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Toyota Mark II JZX90 1992-96 (1JZ-GTE, non-VVT) → MaxxECU MaxxECU MINI REV10+ (auto)

Toyota Mark II JZX90 1992-96 (1JZ-GTE, non-VVT) — MaxxECU — MaxxECU MINI
⚠ 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 errors6: read the Findings page before cutting any wire
Size of the job37 wires · 8 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-C86-22SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-C86-23SP-14V-10.85☐☐☐☐☐☐☐
W3SP-14V-1MAXXECUMINI-C1-H40.85☐☐☐☐☐☐☐
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-1MAXXECUMINI-C1-G40.85☐☐☐☐☐☐☐
W9OEM-C84-11SP-0V-10.5☐☐☐☐☐☐☐
W10OEM-C84-17SP-0V-10.5☐☐☐☐☐☐☐
W11OEM-C84-22SP-0V-10.5☐☐☐☐☐☐☐
W12OEM-C84-6SP-0V-10.5☐☐☐☐☐☐☐
W13SP-0V-1MAXXECUMINI-C1-A20.5☐☐☐☐☐☐☐
W14SP-0V-1MAXXECUMINI-C1-B30.5☐☐☐☐☐☐☐
W15SP-0V-1MAXXECUMINI-C1-B40.5☐☐☐☐☐☐☐
W16SP-0V-1MAXXECUMINI-C1-D40.5☐☐☐☐☐☐☐
W17OEM-C84-1MAXXECUMINI-C1-E20.5☐☐☐☐☐☐☐
W18OEM-C84-5MAXXECUMINI-C1-A10.5☐☐☐☐☐☐☐
W19OEM-C88-24MAXXECUMINI-C1-F10.5☐☐☐☐☐☐☐
W20OEM-C88-16MAXXECUMINI-C1-F20.5☐☐☐☐☐☐☐
W21OEM-C88-15MAXXECUMINI-C1-F30.5☐☐☐☐☐☐☐
W22OEM-C88-26MAXXECUMINI-C1-F40.5☐☐☐☐☐☐☐
W23OEM-C88-10MAXXECUMINI-C1-G30.5☐☐☐☐☐☐☐
W24OEM-C88-9MAXXECUMINI-C1-H10.5☐☐☐☐☐☐☐
W25OEM-C88-8MAXXECUMINI-C1-H20.5☐☐☐☐☐☐☐
W26OEM-C84-8MAXXECUMINI-C1-C30.5☐☐☐☐☐☐☐
W27OEM-C84-7MAXXECUMINI-C1-D20.5☐☐☐☐☐☐☐
W28OEM-C84-20MAXXECUMINI-C1-C10.5☐☐☐☐☐☐☐
W29OEM-C85-2MAXXECUMINI-C1-G20.5☐☐☐☐☐☐☐
W30OEM-C86-5MAXXECUMINI-C1-G10.5☐☐☐☐☐☐☐
W31OEM-C88-3MAXXECUMINI-C1-E10.5☐☐☐☐☐☐☐
W32OEM-C88-11MAXXECUMINI-C1-D10.5☐☐☐☐☐☐☐
W33OEM-C88-23MAXXECUMINI-C1-H30.5☐☐☐☐☐☐☐
W34OEM-C84-12MAXXECUMINI-C1-C40.5☐☐☐☐☐☐☐
W35OEM-C84-14MAXXECUMINI-C1-C20.5☐☐☐☐☐☐☐
W36OEM-C86-12MAXXECUMINI-C1-B10.5☐☐☐☐☐☐☐
W37OEM-C84-4MAXXECUMINI-C1-B20.5☐☐☐☐☐☐☐

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
1MAXXECUMINI-C1-E2MAXXECUMINI-C1-A2open (OL)5 V sensor reference must not touch sensor ground
2MAXXECUMINI-C1-A2MAXXECUMINI-C1-H4open (OL)sensor ground must not touch +12 V supply
3MAXXECUMINI-C1-E2MAXXECUMINI-C1-H4open (OL)5 V sensor reference must not touch +12 V supply
4MAXXECUMINI-C1-G4MAXXECUMINI-C1-E2open (OL)power ground must not touch 5 V sensor reference
5MAXXECUMINI-C1-G4MAXXECUMINI-C1-H4open (OL)power ground must not touch +12 V supply

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

Revisions

RevLabelByDate
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Schematic

MAXXECUMINI-C1OEM-C84OEM-C85OEM-C86OEM-C88SP-0VSP-14VSP-GND

Connectors

MAXXECUMINI-C1

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
A1TRIGGER—W18—0.5OEM-C84-5———
A2TRIGGER GND—W13—0.5SP-0V-1———
B1DIN 1 (Hall only)—W36—0.5OEM-C86-12———
B2DIN 2 (Hall only)—W37—0.5OEM-C84-4———
B3SENSOR GND—W14—0.5SP-0V-1———
B4SENSOR GND—W15—0.5SP-0V-1———
C1CLT—W28—0.5OEM-C84-20———
C2IAT—W35—0.5OEM-C84-14———
C3AIN 3 (0-5V)—W26—0.5OEM-C84-8———
C4AIN 4 (0-5V)—W34—0.5OEM-C84-12———
D1GPO 8/TACHO—W32—0.5OEM-C88-11———
D2TPS—W27—0.5OEM-C84-7———
D3GND Shield————————
D4SENSOR GND—W16—0.5SP-0V-1———
E1GPO 3—W31—0.5OEM-C88-3———
E2+5V sensor supply—W17—0.5OEM-C84-1———
E3CAN L————————
E4CAN H————————
F1IGN 1—W19—0.5OEM-C88-24———
F2IGN 2—W20—0.5OEM-C88-16———
F3IGN 3—W21—0.5OEM-C88-15———
F4IGN 4—W22—0.5OEM-C88-26———
G1GPO 2—W30—0.5OEM-C86-5———
G2GPO 1—W29—0.5OEM-C85-2———
G3INJ 1—W23—0.5OEM-C88-10———
G4ENGINE GND—W8—0.85SP-GND-1———
H1INJ 2—W24—0.5OEM-C88-9———
H2INJ 3—W25—0.5OEM-C88-8———
H3INJ 4—W33—0.5OEM-C88-23———
H4+12V (ECU power supply)—W3—0.85SP-14V-1———

OEM-C84

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Sensor supply +5V (VCC)—W17—0.5MAXXECUMINI-C1-E2———
10Cam position 1 (G1)————————
11Cam 1 return (G1-)—W9—0.5SP-0V-1———
12TRAC throttle position (VTA2)—W34—0.5MAXXECUMINI-C1-C4———
13O2 sensor (OX1)————————
14Intake air temperature (THA)—W35—0.5MAXXECUMINI-C1-C2———
15OD direct-clutch speed sensor (NCO+)————————
16Cam position 2 (G2)————————
17Cam 2 return (G2-)—W10—0.5SP-0V-1———
20Coolant temperature (THW)—W28—0.5MAXXECUMINI-C1-C1———
22Sensor ground (E2)—W11—0.5SP-0V-1———
3OD direct-clutch speed sensor (NCO-)————————
4No.2 speed sensor (SP2-)—W37—0.5MAXXECUMINI-C1-B2———
5Crank position (NE)—W18—0.5MAXXECUMINI-C1-A1———
6Crank sensor return (NE-)—W12—0.5SP-0V-1———
7Throttle position (VTA1)—W27—0.5MAXXECUMINI-C1-D2———
8Manifold pressure (PIM)—W26—0.5MAXXECUMINI-C1-C3———
9No.2 speed sensor (SP2+)————————

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)—W29—0.5MAXXECUMINI-C1-G2———
3Check-engine lamp (W)————————
4Fuel pump control (FPC)————————
5Diagnostic test 1 (TE1)————————
6Timing retard (TR)————————
7Slave throttle position (VTO1)————————

OEM-C86

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Diagnostic test terminal (TT)————————
10A/T 2nd-gear indicator (2)————————
11Diagnostic test 2 (TE2)————————
12No.1 speed sensor (SP1)—W36—0.5MAXXECUMINI-C1-B1———
13Cat temperature sensor (CCO)————————
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)—W30—0.5MAXXECUMINI-C1-G1———
6A/T overdrive disable 2 (OD2)————————
7A/T overdrive disable 1 (OD1)————————
8Cat temp warning light (EGW)————————
9Ignition switch (IGSW)————————

OEM-C88

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Injector 1 (#10, cyl 1&4)—W23—0.5MAXXECUMINI-C1-G3———
11A/T shift solenoid 1 (S1)—W32—0.5MAXXECUMINI-C1-D1———
12Igniter feedback (IGF)————————
13Starter signal (STA)————————
14Neutral/park switch (NSW)————————
15Ignition 3 (IGT3)—W21—0.5MAXXECUMINI-C1-F3———
16Ignition 2 (IGT2)—W20—0.5MAXXECUMINI-C1-F2———
17A/T shift solenoid 2 (S2)————————
19Voltage feedback (VF)————————
20ISC stepper coil 4 (ISCV4)————————
21ISC stepper coil 3 (ISCV3)————————
22ISC stepper coil 2 (ISCV2)————————
23ISC stepper coil 1 (ISCV1)—W33—0.5MAXXECUMINI-C1-H3———
24Ignition 1 (IGT1)—W19—0.5MAXXECUMINI-C1-F1———
26Ignition 4 (IGT4)—W22—0.5MAXXECUMINI-C1-F4———
27A/T lock-up solenoid (S3)————————
28Power ground (E11)—W5—0.85SP-GND-1———
29Ignition 6 (IGT6)————————
3O2 heater (HT)—W31—0.5MAXXECUMINI-C1-E1———
30Ignition 5 (IGT5)————————
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)—W25—0.5MAXXECUMINI-C1-H2———
9Injector 2 (#20, cyl 3&5)—W24—0.5MAXXECUMINI-C1-H1———

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W9—0.5OEM-C84-11———
1——W10—0.5OEM-C84-17———
1——W11—0.5OEM-C84-22———
1——W12—0.5OEM-C84-6———
1——W13—0.5MAXXECUMINI-C1-A2———
1——W14—0.5MAXXECUMINI-C1-B3———
1——W15—0.5MAXXECUMINI-C1-B4———
1——W16—0.5MAXXECUMINI-C1-D4———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-C86-22———
1——W2—0.85OEM-C86-23———
1——W3—0.85MAXXECUMINI-C1-H4———

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—0.85MAXXECUMINI-C1-G4———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-C84-1Sensor supply +5V (VCC)vrefMAXXECUMINI-C1-E2+5V sensor supplyvrefsingle_source
OEM-C84-10Cam position 1 (G1)trigger_in———single_source
OEM-C84-11Cam 1 return (G1-)sensor_groundMAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4TRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GNDsensor_groundsingle_source
OEM-C84-12TRAC throttle position (VTA2)analog_inMAXXECUMINI-C1-C4AIN 4 (0-5V)analog_insingle_source
OEM-C84-13O2 sensor (OX1)lambda_nb_in———single_source
OEM-C84-14Intake air temperature (THA)temp_inMAXXECUMINI-C1-C2IATtemp_insingle_source
OEM-C84-15OD direct-clutch speed sensor (NCO+)digital_in———single_source
OEM-C84-16Cam position 2 (G2)trigger_in———single_source
OEM-C84-17Cam 2 return (G2-)sensor_groundMAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4TRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GNDsensor_groundsingle_source
OEM-C84-20Coolant temperature (THW)temp_inMAXXECUMINI-C1-C1CLTtemp_insingle_source
OEM-C84-22Sensor ground (E2)sensor_groundMAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4TRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GNDsensor_groundsingle_source
OEM-C84-3OD direct-clutch speed sensor (NCO-)digital_in———single_source
OEM-C84-4No.2 speed sensor (SP2-)digital_inMAXXECUMINI-C1-B2DIN 2 (Hall only)digital_insingle_source
OEM-C84-5Crank position (NE)trigger_inMAXXECUMINI-C1-A1TRIGGERtrigger_insingle_source
OEM-C84-6Crank sensor return (NE-)sensor_groundMAXXECUMINI-C1-A2 + MAXXECUMINI-C1-B3 + MAXXECUMINI-C1-B4 + MAXXECUMINI-C1-D4TRIGGER GND + SENSOR GND + SENSOR GND + SENSOR GNDsensor_groundsingle_source
OEM-C84-7Throttle position (VTA1)analog_inMAXXECUMINI-C1-D2TPSanalog_insingle_source
OEM-C84-8Manifold pressure (PIM)analog_inMAXXECUMINI-C1-C3AIN 3 (0-5V)analog_insingle_source
OEM-C84-9No.2 speed sensor (SP2+)digital_in———single_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)groundMAXXECUMINI-C1-G4ENGINE GNDgroundsingle_source
OEM-C85-2EFI main relay control (M-REL)low_side_outMAXXECUMINI-C1-G2GPO 1low_side_outsingle_source
OEM-C85-3Check-engine lamp (W)low_side_out———single_source
OEM-C85-4Fuel pump control (FPC)low_side_out———single_source
OEM-C85-5Diagnostic test 1 (TE1)digital_in———single_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_in———single_source
OEM-C86-11Diagnostic test 2 (TE2)digital_in———single_source
OEM-C86-12No.1 speed sensor (SP1)digital_inMAXXECUMINI-C1-B1DIN 1 (Hall only)digital_insingle_source
OEM-C86-13Cat temperature sensor (CCO)temp_in———single_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_inMAXXECUMINI-C1-H4+12V (ECU power supply)power_insingle_source
OEM-C86-23EFI main relay power (+B1)power_inMAXXECUMINI-C1-H4+12V (ECU power supply)power_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_outMAXXECUMINI-C1-G1GPO 2low_side_outsingle_source
OEM-C86-6A/T overdrive disable 2 (OD2)digital_in———single_source
OEM-C86-7A/T overdrive disable 1 (OD1)digital_in———single_source
OEM-C86-8Cat temp warning light (EGW)low_side_out———single_source
OEM-C86-9Ignition switch (IGSW)digital_in———single_source
OEM-C88-10Injector 1 (#10, cyl 1&4)injector_outMAXXECUMINI-C1-G3INJ 1injector_outsingle_source
OEM-C88-11A/T shift solenoid 1 (S1)low_side_outMAXXECUMINI-C1-D1GPO 8/TACHOlow_side_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_outMAXXECUMINI-C1-F3IGN 3ignition_outsingle_source
OEM-C88-16Ignition 2 (IGT2)ignition_outMAXXECUMINI-C1-F2IGN 2ignition_outsingle_source
OEM-C88-17A/T shift solenoid 2 (S2)low_side_out———single_source
OEM-C88-19Voltage feedback (VF)analog_out———single_source
OEM-C88-20ISC stepper coil 4 (ISCV4)low_side_out———single_source
OEM-C88-21ISC stepper coil 3 (ISCV3)low_side_out———single_source
OEM-C88-22ISC stepper coil 2 (ISCV2)low_side_out———single_source
OEM-C88-23ISC stepper coil 1 (ISCV1)low_side_outMAXXECUMINI-C1-H3INJ 4injector_outsingle_source
OEM-C88-24Ignition 1 (IGT1)ignition_outMAXXECUMINI-C1-F1IGN 1ignition_outsingle_source
OEM-C88-26Ignition 4 (IGT4)ignition_outMAXXECUMINI-C1-F4IGN 4ignition_outsingle_source
OEM-C88-27A/T lock-up solenoid (S3)low_side_out———single_source
OEM-C88-28Power ground (E11)groundMAXXECUMINI-C1-G4ENGINE GNDgroundsingle_source
OEM-C88-29Ignition 6 (IGT6)ignition_out———single_source
OEM-C88-3O2 heater (HT)low_side_outMAXXECUMINI-C1-E1GPO 3low_side_outsingle_source
OEM-C88-30Ignition 5 (IGT5)ignition_out———single_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)groundMAXXECUMINI-C1-G4ENGINE GNDgroundsingle_source
OEM-C88-34Power ground (E01)groundMAXXECUMINI-C1-G4ENGINE GNDgroundsingle_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_outMAXXECUMINI-C1-H2INJ 3injector_outsingle_source
OEM-C88-9Injector 2 (#20, cyl 3&5)injector_outMAXXECUMINI-C1-H1INJ 2injector_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-1MAXXECUMINI-C1-H40.85no route+12V (ECU power supply)—
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-1MAXXECUMINI-C1-G40.85no routeENGINE GND—
W9OEM-C84-11SP-0V-10.5no routeCam 1 return (G1-)—
W10OEM-C84-17SP-0V-10.5no routeCam 2 return (G2-)—
W11OEM-C84-22SP-0V-10.5no routeSensor ground (E2)—
W12OEM-C84-6SP-0V-10.5no routeCrank sensor return (NE-)—
W13SP-0V-1MAXXECUMINI-C1-A20.5no routeTRIGGER GND—
W14SP-0V-1MAXXECUMINI-C1-B30.5no routeSENSOR GND—
W15SP-0V-1MAXXECUMINI-C1-B40.5no routeSENSOR GND—
W16SP-0V-1MAXXECUMINI-C1-D40.5no routeSENSOR GND—
W17OEM-C84-1MAXXECUMINI-C1-E20.5no routeSensor supply +5V (VCC)—
W18OEM-C84-5MAXXECUMINI-C1-A10.5no routeCrank position (NE)—
W19OEM-C88-24MAXXECUMINI-C1-F10.5no routeIgnition 1 (IGT1)—
W20OEM-C88-16MAXXECUMINI-C1-F20.5no routeIgnition 2 (IGT2)—
W21OEM-C88-15MAXXECUMINI-C1-F30.5no routeIgnition 3 (IGT3)—
W22OEM-C88-26MAXXECUMINI-C1-F40.5no routeIgnition 4 (IGT4)—
W23OEM-C88-10MAXXECUMINI-C1-G30.5no routeInjector 1 (#10, cyl 1&4)—
W24OEM-C88-9MAXXECUMINI-C1-H10.5no routeInjector 2 (#20, cyl 3&5)—
W25OEM-C88-8MAXXECUMINI-C1-H20.5no routeInjector 3 (#30, cyl 2&6)—
W26OEM-C84-8MAXXECUMINI-C1-C30.5no routeManifold pressure (PIM)—
W27OEM-C84-7MAXXECUMINI-C1-D20.5no routeThrottle position (VTA1)—
W28OEM-C84-20MAXXECUMINI-C1-C10.5no routeCoolant temperature (THW)—
W29OEM-C85-2MAXXECUMINI-C1-G20.5no routeEFI main relay control (M-REL)—
W30OEM-C86-5MAXXECUMINI-C1-G10.5no routeA/C clutch relay (ACMG)—
W31OEM-C88-3MAXXECUMINI-C1-E10.5no routeO2 heater (HT)—
W32OEM-C88-11MAXXECUMINI-C1-D10.5no routeA/T shift solenoid 1 (S1)—
W33OEM-C88-23MAXXECUMINI-C1-H30.5no routeISC stepper coil 1 (ISCV1)—
W34OEM-C84-12MAXXECUMINI-C1-C40.5no routeTRAC throttle position (VTA2)—
W35OEM-C84-14MAXXECUMINI-C1-C20.5no routeIntake air temperature (THA)—
W36OEM-C86-12MAXXECUMINI-C1-B10.5no routeNo.1 speed sensor (SP1)—
W37OEM-C84-4MAXXECUMINI-C1-B20.5no routeNo.2 speed sensor (SP2-)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (11)

SeverityCodeSubjectMessage
errorINJECTOR_BALLASTMaxxECU MINIThe 1JZ-GTE injectors (1JZ-GTE fuel injector) are low-impedance, but MaxxECU MINI 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-C84-10Required OEM function "Cam position 1 (G1)" (trigger_in) is not connected to the new ECU.
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.
errorREQUIRED_UNMAPPEDOEM-C88-29Required OEM function "Ignition 6 (IGT6)" (ignition_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-C88-30Required OEM function "Ignition 5 (IGT5)" (ignition_out) is not connected to the new ECU.
warnLOAD_UNKNOWNMAXXECUMINI-C1-G1MAXXECUMINI-C1-G1 "GPO 2" drives OEM-C86-5 A/C clutch relay (ACMG) (load 0.2 A) but its current rating is unknown. Check the ECU manual.
warnLOAD_UNKNOWNMAXXECUMINI-C1-G2MAXXECUMINI-C1-G2 "GPO 1" drives OEM-C85-2 EFI main relay control (M-REL) (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.
infoNET_FAMILYOEM-C88-23 ↔ MAXXECUMINI-C1-H3OEM-C88-23 "ISC stepper coil 1 (ISCV1)" [low_side_out] is wired to MAXXECUMINI-C1-H3 "INJ 4" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency.
infoUNMAPPEDOEM42 optional OEM pins are not mapped: OEM-C84-13 O2 sensor (OX1); OEM-C84-15 OD direct-clutch speed sensor (NCO+); OEM-C84-3 OD direct-clutch speed sensor (NCO-); OEM-C84-9 No.2 speed sensor (SP2+); 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-C85-3 Check-engine lamp (W); OEM-C85-4 Fuel pump control (FPC); OEM-C85-5 Diagnostic test 1 (TE1); OEM-C85-6 Timing retard (TR); OEM-C85-7 Slave throttle position (VTO1); OEM-C86-1 Diagnostic test terminal (TT); OEM-C86-10 A/T 2nd-gear indicator (2); OEM-C86-11 Diagnostic test 2 (TE2); OEM-C86-13 Cat temperature sensor (CCO); 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-C86-7 A/T overdrive disable 1 (OD1); OEM-C86-8 Cat temp warning light (EGW); OEM-C88-12 Igniter feedback (IGF); OEM-C88-13 Starter signal (STA); OEM-C88-14 Neutral/park switch (NSW); OEM-C88-17 A/T shift solenoid 2 (S2); OEM-C88-19 Voltage feedback (VF); OEM-C88-20 ISC stepper coil 4 (ISCV4); OEM-C88-21 ISC stepper coil 3 (ISCV3); OEM-C88-22 ISC stepper coil 2 (ISCV2); OEM-C88-27 A/T lock-up solenoid (S3); 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 named 1JZ entry in the trigger list) - No knock input; the stock knock sensor would be unused - Only 4 ignition outputs for 6 cylinders: wasted spark (pair coils per firing order) - Only 4 injector outputs for 6 injectors: batch / semi-sequential injection 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 10: Cam position 1 (G1): no free cam_vr/cam_hall/frequency_in input on MaxxECU MaxxECU MINI - OEM-C84 16: Cam position 2 (G2): no free cam_vr/cam_hall/frequency_in input on MaxxECU MaxxECU MINI - OEM-C88 30: Ignition 5 (IGT5): no free ignition output on MaxxECU MaxxECU MINI - OEM-C88 29: Ignition 6 (IGT6): no free ignition output on MaxxECU MaxxECU MINI - 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); MaxxECU MaxxECU MINI has no dedicated key-on input Not wired: - OEM-C86 14: Battery constant (BATT): MaxxECU MaxxECU MINI has no battery-constant input; not needed - OEM-C88 5: Knock sensor 1 (KNK1, front): no free knock input on MaxxECU MaxxECU MINI - OEM-C88 4: Knock sensor 2 (KNK2, rear): no free knock input on MaxxECU MaxxECU MINI - OEM-C88 17: A/T shift solenoid 2 (S2): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-C88 22: ISC stepper coil 2 (ISCV2): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-C88 21: ISC stepper coil 3 (ISCV3): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-C88 20: ISC stepper coil 4 (ISCV4): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-C85 3: Check-engine lamp (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-C85 4: Fuel pump control (FPC): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-C86 8: Cat temp warning light (EGW): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-C88 27: A/T lock-up solenoid (S3): no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-C88 7: EVAP purge VSV: no free low_side/relay_control/heater_low_side/ls_hs/injector on MaxxECU MaxxECU MINI - OEM-C84 13: O2 sensor (OX1): no free o2_narrowband/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 13: Cat temperature sensor (CCO): no free thermistor/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C84 9: No.2 speed sensor (SP2+): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-C84 15: OD direct-clutch speed sensor (NCO+): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-C84 3: OD direct-clutch speed sensor (NCO-): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-C85 1: Slave engine speed (NEO): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-C85 10: Fuel pump diagnostic (DI): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-C88 12: Igniter feedback (IGF): no free frequency_in/switch_in on MaxxECU MaxxECU MINI - OEM-C85 5: Diagnostic test 1 (TE1): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 7: A/T overdrive disable 1 (OD1): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 10: A/T 2nd-gear indicator (2): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 11: Diagnostic test 2 (TE2): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 6: A/T overdrive disable 2 (OD2): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C85 14: ABS active (MT only): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C85 6: Timing retard (TR): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 1: Diagnostic test terminal (TT): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 17: A/T throttle position (L3): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 18: A/T throttle position (L2): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 19: A/T throttle position (L1): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 2: A/T low-gear indicator (L): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 20: A/C request (A/C): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 25: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 28: Electrical load sense (ELS): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C86 3: A/T power/normal mode (P): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C88 13: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C88 14: Neutral/park switch (NSW): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C88 31: TRAC throttle idle switch (IDL2): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C88 32: TPS idle switch (IDL1): no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU MINI - OEM-C85 11: Slave TRAC throttle position (VTO2): no free analog_out on MaxxECU MaxxECU MINI - OEM-C85 7: Slave throttle position (VTO1): no free analog_out on MaxxECU MaxxECU MINI - OEM-C88 19: Voltage feedback (VF): no free analog_out on MaxxECU MaxxECU MINI

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docMaxxECU GEN1 pinout (MINI / STREET / SPORT / V1 / RACE / PRO)http://www.maxxecu.com/webhelp/wirings-maxxecu_pinout.htmlarchive2026-10-052e37b6814690
2community_copywilbo666: 1JZ-GTE pinout (JZZ30 Soarer page, shared 1JZ-GTE engine/ECU)http://wilbo666.pbworks.com/w/page/47216384/1JZ-GTE%20JZZ30%20Soarer———