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Toyota Supra A80 1997-2002 JDM (2JZ-GTE VVT-i, single-turbo) → ECUMASTER EMU Black (auto)

Toyota Supra A80 1997-2002 JDM (2JZ-GTE VVT-i, single-turbo) — 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 errors3: read the Findings page before cutting any wire
Size of the job55 wires · 11 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-B78-16SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-B78-7SP-14V-10.85☐☐☐☐☐☐☐
W3OEM-B78-8SP-14V-10.85☐☐☐☐☐☐☐
W4SP-14V-1EMUBLACK-Black-130.85☐☐☐☐☐☐☐
W5OEM-B74-21SP-GND-10.85☐☐☐☐☐☐☐
W6OEM-B74-31SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-B74-9SP-GND-10.85☐☐☐☐☐☐☐
W8OEM-B75-17SP-GND-10.85☐☐☐☐☐☐☐
W9SP-GND-1EMUBLACK-Black-270.85☐☐☐☐☐☐☐
W10SP-GND-1EMUBLACK-Black-280.85☐☐☐☐☐☐☐
W11SP-GND-1EMUBLACK-Grey-170.85☐☐☐☐☐☐☐
W12SP-GND-1EMUBLACK-Grey-240.85☐☐☐☐☐☐☐
W13OEM-B74-22SP-0V-10.5☐☐☐☐☐☐☐
W14OEM-B75-18SP-0V-10.5☐☐☐☐☐☐☐
W15OEM-B75-19SP-0V-10.5☐☐☐☐☐☐☐
W16OEM-B78-22SP-0V-10.5☐☐☐☐☐☐☐
W17SP-0V-1EMUBLACK-Black-290.5☐☐☐☐☐☐☐
W18SP-0V-1EMUBLACK-Black-380.5☐☐☐☐☐☐☐
W19SP-0V-1EMUBLACK-Black-390.5☐☐☐☐☐☐☐
W20OEM-B75-2EMUBLACK-Black-260.5☐☐☐☐☐☐☐
W21OEM-B74-23EMUBLACK-Black-80.5☐☐☐☐☐☐☐
W22OEM-B74-10EMUBLACK-Black-210.5☐☐☐☐☐☐☐
W23OEM-B74-28EMUBLACK-Black-30.5☐☐☐☐☐☐☐
W24OEM-B74-27EMUBLACK-Black-160.5☐☐☐☐☐☐☐
W25OEM-B74-11EMUBLACK-Grey-80.5☐☐☐☐☐☐☐
W26OEM-B74-12EMUBLACK-Grey-160.5☐☐☐☐☐☐☐
W27OEM-B74-13EMUBLACK-Grey-90.5☐☐☐☐☐☐☐
W28OEM-B75-5EMUBLACK-Grey-70.5☐☐☐☐☐☐☐
W29OEM-B75-6EMUBLACK-Grey-150.5☐☐☐☐☐☐☐
W30OEM-B74-1EMUBLACK-Grey-230.5☐☐☐☐☐☐☐
W31OEM-B74-2EMUBLACK-Grey-60.5☐☐☐☐☐☐☐
W32OEM-B74-3EMUBLACK-Grey-140.5☐☐☐☐☐☐☐
W33OEM-B74-4EMUBLACK-Grey-220.5☐☐☐☐☐☐☐
W34OEM-B78-9EMUBLACK-Grey-180.5☐☐☐☐☐☐☐
W35OEM-B74-17EMUBLACK-Grey-210.5☐☐☐☐☐☐☐
W36OEM-B74-18EMUBLACK-Grey-130.5☐☐☐☐☐☐☐
W37OEM-B74-19EMUBLACK-Grey-50.5☐☐☐☐☐☐☐
W38OEM-B74-20EMUBLACK-Grey-200.5☐☐☐☐☐☐☐
W39OEM-B75-9EMUBLACK-Black-310.5☐☐☐☐☐☐☐
W40OEM-B75-15EMUBLACK-Black-180.5☐☐☐☐☐☐☐
W41OEM-B75-23EMUBLACK-Black-40.5☐☐☐☐☐☐☐
W42OEM-B75-16EMUBLACK-Black-170.5☐☐☐☐☐☐☐
W43OEM-B75-24EMUBLACK-Black-300.5☐☐☐☐☐☐☐
W44OEM-B75-14EMUBLACK-Black-50.5☐☐☐☐☐☐☐
W45OEM-B77-13EMUBLACK-Grey-120.5☐☐☐☐☐☐☐
W46OEM-B78-10EMUBLACK-Grey-40.5☐☐☐☐☐☐☐
W47OEM-B75-4EMUBLACK-Grey-190.5☐☐☐☐☐☐☐
W48OEM-B75-10EMUBLACK-Black-350.5☐☐☐☐☐☐☐
W49OEM-B75-12EMUBLACK-Black-370.5☐☐☐☐☐☐☐
W50OEM-B75-22EMUBLACK-Black-320.5☐☐☐☐☐☐☐
W51OEM-B76-17EMUBLACK-Black-90.5☐☐☐☐☐☐☐
W52OEM-B77-25EMUBLACK-Black-200.5☐☐☐☐☐☐☐
W53OEM-B76-11EMUBLACK-Black-100.5☐☐☐☐☐☐☐
W54OEM-B76-5EMUBLACK-Black-230.5☐☐☐☐☐☐☐
W55OEM-B74-25EMUBLACK-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-26EMUBLACK-Black-13open (OL)5 V sensor reference must not touch +12 V supply
2EMUBLACK-Black-27EMUBLACK-Black-13open (OL)power ground must not touch +12 V supply
3EMUBLACK-Black-27EMUBLACK-Black-26open (OL)power ground must not touch 5 V sensor reference
4EMUBLACK-Black-29EMUBLACK-Black-13open (OL)sensor ground must not touch +12 V supply
5EMUBLACK-Black-29EMUBLACK-Black-26open (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-B74OEM-B75OEM-B76OEM-B77OEM-B78OEM-B79SP-0VSP-14VSP-GND

Connectors

EMUBLACK-Black

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition coil #5————————
10Switch #1 In—W53—0.5OEM-B76-11———
11RS232 TXD————————
12CAN H————————
13Battery +12V—W4—0.85SP-14V-1———
14Ignition coil #4————————
15EGT in #2————————
16Knock Sensor in #2—W24—0.5OEM-B74-27———
17Analog In #3—W42—0.5OEM-B75-16———
18TPS In—W40—0.5OEM-B75-15———
19WBO Ip————————
2EGT in #1————————
20VSS In—W52—0.5OEM-B77-25———
21Camsync In #1—W22—0.5OEM-B74-10———
22WBO Rcal————————
23Switch #2 In—W54—0.5OEM-B76-5———
24RS232 RXD————————
25CAN L————————
26+5V supply—W20—0.5OEM-B75-2———
27Power Ground—W9—0.85SP-GND-1———
28Ecu Ground—W10—0.85SP-GND-1———
29Sensor Ground—W17—0.5SP-0V-1———
3Knock Sensor in #1—W23—0.5OEM-B74-28———
30Analog In #4—W43—0.5OEM-B75-24———
31Analog In #1—W39—0.5OEM-B75-9———
32IAT In—W50—0.5OEM-B75-22———
33WBO VGND————————
34+5V supply————————
35Analog In #5—W48—0.5OEM-B75-10———
36Switch #3 In—W55—0.5OEM-B74-25———
37Analog In #6—W49—0.5OEM-B75-12———
38Sensor Ground—W18—0.5SP-0V-1———
39Sensor Ground—W19—0.5SP-0V-1———
4Analog In #2—W41—0.5OEM-B75-23———
5CLT In—W44—0.5OEM-B75-14———
6WBO Vs————————
7Camsync In #2————————
8Primary trigger—W21—0.5OEM-B74-23———
9Flex Fuel In—W51—0.5OEM-B76-17———

EMUBLACK-Grey

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition coil #6————————
10H-Bridge #1 Winding B————————
11H-Bridge #2 Winding B————————
12AUX 5—W45—0.5OEM-B77-13———
13AUX 2 / Injector #8—W36—0.5OEM-B74-18———
14Injector #5—W32—0.5OEM-B74-3———
15Injector #2—W29—0.5OEM-B75-6———
16Ignition coil #2—W26—0.5OEM-B74-12———
17Power Ground—W11—0.85SP-GND-1———
18Ignition +12V—W34—0.5OEM-B78-9———
19WBO Heater—W47—0.5OEM-B75-4———
2H-Bridge #1 Winding A————————
20AUX 4 / Tacho—W38—0.5OEM-B74-20———
21AUX 1 / Injector #7—W35—0.5OEM-B74-17———
22Injector #6—W33—0.5OEM-B74-4———
23Injector #3—W30—0.5OEM-B74-1———
24Power Ground—W12—0.85SP-GND-1———
3H-Bridge #2 Winding A————————
4AUX 6—W46—0.5OEM-B78-10———
5AUX 3—W37—0.5OEM-B74-19———
6Injector #4—W31—0.5OEM-B74-2———
7Injector #1—W28—0.5OEM-B75-5———
8Ignition coil #1—W25—0.5OEM-B74-11———
9Ignition coil #3—W27—0.5OEM-B74-13———

OEM-B74

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector 3 (#30)—W30—0.5EMUBLACK-Grey-23———
10Cam position (G2)—W22—0.5EMUBLACK-Black-21———
11Ignition 1 (IGT, cyl 1&6)—W25—0.5EMUBLACK-Grey-8———
12Ignition 2 (IGT2, cyl 5&2)—W26—0.5EMUBLACK-Grey-16———
13Ignition 3 (IGT3, cyl 3&4)—W27—0.5EMUBLACK-Grey-9———
15Wastegate VSV (PMC)————————
17VVT-i OCV - (OCV-)—W35—0.5EMUBLACK-Grey-21———
18VVT-i OCV + (OCV+)—W36—0.5EMUBLACK-Grey-13———
19ETCS-i clutch - (CL-)—W37—0.5EMUBLACK-Grey-5———
2Injector 4 (#40)—W31—0.5EMUBLACK-Grey-6———
20ETCS-i clutch + (CL+)—W38—0.5EMUBLACK-Grey-20———
21Power ground (E01)—W5—0.85SP-GND-1———
22Crank/cam sensor return (NE-)—W13—0.5SP-0V-1———
23Crank position (NE+)—W21—0.5EMUBLACK-Black-8———
24Neutral/park switch (NSW)————————
25Igniter verification (IGF)—W55—0.5EMUBLACK-Black-36———
27Knock sensor 2 (KNK2, rear)—W24—0.5EMUBLACK-Black-16———
28Knock sensor 1 (KNK1, front)—W23—0.5EMUBLACK-Black-3———
3Injector 5 (#50)—W32—0.5EMUBLACK-Grey-14———
30ETCS-i motor shield (GEO1)————————
31Power ground (E02)—W6—0.85SP-GND-1———
4Injector 6 (#60)—W33—0.5EMUBLACK-Grey-22———
5Intake air bypass VSV (VSV1)————————
7ETCS-i motor - (M-)————————
8ETCS-i motor + (M+)————————
9ETCS-i ground (ME01)—W7—0.85SP-GND-1———

OEM-B75

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Mass air flow (VG)—W48—0.5EMUBLACK-Black-35———
12O2 sensor (OX)—W49—0.5EMUBLACK-Black-37———
14Coolant temperature (THW)—W44—0.5EMUBLACK-Black-5———
15Accelerator pedal 1 (VPA)—W40—0.5EMUBLACK-Black-18———
16Accelerator pedal 2 (VPA2)—W42—0.5EMUBLACK-Black-17———
17Power ground (E1)—W8—0.85SP-GND-1———
18Sensor ground (E2)—W14—0.5SP-0V-1———
19MAF ground (EVG)—W15—0.5SP-0V-1———
2Sensor power (VC)—W20—0.5EMUBLACK-Black-26———
20A/T 2nd-gear indicator (2)————————
21A/T 1st-gear indicator (L)————————
22Intake air temperature (THA)—W50—0.5EMUBLACK-Black-32———
23Throttle position 1 (VTA)—W41—0.5EMUBLACK-Black-4———
24Throttle position 2 (VTA2)—W43—0.5EMUBLACK-Black-30———
3Exhaust gas control VSV (VSV2)————————
4O2 sensor heater (HT)—W47—0.5EMUBLACK-Grey-19———
5Injector 1 (#10)—W28—0.5EMUBLACK-Grey-7———
6Injector 2 (#20)—W29—0.5EMUBLACK-Grey-15———
7EVAP purge VSV (PRG)————————
8Main oil pressure switch (MOPS)————————
9Manifold pressure (PIM)—W39—0.5EMUBLACK-Black-31———

OEM-B76

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1A/T shift solenoid 1 (S1)————————
10OD direct-clutch speed (NCO-)————————
11No.2 speed sensor return (SP2-)—W53—0.5EMUBLACK-Black-10———
12Exhaust bypass VSV (VSV3)————————
13A/T lock-up solenoid - (SLU-)————————
14A/T accumulator solenoid - (SLN-)————————
15A/T line-pressure solenoid - (SLT-)————————
16Fuel pressure-up VSV (FPU)————————
17A/T oil temperature (OIL)—W51—0.5EMUBLACK-Black-9———
2A/T shift solenoid 2 (S2)————————
3A/T shift solenoid 3 (S3)————————
4OD direct-clutch speed (NCO+)————————
5No.2 speed sensor (SP2+)—W54—0.5EMUBLACK-Black-23———
6A/T shift solenoid 4 (S4)————————
7A/T lock-up solenoid + (SLU+)————————
8A/T accumulator solenoid + (SLN+)————————
9A/T line-pressure solenoid + (SLT+)————————

OEM-B77

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1A/C request (AC)————————
13A/C clutch relay (ACMG)—W45—0.5EMUBLACK-Grey-12———
14A/T shift down (SFTD)————————
16A/T reverse indicator (R)————————
18Rear right wheel speed (RRO)————————
19Rear left wheel speed (RLO)————————
2Starter signal (STA)————————
20Tachometer output (TACH)————————
21ABS active (ABS)————————
25No.1 speed sensor (SPD)—W52—0.5EMUBLACK-Black-20———
26Electrical load sense (ELS)————————
27Road speed (RSPD)————————
4A/T shift up (SFTU)————————
5Diagnostic/timing check (TC)————————
6Stop light switch (STP)————————
7A/T manual position (3)————————

OEM-B78

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Battery constant (BATT)————————
10EFI main relay control (M-REL)—W46—0.5EMUBLACK-Grey-4———
11Serial diagnostic (SIL)————————
16EFI main relay power (+B)—W1—0.85SP-14V-1———
2TRAC snow-mode light (SNOW)————————
22Switch ground (EC)—W16—0.5SP-0V-1———
3TRAC snow-mode switch (SNWI)————————
4Fuel pump diagnostic (DI)————————
5Fuel pump control (FPC)————————
6Check-engine light (W)————————
7ETCS-i power (+BM)—W2—0.85SP-14V-1———
8EFI main relay power (+B2)—W3—0.85SP-14V-1———
9Ignition switch (IGSW)—W34—0.5EMUBLACK-Grey-18———

OEM-B79

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1TRAC enable light (IND)————————
14TRAC active light (CIND)————————
17A/T meter LCD (LPO3)————————
18A/T meter LCD (SPTL)————————
19Reverse buzzer (BZ)————————
2TRAC off switch (MSW)————————
3A/T meter LCD (LPO1)————————
4A/T meter LCD (LPO2)————————
7Front right wheel speed (FRO)————————
8Front left wheel speed (FLO)————————

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W13—0.5OEM-B74-22———
1——W14—0.5OEM-B75-18———
1——W15—0.5OEM-B75-19———
1——W16—0.5OEM-B78-22———
1——W17—0.5EMUBLACK-Black-29———
1——W18—0.5EMUBLACK-Black-38———
1——W19—0.5EMUBLACK-Black-39———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-B78-16———
1——W2—0.85OEM-B78-7———
1——W3—0.85OEM-B78-8———
1——W4—0.85EMUBLACK-Black-13———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W5—0.85OEM-B74-21———
1——W6—0.85OEM-B74-31———
1——W7—0.85OEM-B74-9———
1——W8—0.85OEM-B75-17———
1——W9—0.85EMUBLACK-Black-27———
1——W10—0.85EMUBLACK-Black-28———
1——W11—0.85EMUBLACK-Grey-17———
1——W12—0.85EMUBLACK-Grey-24———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-B74-1Injector 3 (#30)injector_outEMUBLACK-Grey-23Injector #3injector_outsingle_source
OEM-B74-10Cam position (G2)trigger_inEMUBLACK-Black-21Camsync In #1trigger_insingle_source
OEM-B74-11Ignition 1 (IGT, cyl 1&6)ignition_outEMUBLACK-Grey-8Ignition coil #1ignition_outsingle_source
OEM-B74-12Ignition 2 (IGT2, cyl 5&2)ignition_outEMUBLACK-Grey-16Ignition coil #2ignition_outsingle_source
OEM-B74-13Ignition 3 (IGT3, cyl 3&4)ignition_outEMUBLACK-Grey-9Ignition coil #3ignition_outsingle_source
OEM-B74-15Wastegate VSV (PMC)low_side_out———single_source
OEM-B74-17VVT-i OCV - (OCV-)low_side_outEMUBLACK-Grey-21AUX 1 / Injector #7low_side_outsingle_source
OEM-B74-18VVT-i OCV + (OCV+)low_side_outEMUBLACK-Grey-13AUX 2 / Injector #8low_side_outsingle_source
OEM-B74-19ETCS-i clutch - (CL-)low_side_outEMUBLACK-Grey-5AUX 3low_side_outsingle_source
OEM-B74-2Injector 4 (#40)injector_outEMUBLACK-Grey-6Injector #4injector_outsingle_source
OEM-B74-20ETCS-i clutch + (CL+)low_side_outEMUBLACK-Grey-20AUX 4 / Tacholow_side_outsingle_source
OEM-B74-21Power ground (E01)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-B74-22Crank/cam sensor return (NE-)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-B74-23Crank position (NE+)trigger_inEMUBLACK-Black-8Primary triggertrigger_insingle_source
OEM-B74-24Neutral/park switch (NSW)digital_in———single_source
OEM-B74-25Igniter verification (IGF)digital_inEMUBLACK-Black-36Switch #3 Indigital_insingle_source
OEM-B74-27Knock sensor 2 (KNK2, rear)knock_inEMUBLACK-Black-16Knock Sensor in #2knock_insingle_source
OEM-B74-28Knock sensor 1 (KNK1, front)knock_inEMUBLACK-Black-3Knock Sensor in #1knock_insingle_source
OEM-B74-3Injector 5 (#50)injector_outEMUBLACK-Grey-14Injector #5injector_outsingle_source
OEM-B74-30ETCS-i motor shield (GEO1)shield———single_source
OEM-B74-31Power ground (E02)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-B74-4Injector 6 (#60)injector_outEMUBLACK-Grey-22Injector #6injector_outsingle_source
OEM-B74-5Intake air bypass VSV (VSV1)low_side_out———single_source
OEM-B74-7ETCS-i motor - (M-)hbridge_out———single_source
OEM-B74-8ETCS-i motor + (M+)hbridge_out———single_source
OEM-B74-9ETCS-i ground (ME01)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-B75-10Mass air flow (VG)analog_inEMUBLACK-Black-35Analog In #5analog_insingle_source
OEM-B75-12O2 sensor (OX)lambda_nb_inEMUBLACK-Black-37Analog In #6analog_insingle_source
OEM-B75-14Coolant temperature (THW)temp_inEMUBLACK-Black-5CLT Intemp_insingle_source
OEM-B75-15Accelerator pedal 1 (VPA)analog_inEMUBLACK-Black-18TPS Inanalog_insingle_source
OEM-B75-16Accelerator pedal 2 (VPA2)analog_inEMUBLACK-Black-17Analog In #3analog_insingle_source
OEM-B75-17Power ground (E1)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-B75-18Sensor ground (E2)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-B75-19MAF ground (EVG)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-B75-2Sensor power (VC)vrefEMUBLACK-Black-26+5V supplyvrefsingle_source
OEM-B75-20A/T 2nd-gear indicator (2)digital_in———single_source
OEM-B75-21A/T 1st-gear indicator (L)digital_in———single_source
OEM-B75-22Intake air temperature (THA)temp_inEMUBLACK-Black-32IAT Intemp_insingle_source
OEM-B75-23Throttle position 1 (VTA)analog_inEMUBLACK-Black-4Analog In #2analog_insingle_source
OEM-B75-24Throttle position 2 (VTA2)analog_inEMUBLACK-Black-30Analog In #4analog_insingle_source
OEM-B75-3Exhaust gas control VSV (VSV2)low_side_out———single_source
OEM-B75-4O2 sensor heater (HT)low_side_outEMUBLACK-Grey-19WBO Heaterlow_side_outsingle_source
OEM-B75-5Injector 1 (#10)injector_outEMUBLACK-Grey-7Injector #1injector_outsingle_source
OEM-B75-6Injector 2 (#20)injector_outEMUBLACK-Grey-15Injector #2injector_outsingle_source
OEM-B75-7EVAP purge VSV (PRG)low_side_out———single_source
OEM-B75-8Main oil pressure switch (MOPS)digital_in———single_source
OEM-B75-9Manifold pressure (PIM)analog_inEMUBLACK-Black-31Analog In #1analog_insingle_source
OEM-B76-1A/T shift solenoid 1 (S1)low_side_out———single_source
OEM-B76-10OD direct-clutch speed (NCO-)digital_in———single_source
OEM-B76-11No.2 speed sensor return (SP2-)digital_inEMUBLACK-Black-10Switch #1 Indigital_insingle_source
OEM-B76-12Exhaust bypass VSV (VSV3)low_side_out———single_source
OEM-B76-13A/T lock-up solenoid - (SLU-)low_side_out———single_source
OEM-B76-14A/T accumulator solenoid - (SLN-)low_side_out———single_source
OEM-B76-15A/T line-pressure solenoid - (SLT-)low_side_out———single_source
OEM-B76-16Fuel pressure-up VSV (FPU)low_side_out———single_source
OEM-B76-17A/T oil temperature (OIL)temp_inEMUBLACK-Black-9Flex Fuel Inanalog_insingle_source
OEM-B76-2A/T shift solenoid 2 (S2)low_side_out———single_source
OEM-B76-3A/T shift solenoid 3 (S3)low_side_out———single_source
OEM-B76-4OD direct-clutch speed (NCO+)digital_in———single_source
OEM-B76-5No.2 speed sensor (SP2+)digital_inEMUBLACK-Black-23Switch #2 Indigital_insingle_source
OEM-B76-6A/T shift solenoid 4 (S4)low_side_out———single_source
OEM-B76-7A/T lock-up solenoid + (SLU+)low_side_out———single_source
OEM-B76-8A/T accumulator solenoid + (SLN+)low_side_out———single_source
OEM-B76-9A/T line-pressure solenoid + (SLT+)low_side_out———single_source
OEM-B77-1A/C request (AC)digital_in———single_source
OEM-B77-13A/C clutch relay (ACMG)low_side_outEMUBLACK-Grey-12AUX 5low_side_outsingle_source
OEM-B77-14A/T shift down (SFTD)digital_in———single_source
OEM-B77-16A/T reverse indicator (R)digital_in———single_source
OEM-B77-18Rear right wheel speed (RRO)digital_in———single_source
OEM-B77-19Rear left wheel speed (RLO)digital_in———single_source
OEM-B77-2Starter signal (STA)digital_in———single_source
OEM-B77-20Tachometer output (TACH)tacho_out———single_source
OEM-B77-21ABS active (ABS)digital_in———single_source
OEM-B77-25No.1 speed sensor (SPD)digital_inEMUBLACK-Black-20VSS Indigital_insingle_source
OEM-B77-26Electrical load sense (ELS)digital_in———single_source
OEM-B77-27Road speed (RSPD)digital_in———single_source
OEM-B77-4A/T shift up (SFTU)digital_in———single_source
OEM-B77-5Diagnostic/timing check (TC)digital_in———single_source
OEM-B77-6Stop light switch (STP)digital_in———single_source
OEM-B77-7A/T manual position (3)digital_in———single_source
OEM-B78-1Battery constant (BATT)power_in———single_source
OEM-B78-10EFI main relay control (M-REL)low_side_outEMUBLACK-Grey-4AUX 6low_side_outsingle_source
OEM-B78-11Serial diagnostic (SIL)serial———single_source
OEM-B78-16EFI main relay power (+B)power_inEMUBLACK-Black-13Battery +12Vpower_insingle_source
OEM-B78-2TRAC snow-mode light (SNOW)low_side_out———single_source
OEM-B78-22Switch ground (EC)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-B78-3TRAC snow-mode switch (SNWI)digital_in———single_source
OEM-B78-4Fuel pump diagnostic (DI)digital_in———single_source
OEM-B78-5Fuel pump control (FPC)low_side_out———single_source
OEM-B78-6Check-engine light (W)low_side_out———single_source
OEM-B78-7ETCS-i power (+BM)power_inEMUBLACK-Black-13Battery +12Vpower_insingle_source
OEM-B78-8EFI main relay power (+B2)power_inEMUBLACK-Black-13Battery +12Vpower_insingle_source
OEM-B78-9Ignition switch (IGSW)digital_inEMUBLACK-Grey-18Ignition +12Vdigital_insingle_source
OEM-B79-1TRAC enable light (IND)low_side_out———single_source
OEM-B79-14TRAC active light (CIND)low_side_out———single_source
OEM-B79-17A/T meter LCD (LPO3)low_side_out———single_source
OEM-B79-18A/T meter LCD (SPTL)low_side_out———single_source
OEM-B79-19Reverse buzzer (BZ)low_side_out———single_source
OEM-B79-2TRAC off switch (MSW)digital_in———single_source
OEM-B79-3A/T meter LCD (LPO1)low_side_out———single_source
OEM-B79-4A/T meter LCD (LPO2)low_side_out———single_source
OEM-B79-7Front right wheel speed (FRO)digital_in———single_source
OEM-B79-8Front left wheel speed (FLO)digital_in———single_source

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-B78-16SP-14V-10.85no routeEFI main relay power (+B)—
W2OEM-B78-7SP-14V-10.85no routeETCS-i power (+BM)—
W3OEM-B78-8SP-14V-10.85no routeEFI main relay power (+B2)—
W4SP-14V-1EMUBLACK-Black-130.85no routeBattery +12V—
W5OEM-B74-21SP-GND-10.85no routePower ground (E01)—
W6OEM-B74-31SP-GND-10.85no routePower ground (E02)—
W7OEM-B74-9SP-GND-10.85no routeETCS-i ground (ME01)—
W8OEM-B75-17SP-GND-10.85no routePower ground (E1)—
W9SP-GND-1EMUBLACK-Black-270.85no routePower Ground—
W10SP-GND-1EMUBLACK-Black-280.85no routeEcu Ground—
W11SP-GND-1EMUBLACK-Grey-170.85no routePower Ground—
W12SP-GND-1EMUBLACK-Grey-240.85no routePower Ground—
W13OEM-B74-22SP-0V-10.5no routeCrank/cam sensor return (NE-)—
W14OEM-B75-18SP-0V-10.5no routeSensor ground (E2)—
W15OEM-B75-19SP-0V-10.5no routeMAF ground (EVG)—
W16OEM-B78-22SP-0V-10.5no routeSwitch ground (EC)—
W17SP-0V-1EMUBLACK-Black-290.5no routeSensor Ground—
W18SP-0V-1EMUBLACK-Black-380.5no routeSensor Ground—
W19SP-0V-1EMUBLACK-Black-390.5no routeSensor Ground—
W20OEM-B75-2EMUBLACK-Black-260.5no routeSensor power (VC)—
W21OEM-B74-23EMUBLACK-Black-80.5no routeCrank position (NE+)—
W22OEM-B74-10EMUBLACK-Black-210.5no routeCam position (G2)—
W23OEM-B74-28EMUBLACK-Black-30.5no routeKnock sensor 1 (KNK1, front)—
W24OEM-B74-27EMUBLACK-Black-160.5no routeKnock sensor 2 (KNK2, rear)—
W25OEM-B74-11EMUBLACK-Grey-80.5no routeIgnition 1 (IGT, cyl 1&6)—
W26OEM-B74-12EMUBLACK-Grey-160.5no routeIgnition 2 (IGT2, cyl 5&2)—
W27OEM-B74-13EMUBLACK-Grey-90.5no routeIgnition 3 (IGT3, cyl 3&4)—
W28OEM-B75-5EMUBLACK-Grey-70.5no routeInjector 1 (#10)—
W29OEM-B75-6EMUBLACK-Grey-150.5no routeInjector 2 (#20)—
W30OEM-B74-1EMUBLACK-Grey-230.5no routeInjector 3 (#30)—
W31OEM-B74-2EMUBLACK-Grey-60.5no routeInjector 4 (#40)—
W32OEM-B74-3EMUBLACK-Grey-140.5no routeInjector 5 (#50)—
W33OEM-B74-4EMUBLACK-Grey-220.5no routeInjector 6 (#60)—
W34OEM-B78-9EMUBLACK-Grey-180.5no routeIgnition switch (IGSW)—
W35OEM-B74-17EMUBLACK-Grey-210.5no routeVVT-i OCV - (OCV-)—
W36OEM-B74-18EMUBLACK-Grey-130.5no routeVVT-i OCV + (OCV+)—
W37OEM-B74-19EMUBLACK-Grey-50.5no routeETCS-i clutch - (CL-)—
W38OEM-B74-20EMUBLACK-Grey-200.5no routeETCS-i clutch + (CL+)—
W39OEM-B75-9EMUBLACK-Black-310.5no routeManifold pressure (PIM)—
W40OEM-B75-15EMUBLACK-Black-180.5no routeAccelerator pedal 1 (VPA)—
W41OEM-B75-23EMUBLACK-Black-40.5no routeThrottle position 1 (VTA)—
W42OEM-B75-16EMUBLACK-Black-170.5no routeAccelerator pedal 2 (VPA2)—
W43OEM-B75-24EMUBLACK-Black-300.5no routeThrottle position 2 (VTA2)—
W44OEM-B75-14EMUBLACK-Black-50.5no routeCoolant temperature (THW)—
W45OEM-B77-13EMUBLACK-Grey-120.5no routeA/C clutch relay (ACMG)—
W46OEM-B78-10EMUBLACK-Grey-40.5no routeEFI main relay control (M-REL)—
W47OEM-B75-4EMUBLACK-Grey-190.5no routeO2 sensor heater (HT)—
W48OEM-B75-10EMUBLACK-Black-350.5no routeMass air flow (VG)—
W49OEM-B75-12EMUBLACK-Black-370.5no routeO2 sensor (OX)—
W50OEM-B75-22EMUBLACK-Black-320.5no routeIntake air temperature (THA)—
W51OEM-B76-17EMUBLACK-Black-90.5no routeA/T oil temperature (OIL)—
W52OEM-B77-25EMUBLACK-Black-200.5no routeNo.1 speed sensor (SPD)—
W53OEM-B76-11EMUBLACK-Black-100.5no routeNo.2 speed sensor return (SP2-)—
W54OEM-B76-5EMUBLACK-Black-230.5no routeNo.2 speed sensor (SP2+)—
W55OEM-B74-25EMUBLACK-Black-360.5no routeIgniter verification (IGF)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (6)

SeverityCodeSubjectMessage
errorINJECTOR_BALLASTEMU BlackThe 2JZ-GTE injectors (2JZ-GTE fuel injector) are low-impedance, but EMU Black drives saturated (high-Z) injectors only. Add a ballast resistor pack in series with each injector, or use an ECU with low-Z / peak-and-hold injector drivers.
errorREQUIRED_UNMAPPEDOEM-B74-7Required OEM function "ETCS-i motor - (M-)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-B74-8Required OEM function "ETCS-i motor + (M+)" (hbridge_out) is not connected to the new ECU.
warnNO_FUEL_PUMPfuel pumpThis engine harness has no fuel-pump control path: no fuel-pump relay output is wired to the new ECU. If the stock car switches the pump outside the ECU (an airflow-meter contact or a separate module), the standalone must drive the pump relay itself — see the install notes for this car.
infoNET_FAMILYOEM-B76-17 ↔ EMUBLACK-Black-9OEM-B76-17 "A/T oil temperature (OIL)" [temp_in] is wired to EMUBLACK-Black-9 "Flex Fuel In" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
infoUNMAPPEDOEM53 optional OEM pins are not mapped: OEM-B74-15 Wastegate VSV (PMC); OEM-B74-24 Neutral/park switch (NSW); OEM-B74-30 ETCS-i motor shield (GEO1); OEM-B74-5 Intake air bypass VSV (VSV1); OEM-B75-20 A/T 2nd-gear indicator (2); OEM-B75-21 A/T 1st-gear indicator (L); OEM-B75-3 Exhaust gas control VSV (VSV2); OEM-B75-7 EVAP purge VSV (PRG); OEM-B75-8 Main oil pressure switch (MOPS); OEM-B76-1 A/T shift solenoid 1 (S1); OEM-B76-10 OD direct-clutch speed (NCO-); OEM-B76-12 Exhaust bypass VSV (VSV3); OEM-B76-13 A/T lock-up solenoid - (SLU-); OEM-B76-14 A/T accumulator solenoid - (SLN-); OEM-B76-15 A/T line-pressure solenoid - (SLT-); OEM-B76-16 Fuel pressure-up VSV (FPU); OEM-B76-2 A/T shift solenoid 2 (S2); OEM-B76-3 A/T shift solenoid 3 (S3); OEM-B76-4 OD direct-clutch speed (NCO+); OEM-B76-6 A/T shift solenoid 4 (S4); OEM-B76-7 A/T lock-up solenoid + (SLU+); OEM-B76-8 A/T accumulator solenoid + (SLN+); OEM-B76-9 A/T line-pressure solenoid + (SLT+); OEM-B77-1 A/C request (AC); OEM-B77-14 A/T shift down (SFTD); OEM-B77-16 A/T reverse indicator (R); OEM-B77-18 Rear right wheel speed (RRO); OEM-B77-19 Rear left wheel speed (RLO); OEM-B77-2 Starter signal (STA); OEM-B77-20 Tachometer output (TACH); OEM-B77-21 ABS active (ABS); OEM-B77-26 Electrical load sense (ELS); OEM-B77-27 Road speed (RSPD); OEM-B77-4 A/T shift up (SFTU); OEM-B77-5 Diagnostic/timing check (TC); OEM-B77-6 Stop light switch (STP); OEM-B77-7 A/T manual position (3); OEM-B78-11 Serial diagnostic (SIL); OEM-B78-2 TRAC snow-mode light (SNOW); OEM-B78-3 TRAC snow-mode switch (SNWI); OEM-B78-4 Fuel pump diagnostic (DI); OEM-B78-5 Fuel pump control (FPC); OEM-B78-6 Check-engine light (W); OEM-B79-1 TRAC enable light (IND); OEM-B79-14 TRAC active light (CIND); OEM-B79-17 A/T meter LCD (LPO3); OEM-B79-18 A/T meter LCD (SPTL); OEM-B79-19 Reverse buzzer (BZ); OEM-B79-2 TRAC off switch (MSW); OEM-B79-3 A/T meter LCD (LPO1); OEM-B79-4 A/T meter LCD (LPO2); OEM-B79-7 Front right wheel speed (FRO); OEM-B79-8 Front left wheel speed (FLO)

Accepted (1)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-B78-1Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed.mapping-proposal

Notes

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-B74 7: ETCS-i motor - (M-): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-B74 8: ETCS-i motor + (M+): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand Not wired: - OEM-B78 1: Battery constant (BATT): ECUMASTER EMU Black has no battery-constant input; not needed - OEM-B74 30: ETCS-i motor shield (GEO1): no shield pin on ECUMASTER EMU Black - OEM-B76 1: A/T shift solenoid 1 (S1): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B76 2: A/T shift solenoid 2 (S2): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B76 3: A/T shift solenoid 3 (S3): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B76 6: A/T shift solenoid 4 (S4): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B74 15: Wastegate VSV (PMC): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B74 5: Intake air bypass VSV (VSV1): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B75 3: Exhaust gas control VSV (VSV2): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B75 7: EVAP purge VSV (PRG): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B76 12: Exhaust bypass VSV (VSV3): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B76 13: A/T lock-up solenoid - (SLU-): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B76 14: A/T accumulator solenoid - (SLN-): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B76 15: A/T line-pressure solenoid - (SLT-): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B76 16: Fuel pressure-up VSV (FPU): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B76 7: A/T lock-up solenoid + (SLU+): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B76 8: A/T accumulator solenoid + (SLN+): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B76 9: A/T line-pressure solenoid + (SLT+): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B78 2: TRAC snow-mode light (SNOW): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B78 5: Fuel pump control (FPC): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B78 6: Check-engine light (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B79 1: TRAC enable light (IND): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B79 14: TRAC active light (CIND): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B79 17: A/T meter LCD (LPO3): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B79 18: A/T meter LCD (SPTL): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B79 19: Reverse buzzer (BZ): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B79 3: A/T meter LCD (LPO1): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B79 4: A/T meter LCD (LPO2): no free low_side/relay_control/heater_low_side/ls_hs/injector on ECUMASTER EMU Black - OEM-B77 20: Tachometer output (TACH): no free tacho/frequency_out/low_side/ls_hs on ECUMASTER EMU Black - OEM-B76 10: OD direct-clutch speed (NCO-): no free frequency_in/switch_in on ECUMASTER EMU Black - OEM-B76 4: OD direct-clutch speed (NCO+): no free frequency_in/switch_in on ECUMASTER EMU Black - OEM-B77 18: Rear right wheel speed (RRO): no free frequency_in/switch_in on ECUMASTER EMU Black - OEM-B77 19: Rear left wheel speed (RLO): no free frequency_in/switch_in on ECUMASTER EMU Black - OEM-B77 27: Road speed (RSPD): no free frequency_in/switch_in on ECUMASTER EMU Black - OEM-B78 4: Fuel pump diagnostic (DI): no free frequency_in/switch_in on ECUMASTER EMU Black - OEM-B79 7: Front right wheel speed (FRO): no free frequency_in/switch_in on ECUMASTER EMU Black - OEM-B79 8: Front left wheel speed (FLO): no free frequency_in/switch_in on ECUMASTER EMU Black - OEM-B75 21: A/T 1st-gear indicator (L): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B75 20: A/T 2nd-gear indicator (2): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B74 24: Neutral/park switch (NSW): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B75 8: Main oil pressure switch (MOPS): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B77 1: A/C request (AC): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B77 14: A/T shift down (SFTD): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B77 16: A/T reverse indicator (R): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B77 2: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B77 21: ABS active (ABS): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B77 26: Electrical load sense (ELS): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B77 4: A/T shift up (SFTU): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B77 5: Diagnostic/timing check (TC): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B77 6: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B77 7: A/T manual position (3): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B78 3: TRAC snow-mode switch (SNWI): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B79 2: TRAC off switch (MSW): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-B78 11: Serial diagnostic (SIL): no free k_line on ECUMASTER EMU Black

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
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
3community_copywilbo666: 2JZ-GTE VVTi JZA80 Supra Engine Wiring (ECU pinout, B74-B79)http://wilbo666.pbworks.com/w/page/57949268/2JZ-GTE%20VVTi%20JZA80%20Supra%20Engine%20Wiring———