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Toyota Mark II JZX90 1992-96 (1JZ-GTE, non-VVT) → MoTeC M800 universal (auto)

Toyota Mark II JZX90 1992-96 (1JZ-GTE, non-VVT) — 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 job56 wires · 9 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-C86-22SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-C86-23SP-14V-10.85☐☐☐☐☐☐☐
W3SP-14V-1M800-A-260.85☐☐☐☐☐☐☐
W4OEM-C85-16SP-GND-10.85☐☐☐☐☐☐☐
W5OEM-C88-28SP-GND-10.85☐☐☐☐☐☐☐
W6OEM-C88-33SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-C88-34SP-GND-10.85☐☐☐☐☐☐☐
W8SP-GND-1M800-A-100.85☐☐☐☐☐☐☐
W9SP-GND-1M800-A-110.85☐☐☐☐☐☐☐
W10OEM-C84-11SP-0V-10.5☐☐☐☐☐☐☐
W11OEM-C84-17SP-0V-10.5☐☐☐☐☐☐☐
W12OEM-C84-22SP-0V-10.5☐☐☐☐☐☐☐
W13OEM-C84-6SP-0V-10.5☐☐☐☐☐☐☐
W14SP-0V-1M800-B-140.5☐☐☐☐☐☐☐
W15SP-0V-1M800-B-150.5☐☐☐☐☐☐☐
W16SP-0V-1M800-B-160.5☐☐☐☐☐☐☐
W17OEM-C84-1M800-A-20.5☐☐☐☐☐☐☐
W18OEM-C84-5M800-B-10.5☐☐☐☐☐☐☐
W19OEM-C84-10M800-B-20.5☐☐☐☐☐☐☐
W20OEM-C88-24M800-A-30.5☐☐☐☐☐☐☐
W21OEM-C88-16M800-A-40.5☐☐☐☐☐☐☐
W22OEM-C88-15M800-A-50.5☐☐☐☐☐☐☐
W23OEM-C88-26M800-A-60.5☐☐☐☐☐☐☐
W24OEM-C88-30M800-A-70.5☐☐☐☐☐☐☐
W25OEM-C88-29M800-A-80.5☐☐☐☐☐☐☐
W26OEM-C88-10M800-A-190.5☐☐☐☐☐☐☐
W27OEM-C88-9M800-A-200.5☐☐☐☐☐☐☐
W28OEM-C88-8M800-A-210.5☐☐☐☐☐☐☐
W29OEM-C84-8M800-A-140.5☐☐☐☐☐☐☐
W30OEM-C84-7M800-A-150.5☐☐☐☐☐☐☐
W31OEM-C84-20M800-B-30.5☐☐☐☐☐☐☐
W32OEM-C85-2M800-A-180.5☐☐☐☐☐☐☐
W33OEM-C86-5M800-A-10.5☐☐☐☐☐☐☐
W34OEM-C88-3M800-A-230.5☐☐☐☐☐☐☐
W35OEM-C88-11M800-A-240.5☐☐☐☐☐☐☐
W36OEM-C88-23M800-A-310.5☐☐☐☐☐☐☐
W37OEM-C88-17M800-A-320.5☐☐☐☐☐☐☐
W38OEM-C88-22M800-A-330.5☐☐☐☐☐☐☐
W39OEM-C88-21M800-A-340.5☐☐☐☐☐☐☐
W40OEM-C88-20M800-A-220.5☐☐☐☐☐☐☐
W41OEM-C85-3M800-A-270.5☐☐☐☐☐☐☐
W42OEM-C85-4M800-A-280.5☐☐☐☐☐☐☐
W43OEM-C86-8M800-A-290.5☐☐☐☐☐☐☐
W44OEM-C88-27M800-A-300.5☐☐☐☐☐☐☐
W45OEM-C84-12M800-A-160.5☐☐☐☐☐☐☐
W46OEM-C84-13M800-A-170.5☐☐☐☐☐☐☐
W47OEM-C84-14M800-B-40.5☐☐☐☐☐☐☐
W48OEM-C86-13M800-B-50.5☐☐☐☐☐☐☐
W49OEM-C86-12M800-B-80.5☐☐☐☐☐☐☐
W50OEM-C84-4M800-B-90.5☐☐☐☐☐☐☐
W51OEM-C84-9M800-B-100.5☐☐☐☐☐☐☐
W52OEM-C84-15M800-B-110.5☐☐☐☐☐☐☐
W53OEM-C85-5M800-A-250.5☐☐☐☐☐☐☐
W54OEM-C86-7M800-B-200.5☐☐☐☐☐☐☐
W55OEM-C86-10M800-B-210.5☐☐☐☐☐☐☐
W56OEM-C86-11M800-B-220.5☐☐☐☐☐☐☐

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

M800-AM800-BOEM-C84OEM-C85OEM-C86OEM-C88SP-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—W33—0.5OEM-C86-5———
25V Engine Sensor Supply—W17—0.5OEM-C84-1———
3IGN1—W20—0.5OEM-C88-24———
4IGN2—W21—0.5OEM-C88-16———
5IGN3—W22—0.5OEM-C88-15———
6IGN4—W23—0.5OEM-C88-26———
7IGN5—W24—0.5OEM-C88-30———
8IGN6—W25—0.5OEM-C88-29———
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—W29—0.5OEM-C84-8———
15Analog Voltage Input 2—W30—0.5OEM-C84-7———
16Analog Voltage Input 3—W45—0.5OEM-C84-12———
17Analog Voltage Input 4—W46—0.5OEM-C84-13———
18AUX1—W32—0.5OEM-C85-2———
19INJ1—W26—0.5OEM-C88-10———
20INJ2—W27—0.5OEM-C88-9———
21INJ3—W28—0.5OEM-C88-8———
22INJ4—W40—0.5OEM-C88-20———
23AUX3—W34—0.5OEM-C88-3———
24AUX4—W35—0.5OEM-C88-11———
25Analog Voltage Input 5—W53—0.5OEM-C85-5———
26VBAT Battery Positive—W3—0.85SP-14V-1———
27INJ5—W41—0.5OEM-C85-3———
28INJ6—W42—0.5OEM-C85-4———
29INJ7—W43—0.5OEM-C86-8———
30INJ8—W44—0.5OEM-C88-27———
31AUX5—W36—0.5OEM-C88-23———
32AUX6—W37—0.5OEM-C88-17———
33AUX7—W38—0.5OEM-C88-22———
34AUX8—W39—0.5OEM-C88-21———

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—W18—0.5OEM-C84-5———
2Cam Sync Timing Input—W19—0.5OEM-C84-10———
3Analog Temperature Input 1—W31—0.5OEM-C84-20———
4Analog Temperature Input 2—W47—0.5OEM-C84-14———
5Analog Temperature Input 3—W48—0.5OEM-C86-13———
6Analog Temperature Input 4————————
7Analog Temperature Input 5————————
8Digital Input 1—W49—0.5OEM-C86-12———
9Digital Input 2—W50—0.5OEM-C84-4———
10Digital Input 3—W51—0.5OEM-C84-9———
11Digital Input 4—W52—0.5OEM-C84-15———
12Lambda2 Sense Voltage————————
13Lambda2 Pump Current————————
140V Comms Reference—W14—0.5SP-0V-1———
150V Auxiliary Sensor Supply—W15—0.5SP-0V-1———
160V Engine Sensor Supply—W16—0.5SP-0V-1———
17RS232 Transmit Data————————
18RS232 Receive Data————————
19Analog Temperature Input 6————————
20Analog Voltage Input 6—W54—0.5OEM-C86-7———
21AV7—W55—0.5OEM-C86-10———
22AV8—W56—0.5OEM-C86-11———
23CAN Bus High————————
24CAN Bus Low————————
25Lambda1 Sense Voltage————————
26Lambda1 Pump Current————————

OEM-C84

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Sensor supply +5V (VCC)—W17—0.5M800-A-2———
10Cam position 1 (G1)—W19—0.5M800-B-2———
11Cam 1 return (G1-)—W10—0.5SP-0V-1———
12TRAC throttle position (VTA2)—W45—0.5M800-A-16———
13O2 sensor (OX1)—W46—0.5M800-A-17———
14Intake air temperature (THA)—W47—0.5M800-B-4———
15OD direct-clutch speed sensor (NCO+)—W52—0.5M800-B-11———
16Cam position 2 (G2)————————
17Cam 2 return (G2-)—W11—0.5SP-0V-1———
20Coolant temperature (THW)—W31—0.5M800-B-3———
22Sensor ground (E2)—W12—0.5SP-0V-1———
3OD direct-clutch speed sensor (NCO-)————————
4No.2 speed sensor (SP2-)—W50—0.5M800-B-9———
5Crank position (NE)—W18—0.5M800-B-1———
6Crank sensor return (NE-)—W13—0.5SP-0V-1———
7Throttle position (VTA1)—W30—0.5M800-A-15———
8Manifold pressure (PIM)—W29—0.5M800-A-14———
9No.2 speed sensor (SP2+)—W51—0.5M800-B-10———

OEM-C85

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Slave engine speed (NEO)————————
10Fuel pump diagnostic (DI)————————
11Slave TRAC throttle position (VTO2)————————
14ABS active (MT only)————————
16Power ground (E1)—W4—0.85SP-GND-1———
2EFI main relay control (M-REL)—W32—0.5M800-A-18———
3Check-engine lamp (W)—W41—0.5M800-A-27———
4Fuel pump control (FPC)—W42—0.5M800-A-28———
5Diagnostic test 1 (TE1)—W53—0.5M800-A-25———
6Timing retard (TR)————————
7Slave throttle position (VTO1)————————

OEM-C86

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Diagnostic test terminal (TT)————————
10A/T 2nd-gear indicator (2)—W55—0.5M800-B-21———
11Diagnostic test 2 (TE2)—W56—0.5M800-B-22———
12No.1 speed sensor (SP1)—W49—0.5M800-B-8———
13Cat temperature sensor (CCO)—W48—0.5M800-B-5———
14Battery constant (BATT)————————
17A/T throttle position (L3)————————
18A/T throttle position (L2)————————
19A/T throttle position (L1)————————
2A/T low-gear indicator (L)————————
20A/C request (A/C)————————
22EFI main relay power (+B)—W1—0.85SP-14V-1———
23EFI main relay power (+B1)—W2—0.85SP-14V-1———
25Stop light switch (STP)————————
28Electrical load sense (ELS)————————
3A/T power/normal mode (P)————————
5A/C clutch relay (ACMG)—W33—0.5M800-A-1———
6A/T overdrive disable 2 (OD2)————————
7A/T overdrive disable 1 (OD1)—W54—0.5M800-B-20———
8Cat temp warning light (EGW)—W43—0.5M800-A-29———
9Ignition switch (IGSW)————————

OEM-C88

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Injector 1 (#10, cyl 1&4)—W26—0.5M800-A-19———
11A/T shift solenoid 1 (S1)—W35—0.5M800-A-24———
12Igniter feedback (IGF)————————
13Starter signal (STA)————————
14Neutral/park switch (NSW)————————
15Ignition 3 (IGT3)—W22—0.5M800-A-5———
16Ignition 2 (IGT2)—W21—0.5M800-A-4———
17A/T shift solenoid 2 (S2)—W37—0.5M800-A-32———
19Voltage feedback (VF)————————
20ISC stepper coil 4 (ISCV4)—W40—0.5M800-A-22———
21ISC stepper coil 3 (ISCV3)—W39—0.5M800-A-34———
22ISC stepper coil 2 (ISCV2)—W38—0.5M800-A-33———
23ISC stepper coil 1 (ISCV1)—W36—0.5M800-A-31———
24Ignition 1 (IGT1)—W20—0.5M800-A-3———
26Ignition 4 (IGT4)—W23—0.5M800-A-6———
27A/T lock-up solenoid (S3)—W44—0.5M800-A-30———
28Power ground (E11)—W5—0.85SP-GND-1———
29Ignition 6 (IGT6)—W25—0.5M800-A-8———
3O2 heater (HT)—W34—0.5M800-A-23———
30Ignition 5 (IGT5)—W24—0.5M800-A-7———
31TRAC throttle idle switch (IDL2)————————
32TPS idle switch (IDL1)————————
33Power ground (E02)—W6—0.85SP-GND-1———
34Power ground (E01)—W7—0.85SP-GND-1———
4Knock sensor 2 (KNK2, rear)————————
5Knock sensor 1 (KNK1, front)————————
7EVAP purge VSV————————
8Injector 3 (#30, cyl 2&6)—W28—0.5M800-A-21———
9Injector 2 (#20, cyl 3&5)—W27—0.5M800-A-20———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W10—0.5OEM-C84-11———
1——W11—0.5OEM-C84-17———
1——W12—0.5OEM-C84-22———
1——W13—0.5OEM-C84-6———
1——W14—0.5M800-B-14———
1——W15—0.5M800-B-15———
1——W16—0.5M800-B-16———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-C86-22———
1——W2—0.85OEM-C86-23———
1——W3—0.85M800-A-26———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W4—0.85OEM-C85-16———
1——W5—0.85OEM-C88-28———
1——W6—0.85OEM-C88-33———
1——W7—0.85OEM-C88-34———
1——W8—0.85M800-A-10———
1——W9—0.85M800-A-11———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-C84-1Sensor supply +5V (VCC)vrefM800-A-25V Engine Sensor Supplyvrefsingle_source
OEM-C84-10Cam position 1 (G1)trigger_inM800-B-2Cam Sync Timing Inputtrigger_insingle_source
OEM-C84-11Cam 1 return (G1-)sensor_groundM800-B-14 + M800-B-15 + M800-B-160V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supplysensor_groundsingle_source
OEM-C84-12TRAC throttle position (VTA2)analog_inM800-A-16Analog Voltage Input 3analog_insingle_source
OEM-C84-13O2 sensor (OX1)lambda_nb_inM800-A-17Analog Voltage Input 4analog_insingle_source
OEM-C84-14Intake air temperature (THA)temp_inM800-B-4Analog Temperature Input 2temp_insingle_source
OEM-C84-15OD direct-clutch speed sensor (NCO+)digital_inM800-B-11Digital Input 4digital_insingle_source
OEM-C84-16Cam position 2 (G2)trigger_in———single_source
OEM-C84-17Cam 2 return (G2-)sensor_groundM800-B-14 + M800-B-15 + M800-B-160V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supplysensor_groundsingle_source
OEM-C84-20Coolant temperature (THW)temp_inM800-B-3Analog Temperature Input 1temp_insingle_source
OEM-C84-22Sensor 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-C84-3OD direct-clutch speed sensor (NCO-)digital_in———single_source
OEM-C84-4No.2 speed sensor (SP2-)digital_inM800-B-9Digital Input 2digital_insingle_source
OEM-C84-5Crank position (NE)trigger_inM800-B-1Crank Reference Timing Inputtrigger_insingle_source
OEM-C84-6Crank sensor 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-C84-7Throttle position (VTA1)analog_inM800-A-15Analog Voltage Input 2analog_insingle_source
OEM-C84-8Manifold pressure (PIM)analog_inM800-A-14AV1analog_insingle_source
OEM-C84-9No.2 speed sensor (SP2+)digital_inM800-B-10Digital Input 3digital_insingle_source
OEM-C85-1Slave engine speed (NEO)digital_in———single_source
OEM-C85-10Fuel pump diagnostic (DI)digital_in———single_source
OEM-C85-11Slave TRAC throttle position (VTO2)analog_out———single_source
OEM-C85-14ABS active (MT only)digital_in———single_source
OEM-C85-16Power ground (E1)groundM800-A-10 + M800-A-11GND Battery Negative + GND Battery Negativegroundsingle_source
OEM-C85-2EFI main relay control (M-REL)low_side_outM800-A-18AUX1switch_outsingle_source
OEM-C85-3Check-engine lamp (W)low_side_outM800-A-27INJ5injector_outsingle_source
OEM-C85-4Fuel pump control (FPC)low_side_outM800-A-28INJ6injector_outsingle_source
OEM-C85-5Diagnostic test 1 (TE1)digital_inM800-A-25Analog Voltage Input 5analog_insingle_source
OEM-C85-6Timing retard (TR)digital_in———single_source
OEM-C85-7Slave throttle position (VTO1)analog_out———single_source
OEM-C86-1Diagnostic test terminal (TT)digital_in———single_source
OEM-C86-10A/T 2nd-gear indicator (2)digital_inM800-B-21AV7analog_insingle_source
OEM-C86-11Diagnostic test 2 (TE2)digital_inM800-B-22AV8analog_insingle_source
OEM-C86-12No.1 speed sensor (SP1)digital_inM800-B-8Digital Input 1digital_insingle_source
OEM-C86-13Cat temperature sensor (CCO)temp_inM800-B-5Analog Temperature Input 3temp_insingle_source
OEM-C86-14Battery constant (BATT)power_in———single_source
OEM-C86-17A/T throttle position (L3)digital_in———single_source
OEM-C86-18A/T throttle position (L2)digital_in———single_source
OEM-C86-19A/T throttle position (L1)digital_in———single_source
OEM-C86-2A/T low-gear indicator (L)digital_in———single_source
OEM-C86-20A/C request (A/C)digital_in———single_source
OEM-C86-22EFI main relay power (+B)power_inM800-A-26VBAT Battery Positivepower_insingle_source
OEM-C86-23EFI main relay power (+B1)power_inM800-A-26VBAT Battery Positivepower_insingle_source
OEM-C86-25Stop light switch (STP)digital_in———single_source
OEM-C86-28Electrical load sense (ELS)digital_in———single_source
OEM-C86-3A/T power/normal mode (P)digital_in———single_source
OEM-C86-5A/C clutch relay (ACMG)low_side_outM800-A-1AUX2switch_outsingle_source
OEM-C86-6A/T overdrive disable 2 (OD2)digital_in———single_source
OEM-C86-7A/T overdrive disable 1 (OD1)digital_inM800-B-20Analog Voltage Input 6analog_insingle_source
OEM-C86-8Cat temp warning light (EGW)low_side_outM800-A-29INJ7injector_outsingle_source
OEM-C86-9Ignition switch (IGSW)digital_in———single_source
OEM-C88-10Injector 1 (#10, cyl 1&4)injector_outM800-A-19INJ1injector_outsingle_source
OEM-C88-11A/T shift solenoid 1 (S1)low_side_outM800-A-24AUX4switch_outsingle_source
OEM-C88-12Igniter feedback (IGF)digital_in———single_source
OEM-C88-13Starter signal (STA)digital_in———single_source
OEM-C88-14Neutral/park switch (NSW)digital_in———single_source
OEM-C88-15Ignition 3 (IGT3)ignition_outM800-A-5IGN3ignition_outsingle_source
OEM-C88-16Ignition 2 (IGT2)ignition_outM800-A-4IGN2ignition_outsingle_source
OEM-C88-17A/T shift solenoid 2 (S2)low_side_outM800-A-32AUX6switch_outsingle_source
OEM-C88-19Voltage feedback (VF)analog_out———single_source
OEM-C88-20ISC stepper coil 4 (ISCV4)low_side_outM800-A-22INJ4injector_outsingle_source
OEM-C88-21ISC stepper coil 3 (ISCV3)low_side_outM800-A-34AUX8switch_outsingle_source
OEM-C88-22ISC stepper coil 2 (ISCV2)low_side_outM800-A-33AUX7switch_outsingle_source
OEM-C88-23ISC stepper coil 1 (ISCV1)low_side_outM800-A-31AUX5switch_outsingle_source
OEM-C88-24Ignition 1 (IGT1)ignition_outM800-A-3IGN1ignition_outsingle_source
OEM-C88-26Ignition 4 (IGT4)ignition_outM800-A-6IGN4ignition_outsingle_source
OEM-C88-27A/T lock-up solenoid (S3)low_side_outM800-A-30INJ8injector_outsingle_source
OEM-C88-28Power ground (E11)groundM800-A-10 + M800-A-11GND Battery Negative + GND Battery Negativegroundsingle_source
OEM-C88-29Ignition 6 (IGT6)ignition_outM800-A-8IGN6ignition_outsingle_source
OEM-C88-3O2 heater (HT)low_side_outM800-A-23AUX3switch_outsingle_source
OEM-C88-30Ignition 5 (IGT5)ignition_outM800-A-7IGN5ignition_outsingle_source
OEM-C88-31TRAC throttle idle switch (IDL2)digital_in———single_source
OEM-C88-32TPS idle switch (IDL1)digital_in———single_source
OEM-C88-33Power ground (E02)groundM800-A-10 + M800-A-11GND Battery Negative + GND Battery Negativegroundsingle_source
OEM-C88-34Power ground (E01)groundM800-A-10 + M800-A-11GND Battery Negative + GND Battery Negativegroundsingle_source
OEM-C88-4Knock sensor 2 (KNK2, rear)knock_in———single_source
OEM-C88-5Knock sensor 1 (KNK1, front)knock_in———single_source
OEM-C88-7EVAP purge VSVlow_side_out———single_source
OEM-C88-8Injector 3 (#30, cyl 2&6)injector_outM800-A-21INJ3injector_outsingle_source
OEM-C88-9Injector 2 (#20, cyl 3&5)injector_outM800-A-20INJ2injector_outsingle_source

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-C86-22SP-14V-10.85no routeEFI main relay power (+B)—
W2OEM-C86-23SP-14V-10.85no routeEFI main relay power (+B1)—
W3SP-14V-1M800-A-260.85no routeVBAT Battery Positive—
W4OEM-C85-16SP-GND-10.85no routePower ground (E1)—
W5OEM-C88-28SP-GND-10.85no routePower ground (E11)—
W6OEM-C88-33SP-GND-10.85no routePower ground (E02)—
W7OEM-C88-34SP-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-C84-11SP-0V-10.5no routeCam 1 return (G1-)—
W11OEM-C84-17SP-0V-10.5no routeCam 2 return (G2-)—
W12OEM-C84-22SP-0V-10.5no routeSensor ground (E2)—
W13OEM-C84-6SP-0V-10.5no routeCrank sensor return (NE-)—
W14SP-0V-1M800-B-140.5no route0V Comms Reference—
W15SP-0V-1M800-B-150.5no route0V Auxiliary Sensor Supply—
W16SP-0V-1M800-B-160.5no route0V Engine Sensor Supply—
W17OEM-C84-1M800-A-20.5no routeSensor supply +5V (VCC)—
W18OEM-C84-5M800-B-10.5no routeCrank position (NE)—
W19OEM-C84-10M800-B-20.5no routeCam position 1 (G1)—
W20OEM-C88-24M800-A-30.5no routeIgnition 1 (IGT1)—
W21OEM-C88-16M800-A-40.5no routeIgnition 2 (IGT2)—
W22OEM-C88-15M800-A-50.5no routeIgnition 3 (IGT3)—
W23OEM-C88-26M800-A-60.5no routeIgnition 4 (IGT4)—
W24OEM-C88-30M800-A-70.5no routeIgnition 5 (IGT5)—
W25OEM-C88-29M800-A-80.5no routeIgnition 6 (IGT6)—
W26OEM-C88-10M800-A-190.5no routeInjector 1 (#10, cyl 1&4)—
W27OEM-C88-9M800-A-200.5no routeInjector 2 (#20, cyl 3&5)—
W28OEM-C88-8M800-A-210.5no routeInjector 3 (#30, cyl 2&6)—
W29OEM-C84-8M800-A-140.5no routeManifold pressure (PIM)—
W30OEM-C84-7M800-A-150.5no routeThrottle position (VTA1)—
W31OEM-C84-20M800-B-30.5no routeCoolant temperature (THW)—
W32OEM-C85-2M800-A-180.5no routeEFI main relay control (M-REL)—
W33OEM-C86-5M800-A-10.5no routeA/C clutch relay (ACMG)—
W34OEM-C88-3M800-A-230.5no routeO2 heater (HT)—
W35OEM-C88-11M800-A-240.5no routeA/T shift solenoid 1 (S1)—
W36OEM-C88-23M800-A-310.5no routeISC stepper coil 1 (ISCV1)—
W37OEM-C88-17M800-A-320.5no routeA/T shift solenoid 2 (S2)—
W38OEM-C88-22M800-A-330.5no routeISC stepper coil 2 (ISCV2)—
W39OEM-C88-21M800-A-340.5no routeISC stepper coil 3 (ISCV3)—
W40OEM-C88-20M800-A-220.5no routeISC stepper coil 4 (ISCV4)—
W41OEM-C85-3M800-A-270.5no routeCheck-engine lamp (W)—
W42OEM-C85-4M800-A-280.5no routeFuel pump control (FPC)—
W43OEM-C86-8M800-A-290.5no routeCat temp warning light (EGW)—
W44OEM-C88-27M800-A-300.5no routeA/T lock-up solenoid (S3)—
W45OEM-C84-12M800-A-160.5no routeTRAC throttle position (VTA2)—
W46OEM-C84-13M800-A-170.5no routeO2 sensor (OX1)—
W47OEM-C84-14M800-B-40.5no routeIntake air temperature (THA)—
W48OEM-C86-13M800-B-50.5no routeCat temperature sensor (CCO)—
W49OEM-C86-12M800-B-80.5no routeNo.1 speed sensor (SP1)—
W50OEM-C84-4M800-B-90.5no routeNo.2 speed sensor (SP2-)—
W51OEM-C84-9M800-B-100.5no routeNo.2 speed sensor (SP2+)—
W52OEM-C84-15M800-B-110.5no routeOD direct-clutch speed sensor (NCO+)—
W53OEM-C85-5M800-A-250.5no routeDiagnostic test 1 (TE1)—
W54OEM-C86-7M800-B-200.5no routeA/T overdrive disable 1 (OD1)—
W55OEM-C86-10M800-B-210.5no routeA/T 2nd-gear indicator (2)—
W56OEM-C86-11M800-B-220.5no routeDiagnostic test 2 (TE2)—

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)46.000ea

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (23)

SeverityCodeSubjectMessage
errorINJECTOR_BALLASTM800The 1JZ-GTE injectors (1JZ-GTE fuel injector) are low-impedance, but M800 drives saturated (high-Z) injectors only. Add a ballast resistor pack in series with each injector, or use an ECU with low-Z / peak-and-hold injector drivers.
errorREQUIRED_UNMAPPEDOEM-C84-16Required OEM function "Cam position 2 (G2)" (trigger_in) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-C86-9Required OEM function "Ignition switch (IGSW)" (digital_in) is not connected to the new ECU.
warnLOAD_UNKNOWNM800-A-1M800-A-1 "AUX2" drives OEM-C86-5 A/C clutch relay (ACMG) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNM800-A-18M800-A-18 "AUX1" drives OEM-C85-2 EFI main relay control (M-REL) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnNET_FAMILYOEM-C85-5 ↔ M800-A-25OEM-C85-5 "Diagnostic test 1 (TE1)" [digital_in] is wired to M800-A-25 "Analog Voltage Input 5" [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.
warnNET_FAMILYOEM-C86-10 ↔ M800-B-21OEM-C86-10 "A/T 2nd-gear indicator (2)" [digital_in] is wired to M800-B-21 "AV7" [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.
warnNET_FAMILYOEM-C86-11 ↔ M800-B-22OEM-C86-11 "Diagnostic test 2 (TE2)" [digital_in] is wired to M800-B-22 "AV8" [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.
warnNET_FAMILYOEM-C86-7 ↔ M800-B-20OEM-C86-7 "A/T overdrive disable 1 (OD1)" [digital_in] is wired to M800-B-20 "Analog Voltage Input 6" [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.
infoNET_FAMILYOEM-C85-2 ↔ M800-A-18OEM-C85-2 "EFI main relay control (M-REL)" [low_side_out] is wired to M800-A-18 "AUX1" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-C85-3 ↔ M800-A-27OEM-C85-3 "Check-engine lamp (W)" [low_side_out] is wired to M800-A-27 "INJ5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-C85-4 ↔ M800-A-28OEM-C85-4 "Fuel pump control (FPC)" [low_side_out] is wired to M800-A-28 "INJ6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-C86-5 ↔ M800-A-1OEM-C86-5 "A/C clutch relay (ACMG)" [low_side_out] is wired to M800-A-1 "AUX2" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-C86-8 ↔ M800-A-29OEM-C86-8 "Cat temp warning light (EGW)" [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-C88-11 ↔ M800-A-24OEM-C88-11 "A/T shift solenoid 1 (S1)" [low_side_out] is wired to M800-A-24 "AUX4" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-C88-17 ↔ M800-A-32OEM-C88-17 "A/T shift solenoid 2 (S2)" [low_side_out] is wired to M800-A-32 "AUX6" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-C88-20 ↔ M800-A-22OEM-C88-20 "ISC stepper coil 4 (ISCV4)" [low_side_out] is wired to M800-A-22 "INJ4" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoNET_FAMILYOEM-C88-21 ↔ M800-A-34OEM-C88-21 "ISC stepper coil 3 (ISCV3)" [low_side_out] is wired to M800-A-34 "AUX8" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-C88-22 ↔ M800-A-33OEM-C88-22 "ISC stepper coil 2 (ISCV2)" [low_side_out] is wired to M800-A-33 "AUX7" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-C88-23 ↔ M800-A-31OEM-C88-23 "ISC stepper coil 1 (ISCV1)" [low_side_out] is wired to M800-A-31 "AUX5" [switch_out]. Configure this output as low side.
infoNET_FAMILYOEM-C88-27 ↔ M800-A-30OEM-C88-27 "A/T lock-up solenoid (S3)" [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-C88-3 ↔ M800-A-23OEM-C88-3 "O2 heater (HT)" [low_side_out] is wired to M800-A-23 "AUX3" [switch_out]. Configure this output as low side.
infoUNMAPPEDOEM26 optional OEM pins are not mapped: OEM-C84-3 OD direct-clutch speed sensor (NCO-); OEM-C85-1 Slave engine speed (NEO); OEM-C85-10 Fuel pump diagnostic (DI); OEM-C85-11 Slave TRAC throttle position (VTO2); OEM-C85-14 ABS active (MT only); OEM-C85-6 Timing retard (TR); OEM-C85-7 Slave throttle position (VTO1); OEM-C86-1 Diagnostic test terminal (TT); OEM-C86-17 A/T throttle position (L3); OEM-C86-18 A/T throttle position (L2); OEM-C86-19 A/T throttle position (L1); OEM-C86-2 A/T low-gear indicator (L); OEM-C86-20 A/C request (A/C); OEM-C86-25 Stop light switch (STP); OEM-C86-28 Electrical load sense (ELS); OEM-C86-3 A/T power/normal mode (P); OEM-C86-6 A/T overdrive disable 2 (OD2); OEM-C88-12 Igniter feedback (IGF); OEM-C88-13 Starter signal (STA); OEM-C88-14 Neutral/park switch (NSW); OEM-C88-19 Voltage feedback (VF); OEM-C88-31 TRAC throttle idle switch (IDL2); OEM-C88-32 TPS idle switch (IDL1); OEM-C88-4 Knock sensor 2 (KNK2, rear); OEM-C88-5 Knock sensor 1 (KNK1, front); OEM-C88-7 EVAP purge VSV

Accepted (1)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-C86-14Battery-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 1JZ-GTE 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-C84 16: Cam position 2 (G2): no free cam_vr/cam_hall/frequency_in input on MoTeC M800 - OEM-C86 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 Not wired: - OEM-C86 14: Battery constant (BATT): MoTeC M800 has no battery-constant input; not needed - OEM-C88 5: Knock sensor 1 (KNK1, front): no free knock input on MoTeC M800 - OEM-C88 4: Knock sensor 2 (KNK2, rear): no free knock input on MoTeC M800 - OEM-C88 7: EVAP purge VSV: no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M800 - OEM-C84 3: OD direct-clutch speed sensor (NCO-): no free frequency_in/switch_in on MoTeC M800 - OEM-C85 1: Slave engine speed (NEO): no free frequency_in/switch_in on MoTeC M800 - OEM-C85 10: Fuel pump diagnostic (DI): no free frequency_in/switch_in on MoTeC M800 - OEM-C88 12: Igniter feedback (IGF): no free frequency_in/switch_in on MoTeC M800 - OEM-C86 6: A/T overdrive disable 2 (OD2): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C85 14: ABS active (MT only): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C85 6: Timing retard (TR): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C86 1: Diagnostic test terminal (TT): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C86 17: A/T throttle position (L3): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C86 18: A/T throttle position (L2): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C86 19: A/T throttle position (L1): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C86 2: A/T low-gear indicator (L): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C86 20: A/C request (A/C): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C86 25: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C86 28: Electrical load sense (ELS): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C86 3: A/T power/normal mode (P): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C88 13: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C88 14: Neutral/park switch (NSW): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C88 31: TRAC throttle idle switch (IDL2): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C88 32: TPS idle switch (IDL1): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C85 11: Slave TRAC throttle position (VTO2): no free analog_out on MoTeC M800 - OEM-C85 7: Slave throttle position (VTO1): no free analog_out on MoTeC M800 - OEM-C88 19: Voltage feedback (VF): no free analog_out 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
2community_copywilbo666: 1JZ-GTE pinout (JZZ30 Soarer page, shared 1JZ-GTE engine/ECU)http://wilbo666.pbworks.com/w/page/47216384/1JZ-GTE%20JZZ30%20Soarer———