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Toyota Supra A80 1997-2002 JDM (2JZ-GTE VVT-i, single-turbo) → MoTeC M170 13170 (auto)

Toyota Supra A80 1997-2002 JDM (2JZ-GTE VVT-i, single-turbo) — MoTeC — M170
⚠ 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 job57 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-B78-16SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-B78-7SP-14V-10.85☐☐☐☐☐☐☐
W3OEM-B78-8SP-14V-10.85☐☐☐☐☐☐☐
W4SP-14V-1M170-A-230.85☐☐☐☐☐☐☐
W5SP-14V-1M170-A-320.85☐☐☐☐☐☐☐
W6SP-14V-1M170-A-410.85☐☐☐☐☐☐☐
W7OEM-B78-1M170-A-540.85☐☐☐☐☐☐☐
W8OEM-B74-21SP-GND-10.85☐☐☐☐☐☐☐
W9OEM-B74-31SP-GND-10.85☐☐☐☐☐☐☐
W10OEM-B74-9SP-GND-10.85☐☐☐☐☐☐☐
W11OEM-B75-17SP-GND-10.85☐☐☐☐☐☐☐
W12SP-GND-1M170-A-140.85☐☐☐☐☐☐☐
W13SP-GND-1M170-A-150.85☐☐☐☐☐☐☐
W14SP-GND-1M170-A-190.85☐☐☐☐☐☐☐
W15SP-GND-1M170-A-200.85☐☐☐☐☐☐☐
W16SP-GND-1M170-A-210.85☐☐☐☐☐☐☐
W17OEM-B74-22SP-0V-10.5☐☐☐☐☐☐☐
W18OEM-B75-18SP-0V-10.5☐☐☐☐☐☐☐
W19OEM-B75-19SP-0V-10.5☐☐☐☐☐☐☐
W20OEM-B78-22SP-0V-10.5☐☐☐☐☐☐☐
W21SP-0V-1M170-A-110.5☐☐☐☐☐☐☐
W22SP-0V-1M170-A-270.5☐☐☐☐☐☐☐
W23OEM-B75-2M170-A-160.5☐☐☐☐☐☐☐
W24OEM-B74-23M170-A-490.5☐☐☐☐☐☐☐
W25OEM-B74-10M170-A-560.5☐☐☐☐☐☐☐
W26OEM-B74-28M170-A-290.5☐☐☐☐☐☐☐
W27OEM-B74-27M170-A-600.5☐☐☐☐☐☐☐
W28OEM-B74-11M170-A-10.5☐☐☐☐☐☐☐
W29OEM-B74-12M170-A-50.5☐☐☐☐☐☐☐
W30OEM-B74-13M170-A-40.5☐☐☐☐☐☐☐
W31OEM-B75-5M170-A-330.5☐☐☐☐☐☐☐
W32OEM-B75-6M170-A-430.5☐☐☐☐☐☐☐
W33OEM-B74-1M170-A-500.5☐☐☐☐☐☐☐
W34OEM-B74-2M170-A-510.5☐☐☐☐☐☐☐
W35OEM-B74-3M170-A-630.5☐☐☐☐☐☐☐
W36OEM-B74-4M170-A-660.5☐☐☐☐☐☐☐
W37OEM-B74-17M170-A-240.5☐☐☐☐☐☐☐
W38OEM-B74-18M170-A-420.5☐☐☐☐☐☐☐
W39OEM-B74-19M170-A-570.5☐☐☐☐☐☐☐
W40OEM-B74-20M170-A-620.5☐☐☐☐☐☐☐
W41OEM-B75-9M170-A-260.5☐☐☐☐☐☐☐
W42OEM-B75-15M170-A-180.5☐☐☐☐☐☐☐
W43OEM-B75-23M170-A-60.5☐☐☐☐☐☐☐
W44OEM-B75-16M170-A-70.5☐☐☐☐☐☐☐
W45OEM-B75-24M170-A-120.5☐☐☐☐☐☐☐
W46OEM-B75-14M170-A-280.5☐☐☐☐☐☐☐
W47OEM-B75-10M170-A-360.5☐☐☐☐☐☐☐
W48OEM-B75-12M170-A-350.5☐☐☐☐☐☐☐
W49OEM-B75-22M170-A-380.5☐☐☐☐☐☐☐
W50OEM-B76-17M170-A-300.5☐☐☐☐☐☐☐
W51OEM-B77-25M170-A-460.5☐☐☐☐☐☐☐
W52OEM-B76-11M170-A-450.5☐☐☐☐☐☐☐
W53OEM-B76-5M170-A-520.5☐☐☐☐☐☐☐
W54OEM-B74-25M170-A-530.5☐☐☐☐☐☐☐
W55OEM-B76-10M170-A-130.5☐☐☐☐☐☐☐
W56OEM-B76-4M170-A-220.5☐☐☐☐☐☐☐
W57OEM-B75-21M170-A-440.5☐☐☐☐☐☐☐

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
1M170-A-11M170-A-16open (OL)sensor ground must not touch 5 V sensor reference
2M170-A-11M170-A-23open (OL)sensor ground must not touch +12 V supply
3M170-A-11M170-A-54open (OL)sensor ground must not touch +12 V supply
4M170-A-14M170-A-16open (OL)power ground must not touch 5 V sensor reference
5M170-A-14M170-A-23open (OL)power ground must not touch +12 V supply
6M170-A-14M170-A-54open (OL)power ground must not touch +12 V supply
7M170-A-16M170-A-23open (OL)5 V sensor reference must not touch +12 V supply
8M170-A-16M170-A-54open (OL)5 V sensor reference must not touch +12 V supply

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

Revisions

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Schematic

M170-AOEM-B74OEM-B75OEM-B76OEM-B77OEM-B78OEM-B79SP-0VSP-14VSP-GND

Connectors

M170-A

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Low Side Ignition 1—W28—0.5OEM-B74-11———
10Low Side Ignition 4————————
11Sensor 0V A—W21—0.5SP-0V-1———
12Analogue Voltage Input 5—W45—0.5OEM-B75-24———
13Universal Digital Input 7—W55—0.5OEM-B76-10———
14Battery Negative 1—W12—0.85SP-GND-1———
15Battery Negative 2—W13—0.85SP-GND-1———
16Sensor 5.0V A—W23—0.5OEM-B75-2———
17Low Side Ignition 5————————
18Analogue Voltage Input 2—W42—0.5OEM-B75-15———
19Battery Negative 3—W14—0.85SP-GND-1———
2Low Side Ignition 8————————
20Battery Negative 4—W15—0.85SP-GND-1———
21Battery Negative 5—W16—0.85SP-GND-1———
22Universal Digital Input 8—W56—0.5OEM-B76-4———
23Battery Positive—W4—0.85SP-14V-1———
24Peak Hold Injector 5—W37—0.5OEM-B74-17———
25Low Side Ignition 6————————
26Analogue Voltage Input 1—W41—0.5OEM-B75-9———
27Sensor 0V B—W22—0.5SP-0V-1———
28Analogue Temperature Input 1—W46—0.5OEM-B75-14———
29Knock Input 1—W26—0.5OEM-B74-28———
3Low Side Ignition 7————————
30Analogue Temperature Input 3—W50—0.5OEM-B76-17———
31CAN Bus 1 Low————————
32Battery Positive—W5—0.85SP-14V-1———
33Peak Hold Injector 1—W31—0.5OEM-B75-5———
34Sensor 5.0V B————————
35Analogue Voltage Input 7—W48—0.5OEM-B75-12———
36Analogue Voltage Input 6—W47—0.5OEM-B75-10———
37Sensor 6.3V————————
38Analogue Temperature Input 2—W49—0.5OEM-B75-22———
39Analogue Temperature Input 4————————
4Low Side Ignition 3—W30—0.5OEM-B74-13———
40CAN Bus 1 High————————
41Battery Positive—W6—0.85SP-14V-1———
42Peak Hold Injector 6—W38—0.5OEM-B74-18———
43Low Side Injector 1—W32—0.5OEM-B75-6———
44Analogue Voltage Input 8—W57—0.5OEM-B75-21———
45Universal Digital Input 4—W52—0.5OEM-B76-11———
46Universal Digital Input 3—W51—0.5OEM-B77-25———
47Ethernet Transmit -————————
48Ethernet Transmit +————————
49Universal Digital Input 1—W24—0.5OEM-B74-23———
5Low Side Ignition 2—W29—0.5OEM-B74-12———
50Peak Hold Injector 2—W33—0.5OEM-B74-1———
51Low Side Injector 2—W34—0.5OEM-B74-2———
52Universal Digital Input 5—W53—0.5OEM-B76-5———
53Universal Digital Input 6—W54—0.5OEM-B74-25———
54Battery Backup—W7—0.85OEM-B78-1———
55Ethernet Receive +————————
56Universal Digital Input 2—W25—0.5OEM-B74-10———
57Peak Hold Injector 7—W39—0.5OEM-B74-19———
58Half Bridge Output 5————————
59Half Bridge Output 3————————
6Analogue Voltage Input 3—W43—0.5OEM-B75-23———
60Knock Input 2—W27—0.5OEM-B74-27———
61Ethernet Receive -————————
62Peak Hold Injector 8—W40—0.5OEM-B74-20———
63Peak Hold Injector 3—W35—0.5OEM-B74-3———
64Half Bridge Output 6————————
65Half Bridge Output 4————————
66Peak Hold Injector 4—W36—0.5OEM-B74-4———
7Analogue Voltage Input 4—W44—0.5OEM-B75-16———
8Half Bridge Output 2————————
9Half Bridge Output 1————————

OEM-B74

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector 3 (#30)—W33—0.5M170-A-50———
10Cam position (G2)—W25—0.5M170-A-56———
11Ignition 1 (IGT, cyl 1&6)—W28—0.5M170-A-1———
12Ignition 2 (IGT2, cyl 5&2)—W29—0.5M170-A-5———
13Ignition 3 (IGT3, cyl 3&4)—W30—0.5M170-A-4———
15Wastegate VSV (PMC)————————
17VVT-i OCV - (OCV-)—W37—0.5M170-A-24———
18VVT-i OCV + (OCV+)—W38—0.5M170-A-42———
19ETCS-i clutch - (CL-)—W39—0.5M170-A-57———
2Injector 4 (#40)—W34—0.5M170-A-51———
20ETCS-i clutch + (CL+)—W40—0.5M170-A-62———
21Power ground (E01)—W8—0.85SP-GND-1———
22Crank/cam sensor return (NE-)—W17—0.5SP-0V-1———
23Crank position (NE+)—W24—0.5M170-A-49———
24Neutral/park switch (NSW)————————
25Igniter verification (IGF)—W54—0.5M170-A-53———
27Knock sensor 2 (KNK2, rear)—W27—0.5M170-A-60———
28Knock sensor 1 (KNK1, front)—W26—0.5M170-A-29———
3Injector 5 (#50)—W35—0.5M170-A-63———
30ETCS-i motor shield (GEO1)————————
31Power ground (E02)—W9—0.85SP-GND-1———
4Injector 6 (#60)—W36—0.5M170-A-66———
5Intake air bypass VSV (VSV1)————————
7ETCS-i motor - (M-)————————
8ETCS-i motor + (M+)————————
9ETCS-i ground (ME01)—W10—0.85SP-GND-1———

OEM-B75

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Mass air flow (VG)—W47—0.5M170-A-36———
12O2 sensor (OX)—W48—0.5M170-A-35———
14Coolant temperature (THW)—W46—0.5M170-A-28———
15Accelerator pedal 1 (VPA)—W42—0.5M170-A-18———
16Accelerator pedal 2 (VPA2)—W44—0.5M170-A-7———
17Power ground (E1)—W11—0.85SP-GND-1———
18Sensor ground (E2)—W18—0.5SP-0V-1———
19MAF ground (EVG)—W19—0.5SP-0V-1———
2Sensor power (VC)—W23—0.5M170-A-16———
20A/T 2nd-gear indicator (2)————————
21A/T 1st-gear indicator (L)—W57—0.5M170-A-44———
22Intake air temperature (THA)—W49—0.5M170-A-38———
23Throttle position 1 (VTA)—W43—0.5M170-A-6———
24Throttle position 2 (VTA2)—W45—0.5M170-A-12———
3Exhaust gas control VSV (VSV2)————————
4O2 sensor heater (HT)————————
5Injector 1 (#10)—W31—0.5M170-A-33———
6Injector 2 (#20)—W32—0.5M170-A-43———
7EVAP purge VSV (PRG)————————
8Main oil pressure switch (MOPS)————————
9Manifold pressure (PIM)—W41—0.5M170-A-26———

OEM-B76

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1A/T shift solenoid 1 (S1)————————
10OD direct-clutch speed (NCO-)—W55—0.5M170-A-13———
11No.2 speed sensor return (SP2-)—W52—0.5M170-A-45———
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)—W50—0.5M170-A-30———
2A/T shift solenoid 2 (S2)————————
3A/T shift solenoid 3 (S3)————————
4OD direct-clutch speed (NCO+)—W56—0.5M170-A-22———
5No.2 speed sensor (SP2+)—W53—0.5M170-A-52———
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)————————
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)—W51—0.5M170-A-46———
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)—W7—0.85M170-A-54———
10EFI main relay control (M-REL)————————
11Serial diagnostic (SIL)————————
16EFI main relay power (+B)—W1—0.85SP-14V-1———
2TRAC snow-mode light (SNOW)————————
22Switch ground (EC)—W20—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)————————

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——W17—0.5OEM-B74-22———
1——W18—0.5OEM-B75-18———
1——W19—0.5OEM-B75-19———
1——W20—0.5OEM-B78-22———
1——W21—0.5M170-A-11———
1——W22—0.5M170-A-27———

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—0.85M170-A-23———
1——W5—0.85M170-A-32———
1——W6—0.85M170-A-41———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W8—0.85OEM-B74-21———
1——W9—0.85OEM-B74-31———
1——W10—0.85OEM-B74-9———
1——W11—0.85OEM-B75-17———
1——W12—0.85M170-A-14———
1——W13—0.85M170-A-15———
1——W14—0.85M170-A-19———
1——W15—0.85M170-A-20———
1——W16—0.85M170-A-21———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-B74-1Injector 3 (#30)injector_outM170-A-50Peak Hold Injector 2injector_outsingle_source
OEM-B74-10Cam position (G2)trigger_inM170-A-56Universal Digital Input 2digital_insingle_source
OEM-B74-11Ignition 1 (IGT, cyl 1&6)ignition_outM170-A-1Low Side Ignition 1ignition_outsingle_source
OEM-B74-12Ignition 2 (IGT2, cyl 5&2)ignition_outM170-A-5Low Side Ignition 2ignition_outsingle_source
OEM-B74-13Ignition 3 (IGT3, cyl 3&4)ignition_outM170-A-4Low Side Ignition 3ignition_outsingle_source
OEM-B74-15Wastegate VSV (PMC)low_side_out———single_source
OEM-B74-17VVT-i OCV - (OCV-)low_side_outM170-A-24Peak Hold Injector 5injector_outsingle_source
OEM-B74-18VVT-i OCV + (OCV+)low_side_outM170-A-42Peak Hold Injector 6injector_outsingle_source
OEM-B74-19ETCS-i clutch - (CL-)low_side_outM170-A-57Peak Hold Injector 7injector_outsingle_source
OEM-B74-2Injector 4 (#40)injector_outM170-A-51Low Side Injector 2injector_outsingle_source
OEM-B74-20ETCS-i clutch + (CL+)low_side_outM170-A-62Peak Hold Injector 8injector_outsingle_source
OEM-B74-21Power ground (E01)groundM170-A-14 + M170-A-15 + M170-A-19 + M170-A-20 + M170-A-21Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5groundsingle_source
OEM-B74-22Crank/cam sensor return (NE-)sensor_groundM170-A-11 + M170-A-27Sensor 0V A + Sensor 0V Bsensor_groundsingle_source
OEM-B74-23Crank position (NE+)trigger_inM170-A-49Universal Digital Input 1digital_insingle_source
OEM-B74-24Neutral/park switch (NSW)digital_in———single_source
OEM-B74-25Igniter verification (IGF)digital_inM170-A-53Universal Digital Input 6digital_insingle_source
OEM-B74-27Knock sensor 2 (KNK2, rear)knock_inM170-A-60Knock Input 2knock_insingle_source
OEM-B74-28Knock sensor 1 (KNK1, front)knock_inM170-A-29Knock Input 1knock_insingle_source
OEM-B74-3Injector 5 (#50)injector_outM170-A-63Peak Hold Injector 3injector_outsingle_source
OEM-B74-30ETCS-i motor shield (GEO1)shield———single_source
OEM-B74-31Power ground (E02)groundM170-A-14 + M170-A-15 + M170-A-19 + M170-A-20 + M170-A-21Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5groundsingle_source
OEM-B74-4Injector 6 (#60)injector_outM170-A-66Peak Hold Injector 4injector_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)groundM170-A-14 + M170-A-15 + M170-A-19 + M170-A-20 + M170-A-21Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5groundsingle_source
OEM-B75-10Mass air flow (VG)analog_inM170-A-36Analogue Voltage Input 6analog_insingle_source
OEM-B75-12O2 sensor (OX)lambda_nb_inM170-A-35Analogue Voltage Input 7analog_insingle_source
OEM-B75-14Coolant temperature (THW)temp_inM170-A-28Analogue Temperature Input 1temp_insingle_source
OEM-B75-15Accelerator pedal 1 (VPA)analog_inM170-A-18Analogue Voltage Input 2analog_insingle_source
OEM-B75-16Accelerator pedal 2 (VPA2)analog_inM170-A-7Analogue Voltage Input 4analog_insingle_source
OEM-B75-17Power ground (E1)groundM170-A-14 + M170-A-15 + M170-A-19 + M170-A-20 + M170-A-21Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5groundsingle_source
OEM-B75-18Sensor ground (E2)sensor_groundM170-A-11 + M170-A-27Sensor 0V A + Sensor 0V Bsensor_groundsingle_source
OEM-B75-19MAF ground (EVG)sensor_groundM170-A-11 + M170-A-27Sensor 0V A + Sensor 0V Bsensor_groundsingle_source
OEM-B75-2Sensor power (VC)vrefM170-A-16Sensor 5.0V Avrefsingle_source
OEM-B75-20A/T 2nd-gear indicator (2)digital_in———single_source
OEM-B75-21A/T 1st-gear indicator (L)digital_inM170-A-44Analogue Voltage Input 8analog_insingle_source
OEM-B75-22Intake air temperature (THA)temp_inM170-A-38Analogue Temperature Input 2temp_insingle_source
OEM-B75-23Throttle position 1 (VTA)analog_inM170-A-6Analogue Voltage Input 3analog_insingle_source
OEM-B75-24Throttle position 2 (VTA2)analog_inM170-A-12Analogue Voltage Input 5analog_insingle_source
OEM-B75-3Exhaust gas control VSV (VSV2)low_side_out———single_source
OEM-B75-4O2 sensor heater (HT)low_side_out———single_source
OEM-B75-5Injector 1 (#10)injector_outM170-A-33Peak Hold Injector 1injector_outsingle_source
OEM-B75-6Injector 2 (#20)injector_outM170-A-43Low Side Injector 1injector_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_inM170-A-26Analogue Voltage Input 1analog_insingle_source
OEM-B76-1A/T shift solenoid 1 (S1)low_side_out———single_source
OEM-B76-10OD direct-clutch speed (NCO-)digital_inM170-A-13Universal Digital Input 7digital_insingle_source
OEM-B76-11No.2 speed sensor return (SP2-)digital_inM170-A-45Universal Digital Input 4digital_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_inM170-A-30Analogue Temperature Input 3temp_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_inM170-A-22Universal Digital Input 8digital_insingle_source
OEM-B76-5No.2 speed sensor (SP2+)digital_inM170-A-52Universal Digital Input 5digital_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_out———single_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_inM170-A-46Universal Digital Input 3digital_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_inM170-A-54Battery Backuppower_insingle_source
OEM-B78-10EFI main relay control (M-REL)low_side_out———single_source
OEM-B78-11Serial diagnostic (SIL)serial———single_source
OEM-B78-16EFI main relay power (+B)power_inM170-A-23 + M170-A-32 + M170-A-41Battery Positive + Battery Positive + Battery Positivepower_insingle_source
OEM-B78-2TRAC snow-mode light (SNOW)low_side_out———single_source
OEM-B78-22Switch ground (EC)sensor_groundM170-A-11 + M170-A-27Sensor 0V A + Sensor 0V Bsensor_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_inM170-A-23 + M170-A-32 + M170-A-41Battery Positive + Battery Positive + Battery Positivepower_insingle_source
OEM-B78-8EFI main relay power (+B2)power_inM170-A-23 + M170-A-32 + M170-A-41Battery Positive + Battery Positive + Battery Positivepower_insingle_source
OEM-B78-9Ignition switch (IGSW)digital_in———single_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-1M170-A-230.85no routeBattery Positive—
W5SP-14V-1M170-A-320.85no routeBattery Positive—
W6SP-14V-1M170-A-410.85no routeBattery Positive—
W7OEM-B78-1M170-A-540.85no routeBattery constant (BATT)—
W8OEM-B74-21SP-GND-10.85no routePower ground (E01)—
W9OEM-B74-31SP-GND-10.85no routePower ground (E02)—
W10OEM-B74-9SP-GND-10.85no routeETCS-i ground (ME01)—
W11OEM-B75-17SP-GND-10.85no routePower ground (E1)—
W12SP-GND-1M170-A-140.85no routeBattery Negative 1—
W13SP-GND-1M170-A-150.85no routeBattery Negative 2—
W14SP-GND-1M170-A-190.85no routeBattery Negative 3—
W15SP-GND-1M170-A-200.85no routeBattery Negative 4—
W16SP-GND-1M170-A-210.85no routeBattery Negative 5—
W17OEM-B74-22SP-0V-10.5no routeCrank/cam sensor return (NE-)—
W18OEM-B75-18SP-0V-10.5no routeSensor ground (E2)—
W19OEM-B75-19SP-0V-10.5no routeMAF ground (EVG)—
W20OEM-B78-22SP-0V-10.5no routeSwitch ground (EC)—
W21SP-0V-1M170-A-110.5no routeSensor 0V A—
W22SP-0V-1M170-A-270.5no routeSensor 0V B—
W23OEM-B75-2M170-A-160.5no routeSensor power (VC)—
W24OEM-B74-23M170-A-490.5no routeCrank position (NE+)—
W25OEM-B74-10M170-A-560.5no routeCam position (G2)—
W26OEM-B74-28M170-A-290.5no routeKnock sensor 1 (KNK1, front)—
W27OEM-B74-27M170-A-600.5no routeKnock sensor 2 (KNK2, rear)—
W28OEM-B74-11M170-A-10.5no routeIgnition 1 (IGT, cyl 1&6)—
W29OEM-B74-12M170-A-50.5no routeIgnition 2 (IGT2, cyl 5&2)—
W30OEM-B74-13M170-A-40.5no routeIgnition 3 (IGT3, cyl 3&4)—
W31OEM-B75-5M170-A-330.5no routeInjector 1 (#10)—
W32OEM-B75-6M170-A-430.5no routeInjector 2 (#20)—
W33OEM-B74-1M170-A-500.5no routeInjector 3 (#30)—
W34OEM-B74-2M170-A-510.5no routeInjector 4 (#40)—
W35OEM-B74-3M170-A-630.5no routeInjector 5 (#50)—
W36OEM-B74-4M170-A-660.5no routeInjector 6 (#60)—
W37OEM-B74-17M170-A-240.5no routeVVT-i OCV - (OCV-)—
W38OEM-B74-18M170-A-420.5no routeVVT-i OCV + (OCV+)—
W39OEM-B74-19M170-A-570.5no routeETCS-i clutch - (CL-)—
W40OEM-B74-20M170-A-620.5no routeETCS-i clutch + (CL+)—
W41OEM-B75-9M170-A-260.5no routeManifold pressure (PIM)—
W42OEM-B75-15M170-A-180.5no routeAccelerator pedal 1 (VPA)—
W43OEM-B75-23M170-A-60.5no routeThrottle position 1 (VTA)—
W44OEM-B75-16M170-A-70.5no routeAccelerator pedal 2 (VPA2)—
W45OEM-B75-24M170-A-120.5no routeThrottle position 2 (VTA2)—
W46OEM-B75-14M170-A-280.5no routeCoolant temperature (THW)—
W47OEM-B75-10M170-A-360.5no routeMass air flow (VG)—
W48OEM-B75-12M170-A-350.5no routeO2 sensor (OX)—
W49OEM-B75-22M170-A-380.5no routeIntake air temperature (THA)—
W50OEM-B76-17M170-A-300.5no routeA/T oil temperature (OIL)—
W51OEM-B77-25M170-A-460.5no routeNo.1 speed sensor (SPD)—
W52OEM-B76-11M170-A-450.5no routeNo.2 speed sensor return (SP2-)—
W53OEM-B76-5M170-A-520.5no routeNo.2 speed sensor (SP2+)—
W54OEM-B74-25M170-A-530.5no routeIgniter verification (IGF)—
W55OEM-B76-10M170-A-130.5no routeOD direct-clutch speed (NCO-)—
W56OEM-B76-4M170-A-220.5no routeOD direct-clutch speed (NCO+)—
W57OEM-B75-21M170-A-440.5no routeA/T 1st-gear indicator (L)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (12)

SeverityCodeSubjectMessage
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.
errorREQUIRED_UNMAPPEDOEM-B78-9Required OEM function "Ignition switch (IGSW)" (digital_in) is not connected to the new ECU.
warnNET_FAMILYOEM-B74-10 ↔ M170-A-56OEM-B74-10 "Cam position (G2)" [trigger_in] is wired to M170-A-56 "Universal Digital Input 2" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot.
warnNET_FAMILYOEM-B74-23 ↔ M170-A-49OEM-B74-23 "Crank position (NE+)" [trigger_in] is wired to M170-A-49 "Universal Digital Input 1" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot.
warnNET_FAMILYOEM-B75-21 ↔ M170-A-44OEM-B75-21 "A/T 1st-gear indicator (L)" [digital_in] is wired to M170-A-44 "Analogue Voltage Input 8" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value.
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-B74-17 ↔ M170-A-24OEM-B74-17 "VVT-i OCV - (OCV-)" [low_side_out] is wired to M170-A-24 "Peak Hold Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-B74-18 ↔ M170-A-42OEM-B74-18 "VVT-i OCV + (OCV+)" [low_side_out] is wired to M170-A-42 "Peak Hold Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-B74-19 ↔ M170-A-57OEM-B74-19 "ETCS-i clutch - (CL-)" [low_side_out] is wired to M170-A-57 "Peak Hold Injector 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-B74-20 ↔ M170-A-62OEM-B74-20 "ETCS-i clutch + (CL+)" [low_side_out] is wired to M170-A-62 "Peak Hold Injector 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
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-B75-3 Exhaust gas control VSV (VSV2); OEM-B75-4 O2 sensor heater (HT); 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-B76-12 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-B76-6 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-B77-13 A/C clutch relay (ACMG); 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-B78-10 EFI main relay control (M-REL); 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 (0)

CodeSubjectReasonBy

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-B78 9: Ignition switch (IGSW): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); MoTeC M170 has no dedicated key-on input - 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-B74 30: ETCS-i motor shield (GEO1): no shield pin on MoTeC M170 - OEM-B77 13: A/C clutch relay (ACMG): no free relay_control/low_side/heater_low_side/ls_hs/injector rated ≥ 0.2 A on MoTeC M170 - OEM-B78 10: EFI main relay control (M-REL): no free relay_control/low_side/heater_low_side/ls_hs/injector rated ≥ 0.2 A on MoTeC M170 - OEM-B75 4: O2 sensor heater (HT): no free heater_low_side/low_side/relay_control/ls_hs/injector on MoTeC M170 - OEM-B76 1: A/T shift solenoid 1 (S1): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B76 2: A/T shift solenoid 2 (S2): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B76 3: A/T shift solenoid 3 (S3): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B76 6: A/T shift solenoid 4 (S4): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B74 15: Wastegate VSV (PMC): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B74 5: Intake air bypass VSV (VSV1): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B75 3: Exhaust gas control VSV (VSV2): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B75 7: EVAP purge VSV (PRG): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B76 12: Exhaust bypass VSV (VSV3): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B76 13: A/T lock-up solenoid - (SLU-): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B76 14: A/T accumulator solenoid - (SLN-): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B76 15: A/T line-pressure solenoid - (SLT-): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B76 16: Fuel pressure-up VSV (FPU): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B76 7: A/T lock-up solenoid + (SLU+): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B76 8: A/T accumulator solenoid + (SLN+): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B76 9: A/T line-pressure solenoid + (SLT+): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B78 2: TRAC snow-mode light (SNOW): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B78 5: Fuel pump control (FPC): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B78 6: Check-engine light (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B79 1: TRAC enable light (IND): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B79 14: TRAC active light (CIND): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B79 17: A/T meter LCD (LPO3): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B79 18: A/T meter LCD (SPTL): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B79 19: Reverse buzzer (BZ): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B79 3: A/T meter LCD (LPO1): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B79 4: A/T meter LCD (LPO2): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-B77 20: Tachometer output (TACH): no free tacho/frequency_out/low_side/ls_hs on MoTeC M170 - OEM-B77 18: Rear right wheel speed (RRO): no free frequency_in/switch_in on MoTeC M170 - OEM-B77 19: Rear left wheel speed (RLO): no free frequency_in/switch_in on MoTeC M170 - OEM-B77 27: Road speed (RSPD): no free frequency_in/switch_in on MoTeC M170 - OEM-B78 4: Fuel pump diagnostic (DI): no free frequency_in/switch_in on MoTeC M170 - OEM-B79 7: Front right wheel speed (FRO): no free frequency_in/switch_in on MoTeC M170 - OEM-B79 8: Front left wheel speed (FLO): no free frequency_in/switch_in on MoTeC M170 - OEM-B75 20: A/T 2nd-gear indicator (2): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B74 24: Neutral/park switch (NSW): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B75 8: Main oil pressure switch (MOPS): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B77 1: A/C request (AC): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B77 14: A/T shift down (SFTD): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B77 16: A/T reverse indicator (R): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B77 2: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B77 21: ABS active (ABS): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B77 26: Electrical load sense (ELS): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B77 4: A/T shift up (SFTU): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B77 5: Diagnostic/timing check (TC): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B77 6: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B77 7: A/T manual position (3): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B78 3: TRAC snow-mode switch (SNWI): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B79 2: TRAC off switch (MSW): no free switch_in/frequency_in/analog_0_5 on MoTeC M170 - OEM-B78 11: Serial diagnostic (SIL): no free k_line on MoTeC M170

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docMoTeC: M1 ECU Hardware manual (7 Nov 2013) — M130/M150/M170/M190 pinout tableshttps://web.archive.org/web/2023id_/https://www.motec.com.au/hessian/uploads/M1_ECU_Hardware_c2517380e4.pdf—2026-10-0503dc5975f739
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———