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MaxxECU online help

Vehicle cover list

Vehicle

Engine code

Year

LSU sensor

Note

Toyota Supra MKIV

2JZ

1993 - 1997

External sensor needed

 

Note: Manual transmission only!

 

 

Control options

The MaxxECU adapter for Toyota Supra MKIV can be used with V1/RACE or PRO ECUs.

Note: Only for single turbo conversion and manual gearbox. Non VVTI engines (not the same ECU connector).

 

OEM options

MaxxECU IO

V1

RACE

Fuel pump (stock)

IGN 7

Yes

Yes

Tachometer

GPO 8

Yes

Yes

Vehicle speed

DIN 2

Yes

Yes

AC request

DIN 1

Yes

Yes

Error light

GPO 5

Yes

Yes

Idle stepper

GPO 1,2,3,4

Yes

Yes

AC clutch

INJ 8

Yes

Yes

Stock boost solenoids

-

No

No

VVTi

-

No

No

Engine fan

-

-

-

Bluetooth (MDash)

 

Yes

Yes

OEM Knock sensor(s)

 

No

No

EGT option

 

Yes, direct

Yes, direct

Wide band lambda


Yes, External

Yes, External

 

Note: This plugin adapter uses only connector 1 on MaxxECU RACE/PRO units, for extra functionality, the second harness can be added to the RACE ECU.

The PRO ECU have in total of four ECU connectors which could be added for extra functionality: second harness, third harness and/or harness 4.

 

 

Using 2JZ Plugin adapter with MaxxECU STREET

Note: The MaxxECU 2JZ plugin can be used in combination with MaxxECU STREET ECU, but it requires some rewiring depending on your setup:

 

Stock fuel pump controller can't be used (IGN 7 does not exist on STREET).

Error light wont work (GPO 5 does not exist on STREET).

Idle stepper control wont work (GPO 4) does not exist.

Disconnect GPO 1 (pin 35 in harness adapter) and route to ex new fuel pump relay.

Disconnect GPO 2 (pin 33 in harness adapter) and route to ex external boost solenoid.

Disconnect GPO 3 (pin 34 in harness adapter) and route to ex engine fan relay / error light.

 

clip0248

2ZJ ECU pinout.

 

 

 

Plugin adapter description

clip0247

1

MaxxECU CMC connector

2

Vehicle harness adapter

3

16-pin extra connector

4

3-pin extra connector for ex. pressure sensor, analog input 4(AIN 4)

5

2-pin extra connector for external intake temperature sensor (IAT). Not included

 

 

ECU location and installation

Stock ECU is located behind plastic guard on passenger side floor.

 

1.Remove the plastic guard where the ECU is located.

2.Disconnect battery from vehicle.

3.Remove and disconnect stock ECU from vehicle harness.

4.Install MaxxECU adapter harness.

5.Route the included MaxxECU MAP-sensor hose to the intake manifold and connect into the MaxxECU.

6.Route wide band lambda cables to exhaust system, install lambda sensor in exhaust and wire the lambda sensor as instructed below.

7.Some models of the Supra is not equipped with a intake air temperature sensor (IAT) which is recommended to install and connect to the MaxxECU.

 

 

16-pin extra connector

16-pin_connector

Note: Pinout is from the wire side of the pre-wired cable harness.

 

Pin

Description

Usage

Note

1

Wide band (VREF)

 


2

Wide band (VS)

 


3

Wide band (shield)

 


4

Wide band (H-)

 

 

5

GPO 6

Output


6

GPO 7 / DIN 3

Output or digital input

 

7

-

 

 

8

INJ 7

Output

 

9

Wide band (IP)

 


10

Wide band (RCAL)

 


11

+12V

Output


12

+12V

Output


13

Engine GND

 


14

AIN 1

temperature input


15

AIN 2

temperature input


16

AIN 3

0-5V analog input


 

 

3-pin extra connector (0-5V analog input 4)

1

Sensor GND

2

Analog input 4 (0-5v)

3

+5V sensor supply

see also, analog input.

 

 

 

Internal wide band lambda (Bosch LSU 4.2) connection

clip0197

LSU 4.2 wiring with MaxxECU Plugin solutions.

Note: Seen from the wire side of the pre-wired connector.

 

PIN

Function (LSU 4.2)

1

VS

2

RCAL

3

+12V

4

H-

5

VREF

6

IP

 

See also external wide band lambda wiring.

 

 

Optional: Install external intake air temperature (IAT) sensor

Some vehicles are not equipped with an intake air temperature (IAT) sensor and MaxxECU plugin solutions do have the

option to add a sensor.

 

 

clip0218

The intake air temperature (IAT) sensor should be mounted to sense fresh air flow going into the engine.

Depending on the intake manifold construction, the position of the temperature sensor is not given, but preferably mount

the sensor in the intake, or in the pipe before/after the throttle.

 

 

IAT wiring

clip0219

MaxxECU plugin solution are equipped with an optional 2-pin connector for optional IAT wiring.

 

 

clip0220

Mating connector and wires for external IAT sensor.

 

 

See also

Product page

Download base maps

Example wirings of extra input and output

Nissan CAS trigger system

Trigger problems

Engine start