Throttle Position Sensor
This engine uses a cable operated throttle body with a position sensor.
Manual versions use a 3-pin TPS
|Any Spare AVI|
Automatic versions use a TPS with dual 3-pin connectors. The upper connector has a simple full throttle switch and a closed throttle switch. The lower connector has the full range sensor.
|TPS Signal||Any Spare AVI|
Full Throttle Switch
Closed Throttle Switch
These engines do not come with a MAP sensor.
Use the internal MAP sensor that comes with your ECU. For higher boost levels an external MAP sensor should be used instead, connected to a spare AVI.
This engine uses a 2-pin BAC (Bypass Air Control) Valve which is duty controlled by the ECU via 1x output.
The larger solenoid is for idle control and is supplied a duty signal from the ECU. Nissan calls this the IACV-AAC (idle Air Control Valve - Auxiliary Air Control) solenoid.
The smaller solenoid is wired to the A/C Output and is simply switched on an off with the A/C clutch. It has a permanent ground and 12V+ is supplied from the A/C Relay to switch it on an off. Nissan calls this the IACV-FICD (Idle Air Control Valve - Fast Idle Control Device) and it is not wired to your Haltech ECU.
2-pin BAC Wiring
|1||Open Signal||Spare Output|
Wiring is not polarity sensitive
|1||Any Spare AVI*|
An AVI with a selectable Pullup should be used. If not and external 1k pullup to 5V should be connected.
Calibration: Use "Temperature - xxxxxxx.cal"
Created for Haltech ECUs using a 1k pullup to 5V
These engines do not come with an air temperature sensor. A sensor should be added to either the intake plenum or the intake pipe feeding the throttle body.
Nissan uses sensors that have ground connected to the body of the sensor. As such as signal ground wire should not be connected from the Haltech ECU.
To test the knock sensor polarity check for continuity between one of the pins and the metal body of the sensor. One of the pins will have ground, the other is the signal wire to the ECU.
Although most users of Haltech ECUs will be deleting the MAF, it is possible to use a MAF if you prefer.
|4||Signal 0-5V (AVI)|
This engines uses a single wire O2 sensor. It is not considered to be useful for tuning. It can be connected if no other sensor is present to AVI1 or AVI6.
Adding a Haltech Wideband Kit (highly recommended)
For correct operation a Haltech WB1 kit is highly recommended for this application.
Vehicle Speed Sensor
This engine uses a Reluctor Vehicle Speed sensor.
Reluctor Speed Sensor Wiring
|Signal +||Any Spare SPI|
|Signal -||Signal Ground|
Approximate Calibration Pulses Setting: xxxx pulses/km
The injector flow rate is measured with the injectors held wide open at 100% duty. Flow data is found in the base map provided with the ESP software for the adapter harness kit.
When an injector is commanded to open for a certain amount of time, the dead time is the amount of time the injector is not actually open during this period. It covers the time to energise the solenoid and begin to open and the time to close as well. There are also transient periods during which the injector is opening and closing where fuel flow is not at full capacity so this lost peak flow period is also taken into account. Dead time data is found in the base map provided with the ESP software for the adapter harness kit.
OEM ECU Information
The OEM ECU has the same connector and general appearance as the common Skyline RB25DET ECU.
Base maps have been created for use with the Haltech Elite Adapter Harnesses. Platinum Pro - Maps come with the ECU Manager Software.
Where applicable those maps are attached below.
To use these maps they should be IMPORTED into your ECU. Follow the IMPORTING A BASE MAP guide.