TB45 Engine

TB45 Engine

Information on the Nissan TB45 engine






Haltech ECU Options

Haltech has plug in ECU options for this model.






General Information

Cylinders
6
Displacement
4479 cc / 273.3 ci
Firing Order
1,5,3,6,2,4






Model Variants

There are a number of variants of the TB45 engine.

TB45S

Carburettor (no fuel injection)

TB45E

Fuel Injected model



Common Models

Found in the Nissan Patrol and Safari Y60 and Y61 models









Sensor Information



Distributor

A dual optical trigger is used inside the distributor.






Distributor Wiring
Pin
Description
Haltech Connection 
1
ECU Ignition SignalIgnition Output 1 (Yellow/Black)
2
Igniter Ground to Cyl Head
---
3
Ignition Coil 12V+---
4
Ignition Check---
5
Signal REF 120-deg
Trigger + (Yellow in Trigger 4-core)
6
Signal POS 1-deg
Home + (Yellow in Home 4-core)
7
12V+ Switched (Sensor Power)
12V+ (Red in Trigger 4-core)
8
Sensor Ground
Signal Ground (Blue in Trigger 4-core)

Trigger and Home Wiring Hack

A common hack to make wiring simpler is to do the following:

In the Grey shielded Trigger 4-core cable we have 12V+, Signal Ground, Trigger+, and Trigger-.   We need all of these wires except for Trigger-
In the Grey/Black shielded Home 4-core cable we only need the Home+
If we relocate the Green Trigger- wire so that instead of going to this ECU pin it instead goes to the Home+ ECU pin we now have all of the wires we require in a single 4-core cable.

For Elite 550 / 750 / 950
1. Remove the Yellow wire from ECU pin A32 and insulate it. It will not be used.
2. Remove the Green wire from ECU pin A33 and move it to A32.

For Elite 1000 / 1500 / 2000 / 2500
1. Remove the Yellow wire from ECU pin B2 and insulate it. It will not be used.
2. Remove the Green wire from ECU pin B5 and move it to B2.





Trigger Configuration










Ignition Coil and Igniter

The ignition coil is integrated into the distributor along with the igniter module.  Wiring information is part of the Distributor Wiring above.





Dwell Time









Throttle Position Sensor

This engine uses a cable operated throttle body with a position sensor.

Manual versions use a 3-pin TPS



Pin
Function
Haltech Wiring
 1
Ground
Signal Ground
2
Signal
Any Spare AVI
3
5V+
5V+




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.



Wiring
Pin
Function
Haltech Connection
1
Ground
Signal Ground
2
TPS SignalAny Spare AVI
3
5V+
5V+
4
Full Throttle Switch
---
5
5V+
---
6
Closed Throttle Switch
---










MAP Sensor

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.








Idle Valve

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
Pin
Function
Haltech Connection
1
Open Signal
Spare Output
2
Power
12V+ Switched







Coolant Temperature

Wiring is not polarity sensitive
Pin
Haltech Connection
1
Any Spare AVI*
2
Signal Ground
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







Air Temp

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.








Knock Sensor



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.

Pin
Haltech Connection
1
Knock Signal
2
Signal Ground







MAF Sensor

Although most users of Haltech ECUs will be deleting the MAF, it is possible to use a MAF if you prefer.

Pin
Description
1
No Connection
2
12V+ Switched
3
Sensor Ground
4
Signal 0-5V (AVI)







O2 Sensors

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.



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
OEM Wiring
Description
Signal +
Any Spare SPI
Signal -
Signal Ground

Approximate Calibration Pulses Setting: xxxx pulses/km





Injector Data


Flow

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.



Dead Time

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.




Location







ECU Pinout










Base Maps

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.







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