverified
OEM-A-28A/F sensor signal −————single_source
OEM-A-29Unused cavity————unverified
OEM-A-3Ignition power 1power_inMAXXECUMINI-C1-H4 + RLY1-R-COIL+ + RLY1-R-IN+12V (ECU power supply) + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V)power_in + power_outsingle_source
OEM-A-30MAP sensoranalog_inMAXXECUMINI-C1-C3AIN 3 (0-5V)analog_insingle_source
OEM-A-31A/F sensor signal +————single_source
OEM-A-4Power ground 2groundMAXXECUMINI-C1-G4ENGINE GNDgroundsingle_source
OEM-A-5Power ground 1groundMAXXECUMINI-C1-G4ENGINE GNDgroundsingle_source
OEM-A-6Cam position sensor (T2)trigger_in———single_source
OEM-A-7Crank position sensor (T1)trigger_inMAXXECUMINI-C1-A1TRIGGERtrigger_insingle_source
OEM-A-8Logic ground 2groundMAXXECUMINI-C1-G4ENGINE GNDgroundsingle_source
OEM-A-9Logic ground 1groundMAXXECUMINI-C1-G4ENGINE GNDgroundsingle_source
OEM-B-1Unused cavity————unverified
OEM-B-10Alternator L signal————single_source
OEM-B-11VTEC oil pressure switchdigital_inMAXXECUMINI-C1-B2DIN 2 (Hall only)digital_insingle_source
OEM-B-12Unused cavity————unverified
OEM-B-13Alternator FR signalanalog_in———single_source
OEM-B-14Unused cavity————unverified
OEM-B-15Engine mount control solenoidlow_side_out———single_source
OEM-B-16Unused cavity————unverified
OEM-B-17Intake air temp sensortemp_in———single_source
OEM-B-18Alternator controllow_side_out———single_source
OEM-B-19Throttle actuator command to throttle control module (SEFD)————conflict
OEM-B-2Injector 4injector_outMAXXECUMINI-C1-H3INJ 4injector_outsingle_source
OEM-B-20Throttle actuator command to throttle control module (SEDF)————conflict
OEM-B-21Evap canister purge valvelow_side_out———single_source
OEM-B-22Unused cavity————unverified
OEM-B-23Unused cavity————unverified
OEM-B-24Unused cavity————unverified
OEM-B-3Injector 3injector_outMAXXECUMINI-C1-H2INJ 3injector_outsingle_source
OEM-B-4Injector 2injector_outMAXXECUMINI-C1-H1INJ 2injector_outsingle_source
OEM-B-5Injector 1injector_outMAXXECUMINI-C1-G3INJ 1injector_outsingle_source
OEM-B-6VTEC solenoidhigh_side_outRLY1-R-OUTRelay contact output (switched +12 V to load)power_outsingle_source
OEM-B-7Unused cavity————unverified
OEM-B-8Coolant temp sensortemp_inMAXXECUMINI-C1-C1CLTtemp_insingle_source
OEM-B-9Unused cavity————unverified
OEM-D-1Cruise set switchdigital_in———single_source
OEM-D-10Unused cavity————unverified
OEM-D-11Unused cavity————unverified
OEM-D-12Unused cavity————unverified
OEM-D-13Unused cavity————unverified
OEM-D-14Unused cavity————unverified
OEM-D-15Throttle actuator relaylow_side_out———single_source
OEM-D-16Unused cavity————unverified
OEM-D-17Unused cavity————unverified
OEM-D-2Unused cavity————unverified
OEM-D-3Unused cavity————unverified
OEM-D-4Cruise main switchdigital_in———single_source
OEM-D-5Unused cavity————unverified
OEM-D-6Unused cavity————unverified
OEM-D-7Cruise resume switchdigital_in———single_source
OEM-D-8Brake pedal position switchdigital_in———single_source
OEM-D-9Cruise clutch signaldigital_in———single_source
OEM-E-1Coolant temp sensor 2temp_inMAXXECUMINI-C1-C2IATtemp_insingle_source
OEM-E-10Unused cavity————unverified
OEM-E-11CAN Hcan_hMAXXECUMINI-C1-E4CAN Hcan_hsingle_source
OEM-E-12Radiator fan controllow_side_out———single_source
OEM-E-13Multiplex communicationserial———single_source
OEM-E-14Fuel tank pressure sensoranalog_in———single_source
OEM-E-15Electrical load detectoranalog_in———single_source
OEM-E-16Power steering load detectoranalog_in———corroborated
OEM-E-17Fuel pump relaylow_side_outMAXXECUMINI-C1-G2GPO 1low_side_outsingle_source
OEM-E-18A/C clutch relaylow_side_out———single_source
OEM-E-19Evap canister vent shut valvelow_side_out———single_source
OEM-E-2Unused cavity————unverified
OEM-E-20Secondary O2 sensorlambda_nb_in———single_source
OEM-E-21Secondary O2 heaterlow_side_out———single_source
OEM-E-22Brake pedal switchdigital_in———single_source
OEM-E-23Unused cavity————unverified
OEM-E-24CAN Lcan_lMAXXECUMINI-C1-E3CAN Lcan_lsingle_source
OEM-E-25Engine speed pulse (tacho)tacho_out———single_source
OEM-E-26Vehicle speed outputtacho_out———single_source
OEM-E-27Immobilizer code————single_source
OEM-E-28A/C switch signaldigital_in———single_source
OEM-E-29Service check signal————single_source
OEM-E-3Logic ground 3groundMAXXECUMINI-C1-G4ENGINE GNDgroundsingle_source
OEM-E-30Write enable signal————single_source
OEM-E-31Unused cavity————unverified
OEM-E-4Sensor ground 3sensor_ground———corroborated
OEM-E-5Sensor voltage 3vref———corroborated
OEM-E-6Unused cavity————unverified
OEM-E-7Main relay controllow_side_outMAXXECUMINI-C1-G1GPO 2low_side_outsingle_source
OEM-E-8A/F sensor heater relaylow_side_out———single_source
OEM-E-9Ignition signaldigital_in———single_source

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-A-2SP-14V-10.85no routeIgnition power 2—
W2OEM-A-3SP-14V-10.85no routeIgnition power 1—
W3SP-14V-1MAXXECUMINI-C1-H40.85no route+12V (ECU power supply)—
W4OEM-A-4SP-GND-10.85no routePower ground 2—
W5OEM-A-5SP-GND-10.85no routePower ground 1—
W6OEM-A-8SP-GND-10.85no routeLogic ground 2—
W7OEM-A-9SP-GND-10.85no routeLogic ground 1—
W8OEM-E-3SP-GND-10.85no routeLogic ground 3—
W9SP-GND-1MAXXECUMINI-C1-G40.85no routeENGINE GND—
W10OEM-A-24SP-0V-10.5no routeSensor ground 1—
W11SP-0V-1MAXXECUMINI-C1-A20.5no routeTRIGGER GND—
W12SP-0V-1MAXXECUMINI-C1-B30.5no routeSENSOR GND—
W13SP-0V-1MAXXECUMINI-C1-B40.5no routeSENSOR GND—
W14SP-0V-1MAXXECUMINI-C1-D40.5no routeSENSOR GND—
W15SP-5V1-1MAXXECUMINI-C1-E20.5no route+5V sensor supply—
W16OEM-A-7MAXXECUMINI-C1-A10.5no routeCrank position sensor (T1)—
W17OEM-A-16MAXXECUMINI-C1-F10.5no routeIgnition coil 1—
W18OEM-A-15MAXXECUMINI-C1-F20.5no routeIgnition coil 2—
W19OEM-A-14MAXXECUMINI-C1-F30.5no routeIgnition coil 3—
W20OEM-A-13MAXXECUMINI-C1-F40.5no routeIgnition coil 4—
W21OEM-B-5MAXXECUMINI-C1-G30.5no routeInjector 1—
W22OEM-B-4MAXXECUMINI-C1-H10.5no routeInjector 2—
W23OEM-B-3MAXXECUMINI-C1-H20.5no routeInjector 3—
W24OEM-B-2MAXXECUMINI-C1-H30.5no routeInjector 4—
W25OEM-E-17MAXXECUMINI-C1-G20.5no routeFuel pump relay—
W26OEM-E-7MAXXECUMINI-C1-G10.5no routeMain relay control—
W27OEM-B-6RLY1-R-OUT0.5no routeVTEC solenoid—
W28SP-14V-1RLY1-R-IN0.5no routeRelay contact input (switched +12 V)—
W29SP-14V-1RLY1-R-COIL+0.5no routeRelay coil positive (switched +12 V)—
W30RLY1-R-COIL-MAXXECUMINI-C1-E10.5no routeRelay coil negative (ECU low-side driver)—
W31OEM-A-30MAXXECUMINI-C1-C30.5no routeMAP sensor—
W32OEM-B-8MAXXECUMINI-C1-C10.5no routeCoolant temp sensor—
W33OEM-E-1MAXXECUMINI-C1-C20.5no routeCoolant temp sensor 2—
W34OEM-A-18MAXXECUMINI-C1-B10.5no routeVehicle speed sensor—
W35OEM-B-11MAXXECUMINI-C1-B20.5no routeVTEC oil pressure switch—
W36OEM-E-11MAXXECUMINI-C1-E40.5no routeCAN H—
W37OEM-E-24MAXXECUMINI-C1-E30.5no routeCAN L—
W38OEM-A-21SP-5V-10.5no routeSensor voltage 1—
W39SP-5V-1SP-5V1-10.5no route——
W40SP-5V-1TPS-J-VCC0.5no route5V supply in—
W41TPS-J-SIGMAXXECUMINI-C1-C40.5no routeThrottle position signal—
W42TPS-J-GNDSP-0V-10.5no routeSensor ground—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit
connectorS2K-0609-ECU-AHondaS2000 2006–09 ECU plug A (P/N unknown)1.000ea
connectorS2K-0609-ECU-BHondaS2000 2006–09 ECU plug B (P/N unknown)1.000ea
connectorS2K-0609-ECU-DHondaS2000 2006–09 ECU plug D (P/N unknown)1.000ea
connectorS2K-0609-ECU-EHondaS2000 2006–09 ECU plug E (P/N unknown)1.000ea
connectorTPS-3WGeneric3-way throttle position sensor plug (match to your throttle body)1.000ea

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (8)

SeverityCodeSubjectMessage
errorREQUIRED_UNMAPPEDOEM-A-6Required OEM function "Cam position sensor (T2)" (trigger_in) is not connected to the new ECU.
warnLOAD_UNKNOWNMAXXECUMINI-C1-G1MAXXECUMINI-C1-G1 "GPO 2" drives OEM-E-7 Main relay control (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNMAXXECUMINI-C1-G2MAXXECUMINI-C1-G2 "GPO 1" drives OEM-E-17 Fuel pump relay (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNRLY1-R-OUTRLY1-R-OUT "Relay contact output (switched +12 V to load)" drives OEM-B-6 VTEC solenoid (load 1.0 A) but its current rating is unknown. Check the ECU manual.
infoPIN_UNSOURCEDTPS-J-GNDTPS-J-GND "Sensor ground" has no recorded source.
infoPIN_UNSOURCEDTPS-J-SIGTPS-J-SIG "Throttle position signal" has no recorded source.
infoPIN_UNSOURCEDTPS-J-VCCTPS-J-VCC "5V supply in" has no recorded source.
infoUNMAPPEDOEM36 optional OEM pins are not mapped: OEM-A-1 Knock sensor; OEM-A-10 A/F sensor heater; OEM-A-28 A/F sensor signal −; OEM-A-31 A/F sensor signal +; OEM-B-10 Alternator L signal; OEM-B-13 Alternator FR signal; OEM-B-15 Engine mount control solenoid; OEM-B-17 Intake air temp sensor; OEM-B-18 Alternator control; OEM-B-19 Throttle actuator command to throttle control module (SEFD); OEM-B-20 Throttle actuator command to throttle control module (SEDF); OEM-B-21 Evap canister purge valve; OEM-D-1 Cruise set switch; OEM-D-15 Throttle actuator relay; OEM-D-4 Cruise main switch; OEM-D-7 Cruise resume switch; OEM-D-8 Brake pedal position switch; OEM-D-9 Cruise clutch signal; OEM-E-12 Radiator fan control; OEM-E-13 Multiplex communication; OEM-E-14 Fuel tank pressure sensor; OEM-E-15 Electrical load detector; OEM-E-16 Power steering load detector; OEM-E-18 A/C clutch relay; OEM-E-19 Evap canister vent shut valve; OEM-E-20 Secondary O2 sensor; OEM-E-21 Secondary O2 heater; OEM-E-22 Brake pedal switch; OEM-E-25 Engine speed pulse (tacho); OEM-E-26 Vehicle speed output; OEM-E-27 Immobilizer code; OEM-E-28 A/C switch signal; OEM-E-29 Service check signal; OEM-E-30 Write enable signal; OEM-E-8 A/F sensor heater relay; OEM-E-9 Ignition signal

Accepted (6)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-A-20DBW removed: accelerator pedal dropped (its signal, 5 V supply and sensor ground are no longer needed).mapping-proposal
REQUIRED_UNMAPPEDOEM-A-23DBW removed: accelerator pedal dropped (its signal, 5 V supply and sensor ground are no longer needed).mapping-proposal
REQUIRED_UNMAPPEDOEM-A-25DBW removed: accelerator pedal dropped (its signal, 5 V supply and sensor ground are no longer needed).mapping-proposal
REQUIRED_UNMAPPEDOEM-A-26DBW removed: accelerator pedal dropped (its signal, 5 V supply and sensor ground are no longer needed).mapping-proposal
REQUIRED_UNMAPPEDOEM-E-4DBW removed: accelerator pedal dropped (its signal, 5 V supply and sensor ground are no longer needed).mapping-proposal
REQUIRED_UNMAPPEDOEM-E-5DBW removed: accelerator pedal dropped (its signal, 5 V supply and sensor ground are no longer needed).mapping-proposal

Notes

No notes.

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docAEM 30-6053 Series 2 Plug & Play EMS, 2006–2008 S2000 AP2 (original ECU pinout)https://documents.aemelectronics.com/techlibrary_30-6053_series_2_plug___play_ems.pdf—2026-10-05ecc8006f849f
4vendor_docBosch relay catalogue (mini ISO relays)https://www.bosch-ibusiness.com/media/downloads/kataloge/relay/2025_10_bosch_relay_catalogue.pdfarchive2026-10-0520344cff1ef3
4community_copyHonda S2000 Service Manual 2000–2008, Fuel and Emissions Systemshttps://www.s2000.wiki/view/images/7/7f/Service_Manual_2000-2008.pdfarchive2026-10-05a470cfc928e9
4vendor_docMaxxECU GEN1 pinout (MINI / STREET / SPORT / V1 / RACE / PRO)http://www.maxxecu.com/webhelp/wirings-maxxecu_pinout.htmlarchive2026-10-052e37b6814690
4vendor_docOmron G8V-RH-1C7T-R-DC12 high-current micro 280 automotive relay datasheethttps://www.alldatasheet.com/datasheet-pdf/pdf/333797/OMRON/G8V-RH-1C7T-R-DC12.html—2026-10-05764a0505a941
3vendor_docScienceofSpeed Link G4X ECU, S2000 2006–09 (product page)https://www.scienceofspeed.com/s2000-2000-09/scienceofspeed-link-g4x-ecu-s2000-2006-09-enpp-3822.htmlarchive2026-10-05643bc0efd6d7