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Lexus IS300 (XE10 / JCE10) 2001-05 2JZ-GE VVT-i → MoTeC M800 universal (auto)

Lexus IS300 (XE10 / JCE10) 2001-05 2JZ-GE VVT-i — MoTeC — M800
⚠ 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 job51 wires · 11 connectors · 3 part lines
ToolsCrimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink
Terminals3-1447221-4
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-E2-13SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-E3-16SP-14V-10.85☐☐☐☐☐☐☐
W3OEM-E3-7SP-14V-10.85☐☐☐☐☐☐☐
W4OEM-E3-8SP-14V-10.85☐☐☐☐☐☐☐
W5SP-14V-1M800-A-260.85☐☐☐☐☐☐☐
W6OEM-E6-17SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-E7-21SP-GND-10.85☐☐☐☐☐☐☐
W8SP-GND-1M800-A-100.85☐☐☐☐☐☐☐
W9SP-GND-1M800-A-110.85☐☐☐☐☐☐☐
W10OEM-E6-18SP-0V-10.5☐☐☐☐☐☐☐
W11OEM-E6-19SP-0V-10.5☐☐☐☐☐☐☐
W12OEM-E7-22SP-0V-10.5☐☐☐☐☐☐☐
W13SP-0V-1M800-B-140.5☐☐☐☐☐☐☐
W14SP-0V-1M800-B-150.5☐☐☐☐☐☐☐
W15SP-0V-1M800-B-160.5☐☐☐☐☐☐☐
W16OEM-E6-2M800-A-20.5☐☐☐☐☐☐☐
W17OEM-E7-23M800-B-10.5☐☐☐☐☐☐☐
W18OEM-E7-10M800-B-20.5☐☐☐☐☐☐☐
W19OEM-E7-11M800-A-30.5☐☐☐☐☐☐☐
W20OEM-E7-12M800-A-40.5☐☐☐☐☐☐☐
W21OEM-E7-13M800-A-50.5☐☐☐☐☐☐☐
W22OEM-E6-5M800-A-190.5☐☐☐☐☐☐☐
W23OEM-E6-6M800-A-200.5☐☐☐☐☐☐☐
W24OEM-E7-1M800-A-210.5☐☐☐☐☐☐☐
W25OEM-E7-2M800-A-220.5☐☐☐☐☐☐☐
W26OEM-E7-3M800-A-270.5☐☐☐☐☐☐☐
W27OEM-E7-4M800-A-280.5☐☐☐☐☐☐☐
W28OEM-E7-17M800-A-180.5☐☐☐☐☐☐☐
W29OEM-E7-18M800-A-10.5☐☐☐☐☐☐☐
W30OEM-E7-19M800-A-230.5☐☐☐☐☐☐☐
W31OEM-E7-20M800-A-240.5☐☐☐☐☐☐☐
W32OEM-E6-15M800-A-140.5☐☐☐☐☐☐☐
W33OEM-E6-23M800-A-150.5☐☐☐☐☐☐☐
W34OEM-E6-16M800-A-160.5☐☐☐☐☐☐☐
W35OEM-E6-24M800-A-170.5☐☐☐☐☐☐☐
W36OEM-E6-14M800-B-30.5☐☐☐☐☐☐☐
W37OEM-E3-10M800-A-310.5☐☐☐☐☐☐☐
W38OEM-E3-4M800-A-320.5☐☐☐☐☐☐☐
W39OEM-E4-13M800-A-330.5☐☐☐☐☐☐☐
W40OEM-E2-25M800-A-340.5☐☐☐☐☐☐☐
W41OEM-E2-26M800-A-290.5☐☐☐☐☐☐☐
W42OEM-E6-3M800-A-300.5☐☐☐☐☐☐☐
W43OEM-E6-10M800-A-250.5☐☐☐☐☐☐☐
W44OEM-E2-24M800-B-200.5☐☐☐☐☐☐☐
W45OEM-E4-8M800-B-210.5☐☐☐☐☐☐☐
W46OEM-E6-11M800-B-220.5☐☐☐☐☐☐☐
W47OEM-E6-22M800-B-40.5☐☐☐☐☐☐☐
W48OEM-E5-11M800-B-80.5☐☐☐☐☐☐☐
W49OEM-E5-5M800-B-90.5☐☐☐☐☐☐☐
W50OEM-E7-25M800-B-100.5☐☐☐☐☐☐☐
W51OEM-E4-2M800-B-110.5☐☐☐☐☐☐☐

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
1M800-A-26M800-A-10open (OL)+12 V supply must not touch power ground
2M800-A-26M800-B-14open (OL)+12 V supply must not touch sensor ground
3M800-A-10M800-A-2open (OL)power ground must not touch 5 V sensor reference
4M800-A-26M800-A-2open (OL)+12 V supply must not touch 5 V sensor reference
5M800-B-14M800-A-2open (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

M800-AM800-BOEM-E2OEM-E3OEM-E4OEM-E5OEM-E6OEM-E7SP-0VSP-14VSP-GND

Connectors

M800-A

Mating face
M800-A-1 · AUX21M800-A-2 · 5V Engine Sensor Supply2M800-A-3 · IGN13M800-A-4 · IGN24M800-A-5 · IGN35M800-A-6 · IGN46M800-A-7 · IGN57M800-A-8 · IGN68M800-A-9 · 5V Auxiliary Sensor Supply9M800-A-10 · GND Battery Negative10M800-A-11 · GND Battery Negative11M800-A-12 · 8V Engine Sensor Supply12M800-A-13 · 8V Auxiliary Sensor and CAN Supply13M800-A-14 · AV114M800-A-15 · Analog Voltage Input 215M800-A-16 · Analog Voltage Input 316M800-A-17 · Analog Voltage Input 417M800-A-18 · AUX118M800-A-19 · INJ119M800-A-20 · INJ220M800-A-21 · INJ321M800-A-22 · INJ422M800-A-23 · AUX323M800-A-24 · AUX424M800-A-25 · Analog Voltage Input 525M800-A-26 · VBAT Battery Positive26M800-A-27 · INJ527M800-A-28 · INJ628M800-A-29 · INJ729M800-A-30 · INJ830M800-A-31 · AUX531M800-A-32 · AUX632M800-A-33 · AUX733M800-A-34 · AUX834
Wire side
M800-A-1 · AUX21M800-A-2 · 5V Engine Sensor Supply2M800-A-3 · IGN13M800-A-4 · IGN24M800-A-5 · IGN35M800-A-6 · IGN46M800-A-7 · IGN57M800-A-8 · IGN68M800-A-9 · 5V Auxiliary Sensor Supply9M800-A-10 · GND Battery Negative10M800-A-11 · GND Battery Negative11M800-A-12 · 8V Engine Sensor Supply12M800-A-13 · 8V Auxiliary Sensor and CAN Supply13M800-A-14 · AV114M800-A-15 · Analog Voltage Input 215M800-A-16 · Analog Voltage Input 316M800-A-17 · Analog Voltage Input 417M800-A-18 · AUX118M800-A-19 · INJ119M800-A-20 · INJ220M800-A-21 · INJ321M800-A-22 · INJ422M800-A-23 · AUX323M800-A-24 · AUX424M800-A-25 · Analog Voltage Input 525M800-A-26 · VBAT Battery Positive26M800-A-27 · INJ527M800-A-28 · INJ628M800-A-29 · INJ729M800-A-30 · INJ830M800-A-31 · AUX531M800-A-32 · AUX632M800-A-33 · AUX733M800-A-34 · AUX834
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1AUX2—W29—0.5OEM-E7-18———
25V Engine Sensor Supply—W16—0.5OEM-E6-2———
3IGN1—W19—0.5OEM-E7-11———
4IGN2—W20—0.5OEM-E7-12———
5IGN3—W21—0.5OEM-E7-13———
6IGN4————————
7IGN5————————
8IGN6————————
95V Auxiliary Sensor Supply————————
10GND Battery Negative—W8—0.85SP-GND-1———
11GND Battery Negative—W9—0.85SP-GND-1———
128V Engine Sensor Supply————————
138V Auxiliary Sensor and CAN Supply————————
14AV1—W32—0.5OEM-E6-15———
15Analog Voltage Input 2—W33—0.5OEM-E6-23———
16Analog Voltage Input 3—W34—0.5OEM-E6-16———
17Analog Voltage Input 4—W35—0.5OEM-E6-24———
18AUX1—W28—0.5OEM-E7-17———
19INJ1—W22—0.5OEM-E6-5———
20INJ2—W23—0.5OEM-E6-6———
21INJ3—W24—0.5OEM-E7-1———
22INJ4—W25—0.5OEM-E7-2———
23AUX3—W30—0.5OEM-E7-19———
24AUX4—W31—0.5OEM-E7-20———
25Analog Voltage Input 5—W43—0.5OEM-E6-10———
26VBAT Battery Positive—W5—0.85SP-14V-1———
27INJ5—W26—0.5OEM-E7-3———
28INJ6—W27—0.5OEM-E7-4———
29INJ7—W41—0.5OEM-E2-26———
30INJ8—W42—0.5OEM-E6-3———
31AUX5—W37—0.5OEM-E3-10———
32AUX6—W38—0.5OEM-E3-4———
33AUX7—W39—0.5OEM-E4-13———
34AUX8—W40—0.5OEM-E2-25———

M800-B

Mating face
M800-B-1 · Crank Reference Timing Input1M800-B-2 · Cam Sync Timing Input2M800-B-3 · Analog Temperature Input 13M800-B-4 · Analog Temperature Input 24M800-B-5 · Analog Temperature Input 35M800-B-6 · Analog Temperature Input 46M800-B-7 · Analog Temperature Input 57M800-B-8 · Digital Input 18M800-B-9 · Digital Input 29M800-B-10 · Digital Input 310M800-B-11 · Digital Input 411M800-B-12 · Lambda2 Sense Voltage12M800-B-13 · Lambda2 Pump Current13M800-B-14 · 0V Comms Reference14M800-B-15 · 0V Auxiliary Sensor Supply15M800-B-16 · 0V Engine Sensor Supply16M800-B-17 · RS232 Transmit Data17M800-B-18 · RS232 Receive Data18M800-B-19 · Analog Temperature Input 619M800-B-20 · Analog Voltage Input 620M800-B-21 · AV721M800-B-22 · AV822M800-B-23 · CAN Bus High23M800-B-24 · CAN Bus Low24M800-B-25 · Lambda1 Sense Voltage25M800-B-26 · Lambda1 Pump Current26
Wire side
M800-B-1 · Crank Reference Timing Input1M800-B-2 · Cam Sync Timing Input2M800-B-3 · Analog Temperature Input 13M800-B-4 · Analog Temperature Input 24M800-B-5 · Analog Temperature Input 35M800-B-6 · Analog Temperature Input 46M800-B-7 · Analog Temperature Input 57M800-B-8 · Digital Input 18M800-B-9 · Digital Input 29M800-B-10 · Digital Input 310M800-B-11 · Digital Input 411M800-B-12 · Lambda2 Sense Voltage12M800-B-13 · Lambda2 Pump Current13M800-B-14 · 0V Comms Reference14M800-B-15 · 0V Auxiliary Sensor Supply15M800-B-16 · 0V Engine Sensor Supply16M800-B-17 · RS232 Transmit Data17M800-B-18 · RS232 Receive Data18M800-B-19 · Analog Temperature Input 619M800-B-20 · Analog Voltage Input 620M800-B-21 · AV721M800-B-22 · AV822M800-B-23 · CAN Bus High23M800-B-24 · CAN Bus Low24M800-B-25 · Lambda1 Sense Voltage25M800-B-26 · Lambda1 Pump Current26
CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Crank Reference Timing Input—W17—0.5OEM-E7-23———
2Cam Sync Timing Input—W18—0.5OEM-E7-10———
3Analog Temperature Input 1—W36—0.5OEM-E6-14———
4Analog Temperature Input 2—W47—0.5OEM-E6-22———
5Analog Temperature Input 3————————
6Analog Temperature Input 4————————
7Analog Temperature Input 5————————
8Digital Input 1—W48—0.5OEM-E5-11———
9Digital Input 2—W49—0.5OEM-E5-5———
10Digital Input 3—W50—0.5OEM-E7-25———
11Digital Input 4—W51—0.5OEM-E4-2———
12Lambda2 Sense Voltage————————
13Lambda2 Pump Current————————
140V Comms Reference—W13—0.5SP-0V-1———
150V Auxiliary Sensor Supply—W14—0.5SP-0V-1———
160V Engine Sensor Supply—W15—0.5SP-0V-1———
17RS232 Transmit Data————————
18RS232 Receive Data————————
19Analog Temperature Input 6————————
20Analog Voltage Input 6—W44—0.5OEM-E2-24———
21AV7—W45—0.5OEM-E4-8———
22AV8—W46—0.5OEM-E6-11———
23CAN Bus High————————
24CAN Bus Low————————
25Lambda1 Sense Voltage————————
26Lambda1 Pump Current————————

OEM-E2

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
13ETCS power (TBP, throttle bypass)—W1—0.85SP-14V-1———
24O2 right rear (OXR2)—W44—0.5M800-B-20———
25O2 heater right rear (HTR2)—W40—0.5M800-A-34———
26O2 heater left rear (HTL2)—W41—0.5M800-A-29———

OEM-E3

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Battery constant (BATT)————————
10EFI main relay control (MREL)—W37—0.5M800-A-31———
11Serial diagnostic (SIL)————————
16EFI main relay (+B)—W2—0.85SP-14V-1———
4Fuel pump relay (FPR)—W38—0.5M800-A-32———
5Fuel pump control (FC)————————
6Check-engine lamp (W)————————
7ETCS main relay (+BM)—W3—0.85SP-14V-1———
8EFI main relay (+B2)—W4—0.85SP-14V-1———
9Ignition switch (IGSW)————————

OEM-E4

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
13A/C clutch relay (ACMG)—W39—0.5M800-A-33———
18EVAP vapor pressure (PTNK)————————
2Starter signal (STA)—W51—0.5M800-B-11———
5Diagnostic/timing check (TC)————————
6Stop light switch (STP)————————
8O2 left rear (OXL2)—W45—0.5M800-B-21———

OEM-E5

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
11Vehicle speed sensor (SP2-)—W48—0.5M800-B-8———
12Canister close valve (CCV)————————
5Vehicle speed sensor (SP2+)—W49—0.5M800-B-9———

OEM-E6

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Mass air flow (VG)—W43—0.5M800-A-25———
11O2 right front (OXR1)—W46—0.5M800-B-22———
12O2 left front (OXL1)————————
14Coolant temperature (THW)—W36—0.5M800-B-3———
15Accelerator pedal 1 (VPA)—W32—0.5M800-A-14———
16Accelerator pedal 2 (VPA2)—W34—0.5M800-A-16———
17Power ground (E1)—W6—0.85SP-GND-1———
18Sensor ground (E2)—W10—0.5SP-0V-1———
19MAF ground (EVG)—W11—0.5SP-0V-1———
2Sensor supply +5V (VC)—W16—0.5M800-A-2———
22Intake air temperature (THA)—W47—0.5M800-B-4———
23Throttle position 1 (VTA)—W33—0.5M800-A-15———
24Throttle position 2 (VTA2)—W35—0.5M800-A-17———
3O2 heater right front (HTR)—W42—0.5M800-A-30———
4O2 heater left front (HTL)————————
5Injector 1 (#10)—W22—0.5M800-A-19———
6Injector 2 (#20)—W23—0.5M800-A-20———
7EVAP purge VSV (PRG)————————

OEM-E7

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector 3 (#30)—W24—0.5M800-A-21———
10Cam position (G2)—W18—0.5M800-B-2———
11Ignition 1 (IGT)—W19—0.5M800-A-3———
12Ignition 2 (IGT2)—W20—0.5M800-A-4———
13Ignition 3 (IGT3)—W21—0.5M800-A-5———
17VVT-i OCV - (OCV-)—W28—0.5M800-A-18———
18VVT-i OCV + (OCV+)—W29—0.5M800-A-1———
19ETCS throttle clutch - (CL-)—W30—0.5M800-A-23———
2Injector 4 (#40)—W25—0.5M800-A-22———
20ETCS throttle clutch + (CL+)—W31—0.5M800-A-24———
21Power ground (E01)—W7—0.85SP-GND-1———
22Crank position return (NE-)—W12—0.5SP-0V-1———
23Crank position (NE)—W17—0.5M800-B-1———
25Igniter feedback (IGF)—W50—0.5M800-B-10———
27Knock sensor 2 (KNK2)————————
28Knock sensor 1 (KNK1)————————
3Injector 5 (#50)—W26—0.5M800-A-27———
4Injector 6 (#60)—W27—0.5M800-A-28———
5ACIS intake VSV————————
7ETCS throttle motor - (M-)————————
8ETCS throttle motor + (M+)————————

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W10—0.5OEM-E6-18———
1——W11—0.5OEM-E6-19———
1——W12—0.5OEM-E7-22———
1——W13—0.5M800-B-14———
1——W14—0.5M800-B-15———
1——W15—0.5M800-B-16———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-E2-13———
1——W2—0.85OEM-E3-16———
1——W3—0.85OEM-E3-7———
1——W4—0.85OEM-E3-8———
1——W5—0.85M800-A-26———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W6—0.85OEM-E6-17———
1——W7—0.85OEM-E7-21———
1——W8—0.85M800-A-10———
1——W9—0.85M800-A-11———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-E2-13ETCS power (TBP, throttle bypass)power_inM800-A-26VBAT Battery Positivepower_insingle_source
OEM-E2-24O2 right rear (OXR2)lambda_nb_inM800-B-20Analog Voltage Input 6analog_insingle_source
OEM-E2-25O2 heater right rear (HTR2)low_side_outM800-A-34AUX8switch_outsingle_source
OEM-E2-26O2 heater left rear (HTL2)low_side_outM800-A-29INJ7injector_outsingle_source
OEM-E3-1Battery constant (BATT)power_in———single_source
OEM-E3-10EFI main relay control (MREL)low_side_outM800-A-31AUX5switch_outsingle_source
OEM-E3-11Serial diagnostic (SIL)serial———single_source
OEM-E3-16EFI main relay (+B)power_inM800-A-26VBAT Battery Positivepower_insingle_source
OEM-E3-4Fuel pump relay (FPR)low_side_outM800-A-32AUX6switch_outsingle_source
OEM-E3-5Fuel pump control (FC)low_side_out———single_source
OEM-E3-6Check-engine lamp (W)low_side_out———single_source
OEM-E3-7ETCS main relay (+BM)power_inM800-A-26VBAT Battery Positivepower_insingle_source
OEM-E3-8EFI main relay (+B2)power_inM800-A-26VBAT Battery Positivepower_insingle_source
OEM-E3-9Ignition switch (IGSW)digital_in———single_source
OEM-E4-13A/C clutch relay (ACMG)low_side_outM800-A-33AUX7switch_outsingle_source
OEM-E4-18EVAP vapor pressure (PTNK)analog_in———single_source
OEM-E4-2Starter signal (STA)digital_inM800-B-11Digital Input 4digital_insingle_source
OEM-E4-5Diagnostic/timing check (TC)digital_in———single_source
OEM-E4-6Stop light switch (STP)digital_in———single_source
OEM-E4-8O2 left rear (OXL2)lambda_nb_inM800-B-21AV7analog_insingle_source
OEM-E5-11Vehicle speed sensor (SP2-)digital_inM800-B-8Digital Input 1digital_insingle_source
OEM-E5-12Canister close valve (CCV)low_side_out———single_source
OEM-E5-5Vehicle speed sensor (SP2+)digital_inM800-B-9Digital Input 2digital_insingle_source
OEM-E6-10Mass air flow (VG)analog_inM800-A-25Analog Voltage Input 5analog_insingle_source
OEM-E6-11O2 right front (OXR1)lambda_nb_inM800-B-22AV8analog_insingle_source
OEM-E6-12O2 left front (OXL1)lambda_nb_in———single_source
OEM-E6-14Coolant temperature (THW)temp_inM800-B-3Analog Temperature Input 1temp_insingle_source
OEM-E6-15Accelerator pedal 1 (VPA)analog_inM800-A-14AV1analog_insingle_source
OEM-E6-16Accelerator pedal 2 (VPA2)analog_inM800-A-16Analog Voltage Input 3analog_insingle_source
OEM-E6-17Power ground (E1)groundM800-A-10 + M800-A-11GND Battery Negative + GND Battery Negativegroundsingle_source
OEM-E6-18Sensor ground (E2)sensor_groundM800-B-14 + M800-B-15 + M800-B-160V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supplysensor_groundsingle_source
OEM-E6-19MAF ground (EVG)sensor_groundM800-B-14 + M800-B-15 + M800-B-160V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supplysensor_groundsingle_source
OEM-E6-2Sensor supply +5V (VC)vrefM800-A-25V Engine Sensor Supplyvrefsingle_source
OEM-E6-22Intake air temperature (THA)temp_inM800-B-4Analog Temperature Input 2temp_insingle_source
OEM-E6-23Throttle position 1 (VTA)analog_inM800-A-15Analog Voltage Input 2analog_insingle_source
OEM-E6-24Throttle position 2 (VTA2)analog_inM800-A-17Analog Voltage Input 4analog_insingle_source
OEM-E6-3O2 heater right front (HTR)low_side_outM800-A-30INJ8injector_outsingle_source
OEM-E6-4O2 heater left front (HTL)low_side_out———single_source
OEM-E6-5Injector 1 (#10)injector_outM800-A-19INJ1injector_outsingle_source
OEM-E6-6Injector 2 (#20)injector_outM800-A-20INJ2injector_outsingle_source
OEM-E6-7EVAP purge VSV (PRG)low_side_out———single_source
OEM-E7-1Injector 3 (#30)injector_outM800-A-21INJ3injector_outsingle_source
OEM-E7-10Cam position (G2)trigger_inM800-B-2Cam Sync Timing Inputtrigger_insingle_source
OEM-E7-11Ignition 1 (IGT)ignition_outM800-A-3IGN1ignition_outsingle_source
OEM-E7-12Ignition 2 (IGT2)ignition_outM800-A-4IGN2ignition_outsingle_source
OEM-E7-13Ignition 3 (IGT3)ignition_outM800-A-5IGN3ignition_outsingle_source
OEM-E7-17VVT-i OCV - (OCV-)low_side_outM800-A-18AUX1switch_outsingle_source
OEM-E7-18VVT-i OCV + (OCV+)low_side_outM800-A-1AUX2switch_outsingle_source
OEM-E7-19ETCS throttle clutch - (CL-)low_side_outM800-A-23AUX3switch_outsingle_source
OEM-E7-2Injector 4 (#40)injector_outM800-A-22INJ4injector_outsingle_source
OEM-E7-20ETCS throttle clutch + (CL+)low_side_outM800-A-24AUX4switch_outsingle_source
OEM-E7-21Power ground (E01)groundM800-A-10 + M800-A-11GND Battery Negative + GND Battery Negativegroundsingle_source
OEM-E7-22Crank position return (NE-)sensor_groundM800-B-14 + M800-B-15 + M800-B-160V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supplysensor_groundsingle_source
OEM-E7-23Crank position (NE)trigger_inM800-B-1Crank Reference Timing Inputtrigger_insingle_source
OEM-E7-25Igniter feedback (IGF)digital_inM800-B-10Digital Input 3digital_insingle_source
OEM-E7-27Knock sensor 2 (KNK2)knock_in———single_source
OEM-E7-28Knock sensor 1 (KNK1)knock_in———single_source
OEM-E7-3Injector 5 (#50)injector_outM800-A-27INJ5injector_outsingle_source
OEM-E7-4Injector 6 (#60)injector_outM800-A-28INJ6injector_outsingle_source
OEM-E7-5ACIS intake VSVlow_side_out———single_source
OEM-E7-7ETCS throttle motor - (M-)hbridge_out———single_source
OEM-E7-8ETCS throttle motor + (M+)hbridge_out———single_source

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-E2-13SP-14V-10.85no routeETCS power (TBP, throttle bypass)—
W2OEM-E3-16SP-14V-10.85no routeEFI main relay (+B)—
W3OEM-E3-7SP-14V-10.85no routeETCS main relay (+BM)—
W4OEM-E3-8SP-14V-10.85no routeEFI main relay (+B2)—
W5SP-14V-1M800-A-260.85no routeVBAT Battery Positive—
W6OEM-E6-17SP-GND-10.85no routePower ground (E1)—
W7OEM-E7-21SP-GND-10.85no routePower ground (E01)—
W8SP-GND-1M800-A-100.85no routeGND Battery Negative—
W9SP-GND-1M800-A-110.85no routeGND Battery Negative—
W10OEM-E6-18SP-0V-10.5no routeSensor ground (E2)—
W11OEM-E6-19SP-0V-10.5no routeMAF ground (EVG)—
W12OEM-E7-22SP-0V-10.5no routeCrank position return (NE-)—
W13SP-0V-1M800-B-140.5no route0V Comms Reference—
W14SP-0V-1M800-B-150.5no route0V Auxiliary Sensor Supply—
W15SP-0V-1M800-B-160.5no route0V Engine Sensor Supply—
W16OEM-E6-2M800-A-20.5no routeSensor supply +5V (VC)—
W17OEM-E7-23M800-B-10.5no routeCrank position (NE)—
W18OEM-E7-10M800-B-20.5no routeCam position (G2)—
W19OEM-E7-11M800-A-30.5no routeIgnition 1 (IGT)—
W20OEM-E7-12M800-A-40.5no routeIgnition 2 (IGT2)—
W21OEM-E7-13M800-A-50.5no routeIgnition 3 (IGT3)—
W22OEM-E6-5M800-A-190.5no routeInjector 1 (#10)—
W23OEM-E6-6M800-A-200.5no routeInjector 2 (#20)—
W24OEM-E7-1M800-A-210.5no routeInjector 3 (#30)—
W25OEM-E7-2M800-A-220.5no routeInjector 4 (#40)—
W26OEM-E7-3M800-A-270.5no routeInjector 5 (#50)—
W27OEM-E7-4M800-A-280.5no routeInjector 6 (#60)—
W28OEM-E7-17M800-A-180.5no routeVVT-i OCV - (OCV-)—
W29OEM-E7-18M800-A-10.5no routeVVT-i OCV + (OCV+)—
W30OEM-E7-19M800-A-230.5no routeETCS throttle clutch - (CL-)—
W31OEM-E7-20M800-A-240.5no routeETCS throttle clutch + (CL+)—
W32OEM-E6-15M800-A-140.5no routeAccelerator pedal 1 (VPA)—
W33OEM-E6-23M800-A-150.5no routeThrottle position 1 (VTA)—
W34OEM-E6-16M800-A-160.5no routeAccelerator pedal 2 (VPA2)—
W35OEM-E6-24M800-A-170.5no routeThrottle position 2 (VTA2)—
W36OEM-E6-14M800-B-30.5no routeCoolant temperature (THW)—
W37OEM-E3-10M800-A-310.5no routeEFI main relay control (MREL)—
W38OEM-E3-4M800-A-320.5no routeFuel pump relay (FPR)—
W39OEM-E4-13M800-A-330.5no routeA/C clutch relay (ACMG)—
W40OEM-E2-25M800-A-340.5no routeO2 heater right rear (HTR2)—
W41OEM-E2-26M800-A-290.5no routeO2 heater left rear (HTL2)—
W42OEM-E6-3M800-A-300.5no routeO2 heater right front (HTR)—
W43OEM-E6-10M800-A-250.5no routeMass air flow (VG)—
W44OEM-E2-24M800-B-200.5no routeO2 right rear (OXR2)—
W45OEM-E4-8M800-B-210.5no routeO2 left rear (OXL2)—
W46OEM-E6-11M800-B-220.5no routeO2 right front (OXR1)—
W47OEM-E6-22M800-B-40.5no routeIntake air temperature (THA)—
W48OEM-E5-11M800-B-80.5no routeVehicle speed sensor (SP2-)—
W49OEM-E5-5M800-B-90.5no routeVehicle speed sensor (SP2+)—
W50OEM-E7-25M800-B-100.5no routeIgniter feedback (IGF)—
W51OEM-E4-2M800-B-110.5no routeStarter signal (STA)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit
connector3-1437290-7TESuperseal 1.0 26-way plug1.000ea
connector4-1437290-0TESuperseal 1.0 34-way plug, Key 11.000ea
terminal3-1447221-4TESuperseal 1.0 socket terminal, 20 AWG (0.5 sq mm)42.000ea

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (17)

SeverityCodeSubjectMessage
errorREQUIRED_UNMAPPEDOEM-E3-9Required OEM function "Ignition switch (IGSW)" (digital_in) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-E7-7Required OEM function "ETCS throttle motor - (M-)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-E7-8Required OEM function "ETCS throttle motor + (M+)" (hbridge_out) is not connected to the new ECU.
warnLOAD_UNKNOWNM800-A-31M800-A-31 "AUX5" drives OEM-E3-10 EFI main relay control (MREL) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-32M800-A-32 "AUX6" drives OEM-E3-4 Fuel pump relay (FPR) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-33M800-A-33 "AUX7" drives OEM-E4-13 A/C clutch relay (ACMG) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
infoNET_FAMILYOEM-E2-25 ↔ M800-A-34OEM-E2-25 "O2 heater right rear (HTR2)" [low_side_out] is wired to M800-A-34 "AUX8" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E2-26 ↔ M800-A-29OEM-E2-26 "O2 heater left rear (HTL2)" [low_side_out] is wired to M800-A-29 "INJ7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-E3-10 ↔ M800-A-31OEM-E3-10 "EFI main relay control (MREL)" [low_side_out] is wired to M800-A-31 "AUX5" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E3-4 ↔ M800-A-32OEM-E3-4 "Fuel pump relay (FPR)" [low_side_out] is wired to M800-A-32 "AUX6" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E4-13 ↔ M800-A-33OEM-E4-13 "A/C clutch relay (ACMG)" [low_side_out] is wired to M800-A-33 "AUX7" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E6-3 ↔ M800-A-30OEM-E6-3 "O2 heater right front (HTR)" [low_side_out] is wired to M800-A-30 "INJ8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-E7-17 ↔ M800-A-18OEM-E7-17 "VVT-i OCV - (OCV-)" [low_side_out] is wired to M800-A-18 "AUX1" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E7-18 ↔ M800-A-1OEM-E7-18 "VVT-i OCV + (OCV+)" [low_side_out] is wired to M800-A-1 "AUX2" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E7-19 ↔ M800-A-23OEM-E7-19 "ETCS throttle clutch - (CL-)" [low_side_out] is wired to M800-A-23 "AUX3" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-E7-20 ↔ M800-A-24OEM-E7-20 "ETCS throttle clutch + (CL+)" [low_side_out] is wired to M800-A-24 "AUX4" [switch_out]. Configure this output as low side.
infoUNMAPPEDOEM13 optional OEM pins are not mapped: OEM-E3-11 Serial diagnostic (SIL); OEM-E3-5 Fuel pump control (FC); OEM-E3-6 Check-engine lamp (W); OEM-E4-18 EVAP vapor pressure (PTNK); OEM-E4-5 Diagnostic/timing check (TC); OEM-E4-6 Stop light switch (STP); OEM-E5-12 Canister close valve (CCV); OEM-E6-12 O2 left front (OXL1); OEM-E6-4 O2 heater left front (HTL); OEM-E6-7 EVAP purge VSV (PRG); OEM-E7-27 Knock sensor 2 (KNK2); OEM-E7-28 Knock sensor 1 (KNK1); OEM-E7-5 ACIS intake VSV

Accepted (1)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-E3-1Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed.mapping-proposal

Notes

Fit check: unconfirmed. Confirm these before building: - Trigger pattern for Toyota 2JZ not found in the ECU's docs (No documented M800 OEM preset.) 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-E3 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 M800 has no dedicated key-on input - OEM-E7 7: ETCS throttle motor - (M-): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-E7 8: ETCS throttle motor + (M+): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand Not wired: - OEM-E3 1: Battery constant (BATT): MoTeC M800 has no battery-constant input; not needed - OEM-E7 28: Knock sensor 1 (KNK1): no free knock input on MoTeC M800 - OEM-E7 27: Knock sensor 2 (KNK2): no free knock input on MoTeC M800 - OEM-E6 4: O2 heater left front (HTL): no free heater_low_side/low_side/relay_control/ls_hs/injector on MoTeC M800 - OEM-E3 5: Fuel pump control (FC): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M800 - OEM-E3 6: Check-engine lamp (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M800 - OEM-E5 12: Canister close valve (CCV): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M800 - OEM-E6 7: EVAP purge VSV (PRG): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M800 - OEM-E7 5: ACIS intake VSV: no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M800 - OEM-E6 12: O2 left front (OXL1): no free o2_narrowband/analog_0_5 on MoTeC M800 - OEM-E4 18: EVAP vapor pressure (PTNK): no free analog_0_5 on MoTeC M800 - OEM-E4 5: Diagnostic/timing check (TC): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-E4 6: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-E3 11: Serial diagnostic (SIL): no free k_line on MoTeC M800

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docMoTeC M400/M600/M800/M880 Manual — Appendix L: Pin list by Functionhttps://starracecars.com/wp-content/uploads/resources/M400_M600_M800_M880_Manual_A5.pdfarchive2026-10-05b69bb8ffb674
4vendor_docMoTeC M800 OEM WRX56 Installationhttps://motec.com.auarchive2026-10-052ca4be92bb65
4service_manualToyota FSM RM779U (2001 Lexus IS300) — DIAGNOSTICS 'TERMINALS OF ECM' (DI-20/21)http://www.2jzgarage.com/wp-content/uploads/2013/04/2001_IS300_ECU_Pinouts.pdf———