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Toyota 86 (ZN6, FA20) → MaxxECU MaxxECU SPORT REV9+ (auto)

Toyota 86 (ZN6, FA20) — MaxxECU — MaxxECU SPORT
⚠ 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 errors3: read the Findings page before cutting any wire
Size of the job64 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-1MAXXECUSPORT-C1-M40.85☐☐☐☐☐☐☐
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-1MAXXECUSPORT-C1-L40.85☐☐☐☐☐☐☐
W11OEM-A33-29SP-0V-10.5☐☐☐☐☐☐☐
W12OEM-A34-27SP-0V-10.5☐☐☐☐☐☐☐
W13OEM-A35-29SP-0V-10.5☐☐☐☐☐☐☐
W14OEM-A35-30SP-0V-10.5☐☐☐☐☐☐☐
W15OEM-A36-29SP-0V-10.5☐☐☐☐☐☐☐
W16SP-0V-1MAXXECUSPORT-C1-H10.5☐☐☐☐☐☐☐
W17SP-0V-1MAXXECUSPORT-C1-H20.5☐☐☐☐☐☐☐
W18OEM-A34-34SP-5V1-10.5☐☐☐☐☐☐☐
W19OEM-A35-21SP-5V1-10.5☐☐☐☐☐☐☐
W20OEM-A35-22SP-5V1-10.5☐☐☐☐☐☐☐
W21OEM-A36-19SP-5V1-10.5☐☐☐☐☐☐☐
W22SP-5V1-1MAXXECUSPORT-C1-G10.5☐☐☐☐☐☐☐
W23OEM-A34-16MAXXECUSPORT-C1-H30.5☐☐☐☐☐☐☐
W24OEM-A34-14MAXXECUSPORT-C1-H40.5☐☐☐☐☐☐☐
W25OEM-A36-21MAXXECUSPORT-C1-A20.5☐☐☐☐☐☐☐
W26OEM-A36-10MAXXECUSPORT-C1-A30.5☐☐☐☐☐☐☐
W27OEM-A36-31MAXXECUSPORT-C1-B20.5☐☐☐☐☐☐☐
W28OEM-A36-8MAXXECUSPORT-C1-B30.5☐☐☐☐☐☐☐
W29OEM-A36-12MAXXECUSPORT-C1-K10.5☐☐☐☐☐☐☐
W30OEM-A36-14MAXXECUSPORT-C1-K20.5☐☐☐☐☐☐☐
W31OEM-A36-22MAXXECUSPORT-C1-M10.5☐☐☐☐☐☐☐
W32OEM-A36-25MAXXECUSPORT-C1-M20.5☐☐☐☐☐☐☐
W33OEM-A36-24MAXXECUSPORT-C1-M30.5☐☐☐☐☐☐☐
W34OEM-A36-32MAXXECUSPORT-C1-L30.5☐☐☐☐☐☐☐
W35OEM-A36-13MAXXECUSPORT-C1-K10.5☐☐☐☐☐☐☐
W36OEM-A36-23MAXXECUSPORT-C1-K20.5☐☐☐☐☐☐☐
W37OEM-A33-28SP-SHD-10.5☐☐☐☐☐☐☐
W38OEM-A34-29SP-SHD-10.5☐☐☐☐☐☐☐
W39OEM-A34-30SP-SHD-10.5☐☐☐☐☐☐☐
W40OEM-A34-35SP-SHD-10.5☐☐☐☐☐☐☐
W41SP-SHD-1MAXXECUSPORT-C1-E30.5☐☐☐☐☐☐☐
W42OEM-A36-1MAXXECUSPORT-C1-L10.5☐☐☐☐☐☐☐
W43OEM-A36-2MAXXECUSPORT-C1-L20.5☐☐☐☐☐☐☐
W44OEM-A35-13MAXXECUSPORT-C1-B40.5☐☐☐☐☐☐☐
W45OEM-A35-12MAXXECUSPORT-C1-C40.5☐☐☐☐☐☐☐
W46OEM-A35-11MAXXECUSPORT-C1-D40.5☐☐☐☐☐☐☐
W47OEM-A33-20MAXXECUSPORT-C1-A10.5☐☐☐☐☐☐☐
W48OEM-A35-17MAXXECUSPORT-C1-B10.5☐☐☐☐☐☐☐
W49OEM-A35-35MAXXECUSPORT-C1-A40.5☐☐☐☐☐☐☐
W50OEM-A34-5MAXXECUSPORT-C1-D10.5☐☐☐☐☐☐☐
W51OEM-A33-22MAXXECUSPORT-C1-J30.5☐☐☐☐☐☐☐
W52OEM-A34-20MAXXECUSPORT-C1-J40.5☐☐☐☐☐☐☐
W53OEM-A35-31MAXXECUSPORT-C1-G20.5☐☐☐☐☐☐☐
W54OEM-A36-28MAXXECUSPORT-C1-C10.5☐☐☐☐☐☐☐
W55OEM-A35-23MAXXECUSPORT-C1-D20.5☐☐☐☐☐☐☐
W56OEM-A36-18MAXXECUSPORT-C1-D30.5☐☐☐☐☐☐☐
W57OEM-A34-21MAXXECUSPORT-C1-E40.5☐☐☐☐☐☐☐
W58OEM-A36-30MAXXECUSPORT-C1-J10.5☐☐☐☐☐☐☐
W59OEM-A33-12MAXXECUSPORT-C1-J20.5☐☐☐☐☐☐☐
W60OEM-A36-20MAXXECUSPORT-C1-F10.5☐☐☐☐☐☐☐
W61OEM-A33-14MAXXECUSPORT-C1-K30.5☐☐☐☐☐☐☐
W62OEM-A33-15MAXXECUSPORT-C1-K40.5☐☐☐☐☐☐☐
W63OEM-A33-19MAXXECUSPORT-C1-E10.5☐☐☐☐☐☐☐
W64OEM-A33-18MAXXECUSPORT-C1-E20.5☐☐☐☐☐☐☐

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
1MAXXECUSPORT-C1-M4MAXXECUSPORT-C1-H1open (OL)+12 V supply must not touch sensor ground
2MAXXECUSPORT-C1-M4MAXXECUSPORT-C1-L4open (OL)+12 V supply must not touch power ground
3MAXXECUSPORT-C1-H1MAXXECUSPORT-C1-G1open (OL)sensor ground must not touch 5 V sensor reference
4MAXXECUSPORT-C1-L4MAXXECUSPORT-C1-G1open (OL)power ground must not touch 5 V sensor reference
5MAXXECUSPORT-C1-M4MAXXECUSPORT-C1-G1open (OL)+12 V supply must not touch 5 V sensor reference

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

Revisions

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Schematic

MAXXECUSPORT-C1OEM-A33OEM-A34OEM-A35OEM-A36SP-0VSP-14VSP-5V1SP-GNDSP-SHD

Connectors

MAXXECUSPORT-C1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
A1GPO 4—W47—0.5OEM-A33-20———
A2IGN 1—W25—0.5OEM-A36-21———
A3IGN 2—W26—0.5OEM-A36-10———
A4GPO 8/TACHO—W49—0.5OEM-A35-35———
B1GPO 5—W48—0.5OEM-A35-17———
B2IGN 3—W27—0.5OEM-A36-31———
B3IGN 4—W28—0.5OEM-A36-8———
B4GPO 1—W44—0.5OEM-A35-13———
C1AIN 5 (0-5V)—W54—0.5OEM-A36-28———
C2IGN 5————————
C3IGN 6————————
C4GPO 2—W45—0.5OEM-A35-12———
D1WBO2 Heater-—W50—0.5OEM-A34-5———
D2AIN 6 (0-5V)—W55—0.5OEM-A35-23———
D3AIN 7 (0-5V)—W56—0.5OEM-A36-18———
D4GPO 3—W46—0.5OEM-A35-11———
E1CAN H—W63—0.5OEM-A33-19———
E2CAN L—W64—0.5OEM-A33-18———
E3GND Shield—W41—0.5SP-SHD-1———
E4AIN 8 (0-5V)—W57—0.5OEM-A34-21———
F1CLT—W60—0.5OEM-A36-20———
F2IAT————————
F3WBO2 VREF————————
F4WBO2 VS————————
G1+5V sensor supply—W22—0.5SP-5V1-1———
G2TPS/AIN—W53—0.5OEM-A35-31———
G3WBO2 IP————————
G4WBO2 RCAL————————
H1Sensor GND—W16—0.5SP-0V-1———
H2Trigger GND—W17—0.5SP-0V-1———
H3TRIGGER—W23—0.5OEM-A34-16———
H4HOME—W24—0.5OEM-A34-14———
J1AIN 1 (temperature)—W58—0.5OEM-A36-30———
J2AIN 2 (Temperature)—W59—0.5OEM-A33-12———
J3AIN 3 (0-5V)—W51—0.5OEM-A33-22———
J4AIN 4 (0-5V)—W52—0.5OEM-A34-20———
K1INJ 1—W29—0.5OEM-A36-12———
K1INJ 1—W35—0.5OEM-A36-13———
K2INJ 2—W30—0.5OEM-A36-14———
K2INJ 2—W36—0.5OEM-A36-23———
K3DIN 1—W61—0.5OEM-A33-14———
K4DIN 2—W62—0.5OEM-A33-15———
L1GPO 11/Motor 1-—W42—0.5OEM-A36-1———
L2GPO 12/MOTOR 1+—W43—0.5OEM-A36-2———
L3INJ 6—W34—0.5OEM-A36-32———
L4Engine GND—W10—0.85SP-GND-1———
M1INJ 3—W31—0.5OEM-A36-22———
M2INJ 4—W32—0.5OEM-A36-25———
M3INJ 5—W33—0.5OEM-A36-24———
M4+12V ECU power supply—W3—0.85SP-14V-1———

OEM-A33

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1ECU power (+B2, main relay)—W1—0.85SP-14V-1———
12Intake air temperature (THA, in MAF)—W59—0.5MAXXECUSPORT-C1-J2———
14Starter signal (STSW2)—W61—0.5MAXXECUSPORT-C1-K3———
15Clutch switch (CLSW)—W62—0.5MAXXECUSPORT-C1-K4———
16Neutral switch (NSW)————————
17Starter signal (STSW2)————————
18CAN low (CANL)—W64—0.5MAXXECUSPORT-C1-E2———
19CAN high (CANH)—W63—0.5MAXXECUSPORT-C1-E1———
2Battery constant (BATT, memory)————————
20Blower relay (HB)—W47—0.5MAXXECUSPORT-C1-A1———
22Mass air flow (VG)—W51—0.5MAXXECUSPORT-C1-J3———
27Ignition switch sense (IGSW, IG2 relay)————————
28Shield ground (SLE2)—W37—0.5SP-SHD-1———
29MAF sensor ground (E2G)—W11—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+)—W24—0.5MAXXECUSPORT-C1-H4———
15VVT cam sensor intake bank 2 (VV2+)————————
16Crank position (NE+)—W23—0.5MAXXECUSPORT-C1-H3———
17Knock sensor 2 (KNK2)————————
18A/F ratio sensor (A1A-)————————
19A/F ratio sensor (A1A+)————————
2Power ground (E04)—W6—0.85SP-GND-1———
20Manifold absolute pressure (PIM)—W52—0.5MAXXECUSPORT-C1-J4———
21Heated oxygen sensor (OX1B, rear)—W57—0.5MAXXECUSPORT-C1-E4———
25VVT cam sensor exhaust bank 2 (EV2+)————————
26VVT cam sensor intake bank 1 (VV1+)————————
27Crank position return (NE-)—W12—0.5SP-0V-1———
28Knock sensor 1 (KNK1)————————
29Shield ground (EKNK)—W38—0.5SP-SHD-1———
3Power ground (E05)—W7—0.85SP-GND-1———
30Shield ground (SLE1)—W39—0.5SP-SHD-1———
31DI injector confirmation (IJF2)————————
32High-pressure fuel pump spill valve (FPD)————————
34OCV power source (VCV, 5V)—W18—0.5SP-5V1-1———
35Shield ground (SLE3)—W40—0.5SP-SHD-1———
5A/F ratio sensor heater (HA1A)—W50—0.5MAXXECUSPORT-C1-D1———
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)—W46—0.5MAXXECUSPORT-C1-D4———
12Cooling fan relay 2 (FAN2)—W45—0.5MAXXECUSPORT-C1-C4———
13EFI main relay 1 (SSHUT)—W44—0.5MAXXECUSPORT-C1-B4———
15Tachometer output (TACH)————————
17ETCS relay (MCR)—W48—0.5MAXXECUSPORT-C1-B1———
19Fuel pump control (FPC)————————
20Canister pressure sensor (PPMP)————————
21Accelerator pedal 5V supply (VCPA)—W19—0.5SP-5V1-1———
22Accelerator pedal 5V supply (VCP2)—W20—0.5SP-5V1-1———
23Accelerator pedal position (VPA)—W55—0.5MAXXECUSPORT-C1-D2———
26Starter signal (STA)————————
29Accelerator pedal ground (EPA)—W13—0.5SP-0V-1———
30Accelerator pedal ground (EPA2)—W14—0.5SP-0V-1———
31Accelerator pedal position 2 (VPA2)—W53—0.5MAXXECUSPORT-C1-G2———
35A/C clutch relay (AC)—W49—0.5MAXXECUSPORT-C1-A4———
5Injector relay (IREL)————————
7ETCS relay (+BM)————————
8Leak detection pump (MPMP)————————

OEM-A36

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Throttle actuator motor - (M-)—W42—0.5MAXXECUSPORT-C1-L1———
10Ignition coil 2 (IGT2)—W26—0.5MAXXECUSPORT-C1-A3———
11Purge valve (PRG)————————
12Injector 1 port (#10)—W29—0.5MAXXECUSPORT-C1-K1———
13Injector 4 port (#40)—W35—0.5MAXXECUSPORT-C1-K1———
14Injector 1 direct (#1)—W30—0.5MAXXECUSPORT-C1-K2———
16OCV intake bank 2 (OC2)————————
17OCV intake bank 1 (OC1)————————
18Throttle position (VTA1)—W56—0.5MAXXECUSPORT-C1-D3———
19Sensor 5V supply (VC)—W21—0.5SP-5V1-1———
2Throttle actuator motor + (M+)—W43—0.5MAXXECUSPORT-C1-L2———
20Oil temperature (OT)—W60—0.5MAXXECUSPORT-C1-F1———
21Ignition coil 1 (IGT1)—W25—0.5MAXXECUSPORT-C1-A2———
22Injector 2 port (#20)—W31—0.5MAXXECUSPORT-C1-M1———
23Injector 4 direct (#4)—W36—0.5MAXXECUSPORT-C1-K2———
24Injector 3 direct (#3)—W33—0.5MAXXECUSPORT-C1-M3———
25Injector 2 direct (#2)—W32—0.5MAXXECUSPORT-C1-M2———
28Throttle position 2 (VTA2)—W54—0.5MAXXECUSPORT-C1-C1———
29Sensor ground (E1)—W15—0.5SP-0V-1———
3Power ground (E02)—W8—0.85SP-GND-1———
30Engine coolant temperature (THW)—W58—0.5MAXXECUSPORT-C1-J1———
31Ignition coil 3 (IGT3)—W27—0.5MAXXECUSPORT-C1-B2———
32Injector 3 port (#30)—W34—0.5MAXXECUSPORT-C1-L3———
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)—W28—0.5MAXXECUSPORT-C1-B3———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W11—0.5OEM-A33-29———
1——W12—0.5OEM-A34-27———
1——W13—0.5OEM-A35-29———
1——W14—0.5OEM-A35-30———
1——W15—0.5OEM-A36-29———
1——W16—0.5MAXXECUSPORT-C1-H1———
1——W17—0.5MAXXECUSPORT-C1-H2———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-A33-1———
1——W2—0.85OEM-A34-6———
1——W3—0.85MAXXECUSPORT-C1-M4———

SP-5V1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W18—0.5OEM-A34-34———
1——W19—0.5OEM-A35-21———
1——W20—0.5OEM-A35-22———
1——W21—0.5OEM-A36-19———
1——W22—0.5MAXXECUSPORT-C1-G1———

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—0.85MAXXECUSPORT-C1-L4———

SP-SHD

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W37—0.5OEM-A33-28———
1——W38—0.5OEM-A34-29———
1——W39—0.5OEM-A34-30———
1——W40—0.5OEM-A34-35———
1——W41—0.5MAXXECUSPORT-C1-E3———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-A33-1ECU power (+B2, main relay)power_inMAXXECUSPORT-C1-M4+12V ECU power supplypower_insingle_source
OEM-A33-12Intake air temperature (THA, in MAF)temp_inMAXXECUSPORT-C1-J2AIN 2 (Temperature)temp_insingle_source
OEM-A33-14Starter signal (STSW2)digital_inMAXXECUSPORT-C1-K3DIN 1digital_insingle_source
OEM-A33-15Clutch switch (CLSW)digital_inMAXXECUSPORT-C1-K4DIN 2digital_insingle_source
OEM-A33-16Neutral switch (NSW)digital_in———single_source
OEM-A33-17Starter signal (STSW2)digital_in———single_source
OEM-A33-18CAN low (CANL)can_lMAXXECUSPORT-C1-E2CAN Lcan_lsingle_source
OEM-A33-19CAN high (CANH)can_hMAXXECUSPORT-C1-E1CAN Hcan_hsingle_source
OEM-A33-2Battery constant (BATT, memory)power_in———single_source
OEM-A33-20Blower relay (HB)low_side_outMAXXECUSPORT-C1-A1GPO 4low_side_outsingle_source
OEM-A33-22Mass air flow (VG)analog_inMAXXECUSPORT-C1-J3AIN 3 (0-5V)analog_insingle_source
OEM-A33-27Ignition switch sense (IGSW, IG2 relay)digital_in———single_source
OEM-A33-28Shield ground (SLE2)shieldMAXXECUSPORT-C1-E3GND Shieldshieldsingle_source
OEM-A33-29MAF sensor ground (E2G)sensor_groundMAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2Sensor GND + Trigger GNDsensor_groundsingle_source
OEM-A33-3Stop light switch (ST1-)digital_in———single_source
OEM-A33-4Power ground (EC)groundMAXXECUSPORT-C1-L4Engine GNDgroundsingle_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)groundMAXXECUSPORT-C1-L4Engine GNDgroundsingle_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_inMAXXECUSPORT-C1-H4HOMEtrigger_insingle_source
OEM-A34-15VVT cam sensor intake bank 2 (VV2+)trigger_in———single_source
OEM-A34-16Crank position (NE+)trigger_inMAXXECUSPORT-C1-H3TRIGGERtrigger_insingle_source
OEM-A34-17Knock sensor 2 (KNK2)knock_in———single_source
OEM-A34-18A/F ratio sensor (A1A-)————single_source
OEM-A34-19A/F ratio sensor (A1A+)————single_source
OEM-A34-2Power ground (E04)groundMAXXECUSPORT-C1-L4Engine GNDgroundsingle_source
OEM-A34-20Manifold absolute pressure (PIM)analog_inMAXXECUSPORT-C1-J4AIN 4 (0-5V)analog_insingle_source
OEM-A34-21Heated oxygen sensor (OX1B, rear)lambda_nb_inMAXXECUSPORT-C1-E4AIN 8 (0-5V)analog_insingle_source
OEM-A34-25VVT cam sensor exhaust bank 2 (EV2+)trigger_in———single_source
OEM-A34-26VVT cam sensor intake bank 1 (VV1+)trigger_in———single_source
OEM-A34-27Crank position return (NE-)sensor_groundMAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2Sensor GND + Trigger GNDsensor_groundsingle_source
OEM-A34-28Knock sensor 1 (KNK1)knock_in———single_source
OEM-A34-29Shield ground (EKNK)shieldMAXXECUSPORT-C1-E3GND Shieldshieldsingle_source
OEM-A34-3Power ground (E05)groundMAXXECUSPORT-C1-L4Engine GNDgroundsingle_source
OEM-A34-30Shield ground (SLE1)shieldMAXXECUSPORT-C1-E3GND Shieldshieldsingle_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)vrefMAXXECUSPORT-C1-G1+5V sensor supplyvrefsingle_source
OEM-A34-35Shield ground (SLE3)shieldMAXXECUSPORT-C1-E3GND Shieldshieldsingle_source
OEM-A34-5A/F ratio sensor heater (HA1A)low_side_outMAXXECUSPORT-C1-D1WBO2 Heater-low_side_outsingle_source
OEM-A34-6ECU power (+B, main relay)power_inMAXXECUSPORT-C1-M4+12V ECU power supplypower_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_outMAXXECUSPORT-C1-D4GPO 3low_side_outsingle_source
OEM-A35-12Cooling fan relay 2 (FAN2)low_side_outMAXXECUSPORT-C1-C4GPO 2low_side_outsingle_source
OEM-A35-13EFI main relay 1 (SSHUT)low_side_outMAXXECUSPORT-C1-B4GPO 1low_side_outsingle_source
OEM-A35-15Tachometer output (TACH)tacho_out———single_source
OEM-A35-17ETCS relay (MCR)low_side_outMAXXECUSPORT-C1-B1GPO 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)vrefMAXXECUSPORT-C1-G1+5V sensor supplyvrefsingle_source
OEM-A35-22Accelerator pedal 5V supply (VCP2)vrefMAXXECUSPORT-C1-G1+5V sensor supplyvrefsingle_source
OEM-A35-23Accelerator pedal position (VPA)analog_inMAXXECUSPORT-C1-D2AIN 6 (0-5V)analog_insingle_source
OEM-A35-26Starter signal (STA)digital_in———single_source
OEM-A35-29Accelerator pedal ground (EPA)sensor_groundMAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2Sensor GND + Trigger GNDsensor_groundsingle_source
OEM-A35-30Accelerator pedal ground (EPA2)sensor_groundMAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2Sensor GND + Trigger GNDsensor_groundsingle_source
OEM-A35-31Accelerator pedal position 2 (VPA2)analog_inMAXXECUSPORT-C1-G2TPS/AINanalog_insingle_source
OEM-A35-35A/C clutch relay (AC)low_side_outMAXXECUSPORT-C1-A4GPO 8/TACHOlow_side_outsingle_source
OEM-A35-5Injector relay (IREL)low_side_out———single_source
OEM-A35-7ETCS relay (+BM)low_side_out———single_source
OEM-A35-8Leak detection pump (MPMP)low_side_out———single_source
OEM-A36-1Throttle actuator motor - (M-)hbridge_outMAXXECUSPORT-C1-L1GPO 11/Motor 1-hbridge_outsingle_source
OEM-A36-10Ignition coil 2 (IGT2)ignition_outMAXXECUSPORT-C1-A3IGN 2ignition_outsingle_source
OEM-A36-11Purge valve (PRG)low_side_out———single_source
OEM-A36-12Injector 1 port (#10)injector_outMAXXECUSPORT-C1-K1INJ 1injector_outsingle_source
OEM-A36-13Injector 4 port (#40)injector_outMAXXECUSPORT-C1-K1INJ 1injector_outsingle_source
OEM-A36-14Injector 1 direct (#1)injector_outMAXXECUSPORT-C1-K2INJ 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_inMAXXECUSPORT-C1-D3AIN 7 (0-5V)analog_insingle_source
OEM-A36-19Sensor 5V supply (VC)vrefMAXXECUSPORT-C1-G1+5V sensor supplyvrefsingle_source
OEM-A36-2Throttle actuator motor + (M+)hbridge_outMAXXECUSPORT-C1-L2GPO 12/MOTOR 1+hbridge_outsingle_source
OEM-A36-20Oil temperature (OT)temp_inMAXXECUSPORT-C1-F1CLTtemp_insingle_source
OEM-A36-21Ignition coil 1 (IGT1)ignition_outMAXXECUSPORT-C1-A2IGN 1ignition_outsingle_source
OEM-A36-22Injector 2 port (#20)injector_outMAXXECUSPORT-C1-M1INJ 3injector_outsingle_source
OEM-A36-23Injector 4 direct (#4)injector_outMAXXECUSPORT-C1-K2INJ 2injector_outsingle_source
OEM-A36-24Injector 3 direct (#3)injector_outMAXXECUSPORT-C1-M3INJ 5injector_outsingle_source
OEM-A36-25Injector 2 direct (#2)injector_outMAXXECUSPORT-C1-M2INJ 4injector_outsingle_source
OEM-A36-28Throttle position 2 (VTA2)analog_inMAXXECUSPORT-C1-C1AIN 5 (0-5V)analog_insingle_source
OEM-A36-29Sensor ground (E1)sensor_groundMAXXECUSPORT-C1-H1 + MAXXECUSPORT-C1-H2Sensor GND + Trigger GNDsensor_groundsingle_source
OEM-A36-3Power ground (E02)groundMAXXECUSPORT-C1-L4Engine GNDgroundsingle_source
OEM-A36-30Engine coolant temperature (THW)temp_inMAXXECUSPORT-C1-J1AIN 1 (temperature)temp_insingle_source
OEM-A36-31Ignition coil 3 (IGT3)ignition_outMAXXECUSPORT-C1-B2IGN 3ignition_outsingle_source
OEM-A36-32Injector 3 port (#30)injector_outMAXXECUSPORT-C1-L3INJ 6injector_outsingle_source
OEM-A36-4Power ground (E01)groundMAXXECUSPORT-C1-L4Engine GNDgroundsingle_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_outMAXXECUSPORT-C1-B3IGN 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-1MAXXECUSPORT-C1-M40.85no route+12V ECU power supply—
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-1MAXXECUSPORT-C1-L40.85no routeEngine GND—
W11OEM-A33-29SP-0V-10.5no routeMAF sensor ground (E2G)—
W12OEM-A34-27SP-0V-10.5no routeCrank position return (NE-)—
W13OEM-A35-29SP-0V-10.5no routeAccelerator pedal ground (EPA)—
W14OEM-A35-30SP-0V-10.5no routeAccelerator pedal ground (EPA2)—
W15OEM-A36-29SP-0V-10.5no routeSensor ground (E1)—
W16SP-0V-1MAXXECUSPORT-C1-H10.5no routeSensor GND—
W17SP-0V-1MAXXECUSPORT-C1-H20.5no routeTrigger GND—
W18OEM-A34-34SP-5V1-10.5no routeOCV power source (VCV, 5V)—
W19OEM-A35-21SP-5V1-10.5no routeAccelerator pedal 5V supply (VCPA)—
W20OEM-A35-22SP-5V1-10.5no routeAccelerator pedal 5V supply (VCP2)—
W21OEM-A36-19SP-5V1-10.5no routeSensor 5V supply (VC)—
W22SP-5V1-1MAXXECUSPORT-C1-G10.5no route+5V sensor supply—
W23OEM-A34-16MAXXECUSPORT-C1-H30.5no routeCrank position (NE+)—
W24OEM-A34-14MAXXECUSPORT-C1-H40.5no routeVVT cam sensor exhaust bank 1 (EV1+)—
W25OEM-A36-21MAXXECUSPORT-C1-A20.5no routeIgnition coil 1 (IGT1)—
W26OEM-A36-10MAXXECUSPORT-C1-A30.5no routeIgnition coil 2 (IGT2)—
W27OEM-A36-31MAXXECUSPORT-C1-B20.5no routeIgnition coil 3 (IGT3)—
W28OEM-A36-8MAXXECUSPORT-C1-B30.5no routeIgnition coil 4 (IGT4)—
W29OEM-A36-12MAXXECUSPORT-C1-K10.5no routeInjector 1 port (#10)—
W30OEM-A36-14MAXXECUSPORT-C1-K20.5no routeInjector 1 direct (#1)—
W31OEM-A36-22MAXXECUSPORT-C1-M10.5no routeInjector 2 port (#20)—
W32OEM-A36-25MAXXECUSPORT-C1-M20.5no routeInjector 2 direct (#2)—
W33OEM-A36-24MAXXECUSPORT-C1-M30.5no routeInjector 3 direct (#3)—
W34OEM-A36-32MAXXECUSPORT-C1-L30.5no routeInjector 3 port (#30)—
W35OEM-A36-13MAXXECUSPORT-C1-K10.5no routeInjector 4 port (#40)—
W36OEM-A36-23MAXXECUSPORT-C1-K20.5no routeInjector 4 direct (#4)—
W37OEM-A33-28SP-SHD-10.5no routeShield ground (SLE2)—
W38OEM-A34-29SP-SHD-10.5no routeShield ground (EKNK)—
W39OEM-A34-30SP-SHD-10.5no routeShield ground (SLE1)—
W40OEM-A34-35SP-SHD-10.5no routeShield ground (SLE3)—
W41SP-SHD-1MAXXECUSPORT-C1-E30.5no routeGND Shield—
W42OEM-A36-1MAXXECUSPORT-C1-L10.5no routeThrottle actuator motor - (M-)—
W43OEM-A36-2MAXXECUSPORT-C1-L20.5no routeThrottle actuator motor + (M+)—
W44OEM-A35-13MAXXECUSPORT-C1-B40.5no routeEFI main relay 1 (SSHUT)—
W45OEM-A35-12MAXXECUSPORT-C1-C40.5no routeCooling fan relay 2 (FAN2)—
W46OEM-A35-11MAXXECUSPORT-C1-D40.5no routeCooling fan relay 3 (FAN1)—
W47OEM-A33-20MAXXECUSPORT-C1-A10.5no routeBlower relay (HB)—
W48OEM-A35-17MAXXECUSPORT-C1-B10.5no routeETCS relay (MCR)—
W49OEM-A35-35MAXXECUSPORT-C1-A40.5no routeA/C clutch relay (AC)—
W50OEM-A34-5MAXXECUSPORT-C1-D10.5no routeA/F ratio sensor heater (HA1A)—
W51OEM-A33-22MAXXECUSPORT-C1-J30.5no routeMass air flow (VG)—
W52OEM-A34-20MAXXECUSPORT-C1-J40.5no routeManifold absolute pressure (PIM)—
W53OEM-A35-31MAXXECUSPORT-C1-G20.5no routeAccelerator pedal position 2 (VPA2)—
W54OEM-A36-28MAXXECUSPORT-C1-C10.5no routeThrottle position 2 (VTA2)—
W55OEM-A35-23MAXXECUSPORT-C1-D20.5no routeAccelerator pedal position (VPA)—
W56OEM-A36-18MAXXECUSPORT-C1-D30.5no routeThrottle position (VTA1)—
W57OEM-A34-21MAXXECUSPORT-C1-E40.5no routeHeated oxygen sensor (OX1B, rear)—
W58OEM-A36-30MAXXECUSPORT-C1-J10.5no routeEngine coolant temperature (THW)—
W59OEM-A33-12MAXXECUSPORT-C1-J20.5no routeIntake air temperature (THA, in MAF)—
W60OEM-A36-20MAXXECUSPORT-C1-F10.5no routeOil temperature (OT)—
W61OEM-A33-14MAXXECUSPORT-C1-K30.5no routeStarter signal (STSW2)—
W62OEM-A33-15MAXXECUSPORT-C1-K40.5no routeClutch switch (CLSW)—
W63OEM-A33-19MAXXECUSPORT-C1-E10.5no routeCAN high (CANH)—
W64OEM-A33-18MAXXECUSPORT-C1-E20.5no routeCAN low (CANL)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (13)

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.
errorNET_MERGEDMAXXECUSPORT-C1-K1 + OEM-A36-12 + OEM-A36-132 different OEM functions share one net: OEM-A36-12 Injector 1 port (#10); OEM-A36-13 Injector 4 port (#40)
errorNET_MERGEDMAXXECUSPORT-C1-K2 + OEM-A36-14 + OEM-A36-232 different OEM functions share one net: OEM-A36-14 Injector 1 direct (#1); OEM-A36-23 Injector 4 direct (#4)
warnDBW_MOTOR_CURRENTMAXXECUSPORT-C1-L1Cannot confirm MaxxECU SPORT can drive the throttle motor: MAXXECUSPORT-C1-L1 "GPO 11/Motor 1-" is rated 2.0 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_CURRENTMAXXECUSPORT-C1-L2Cannot confirm MaxxECU SPORT can drive the throttle motor: MAXXECUSPORT-C1-L2 "GPO 12/MOTOR 1+" is rated 2.0 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).
warnLOAD_UNKNOWNMAXXECUSPORT-C1-A1MAXXECUSPORT-C1-A1 "GPO 4" drives OEM-A33-20 Blower relay (HB) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNMAXXECUSPORT-C1-A4MAXXECUSPORT-C1-A4 "GPO 8/TACHO" drives OEM-A35-35 A/C clutch relay (AC) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNMAXXECUSPORT-C1-B1MAXXECUSPORT-C1-B1 "GPO 5" drives OEM-A35-17 ETCS relay (MCR) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNMAXXECUSPORT-C1-B4MAXXECUSPORT-C1-B4 "GPO 1" drives OEM-A35-13 EFI main relay 1 (SSHUT) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNMAXXECUSPORT-C1-C4MAXXECUSPORT-C1-C4 "GPO 2" drives OEM-A35-12 Cooling fan relay 2 (FAN2) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNMAXXECUSPORT-C1-D4MAXXECUSPORT-C1-D4 "GPO 3" drives OEM-A35-11 Cooling fan relay 3 (FAN1) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
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.
infoUNMAPPEDOEM33 optional OEM pins are not mapped: OEM-A33-16 Neutral switch (NSW); OEM-A33-17 Starter signal (STSW2); OEM-A33-27 Ignition switch sense (IGSW, IG2 relay); 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-A34-17 Knock sensor 2 (KNK2); OEM-A34-18 A/F ratio sensor (A1A-); OEM-A34-19 A/F ratio sensor (A1A+); OEM-A34-25 VVT cam sensor exhaust bank 2 (EV2+); OEM-A34-26 VVT cam sensor intake bank 1 (VV1+); OEM-A34-28 Knock sensor 1 (KNK1); OEM-A34-31 DI injector confirmation (IJF2); OEM-A34-32 High-pressure fuel pump spill valve (FPD); 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-A35-5 Injector relay (IREL); OEM-A35-7 ETCS relay (+BM); 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-A36-5 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. Not wired: - OEM-A33 2: Battery constant (BATT, memory): MaxxECU MaxxECU SPORT has no battery-constant input; not needed - OEM-A34 26: VVT cam sensor intake bank 1 (VV1+): no free cam_hall/cam_vr/frequency_in input on MaxxECU MaxxECU SPORT - OEM-A34 25: VVT cam sensor exhaust bank 2 (EV2+): no free cam_hall/cam_vr/frequency_in input on MaxxECU MaxxECU SPORT - OEM-A34 15: VVT cam sensor intake bank 2 (VV2+): no free cam_hall/cam_vr/frequency_in input on MaxxECU MaxxECU SPORT - OEM-A34 28: Knock sensor 1 (KNK1): no free knock input on MaxxECU MaxxECU SPORT - OEM-A34 17: Knock sensor 2 (KNK2): no free knock input on MaxxECU MaxxECU SPORT - OEM-A33 27: Ignition switch sense (IGSW, IG2 relay): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); MaxxECU MaxxECU SPORT has no dedicated key-on input - OEM-A35 5: Injector relay (IREL): no free relay_control/low_side/ls_hs/injector/hbridge rated ≥ 0.2 A on MaxxECU MaxxECU SPORT - OEM-A35 7: ETCS relay (+BM): no free relay_control/low_side/ls_hs/injector/hbridge rated ≥ 0.2 A on MaxxECU MaxxECU SPORT - OEM-A36 6: Heated oxygen sensor heater (HT1B): no free heater_low_side/low_side/ls_hs/hbridge on MaxxECU MaxxECU SPORT - OEM-A36 17: OCV intake bank 1 (OC1): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A36 7: OCV exhaust bank 1 (OE1): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A36 16: OCV intake bank 2 (OC2): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A36 5: OCV exhaust bank 2 (OE2): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A34 13: High-pressure fuel pump spill valve (FPF): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A34 32: High-pressure fuel pump spill valve (FPD): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A35 1: Canister vent valve (VPMP): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A35 19: Fuel pump control (FPC): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A35 8: Leak detection pump (MPMP): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A36 11: Purge valve (PRG): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU SPORT - OEM-A35 15: Tachometer output (TACH): no free tacho/frequency_out/low_side/ls_hs on MaxxECU MaxxECU SPORT - OEM-A33 8: A/C pressure sensor (ACP): no free analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A34 11: DI injector confirmation (IJF1): no free analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A34 31: DI injector confirmation (IJF2): no free analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A34 9: Fuel pressure sensor (PR): no free analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A35 10: Fuel pump control monitor (DI): no free analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A35 20: Canister pressure sensor (PPMP): no free analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A33 16: Neutral switch (NSW): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A33 17: Starter signal (STSW2): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A33 3: Stop light switch (ST1-): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A33 7: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - OEM-A35 26: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU SPORT - 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_docMaxxECU GEN1 pinout (MINI / STREET / SPORT / V1 / RACE / PRO)http://www.maxxecu.com/webhelp/wirings-maxxecu_pinout.htmlarchive2026-10-052e37b6814690
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———