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Honda NSX NA2 1997-2005 (C32B) → ECUMASTER EMU Black (auto)

Honda NSX NA2 1997-2005 (C32B) — ECUMASTER — EMU Black
⚠ 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.

Statusdraft · not yet verified: nobody has reported building and running this harness
Open errors5: read the Findings page before cutting any wire
Size of the job69 wires · 12 connectors · 0 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-13SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-C-1SP-14V-10.85☐☐☐☐☐☐☐
W3OEM-G-10SP-14V-10.85☐☐☐☐☐☐☐
W4OEM-G-2SP-14V-10.85☐☐☐☐☐☐☐
W5OEM-G-3SP-14V-10.85☐☐☐☐☐☐☐
W6OEM-G-9SP-14V-10.85☐☐☐☐☐☐☐
W7SP-14V-1EMUBLACK-Black-130.85☐☐☐☐☐☐☐
W8OEM-A-12SP-GND-10.85☐☐☐☐☐☐☐
W9OEM-A-25SP-GND-10.85☐☐☐☐☐☐☐
W10OEM-G-7SP-GND-10.85☐☐☐☐☐☐☐
W11OEM-G-8SP-GND-10.85☐☐☐☐☐☐☐
W12SP-GND-1EMUBLACK-Black-270.85☐☐☐☐☐☐☐
W13SP-GND-1EMUBLACK-Black-280.85☐☐☐☐☐☐☐
W14SP-GND-1EMUBLACK-Grey-170.85☐☐☐☐☐☐☐
W15SP-GND-1EMUBLACK-Grey-240.85☐☐☐☐☐☐☐
W16OEM-A-26SP-0V-10.5☐☐☐☐☐☐☐
W17OEM-B-13SP-0V-10.5☐☐☐☐☐☐☐
W18OEM-B-14SP-0V-10.5☐☐☐☐☐☐☐
W19OEM-B-15SP-0V-10.5☐☐☐☐☐☐☐
W20OEM-B-16SP-0V-10.5☐☐☐☐☐☐☐
W21OEM-B-9SP-0V-10.5☐☐☐☐☐☐☐
W22OEM-D-11SP-0V-10.5☐☐☐☐☐☐☐
W23OEM-F-15SP-0V-10.5☐☐☐☐☐☐☐
W24OEM-F-2SP-0V-10.5☐☐☐☐☐☐☐
W25SP-0V-1EMUBLACK-Black-290.5☐☐☐☐☐☐☐
W26SP-0V-1EMUBLACK-Black-380.5☐☐☐☐☐☐☐
W27SP-0V-1EMUBLACK-Black-390.5☐☐☐☐☐☐☐
W28OEM-D-10SP-5V1-10.5☐☐☐☐☐☐☐
W29OEM-F-1SP-5V1-10.5☐☐☐☐☐☐☐
W30SP-5V1-1EMUBLACK-Black-340.5☐☐☐☐☐☐☐
W31OEM-F-14EMUBLACK-Black-260.5☐☐☐☐☐☐☐
W32OEM-B-8EMUBLACK-Black-80.5☐☐☐☐☐☐☐
W33OEM-B-7EMUBLACK-Black-200.5☐☐☐☐☐☐☐
W34OEM-B-6EMUBLACK-Black-210.5☐☐☐☐☐☐☐
W35OEM-B-5EMUBLACK-Black-70.5☐☐☐☐☐☐☐
W36OEM-D-13EMUBLACK-Black-30.5☐☐☐☐☐☐☐
W37OEM-D-2EMUBLACK-Black-160.5☐☐☐☐☐☐☐
W38OEM-A-11EMUBLACK-Grey-80.5☐☐☐☐☐☐☐
W39OEM-A-24EMUBLACK-Grey-160.5☐☐☐☐☐☐☐
W40OEM-B-12EMUBLACK-Grey-90.5☐☐☐☐☐☐☐
W41OEM-B-11EMUBLACK-Black-140.5☐☐☐☐☐☐☐
W42OEM-B-10EMUBLACK-Black-10.5☐☐☐☐☐☐☐
W43OEM-B-2EMUBLACK-Grey-10.5☐☐☐☐☐☐☐
W44OEM-A-1EMUBLACK-Grey-70.5☐☐☐☐☐☐☐
W45OEM-A-2EMUBLACK-Grey-150.5☐☐☐☐☐☐☐
W46OEM-A-3EMUBLACK-Grey-230.5☐☐☐☐☐☐☐
W47OEM-A-14EMUBLACK-Grey-60.5☐☐☐☐☐☐☐
W48OEM-A-15EMUBLACK-Grey-140.5☐☐☐☐☐☐☐
W49OEM-A-16EMUBLACK-Grey-220.5☐☐☐☐☐☐☐
W50OEM-A-5EMUBLACK-Grey-210.5☐☐☐☐☐☐☐
W51OEM-F-19EMUBLACK-Grey-130.5☐☐☐☐☐☐☐
W52OEM-F-20EMUBLACK-Grey-50.5☐☐☐☐☐☐☐
W53OEM-D-9EMUBLACK-Black-310.5☐☐☐☐☐☐☐
W54OEM-F-13EMUBLACK-Black-180.5☐☐☐☐☐☐☐
W55OEM-F-12EMUBLACK-Black-40.5☐☐☐☐☐☐☐
W56OEM-D-12EMUBLACK-Black-170.5☐☐☐☐☐☐☐
W57OEM-D-7EMUBLACK-Black-50.5☐☐☐☐☐☐☐
W58OEM-F-4EMUBLACK-Grey-200.5☐☐☐☐☐☐☐
W59OEM-A-8EMUBLACK-Grey-120.5☐☐☐☐☐☐☐
W60OEM-A-10EMUBLACK-Grey-190.5☐☐☐☐☐☐☐
W61OEM-A-22EMUBLACK-Grey-40.5☐☐☐☐☐☐☐
W62OEM-D-16EMUBLACK-Black-300.5☐☐☐☐☐☐☐
W63OEM-D-17EMUBLACK-Black-350.5☐☐☐☐☐☐☐
W64OEM-D-18EMUBLACK-Black-370.5☐☐☐☐☐☐☐
W65OEM-D-19EMUBLACK-Black-90.5☐☐☐☐☐☐☐
W66OEM-D-8EMUBLACK-Black-320.5☐☐☐☐☐☐☐
W67OEM-C-7EMUBLACK-Black-100.5☐☐☐☐☐☐☐
W68OEM-F-16EMUBLACK-Black-230.5☐☐☐☐☐☐☐
W69OEM-F-6EMUBLACK-Black-360.5☐☐☐☐☐☐☐

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
1EMUBLACK-Black-13EMUBLACK-Black-29open (OL)+12 V supply must not touch sensor ground
2EMUBLACK-Black-13EMUBLACK-Black-26open (OL)+12 V supply must not touch 5 V sensor reference
3EMUBLACK-Black-13EMUBLACK-Black-34open (OL)+12 V supply must not touch 5 V sensor reference
4EMUBLACK-Black-27EMUBLACK-Black-13open (OL)power ground must not touch +12 V supply
5EMUBLACK-Black-27EMUBLACK-Black-26open (OL)power ground must not touch 5 V sensor reference
6EMUBLACK-Black-27EMUBLACK-Black-34open (OL)power ground must not touch 5 V sensor reference
7EMUBLACK-Black-29EMUBLACK-Black-26open (OL)sensor ground must not touch 5 V sensor reference
8EMUBLACK-Black-29EMUBLACK-Black-34open (OL)sensor ground 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

EMUBLACK-BlackEMUBLACK-GreyOEM-AOEM-BOEM-COEM-DOEM-FOEM-GSP-0VSP-14VSP-5V1SP-GND

Connectors

EMUBLACK-Black

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition coil #5—W42—0.5OEM-B-10———
10Switch #1 In—W67—0.5OEM-C-7———
11RS232 TXD————————
12CAN H————————
13Battery +12V—W7—0.85SP-14V-1———
14Ignition coil #4—W41—0.5OEM-B-11———
15EGT in #2————————
16Knock Sensor in #2—W37—0.5OEM-D-2———
17Analog In #3—W56—0.5OEM-D-12———
18TPS In—W54—0.5OEM-F-13———
19WBO Ip————————
2EGT in #1————————
20VSS In—W33—0.5OEM-B-7———
21Camsync In #1—W34—0.5OEM-B-6———
22WBO Rcal————————
23Switch #2 In—W68—0.5OEM-F-16———
24RS232 RXD————————
25CAN L————————
26+5V supply—W31—0.5OEM-F-14———
27Power Ground—W12—0.85SP-GND-1———
28Ecu Ground—W13—0.85SP-GND-1———
29Sensor Ground—W25—0.5SP-0V-1———
3Knock Sensor in #1—W36—0.5OEM-D-13———
30Analog In #4—W62—0.5OEM-D-16———
31Analog In #1—W53—0.5OEM-D-9———
32IAT In—W66—0.5OEM-D-8———
33WBO VGND————————
34+5V supply—W30—0.5SP-5V1-1———
35Analog In #5—W63—0.5OEM-D-17———
36Switch #3 In—W69—0.5OEM-F-6———
37Analog In #6—W64—0.5OEM-D-18———
38Sensor Ground—W26—0.5SP-0V-1———
39Sensor Ground—W27—0.5SP-0V-1———
4Analog In #2—W55—0.5OEM-F-12———
5CLT In—W57—0.5OEM-D-7———
6WBO Vs————————
7Camsync In #2—W35—0.5OEM-B-5———
8Primary trigger—W32—0.5OEM-B-8———
9Flex Fuel In—W65—0.5OEM-D-19———

EMUBLACK-Grey

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition coil #6—W43—0.5OEM-B-2———
10H-Bridge #1 Winding B————————
11H-Bridge #2 Winding B————————
12AUX 5—W59—0.5OEM-A-8———
13AUX 2 / Injector #8—W51—0.5OEM-F-19———
14Injector #5—W48—0.5OEM-A-15———
15Injector #2—W45—0.5OEM-A-2———
16Ignition coil #2—W39—0.5OEM-A-24———
17Power Ground—W14—0.85SP-GND-1———
18Ignition +12V————————
19WBO Heater—W60—0.5OEM-A-10———
2H-Bridge #1 Winding A————————
20AUX 4 / Tacho—W58—0.5OEM-F-4———
21AUX 1 / Injector #7—W50—0.5OEM-A-5———
22Injector #6—W49—0.5OEM-A-16———
23Injector #3—W46—0.5OEM-A-3———
24Power Ground—W15—0.85SP-GND-1———
3H-Bridge #2 Winding A————————
4AUX 6—W61—0.5OEM-A-22———
5AUX 3—W52—0.5OEM-F-20———
6Injector #4—W47—0.5OEM-A-14———
7Injector #1—W44—0.5OEM-A-1———
8Ignition coil #1—W38—0.5OEM-A-11———
9Ignition coil #3—W40—0.5OEM-B-12———

OEM-A

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector 1 (INJ1)—W44—0.5EMUBLACK-Grey-7———
10Rear secondary O2 heater (RSO2SHTC)—W60—0.5EMUBLACK-Grey-19———
11Ignition coil 1 (IGN COIL1)—W38—0.5EMUBLACK-Grey-8———
12Power ground (PG1)—W8—0.85SP-GND-1———
13ECM power source (IGP1)—W1—0.85SP-14V-1———
14Injector 4 (INJ4)—W47—0.5EMUBLACK-Grey-6———
15Injector 5 (INJ5)—W48—0.5EMUBLACK-Grey-14———
16Injector 6 (INJ6)—W49—0.5EMUBLACK-Grey-22———
17EVAP bypass solenoid (2WBS)————————
2Injector 2 (INJ2)—W45—0.5EMUBLACK-Grey-15———
20IAB control solenoid (IABCS)————————
21EVAP purge control solenoid (PCS)————————
22Front primary O2 heater (FPO2SHTC)—W61—0.5EMUBLACK-Grey-4———
23Rear primary O2 heater (RPO2SHTC)————————
24Ignition coil 2 (IGN COIL2)—W39—0.5EMUBLACK-Grey-16———
25Power ground (PG2)—W9—0.85SP-GND-1———
26Logic ground (LG1)—W16—0.5SP-0V-1———
3Injector 3 (INJ3)—W46—0.5EMUBLACK-Grey-23———
4EVAP canister vent shut valve (VSV)————————
5Fuel pump relay (FLR1)—W50—0.5EMUBLACK-Grey-21———
6EGR control solenoid (ESOL)————————
7Malfunction indicator lamp (MIL)————————
8A/C clutch relay (ACC)—W59—0.5EMUBLACK-Grey-12———
9Front secondary O2 heater (FSO2SHTC)————————

OEM-B

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1VTEC pressure switch front (VTP SWF)————————
10Ignition coil 5 (IGN COIL5)—W42—0.5EMUBLACK-Black-1———
11Ignition coil 4 (IGN COIL4)—W41—0.5EMUBLACK-Black-14———
12Ignition coil 3 (IGN COIL3)—W40—0.5EMUBLACK-Grey-9———
13Cylinder position sensor 2 return (CYP 2M)—W17—0.5SP-0V-1———
14Cylinder position sensor 1 return (CYP 1M)—W18—0.5SP-0V-1———
15Crank position sensor 2 return (CKP 2M)—W19—0.5SP-0V-1———
16Crank position sensor 1 return (CKP 1M)—W20—0.5SP-0V-1———
2Ignition coil 6 (IGN COIL6)—W43—0.5EMUBLACK-Grey-1———
3VTEC pressure switch rear (VTP SWR)————————
4Neutral switch (NT SW, M/T)————————
5Cylinder position sensor 2 + (CYP 2P)—W35—0.5EMUBLACK-Black-7———
6Cylinder position sensor 1 + (CYP 1P)—W34—0.5EMUBLACK-Black-21———
7Crank position sensor 2 + (CKP 2P)—W33—0.5EMUBLACK-Black-20———
8Crank position sensor 1 + (CKP 1P)—W32—0.5EMUBLACK-Black-8———
9Logic ground (LG2)—W21—0.5SP-0V-1———

OEM-C

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1ECM power source (IGP2)—W2—0.85SP-14V-1———
4Clutch switch (MTCLS, M/T)————————
6Starter switch (STS)————————
7Vehicle speed sensor (VSS)—W67—0.5EMUBLACK-Black-10———
8Engine speed pulse (NEP)————————

OEM-D

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Backup power (VBU)————————
10Sensor 5V supply (VCC2)—W28—0.5SP-5V1-1———
11Sensor ground (SG2)—W22—0.5SP-0V-1———
12Throttle position sensor (TPS)—W56—0.5EMUBLACK-Black-17———
13Knock sensor front (KSF)—W36—0.5EMUBLACK-Black-3———
16Front secondary O2 signal (O2S FS)—W62—0.5EMUBLACK-Black-30———
17Rear secondary O2 signal (O2S RS)—W63—0.5EMUBLACK-Black-35———
18Front primary O2 signal (O2S FP)—W64—0.5EMUBLACK-Black-37———
19Rear primary O2 signal (O2S RP)—W65—0.5EMUBLACK-Black-9———
2Knock sensor rear (KSR)—W37—0.5EMUBLACK-Black-16———
20EGR valve lift sensor (EGRL)————————
4K-line diagnostics————————
7Engine coolant temperature (ECT)—W57—0.5EMUBLACK-Black-5———
8Intake air temperature (IAT)—W66—0.5EMUBLACK-Black-32———
9MAP sensor—W53—0.5EMUBLACK-Black-31———

OEM-F

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Sensor 5V supply (VCC1)—W29—0.5SP-5V1-1———
12Accelerator pedal position 2 (AP2)—W55—0.5EMUBLACK-Black-4———
13Accelerator pedal position 1 (AP1)—W54—0.5EMUBLACK-Black-18———
14Accelerator pedal 5V supply (VCC3)—W31—0.5EMUBLACK-Black-26———
15Accelerator pedal ground (SG3)—W23—0.5SP-0V-1———
16Brake switch 1 (BKSW1)—W68—0.5EMUBLACK-Black-23———
19VTEC solenoid front (VT SOLF)—W51—0.5EMUBLACK-Grey-13———
2Sensor ground (SG1)—W24—0.5SP-0V-1———
20VTEC solenoid rear (VT SOLR)—W52—0.5EMUBLACK-Grey-5———
4Fuel pump relay 2 (FLR2)—W58—0.5EMUBLACK-Grey-20———
6Brake switch 2 (BKSW2)—W69—0.5EMUBLACK-Black-36———

OEM-G

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Throttle motor common power phases 2&4 (COM2)—W3—0.85SP-14V-1———
11Throttle motor phase 3 (PM3)————————
12Throttle motor phase 4 (PM4)————————
2Throttle motor power source 1 (IGM1)—W4—0.85SP-14V-1———
3Throttle motor power source 2 (IGM2)—W5—0.85SP-14V-1———
4Throttle motor phase 1 (PM1)————————
5Throttle motor phase 2 (PM2)————————
7Throttle motor ground 1 (PGM1)—W10—0.85SP-GND-1———
8Throttle motor ground 2 (PGM2)—W11—0.85SP-GND-1———
9Throttle motor common power phases 1&3 (COM1)—W6—0.85SP-14V-1———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W16—0.5OEM-A-26———
1——W17—0.5OEM-B-13———
1——W18—0.5OEM-B-14———
1——W19—0.5OEM-B-15———
1——W20—0.5OEM-B-16———
1——W21—0.5OEM-B-9———
1——W22—0.5OEM-D-11———
1——W23—0.5OEM-F-15———
1——W24—0.5OEM-F-2———
1——W25—0.5EMUBLACK-Black-29———
1——W26—0.5EMUBLACK-Black-38———
1——W27—0.5EMUBLACK-Black-39———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-A-13———
1——W2—0.85OEM-C-1———
1——W3—0.85OEM-G-10———
1——W4—0.85OEM-G-2———
1——W5—0.85OEM-G-3———
1——W6—0.85OEM-G-9———
1——W7—0.85EMUBLACK-Black-13———

SP-5V1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W28—0.5OEM-D-10———
1——W29—0.5OEM-F-1———
1——W30—0.5EMUBLACK-Black-34———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W8—0.85OEM-A-12———
1——W9—0.85OEM-A-25———
1——W10—0.85OEM-G-7———
1——W11—0.85OEM-G-8———
1——W12—0.85EMUBLACK-Black-27———
1——W13—0.85EMUBLACK-Black-28———
1——W14—0.85EMUBLACK-Grey-17———
1——W15—0.85EMUBLACK-Grey-24———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-A-1Injector 1 (INJ1)injector_outEMUBLACK-Grey-7Injector #1injector_outsingle_source
OEM-A-10Rear secondary O2 heater (RSO2SHTC)low_side_outEMUBLACK-Grey-19WBO Heaterlow_side_outsingle_source
OEM-A-11Ignition coil 1 (IGN COIL1)ignition_outEMUBLACK-Grey-8Ignition coil #1ignition_outsingle_source
OEM-A-12Power ground (PG1)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-A-13ECM power source (IGP1)power_inEMUBLACK-Black-13Battery +12Vpower_insingle_source
OEM-A-14Injector 4 (INJ4)injector_outEMUBLACK-Grey-6Injector #4injector_outsingle_source
OEM-A-15Injector 5 (INJ5)injector_outEMUBLACK-Grey-14Injector #5injector_outsingle_source
OEM-A-16Injector 6 (INJ6)injector_outEMUBLACK-Grey-22Injector #6injector_outsingle_source
OEM-A-17EVAP bypass solenoid (2WBS)low_side_out———single_source
OEM-A-2Injector 2 (INJ2)injector_outEMUBLACK-Grey-15Injector #2injector_outsingle_source
OEM-A-20IAB control solenoid (IABCS)low_side_out———single_source
OEM-A-21EVAP purge control solenoid (PCS)low_side_out———single_source
OEM-A-22Front primary O2 heater (FPO2SHTC)low_side_outEMUBLACK-Grey-4AUX 6low_side_outsingle_source
OEM-A-23Rear primary O2 heater (RPO2SHTC)low_side_out———single_source
OEM-A-24Ignition coil 2 (IGN COIL2)ignition_outEMUBLACK-Grey-16Ignition coil #2ignition_outsingle_source
OEM-A-25Power ground (PG2)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-A-26Logic ground (LG1)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-A-3Injector 3 (INJ3)injector_outEMUBLACK-Grey-23Injector #3injector_outsingle_source
OEM-A-4EVAP canister vent shut valve (VSV)low_side_out———single_source
OEM-A-5Fuel pump relay (FLR1)low_side_outEMUBLACK-Grey-21AUX 1 / Injector #7low_side_outsingle_source
OEM-A-6EGR control solenoid (ESOL)low_side_out———single_source
OEM-A-7Malfunction indicator lamp (MIL)low_side_out———single_source
OEM-A-8A/C clutch relay (ACC)low_side_outEMUBLACK-Grey-12AUX 5low_side_outsingle_source
OEM-A-9Front secondary O2 heater (FSO2SHTC)low_side_out———single_source
OEM-B-1VTEC pressure switch front (VTP SWF)digital_in———single_source
OEM-B-10Ignition coil 5 (IGN COIL5)ignition_outEMUBLACK-Black-1Ignition coil #5ignition_outsingle_source
OEM-B-11Ignition coil 4 (IGN COIL4)ignition_outEMUBLACK-Black-14Ignition coil #4ignition_outsingle_source
OEM-B-12Ignition coil 3 (IGN COIL3)ignition_outEMUBLACK-Grey-9Ignition coil #3ignition_outsingle_source
OEM-B-13Cylinder position sensor 2 return (CYP 2M)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-B-14Cylinder position sensor 1 return (CYP 1M)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-B-15Crank position sensor 2 return (CKP 2M)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-B-16Crank position sensor 1 return (CKP 1M)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-B-2Ignition coil 6 (IGN COIL6)ignition_outEMUBLACK-Grey-1Ignition coil #6ignition_outsingle_source
OEM-B-3VTEC pressure switch rear (VTP SWR)digital_in———single_source
OEM-B-4Neutral switch (NT SW, M/T)digital_in———single_source
OEM-B-5Cylinder position sensor 2 + (CYP 2P)trigger_inEMUBLACK-Black-7Camsync In #2trigger_insingle_source
OEM-B-6Cylinder position sensor 1 + (CYP 1P)trigger_inEMUBLACK-Black-21Camsync In #1trigger_insingle_source
OEM-B-7Crank position sensor 2 + (CKP 2P)trigger_inEMUBLACK-Black-20VSS Indigital_insingle_source
OEM-B-8Crank position sensor 1 + (CKP 1P)trigger_inEMUBLACK-Black-8Primary triggertrigger_insingle_source
OEM-B-9Logic ground (LG2)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-C-1ECM power source (IGP2)power_inEMUBLACK-Black-13Battery +12Vpower_insingle_source
OEM-C-4Clutch switch (MTCLS, M/T)digital_in———single_source
OEM-C-6Starter switch (STS)digital_in———single_source
OEM-C-7Vehicle speed sensor (VSS)digital_inEMUBLACK-Black-10Switch #1 Indigital_insingle_source
OEM-C-8Engine speed pulse (NEP)tacho_out———single_source
OEM-D-1Backup power (VBU)power_in———single_source
OEM-D-10Sensor 5V supply (VCC2)vrefEMUBLACK-Black-34+5V supplyvrefsingle_source
OEM-D-11Sensor ground (SG2)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-D-12Throttle position sensor (TPS)analog_inEMUBLACK-Black-17Analog In #3analog_insingle_source
OEM-D-13Knock sensor front (KSF)knock_inEMUBLACK-Black-3Knock Sensor in #1knock_insingle_source
OEM-D-16Front secondary O2 signal (O2S FS)lambda_nb_inEMUBLACK-Black-30Analog In #4analog_insingle_source
OEM-D-17Rear secondary O2 signal (O2S RS)lambda_nb_inEMUBLACK-Black-35Analog In #5analog_insingle_source
OEM-D-18Front primary O2 signal (O2S FP)lambda_nb_inEMUBLACK-Black-37Analog In #6analog_insingle_source
OEM-D-19Rear primary O2 signal (O2S RP)lambda_nb_inEMUBLACK-Black-9Flex Fuel Inanalog_insingle_source
OEM-D-2Knock sensor rear (KSR)knock_inEMUBLACK-Black-16Knock Sensor in #2knock_insingle_source
OEM-D-20EGR valve lift sensor (EGRL)analog_in———single_source
OEM-D-4K-line diagnosticsserial———single_source
OEM-D-7Engine coolant temperature (ECT)temp_inEMUBLACK-Black-5CLT Intemp_insingle_source
OEM-D-8Intake air temperature (IAT)temp_inEMUBLACK-Black-32IAT Intemp_insingle_source
OEM-D-9MAP sensoranalog_inEMUBLACK-Black-31Analog In #1analog_insingle_source
OEM-F-1Sensor 5V supply (VCC1)vrefEMUBLACK-Black-34+5V supplyvrefsingle_source
OEM-F-12Accelerator pedal position 2 (AP2)analog_inEMUBLACK-Black-4Analog In #2analog_insingle_source
OEM-F-13Accelerator pedal position 1 (AP1)analog_inEMUBLACK-Black-18TPS Inanalog_insingle_source
OEM-F-14Accelerator pedal 5V supply (VCC3)vrefEMUBLACK-Black-26+5V supplyvrefsingle_source
OEM-F-15Accelerator pedal ground (SG3)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-F-16Brake switch 1 (BKSW1)digital_inEMUBLACK-Black-23Switch #2 Indigital_insingle_source
OEM-F-19VTEC solenoid front (VT SOLF)low_side_outEMUBLACK-Grey-13AUX 2 / Injector #8low_side_outsingle_source
OEM-F-2Sensor ground (SG1)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-F-20VTEC solenoid rear (VT SOLR)low_side_outEMUBLACK-Grey-5AUX 3low_side_outsingle_source
OEM-F-4Fuel pump relay 2 (FLR2)low_side_outEMUBLACK-Grey-20AUX 4 / Tacholow_side_outsingle_source
OEM-F-6Brake switch 2 (BKSW2)digital_inEMUBLACK-Black-36Switch #3 Indigital_insingle_source
OEM-G-10Throttle motor common power phases 2&4 (COM2)power_inEMUBLACK-Black-13Battery +12Vpower_insingle_source
OEM-G-11Throttle motor phase 3 (PM3)hbridge_out———single_source
OEM-G-12Throttle motor phase 4 (PM4)hbridge_out———single_source
OEM-G-2Throttle motor power source 1 (IGM1)power_inEMUBLACK-Black-13Battery +12Vpower_insingle_source
OEM-G-3Throttle motor power source 2 (IGM2)power_inEMUBLACK-Black-13Battery +12Vpower_insingle_source
OEM-G-4Throttle motor phase 1 (PM1)hbridge_out———single_source
OEM-G-5Throttle motor phase 2 (PM2)hbridge_out———single_source
OEM-G-7Throttle motor ground 1 (PGM1)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-G-8Throttle motor ground 2 (PGM2)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-G-9Throttle motor common power phases 1&3 (COM1)power_inEMUBLACK-Black-13Battery +12Vpower_insingle_source

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-A-13SP-14V-10.85no routeECM power source (IGP1)—
W2OEM-C-1SP-14V-10.85no routeECM power source (IGP2)—
W3OEM-G-10SP-14V-10.85no routeThrottle motor common power phases 2&4 (COM2)—
W4OEM-G-2SP-14V-10.85no routeThrottle motor power source 1 (IGM1)—
W5OEM-G-3SP-14V-10.85no routeThrottle motor power source 2 (IGM2)—
W6OEM-G-9SP-14V-10.85no routeThrottle motor common power phases 1&3 (COM1)—
W7SP-14V-1EMUBLACK-Black-130.85no routeBattery +12V—
W8OEM-A-12SP-GND-10.85no routePower ground (PG1)—
W9OEM-A-25SP-GND-10.85no routePower ground (PG2)—
W10OEM-G-7SP-GND-10.85no routeThrottle motor ground 1 (PGM1)—
W11OEM-G-8SP-GND-10.85no routeThrottle motor ground 2 (PGM2)—
W12SP-GND-1EMUBLACK-Black-270.85no routePower Ground—
W13SP-GND-1EMUBLACK-Black-280.85no routeEcu Ground—
W14SP-GND-1EMUBLACK-Grey-170.85no routePower Ground—
W15SP-GND-1EMUBLACK-Grey-240.85no routePower Ground—
W16OEM-A-26SP-0V-10.5no routeLogic ground (LG1)—
W17OEM-B-13SP-0V-10.5no routeCylinder position sensor 2 return (CYP 2M)—
W18OEM-B-14SP-0V-10.5no routeCylinder position sensor 1 return (CYP 1M)—
W19OEM-B-15SP-0V-10.5no routeCrank position sensor 2 return (CKP 2M)—
W20OEM-B-16SP-0V-10.5no routeCrank position sensor 1 return (CKP 1M)—
W21OEM-B-9SP-0V-10.5no routeLogic ground (LG2)—
W22OEM-D-11SP-0V-10.5no routeSensor ground (SG2)—
W23OEM-F-15SP-0V-10.5no routeAccelerator pedal ground (SG3)—
W24OEM-F-2SP-0V-10.5no routeSensor ground (SG1)—
W25SP-0V-1EMUBLACK-Black-290.5no routeSensor Ground—
W26SP-0V-1EMUBLACK-Black-380.5no routeSensor Ground—
W27SP-0V-1EMUBLACK-Black-390.5no routeSensor Ground—
W28OEM-D-10SP-5V1-10.5no routeSensor 5V supply (VCC2)—
W29OEM-F-1SP-5V1-10.5no routeSensor 5V supply (VCC1)—
W30SP-5V1-1EMUBLACK-Black-340.5no route+5V supply—
W31OEM-F-14EMUBLACK-Black-260.5no routeAccelerator pedal 5V supply (VCC3)—
W32OEM-B-8EMUBLACK-Black-80.5no routeCrank position sensor 1 + (CKP 1P)—
W33OEM-B-7EMUBLACK-Black-200.5no routeCrank position sensor 2 + (CKP 2P)—
W34OEM-B-6EMUBLACK-Black-210.5no routeCylinder position sensor 1 + (CYP 1P)—
W35OEM-B-5EMUBLACK-Black-70.5no routeCylinder position sensor 2 + (CYP 2P)—
W36OEM-D-13EMUBLACK-Black-30.5no routeKnock sensor front (KSF)—
W37OEM-D-2EMUBLACK-Black-160.5no routeKnock sensor rear (KSR)—
W38OEM-A-11EMUBLACK-Grey-80.5no routeIgnition coil 1 (IGN COIL1)—
W39OEM-A-24EMUBLACK-Grey-160.5no routeIgnition coil 2 (IGN COIL2)—
W40OEM-B-12EMUBLACK-Grey-90.5no routeIgnition coil 3 (IGN COIL3)—
W41OEM-B-11EMUBLACK-Black-140.5no routeIgnition coil 4 (IGN COIL4)—
W42OEM-B-10EMUBLACK-Black-10.5no routeIgnition coil 5 (IGN COIL5)—
W43OEM-B-2EMUBLACK-Grey-10.5no routeIgnition coil 6 (IGN COIL6)—
W44OEM-A-1EMUBLACK-Grey-70.5no routeInjector 1 (INJ1)—
W45OEM-A-2EMUBLACK-Grey-150.5no routeInjector 2 (INJ2)—
W46OEM-A-3EMUBLACK-Grey-230.5no routeInjector 3 (INJ3)—
W47OEM-A-14EMUBLACK-Grey-60.5no routeInjector 4 (INJ4)—
W48OEM-A-15EMUBLACK-Grey-140.5no routeInjector 5 (INJ5)—
W49OEM-A-16EMUBLACK-Grey-220.5no routeInjector 6 (INJ6)—
W50OEM-A-5EMUBLACK-Grey-210.5no routeFuel pump relay (FLR1)—
W51OEM-F-19EMUBLACK-Grey-130.5no routeVTEC solenoid front (VT SOLF)—
W52OEM-F-20EMUBLACK-Grey-50.5no routeVTEC solenoid rear (VT SOLR)—
W53OEM-D-9EMUBLACK-Black-310.5no routeMAP sensor—
W54OEM-F-13EMUBLACK-Black-180.5no routeAccelerator pedal position 1 (AP1)—
W55OEM-F-12EMUBLACK-Black-40.5no routeAccelerator pedal position 2 (AP2)—
W56OEM-D-12EMUBLACK-Black-170.5no routeThrottle position sensor (TPS)—
W57OEM-D-7EMUBLACK-Black-50.5no routeEngine coolant temperature (ECT)—
W58OEM-F-4EMUBLACK-Grey-200.5no routeFuel pump relay 2 (FLR2)—
W59OEM-A-8EMUBLACK-Grey-120.5no routeA/C clutch relay (ACC)—
W60OEM-A-10EMUBLACK-Grey-190.5no routeRear secondary O2 heater (RSO2SHTC)—
W61OEM-A-22EMUBLACK-Grey-40.5no routeFront primary O2 heater (FPO2SHTC)—
W62OEM-D-16EMUBLACK-Black-300.5no routeFront secondary O2 signal (O2S FS)—
W63OEM-D-17EMUBLACK-Black-350.5no routeRear secondary O2 signal (O2S RS)—
W64OEM-D-18EMUBLACK-Black-370.5no routeFront primary O2 signal (O2S FP)—
W65OEM-D-19EMUBLACK-Black-90.5no routeRear primary O2 signal (O2S RP)—
W66OEM-D-8EMUBLACK-Black-320.5no routeIntake air temperature (IAT)—
W67OEM-C-7EMUBLACK-Black-100.5no routeVehicle speed sensor (VSS)—
W68OEM-F-16EMUBLACK-Black-230.5no routeBrake switch 1 (BKSW1)—
W69OEM-F-6EMUBLACK-Black-360.5no routeBrake switch 2 (BKSW2)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (7)

SeverityCodeSubjectMessage
errorDBW_SENSOR_INPUTtpsOnly 0 throttle-position track(s) found. An electronic throttle needs two (main and sub) so the ECU can cross-check them.
errorREQUIRED_UNMAPPEDOEM-G-11Required OEM function "Throttle motor phase 3 (PM3)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-G-12Required OEM function "Throttle motor phase 4 (PM4)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-G-4Required OEM function "Throttle motor phase 1 (PM1)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-G-5Required OEM function "Throttle motor phase 2 (PM2)" (hbridge_out) is not connected to the new ECU.
warnNET_FAMILYOEM-B-7 ↔ EMUBLACK-Black-20OEM-B-7 "Crank position sensor 2 + (CKP 2P)" [trigger_in] is wired to EMUBLACK-Black-20 "VSS In" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot.
infoUNMAPPEDOEM16 optional OEM pins are not mapped: OEM-A-17 EVAP bypass solenoid (2WBS); OEM-A-20 IAB control solenoid (IABCS); OEM-A-21 EVAP purge control solenoid (PCS); OEM-A-23 Rear primary O2 heater (RPO2SHTC); OEM-A-4 EVAP canister vent shut valve (VSV); OEM-A-6 EGR control solenoid (ESOL); OEM-A-7 Malfunction indicator lamp (MIL); OEM-A-9 Front secondary O2 heater (FSO2SHTC); OEM-B-1 VTEC pressure switch front (VTP SWF); OEM-B-3 VTEC pressure switch rear (VTP SWR); OEM-B-4 Neutral switch (NT SW, M/T); OEM-C-4 Clutch switch (MTCLS, M/T); OEM-C-6 Starter switch (STS); OEM-C-8 Engine speed pulse (NEP); OEM-D-20 EGR valve lift sensor (EGRL); OEM-D-4 K-line diagnostics

Accepted (1)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-D-1Battery-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 Honda C32B not found in the ECU's docs (No C32B (NSX) trigger named.) - This car has Honda Type 1A (1997+) immobilizer; needs a delete/bypass Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - OEM-G 4: Throttle motor phase 1 (PM1): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-G 5: Throttle motor phase 2 (PM2): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-G 11: Throttle motor phase 3 (PM3): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-G 12: Throttle motor phase 4 (PM4): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand Not wired: - OEM-D 1: Backup power (VBU): ECUMASTER EMU Black has no battery-constant input; not needed - OEM-A 23: Rear primary O2 heater (RPO2SHTC): no free heater_low_side/low_side/relay_control/ls_hs/injector on ECUMASTER EMU Black - OEM-A 9: Front secondary O2 heater (FSO2SHTC): no free heater_low_side/low_side/relay_control/ls_hs/injector on ECUMASTER EMU Black - OEM-A 17: EVAP bypass solenoid (2WBS): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-A 20: IAB control solenoid (IABCS): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-A 21: EVAP purge control solenoid (PCS): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-A 4: EVAP canister vent shut valve (VSV): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-A 6: EGR control solenoid (ESOL): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-A 7: Malfunction indicator lamp (MIL): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-C 8: Engine speed pulse (NEP): no free tacho/frequency_out/low_side/ls_hs on ECUMASTER EMU Black - OEM-D 20: EGR valve lift sensor (EGRL): no free analog_0_5 on ECUMASTER EMU Black - OEM-B 1: VTEC pressure switch front (VTP SWF): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B 3: VTEC pressure switch rear (VTP SWR): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B 4: Neutral switch (NT SW, M/T): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-C 4: Clutch switch (MTCLS, M/T): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-C 6: Starter switch (STS): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-D 4: K-line diagnostics: no free k_line on ECUMASTER EMU Black - EMUBLACK-Grey 18: Ignition +12V: not fed (the stock ECU has no ignition-sense pin); feed it from a switched-ignition source

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_doc1997-2005 Acura NSX Service Manual §11 (PGM-FI), ECM terminal arrangementhttps://www.manualslib.com/manual/1540331/Acura-Nsx-1997.html———
4vendor_docECUMASTER EMU Black — pinout (Black 39-pin / Grey 24-pin)https://www.ecumaster.com/wp/wp-content/uploads/2020/05/EMU_Black_pinout.pdfarchive2026-10-05096b2b4df1bd