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Scion FR-S (ZN6, FA20) → ECUMASTER EMU Black (auto)

Scion FR-S (ZN6, FA20) — ECUMASTER — EMU Black
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-09

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 errors2: read the Findings page before cutting any wire
Size of the job69 wires · 10 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-A33-1SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-A34-6SP-14V-10.85☐☐☐☐☐☐☐
W3SP-14V-1EMUBLACK-Black-130.85☐☐☐☐☐☐☐
W4OEM-A33-4SP-GND-10.85☐☐☐☐☐☐☐
W5OEM-A34-1SP-GND-10.85☐☐☐☐☐☐☐
W6OEM-A34-2SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-A34-3SP-GND-10.85☐☐☐☐☐☐☐
W8OEM-A36-3SP-GND-10.85☐☐☐☐☐☐☐
W9OEM-A36-4SP-GND-10.85☐☐☐☐☐☐☐
W10SP-GND-1EMUBLACK-Black-270.85☐☐☐☐☐☐☐
W11SP-GND-1EMUBLACK-Black-280.85☐☐☐☐☐☐☐
W12SP-GND-1EMUBLACK-Grey-170.85☐☐☐☐☐☐☐
W13SP-GND-1EMUBLACK-Grey-240.85☐☐☐☐☐☐☐
W14OEM-A33-29SP-0V-10.5☐☐☐☐☐☐☐
W15OEM-A34-27SP-0V-10.5☐☐☐☐☐☐☐
W16OEM-A35-29SP-0V-10.5☐☐☐☐☐☐☐
W17OEM-A35-30SP-0V-10.5☐☐☐☐☐☐☐
W18OEM-A36-29SP-0V-10.5☐☐☐☐☐☐☐
W19SP-0V-1EMUBLACK-Black-290.5☐☐☐☐☐☐☐
W20SP-0V-1EMUBLACK-Black-380.5☐☐☐☐☐☐☐
W21SP-0V-1EMUBLACK-Black-390.5☐☐☐☐☐☐☐
W22OEM-A34-34SP-5V1-10.5☐☐☐☐☐☐☐
W23OEM-A35-21SP-5V1-10.5☐☐☐☐☐☐☐
W24OEM-A35-22SP-5V1-10.5☐☐☐☐☐☐☐
W25OEM-A36-19SP-5V1-10.5☐☐☐☐☐☐☐
W26SP-5V1-1EMUBLACK-Black-260.5☐☐☐☐☐☐☐
W27OEM-A34-16EMUBLACK-Black-80.5☐☐☐☐☐☐☐
W28OEM-A34-14EMUBLACK-Black-210.5☐☐☐☐☐☐☐
W29OEM-A34-26EMUBLACK-Black-70.5☐☐☐☐☐☐☐
W30OEM-A34-25EMUBLACK-Black-200.5☐☐☐☐☐☐☐
W31OEM-A34-28EMUBLACK-Black-30.5☐☐☐☐☐☐☐
W32OEM-A34-17EMUBLACK-Black-160.5☐☐☐☐☐☐☐
W33OEM-A36-21EMUBLACK-Grey-80.5☐☐☐☐☐☐☐
W34OEM-A36-10EMUBLACK-Grey-160.5☐☐☐☐☐☐☐
W35OEM-A36-31EMUBLACK-Grey-90.5☐☐☐☐☐☐☐
W36OEM-A36-8EMUBLACK-Black-140.5☐☐☐☐☐☐☐
W37OEM-A36-12EMUBLACK-Grey-70.5☐☐☐☐☐☐☐
W38OEM-A36-14EMUBLACK-Grey-150.5☐☐☐☐☐☐☐
W39OEM-A36-22EMUBLACK-Grey-230.5☐☐☐☐☐☐☐
W40OEM-A36-25EMUBLACK-Grey-60.5☐☐☐☐☐☐☐
W41OEM-A36-24EMUBLACK-Grey-140.5☐☐☐☐☐☐☐
W42OEM-A36-32EMUBLACK-Grey-220.5☐☐☐☐☐☐☐
W43OEM-A33-27EMUBLACK-Grey-180.5☐☐☐☐☐☐☐
W44OEM-A36-1EMUBLACK-Grey-100.5☐☐☐☐☐☐☐
W45OEM-A36-2EMUBLACK-Grey-20.5☐☐☐☐☐☐☐
W46OEM-A35-13EMUBLACK-Grey-210.5☐☐☐☐☐☐☐
W47OEM-A35-12EMUBLACK-Grey-130.5☐☐☐☐☐☐☐
W48OEM-A35-11EMUBLACK-Grey-50.5☐☐☐☐☐☐☐
W49OEM-A33-20EMUBLACK-Grey-200.5☐☐☐☐☐☐☐
W50OEM-A35-17EMUBLACK-Grey-120.5☐☐☐☐☐☐☐
W51OEM-A35-35EMUBLACK-Grey-40.5☐☐☐☐☐☐☐
W52OEM-A35-5EMUBLACK-Grey-110.5☐☐☐☐☐☐☐
W53OEM-A35-7EMUBLACK-Grey-30.5☐☐☐☐☐☐☐
W54OEM-A34-5EMUBLACK-Grey-190.5☐☐☐☐☐☐☐
W55OEM-A33-22EMUBLACK-Black-310.5☐☐☐☐☐☐☐
W56OEM-A34-20EMUBLACK-Black-40.5☐☐☐☐☐☐☐
W57OEM-A35-31EMUBLACK-Black-180.5☐☐☐☐☐☐☐
W58OEM-A36-28EMUBLACK-Black-170.5☐☐☐☐☐☐☐
W59OEM-A35-23EMUBLACK-Black-300.5☐☐☐☐☐☐☐
W60OEM-A36-18EMUBLACK-Black-350.5☐☐☐☐☐☐☐
W61OEM-A34-21EMUBLACK-Black-370.5☐☐☐☐☐☐☐
W62OEM-A36-30EMUBLACK-Black-320.5☐☐☐☐☐☐☐
W63OEM-A33-12EMUBLACK-Black-50.5☐☐☐☐☐☐☐
W64OEM-A36-20EMUBLACK-Black-90.5☐☐☐☐☐☐☐
W65OEM-A33-14EMUBLACK-Black-100.5☐☐☐☐☐☐☐
W66OEM-A33-15EMUBLACK-Black-230.5☐☐☐☐☐☐☐
W67OEM-A33-16EMUBLACK-Black-360.5☐☐☐☐☐☐☐
W68OEM-A33-19EMUBLACK-Black-120.5☐☐☐☐☐☐☐
W69OEM-A33-18EMUBLACK-Black-250.5☐☐☐☐☐☐☐

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-27open (OL)+12 V supply must not touch power ground
2EMUBLACK-Black-13EMUBLACK-Black-29open (OL)+12 V supply must not touch sensor ground
3EMUBLACK-Black-13EMUBLACK-Black-26open (OL)+12 V supply must not touch 5 V sensor reference
4EMUBLACK-Black-27EMUBLACK-Black-26open (OL)power ground must not touch 5 V sensor reference
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-A33OEM-A34OEM-A35OEM-A36SP-0VSP-14VSP-5V1SP-GND

Connectors

EMUBLACK-Black

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition coil #5————————
10Switch #1 In—W65—0.5OEM-A33-14———
11RS232 TXD————————
12CAN H—W68—0.5OEM-A33-19———
13Battery +12V—W3—0.85SP-14V-1———
14Ignition coil #4—W36—0.5OEM-A36-8———
15EGT in #2————————
16Knock Sensor in #2—W32—0.5OEM-A34-17———
17Analog In #3—W58—0.5OEM-A36-28———
18TPS In—W57—0.5OEM-A35-31———
19WBO Ip————————
2EGT in #1————————
20VSS In—W30—0.5OEM-A34-25———
21Camsync In #1—W28—0.5OEM-A34-14———
22WBO Rcal————————
23Switch #2 In—W66—0.5OEM-A33-15———
24RS232 RXD————————
25CAN L—W69—0.5OEM-A33-18———
26+5V supply—W26—0.5SP-5V1-1———
27Power Ground—W10—0.85SP-GND-1———
28Ecu Ground—W11—0.85SP-GND-1———
29Sensor Ground—W19—0.5SP-0V-1———
3Knock Sensor in #1—W31—0.5OEM-A34-28———
30Analog In #4—W59—0.5OEM-A35-23———
31Analog In #1—W55—0.5OEM-A33-22———
32IAT In—W62—0.5OEM-A36-30———
33WBO VGND————————
34+5V supply————————
35Analog In #5—W60—0.5OEM-A36-18———
36Switch #3 In—W67—0.5OEM-A33-16———
37Analog In #6—W61—0.5OEM-A34-21———
38Sensor Ground—W20—0.5SP-0V-1———
39Sensor Ground—W21—0.5SP-0V-1———
4Analog In #2—W56—0.5OEM-A34-20———
5CLT In—W63—0.5OEM-A33-12———
6WBO Vs————————
7Camsync In #2—W29—0.5OEM-A34-26———
8Primary trigger—W27—0.5OEM-A34-16———
9Flex Fuel In—W64—0.5OEM-A36-20———

EMUBLACK-Grey

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Ignition coil #6————————
10H-Bridge #1 Winding B—W44—0.5OEM-A36-1———
11H-Bridge #2 Winding B—W52—0.5OEM-A35-5———
12AUX 5—W50—0.5OEM-A35-17———
13AUX 2 / Injector #8—W47—0.5OEM-A35-12———
14Injector #5—W41—0.5OEM-A36-24———
15Injector #2—W38—0.5OEM-A36-14———
16Ignition coil #2—W34—0.5OEM-A36-10———
17Power Ground—W12—0.85SP-GND-1———
18Ignition +12V—W43—0.5OEM-A33-27———
19WBO Heater—W54—0.5OEM-A34-5———
2H-Bridge #1 Winding A—W45—0.5OEM-A36-2———
20AUX 4 / Tacho—W49—0.5OEM-A33-20———
21AUX 1 / Injector #7—W46—0.5OEM-A35-13———
22Injector #6—W42—0.5OEM-A36-32———
23Injector #3—W39—0.5OEM-A36-22———
24Power Ground—W13—0.85SP-GND-1———
3H-Bridge #2 Winding A—W53—0.5OEM-A35-7———
4AUX 6—W51—0.5OEM-A35-35———
5AUX 3—W48—0.5OEM-A35-11———
6Injector #4—W40—0.5OEM-A36-25———
7Injector #1—W37—0.5OEM-A36-12———
8Ignition coil #1—W33—0.5OEM-A36-21———
9Ignition coil #3—W35—0.5OEM-A36-31———

OEM-A33

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1ECU power (+B2, main relay)—W1—0.85SP-14V-1———
12Intake air temperature (THA, in MAF)—W63—0.5EMUBLACK-Black-5———
14Starter signal (STSW2)—W65—0.5EMUBLACK-Black-10———
15Clutch switch (CLSW)—W66—0.5EMUBLACK-Black-23———
16Neutral switch (NSW)—W67—0.5EMUBLACK-Black-36———
17Starter signal (STSW2)————————
18CAN low (CANL)—W69—0.5EMUBLACK-Black-25———
19CAN high (CANH)—W68—0.5EMUBLACK-Black-12———
2Battery constant (BATT, memory)————————
20Blower relay (HB)—W49—0.5EMUBLACK-Grey-20———
22Mass air flow (VG)—W55—0.5EMUBLACK-Black-31———
27Ignition switch sense (IGSW, IG2 relay)—W43—0.5EMUBLACK-Grey-18———
28Shield ground (SLE2)————————
29MAF sensor ground (E2G)—W14—0.5SP-0V-1———
3Stop light switch (ST1-)————————
4Power ground (EC)—W4—0.85SP-GND-1———
7Stop light switch (STP)————————
8A/C pressure sensor (ACP)————————

OEM-A34

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Power ground (E03)—W5—0.85SP-GND-1———
11DI injector confirmation (IJF1)————————
13High-pressure fuel pump spill valve (FPF)————————
14VVT cam sensor exhaust bank 1 (EV1+)—W28—0.5EMUBLACK-Black-21———
15VVT cam sensor intake bank 2 (VV2+)————————
16Crank position (NE+)—W27—0.5EMUBLACK-Black-8———
17Knock sensor 2 (KNK2)—W32—0.5EMUBLACK-Black-16———
18A/F ratio sensor (A1A-)————————
19A/F ratio sensor (A1A+)————————
2Power ground (E04)—W6—0.85SP-GND-1———
20Manifold absolute pressure (PIM)—W56—0.5EMUBLACK-Black-4———
21Heated oxygen sensor (OX1B, rear)—W61—0.5EMUBLACK-Black-37———
25VVT cam sensor exhaust bank 2 (EV2+)—W30—0.5EMUBLACK-Black-20———
26VVT cam sensor intake bank 1 (VV1+)—W29—0.5EMUBLACK-Black-7———
27Crank position return (NE-)—W15—0.5SP-0V-1———
28Knock sensor 1 (KNK1)—W31—0.5EMUBLACK-Black-3———
29Shield ground (EKNK)————————
3Power ground (E05)—W7—0.85SP-GND-1———
30Shield ground (SLE1)————————
31DI injector confirmation (IJF2)————————
32High-pressure fuel pump spill valve (FPD)————————
34OCV power source (VCV, 5V)—W22—0.5SP-5V1-1———
35Shield ground (SLE3)————————
5A/F ratio sensor heater (HA1A)—W54—0.5EMUBLACK-Grey-19———
6ECU power (+B, main relay)—W2—0.85SP-14V-1———
9Fuel pressure sensor (PR)————————

OEM-A35

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Canister vent valve (VPMP)————————
10Fuel pump control monitor (DI)————————
11Cooling fan relay 3 (FAN1)—W48—0.5EMUBLACK-Grey-5———
12Cooling fan relay 2 (FAN2)—W47—0.5EMUBLACK-Grey-13———
13EFI main relay 1 (SSHUT)—W46—0.5EMUBLACK-Grey-21———
15Tachometer output (TACH)————————
17ETCS relay (MCR)—W50—0.5EMUBLACK-Grey-12———
19Fuel pump control (FPC)————————
20Canister pressure sensor (PPMP)————————
21Accelerator pedal 5V supply (VCPA)—W23—0.5SP-5V1-1———
22Accelerator pedal 5V supply (VCP2)—W24—0.5SP-5V1-1———
23Accelerator pedal position (VPA)—W59—0.5EMUBLACK-Black-30———
26Starter signal (STA)————————
29Accelerator pedal ground (EPA)—W16—0.5SP-0V-1———
30Accelerator pedal ground (EPA2)—W17—0.5SP-0V-1———
31Accelerator pedal position 2 (VPA2)—W57—0.5EMUBLACK-Black-18———
35A/C clutch relay (AC)—W51—0.5EMUBLACK-Grey-4———
5Injector relay (IREL)—W52—0.5EMUBLACK-Grey-11———
7ETCS relay (+BM)—W53—0.5EMUBLACK-Grey-3———
8Leak detection pump (MPMP)————————

OEM-A36

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Throttle actuator motor - (M-)—W44—0.5EMUBLACK-Grey-10———
10Ignition coil 2 (IGT2)—W34—0.5EMUBLACK-Grey-16———
11Purge valve (PRG)————————
12Injector 1 port (#10)—W37—0.5EMUBLACK-Grey-7———
13Injector 4 port (#40)————————
14Injector 1 direct (#1)—W38—0.5EMUBLACK-Grey-15———
16OCV intake bank 2 (OC2)————————
17OCV intake bank 1 (OC1)————————
18Throttle position (VTA1)—W60—0.5EMUBLACK-Black-35———
19Sensor 5V supply (VC)—W25—0.5SP-5V1-1———
2Throttle actuator motor + (M+)—W45—0.5EMUBLACK-Grey-2———
20Oil temperature (OT)—W64—0.5EMUBLACK-Black-9———
21Ignition coil 1 (IGT1)—W33—0.5EMUBLACK-Grey-8———
22Injector 2 port (#20)—W39—0.5EMUBLACK-Grey-23———
23Injector 4 direct (#4)————————
24Injector 3 direct (#3)—W41—0.5EMUBLACK-Grey-14———
25Injector 2 direct (#2)—W40—0.5EMUBLACK-Grey-6———
28Throttle position 2 (VTA2)—W58—0.5EMUBLACK-Black-17———
29Sensor ground (E1)—W18—0.5SP-0V-1———
3Power ground (E02)—W8—0.85SP-GND-1———
30Engine coolant temperature (THW)—W62—0.5EMUBLACK-Black-32———
31Ignition coil 3 (IGT3)—W35—0.5EMUBLACK-Grey-9———
32Injector 3 port (#30)—W42—0.5EMUBLACK-Grey-22———
4Power ground (E01)—W9—0.85SP-GND-1———
5OCV exhaust bank 2 (OE2)————————
6Heated oxygen sensor heater (HT1B)————————
7OCV exhaust bank 1 (OE1)————————
8Ignition coil 4 (IGT4)—W36—0.5EMUBLACK-Black-14———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W14—0.5OEM-A33-29———
1——W15—0.5OEM-A34-27———
1——W16—0.5OEM-A35-29———
1——W17—0.5OEM-A35-30———
1——W18—0.5OEM-A36-29———
1——W19—0.5EMUBLACK-Black-29———
1——W20—0.5EMUBLACK-Black-38———
1——W21—0.5EMUBLACK-Black-39———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-A33-1———
1——W2—0.85OEM-A34-6———
1——W3—0.85EMUBLACK-Black-13———

SP-5V1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W22—0.5OEM-A34-34———
1——W23—0.5OEM-A35-21———
1——W24—0.5OEM-A35-22———
1——W25—0.5OEM-A36-19———
1——W26—0.5EMUBLACK-Black-26———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W4—0.85OEM-A33-4———
1——W5—0.85OEM-A34-1———
1——W6—0.85OEM-A34-2———
1——W7—0.85OEM-A34-3———
1——W8—0.85OEM-A36-3———
1——W9—0.85OEM-A36-4———
1——W10—0.85EMUBLACK-Black-27———
1——W11—0.85EMUBLACK-Black-28———
1——W12—0.85EMUBLACK-Grey-17———
1——W13—0.85EMUBLACK-Grey-24———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-A33-1ECU power (+B2, main relay)power_inEMUBLACK-Black-13Battery +12Vpower_insingle_source
OEM-A33-12Intake air temperature (THA, in MAF)temp_inEMUBLACK-Black-5CLT Intemp_insingle_source
OEM-A33-14Starter signal (STSW2)digital_inEMUBLACK-Black-10Switch #1 Indigital_insingle_source
OEM-A33-15Clutch switch (CLSW)digital_inEMUBLACK-Black-23Switch #2 Indigital_insingle_source
OEM-A33-16Neutral switch (NSW)digital_inEMUBLACK-Black-36Switch #3 Indigital_insingle_source
OEM-A33-17Starter signal (STSW2)digital_in———single_source
OEM-A33-18CAN low (CANL)can_lEMUBLACK-Black-25CAN Lcan_lsingle_source
OEM-A33-19CAN high (CANH)can_hEMUBLACK-Black-12CAN Hcan_hsingle_source
OEM-A33-2Battery constant (BATT, memory)power_in———single_source
OEM-A33-20Blower relay (HB)low_side_outEMUBLACK-Grey-20AUX 4 / Tacholow_side_outsingle_source
OEM-A33-22Mass air flow (VG)analog_inEMUBLACK-Black-31Analog In #1analog_insingle_source
OEM-A33-27Ignition switch sense (IGSW, IG2 relay)digital_inEMUBLACK-Grey-18Ignition +12Vdigital_insingle_source
OEM-A33-28Shield ground (SLE2)shield———single_source
OEM-A33-29MAF sensor ground (E2G)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-A33-3Stop light switch (ST1-)digital_in———single_source
OEM-A33-4Power ground (EC)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-A33-7Stop light switch (STP)digital_in———single_source
OEM-A33-8A/C pressure sensor (ACP)analog_in———single_source
OEM-A34-1Power ground (E03)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-A34-11DI injector confirmation (IJF1)analog_in———single_source
OEM-A34-13High-pressure fuel pump spill valve (FPF)low_side_out———single_source
OEM-A34-14VVT cam sensor exhaust bank 1 (EV1+)trigger_inEMUBLACK-Black-21Camsync In #1trigger_insingle_source
OEM-A34-15VVT cam sensor intake bank 2 (VV2+)trigger_in———single_source
OEM-A34-16Crank position (NE+)trigger_inEMUBLACK-Black-8Primary triggertrigger_insingle_source
OEM-A34-17Knock sensor 2 (KNK2)knock_inEMUBLACK-Black-16Knock Sensor in #2knock_insingle_source
OEM-A34-18A/F ratio sensor (A1A-)————single_source
OEM-A34-19A/F ratio sensor (A1A+)————single_source
OEM-A34-2Power ground (E04)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-A34-20Manifold absolute pressure (PIM)analog_inEMUBLACK-Black-4Analog In #2analog_insingle_source
OEM-A34-21Heated oxygen sensor (OX1B, rear)lambda_nb_inEMUBLACK-Black-37Analog In #6analog_insingle_source
OEM-A34-25VVT cam sensor exhaust bank 2 (EV2+)trigger_inEMUBLACK-Black-20VSS Indigital_insingle_source
OEM-A34-26VVT cam sensor intake bank 1 (VV1+)trigger_inEMUBLACK-Black-7Camsync In #2trigger_insingle_source
OEM-A34-27Crank position return (NE-)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-A34-28Knock sensor 1 (KNK1)knock_inEMUBLACK-Black-3Knock Sensor in #1knock_insingle_source
OEM-A34-29Shield ground (EKNK)shield———single_source
OEM-A34-3Power ground (E05)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-A34-30Shield ground (SLE1)shield———single_source
OEM-A34-31DI injector confirmation (IJF2)analog_in———single_source
OEM-A34-32High-pressure fuel pump spill valve (FPD)low_side_out———single_source
OEM-A34-34OCV power source (VCV, 5V)vrefEMUBLACK-Black-26+5V supplyvrefsingle_source
OEM-A34-35Shield ground (SLE3)shield———single_source
OEM-A34-5A/F ratio sensor heater (HA1A)low_side_outEMUBLACK-Grey-19WBO Heaterlow_side_outsingle_source
OEM-A34-6ECU power (+B, main relay)power_inEMUBLACK-Black-13Battery +12Vpower_insingle_source
OEM-A34-9Fuel pressure sensor (PR)analog_in———single_source
OEM-A35-1Canister vent valve (VPMP)low_side_out———single_source
OEM-A35-10Fuel pump control monitor (DI)analog_in———single_source
OEM-A35-11Cooling fan relay 3 (FAN1)low_side_outEMUBLACK-Grey-5AUX 3low_side_outsingle_source
OEM-A35-12Cooling fan relay 2 (FAN2)low_side_outEMUBLACK-Grey-13AUX 2 / Injector #8low_side_outsingle_source
OEM-A35-13EFI main relay 1 (SSHUT)low_side_outEMUBLACK-Grey-21AUX 1 / Injector #7low_side_outsingle_source
OEM-A35-15Tachometer output (TACH)tacho_out———single_source
OEM-A35-17ETCS relay (MCR)low_side_outEMUBLACK-Grey-12AUX 5low_side_outsingle_source
OEM-A35-19Fuel pump control (FPC)low_side_out———single_source
OEM-A35-20Canister pressure sensor (PPMP)analog_in———single_source
OEM-A35-21Accelerator pedal 5V supply (VCPA)vrefEMUBLACK-Black-26+5V supplyvrefsingle_source
OEM-A35-22Accelerator pedal 5V supply (VCP2)vrefEMUBLACK-Black-26+5V supplyvrefsingle_source
OEM-A35-23Accelerator pedal position (VPA)analog_inEMUBLACK-Black-30Analog In #4analog_insingle_source
OEM-A35-26Starter signal (STA)digital_in———single_source
OEM-A35-29Accelerator pedal ground (EPA)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-A35-30Accelerator pedal ground (EPA2)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-A35-31Accelerator pedal position 2 (VPA2)analog_inEMUBLACK-Black-18TPS Inanalog_insingle_source
OEM-A35-35A/C clutch relay (AC)low_side_outEMUBLACK-Grey-4AUX 6low_side_outsingle_source
OEM-A35-5Injector relay (IREL)low_side_outEMUBLACK-Grey-11H-Bridge #2 Winding Bhbridge_outsingle_source
OEM-A35-7ETCS relay (+BM)low_side_outEMUBLACK-Grey-3H-Bridge #2 Winding Ahbridge_outsingle_source
OEM-A35-8Leak detection pump (MPMP)low_side_out———single_source
OEM-A36-1Throttle actuator motor - (M-)hbridge_outEMUBLACK-Grey-10H-Bridge #1 Winding Bhbridge_outsingle_source
OEM-A36-10Ignition coil 2 (IGT2)ignition_outEMUBLACK-Grey-16Ignition coil #2ignition_outsingle_source
OEM-A36-11Purge valve (PRG)low_side_out———single_source
OEM-A36-12Injector 1 port (#10)injector_outEMUBLACK-Grey-7Injector #1injector_outsingle_source
OEM-A36-13Injector 4 port (#40)injector_out———single_source
OEM-A36-14Injector 1 direct (#1)injector_outEMUBLACK-Grey-15Injector #2injector_outsingle_source
OEM-A36-16OCV intake bank 2 (OC2)low_side_out———single_source
OEM-A36-17OCV intake bank 1 (OC1)low_side_out———single_source
OEM-A36-18Throttle position (VTA1)analog_inEMUBLACK-Black-35Analog In #5analog_insingle_source
OEM-A36-19Sensor 5V supply (VC)vrefEMUBLACK-Black-26+5V supplyvrefsingle_source
OEM-A36-2Throttle actuator motor + (M+)hbridge_outEMUBLACK-Grey-2H-Bridge #1 Winding Ahbridge_outsingle_source
OEM-A36-20Oil temperature (OT)temp_inEMUBLACK-Black-9Flex Fuel Inanalog_insingle_source
OEM-A36-21Ignition coil 1 (IGT1)ignition_outEMUBLACK-Grey-8Ignition coil #1ignition_outsingle_source
OEM-A36-22Injector 2 port (#20)injector_outEMUBLACK-Grey-23Injector #3injector_outsingle_source
OEM-A36-23Injector 4 direct (#4)injector_out———single_source
OEM-A36-24Injector 3 direct (#3)injector_outEMUBLACK-Grey-14Injector #5injector_outsingle_source
OEM-A36-25Injector 2 direct (#2)injector_outEMUBLACK-Grey-6Injector #4injector_outsingle_source
OEM-A36-28Throttle position 2 (VTA2)analog_inEMUBLACK-Black-17Analog In #3analog_insingle_source
OEM-A36-29Sensor ground (E1)sensor_groundEMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39Sensor Ground + Sensor Ground + Sensor Groundsensor_groundsingle_source
OEM-A36-3Power ground (E02)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-A36-30Engine coolant temperature (THW)temp_inEMUBLACK-Black-32IAT Intemp_insingle_source
OEM-A36-31Ignition coil 3 (IGT3)ignition_outEMUBLACK-Grey-9Ignition coil #3ignition_outsingle_source
OEM-A36-32Injector 3 port (#30)injector_outEMUBLACK-Grey-22Injector #6injector_outsingle_source
OEM-A36-4Power ground (E01)groundEMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24Power Ground + Ecu Ground + Power Ground + Power Groundgroundsingle_source
OEM-A36-5OCV exhaust bank 2 (OE2)low_side_out———single_source
OEM-A36-6Heated oxygen sensor heater (HT1B)low_side_out———single_source
OEM-A36-7OCV exhaust bank 1 (OE1)low_side_out———single_source
OEM-A36-8Ignition coil 4 (IGT4)ignition_outEMUBLACK-Black-14Ignition coil #4ignition_outsingle_source

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-A33-1SP-14V-10.85no routeECU power (+B2, main relay)—
W2OEM-A34-6SP-14V-10.85no routeECU power (+B, main relay)—
W3SP-14V-1EMUBLACK-Black-130.85no routeBattery +12V—
W4OEM-A33-4SP-GND-10.85no routePower ground (EC)—
W5OEM-A34-1SP-GND-10.85no routePower ground (E03)—
W6OEM-A34-2SP-GND-10.85no routePower ground (E04)—
W7OEM-A34-3SP-GND-10.85no routePower ground (E05)—
W8OEM-A36-3SP-GND-10.85no routePower ground (E02)—
W9OEM-A36-4SP-GND-10.85no routePower ground (E01)—
W10SP-GND-1EMUBLACK-Black-270.85no routePower Ground—
W11SP-GND-1EMUBLACK-Black-280.85no routeEcu Ground—
W12SP-GND-1EMUBLACK-Grey-170.85no routePower Ground—
W13SP-GND-1EMUBLACK-Grey-240.85no routePower Ground—
W14OEM-A33-29SP-0V-10.5no routeMAF sensor ground (E2G)—
W15OEM-A34-27SP-0V-10.5no routeCrank position return (NE-)—
W16OEM-A35-29SP-0V-10.5no routeAccelerator pedal ground (EPA)—
W17OEM-A35-30SP-0V-10.5no routeAccelerator pedal ground (EPA2)—
W18OEM-A36-29SP-0V-10.5no routeSensor ground (E1)—
W19SP-0V-1EMUBLACK-Black-290.5no routeSensor Ground—
W20SP-0V-1EMUBLACK-Black-380.5no routeSensor Ground—
W21SP-0V-1EMUBLACK-Black-390.5no routeSensor Ground—
W22OEM-A34-34SP-5V1-10.5no routeOCV power source (VCV, 5V)—
W23OEM-A35-21SP-5V1-10.5no routeAccelerator pedal 5V supply (VCPA)—
W24OEM-A35-22SP-5V1-10.5no routeAccelerator pedal 5V supply (VCP2)—
W25OEM-A36-19SP-5V1-10.5no routeSensor 5V supply (VC)—
W26SP-5V1-1EMUBLACK-Black-260.5no route+5V supply—
W27OEM-A34-16EMUBLACK-Black-80.5no routeCrank position (NE+)—
W28OEM-A34-14EMUBLACK-Black-210.5no routeVVT cam sensor exhaust bank 1 (EV1+)—
W29OEM-A34-26EMUBLACK-Black-70.5no routeVVT cam sensor intake bank 1 (VV1+)—
W30OEM-A34-25EMUBLACK-Black-200.5no routeVVT cam sensor exhaust bank 2 (EV2+)—
W31OEM-A34-28EMUBLACK-Black-30.5no routeKnock sensor 1 (KNK1)—
W32OEM-A34-17EMUBLACK-Black-160.5no routeKnock sensor 2 (KNK2)—
W33OEM-A36-21EMUBLACK-Grey-80.5no routeIgnition coil 1 (IGT1)—
W34OEM-A36-10EMUBLACK-Grey-160.5no routeIgnition coil 2 (IGT2)—
W35OEM-A36-31EMUBLACK-Grey-90.5no routeIgnition coil 3 (IGT3)—
W36OEM-A36-8EMUBLACK-Black-140.5no routeIgnition coil 4 (IGT4)—
W37OEM-A36-12EMUBLACK-Grey-70.5no routeInjector 1 port (#10)—
W38OEM-A36-14EMUBLACK-Grey-150.5no routeInjector 1 direct (#1)—
W39OEM-A36-22EMUBLACK-Grey-230.5no routeInjector 2 port (#20)—
W40OEM-A36-25EMUBLACK-Grey-60.5no routeInjector 2 direct (#2)—
W41OEM-A36-24EMUBLACK-Grey-140.5no routeInjector 3 direct (#3)—
W42OEM-A36-32EMUBLACK-Grey-220.5no routeInjector 3 port (#30)—
W43OEM-A33-27EMUBLACK-Grey-180.5no routeIgnition switch sense (IGSW, IG2 relay)—
W44OEM-A36-1EMUBLACK-Grey-100.5no routeThrottle actuator motor - (M-)—
W45OEM-A36-2EMUBLACK-Grey-20.5no routeThrottle actuator motor + (M+)—
W46OEM-A35-13EMUBLACK-Grey-210.5no routeEFI main relay 1 (SSHUT)—
W47OEM-A35-12EMUBLACK-Grey-130.5no routeCooling fan relay 2 (FAN2)—
W48OEM-A35-11EMUBLACK-Grey-50.5no routeCooling fan relay 3 (FAN1)—
W49OEM-A33-20EMUBLACK-Grey-200.5no routeBlower relay (HB)—
W50OEM-A35-17EMUBLACK-Grey-120.5no routeETCS relay (MCR)—
W51OEM-A35-35EMUBLACK-Grey-40.5no routeA/C clutch relay (AC)—
W52OEM-A35-5EMUBLACK-Grey-110.5no routeInjector relay (IREL)—
W53OEM-A35-7EMUBLACK-Grey-30.5no routeETCS relay (+BM)—
W54OEM-A34-5EMUBLACK-Grey-190.5no routeA/F ratio sensor heater (HA1A)—
W55OEM-A33-22EMUBLACK-Black-310.5no routeMass air flow (VG)—
W56OEM-A34-20EMUBLACK-Black-40.5no routeManifold absolute pressure (PIM)—
W57OEM-A35-31EMUBLACK-Black-180.5no routeAccelerator pedal position 2 (VPA2)—
W58OEM-A36-28EMUBLACK-Black-170.5no routeThrottle position 2 (VTA2)—
W59OEM-A35-23EMUBLACK-Black-300.5no routeAccelerator pedal position (VPA)—
W60OEM-A36-18EMUBLACK-Black-350.5no routeThrottle position (VTA1)—
W61OEM-A34-21EMUBLACK-Black-370.5no routeHeated oxygen sensor (OX1B, rear)—
W62OEM-A36-30EMUBLACK-Black-320.5no routeEngine coolant temperature (THW)—
W63OEM-A33-12EMUBLACK-Black-50.5no routeIntake air temperature (THA, in MAF)—
W64OEM-A36-20EMUBLACK-Black-90.5no routeOil temperature (OT)—
W65OEM-A33-14EMUBLACK-Black-100.5no routeStarter signal (STSW2)—
W66OEM-A33-15EMUBLACK-Black-230.5no routeClutch switch (CLSW)—
W67OEM-A33-16EMUBLACK-Black-360.5no routeNeutral switch (NSW)—
W68OEM-A33-19EMUBLACK-Black-120.5no routeCAN high (CANH)—
W69OEM-A33-18EMUBLACK-Black-250.5no routeCAN low (CANL)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (10)

SeverityCodeSubjectMessage
errorDBW_SENSOR_INPUTtpsOnly 1 throttle-position track(s) found. An electronic throttle needs two (main and sub) so the ECU can cross-check them.
errorREQUIRED_UNMAPPEDOEM-A36-13Required OEM function "Injector 4 port (#40)" (injector_out) is not connected to the new ECU.
warnDBW_MOTOR_CURRENTEMUBLACK-Grey-10Cannot confirm EMU Black can drive the throttle motor: EMUBLACK-Grey-10 "H-Bridge #1 Winding B" is rated 6.5 A, but the motor current at OEM-A36-1 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A).
warnDBW_MOTOR_CURRENTEMUBLACK-Grey-2Cannot confirm EMU Black can drive the throttle motor: EMUBLACK-Grey-2 "H-Bridge #1 Winding A" is rated 6.5 A, but the motor current at OEM-A36-2 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A).
warnNET_FAMILYOEM-A34-25 ↔ EMUBLACK-Black-20OEM-A34-25 "VVT cam sensor exhaust bank 2 (EV2+)" [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.
warnNET_FAMILYOEM-A35-5 ↔ EMUBLACK-Grey-11OEM-A35-5 "Injector relay (IREL)" [low_side_out] is wired to EMUBLACK-Grey-11 "H-Bridge #2 Winding B" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way.
warnNET_FAMILYOEM-A35-7 ↔ EMUBLACK-Grey-3OEM-A35-7 "ETCS relay (+BM)" [low_side_out] is wired to EMUBLACK-Grey-3 "H-Bridge #2 Winding A" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way.
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-A36-20 ↔ EMUBLACK-Black-9OEM-A36-20 "Oil temperature (OT)" [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.
infoUNMAPPEDOEM30 optional OEM pins are not mapped: OEM-A33-17 Starter signal (STSW2); OEM-A33-28 Shield ground (SLE2); OEM-A33-3 Stop light switch (ST1-); OEM-A33-7 Stop light switch (STP); OEM-A33-8 A/C pressure sensor (ACP); OEM-A34-11 DI injector confirmation (IJF1); OEM-A34-13 High-pressure fuel pump spill valve (FPF); OEM-A34-15 VVT cam sensor intake bank 2 (VV2+); OEM-A34-18 A/F ratio sensor (A1A-); OEM-A34-19 A/F ratio sensor (A1A+); OEM-A34-29 Shield ground (EKNK); OEM-A34-30 Shield ground (SLE1); OEM-A34-31 DI injector confirmation (IJF2); OEM-A34-32 High-pressure fuel pump spill valve (FPD); OEM-A34-35 Shield ground (SLE3); OEM-A34-9 Fuel pressure sensor (PR); OEM-A35-1 Canister vent valve (VPMP); OEM-A35-10 Fuel pump control monitor (DI); OEM-A35-15 Tachometer output (TACH); OEM-A35-19 Fuel pump control (FPC); OEM-A35-20 Canister pressure sensor (PPMP); OEM-A35-26 Starter signal (STA); OEM-A35-8 Leak detection pump (MPMP); OEM-A36-11 Purge valve (PRG); OEM-A36-16 OCV intake bank 2 (OC2); OEM-A36-17 OCV intake bank 1 (OC1); OEM-A36-23 Injector 4 direct (#4); OEM-A36-5 OCV exhaust bank 2 (OE2); OEM-A36-6 Heated oxygen sensor heater (HT1B); OEM-A36-7 OCV exhaust bank 1 (OE1)

Accepted (1)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-A33-2Battery-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 2026-10-09. Review every wire against both manuals before building. Open items: - OEM-A36 13: Injector 4 port (#40): no free injector output on ECUMASTER EMU Black Not wired: - OEM-A33 2: Battery constant (BATT, memory): ECUMASTER EMU Black has no battery-constant input; not needed - OEM-A34 15: VVT cam sensor intake bank 2 (VV2+): no free cam_hall/cam_vr/frequency_in input on ECUMASTER EMU Black - OEM-A36 23: Injector 4 direct (#4): no free injector output on ECUMASTER EMU Black - OEM-A33 28: Shield ground (SLE2): no shield pin on ECUMASTER EMU Black - OEM-A34 29: Shield ground (EKNK): no shield pin on ECUMASTER EMU Black - OEM-A34 30: Shield ground (SLE1): no shield pin on ECUMASTER EMU Black - OEM-A34 35: Shield ground (SLE3): no shield pin on ECUMASTER EMU Black - OEM-A36 6: Heated oxygen sensor heater (HT1B): no free heater_low_side/low_side/ls_hs/hbridge on ECUMASTER EMU Black - OEM-A36 17: OCV intake bank 1 (OC1): no free low_side/ls_hs/injector/hbridge on ECUMASTER EMU Black - OEM-A36 7: OCV exhaust bank 1 (OE1): no free low_side/ls_hs/injector/hbridge on ECUMASTER EMU Black - OEM-A36 16: OCV intake bank 2 (OC2): no free low_side/ls_hs/injector/hbridge on ECUMASTER EMU Black - OEM-A36 5: OCV exhaust bank 2 (OE2): no free low_side/ls_hs/injector/hbridge on ECUMASTER EMU Black - OEM-A34 13: High-pressure fuel pump spill valve (FPF): no free low_side/ls_hs/injector/hbridge on ECUMASTER EMU Black - OEM-A34 32: High-pressure fuel pump spill valve (FPD): no free low_side/ls_hs/injector/hbridge on ECUMASTER EMU Black - OEM-A35 1: Canister vent valve (VPMP): no free low_side/ls_hs/injector/hbridge on ECUMASTER EMU Black - OEM-A35 19: Fuel pump control (FPC): no free low_side/ls_hs/injector/hbridge on ECUMASTER EMU Black - OEM-A35 8: Leak detection pump (MPMP): no free low_side/ls_hs/injector/hbridge on ECUMASTER EMU Black - OEM-A36 11: Purge valve (PRG): no free low_side/ls_hs/injector/hbridge on ECUMASTER EMU Black - OEM-A35 15: Tachometer output (TACH): no free tacho/frequency_out/low_side/ls_hs on ECUMASTER EMU Black - OEM-A33 8: A/C pressure sensor (ACP): no free analog_0_5 on ECUMASTER EMU Black - OEM-A34 11: DI injector confirmation (IJF1): no free analog_0_5 on ECUMASTER EMU Black - OEM-A34 31: DI injector confirmation (IJF2): no free analog_0_5 on ECUMASTER EMU Black - OEM-A34 9: Fuel pressure sensor (PR): no free analog_0_5 on ECUMASTER EMU Black - OEM-A35 10: Fuel pump control monitor (DI): no free analog_0_5 on ECUMASTER EMU Black - OEM-A35 20: Canister pressure sensor (PPMP): no free analog_0_5 on ECUMASTER EMU Black - OEM-A33 17: Starter signal (STSW2): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-A33 3: Stop light switch (ST1-): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-A33 7: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-A35 26: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on ECUMASTER EMU Black - OEM-A34 18: A/F ratio sensor (A1A-): not classified in the library; wire by hand - OEM-A34 19: A/F ratio sensor (A1A+): not classified in the library; wire by hand

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
4vendor_docScion FR-S / Toyota 86 Repair Manual (2013) — FA20 ECM terminal pinout (SFI system)https://gt86.me/images/0/09/2013_Scion_FR-S_Repair_Manual.pdf———