Please enable JavaScript to view this site.

MaxxECU online help

Navigation: Wiring information > Plugin ECU solutions

Nissan S14A/S15 SR20 (64-pin)

Scroll Prev Top Next More

Note: This is the updated plugin adapter to fit MaxxECU STREET, RACE and PRO.

For information on the first generation MaxxECU V1 adapters, downloaded here.

 

 

Vehicle cover list

Vehicle

Engine code

Year

LSU sensor

Note

Nissan Silvia S14A

SR20DET

1993 - 1999

External sensor needed

Make sure of the correct engine code since this model might use different engines

Nissan Silvia S15

SR20DET

1992 - 2002

External sensor needed

Make sure of the correct engine code since this model might use different engines

Note: Manual transmission only!

 

Control options

The MaxxECU adapter for Nissan S14A/S15 with SR20 can be used with all our ECUs

 

OEM options

MaxxECU IO

STREET

V1/RACE/PRO

Fuel pump

INJ 5

Yes

Yes

Tachometer

GPO 8

Yes

Yes

Boost solenoid

GPO 1

Yes

Yes

VCT solenoid

GPO 3

Yes

Yes

Engine fan

INJ 6

Yes

Yes

Vehicle speed

DIN 1

Yes

Yes

AC request

DIN 2

Yes

Yes

AC fan

INJ 7

No

Yes

Error light

GPO 5

No

Yes

Idle solenoid

GPO 6

No

Yes

AC

GPO 4

No

Yes

Bluetooth (MDash)

-

No

Yes

Knock sensor(s)

-

No

No

EGT option

-

Yes, external

Yes, direct

 

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.

 

 

Plugin adapter description

clip0221

 

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 Nissan SR20 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

INJ 8

Output

Not available on MaxxECU STREET

6

-

 

 

7

-

 

 

8

GPO 7/DIN 3

Output or digital input

Not available on MaxxECU STREET

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


 

 

 

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

 

 

Last updated: 2017-03-15 by Natanael Ceder