Toyota 1FZ-FE Engine
Information on the Toyota 1FZ-FE engine. The 1FZ-F is a carburettor version and is not covered in this guide.
80-Series 1FZ-FE with Distributor ignition
100-series 1FZ-FE with Waste Spark ignition and crank/cam sensors
Haltech ECU Options
Engine is supported by the Elite 750. No idle control.
Full Support with the Elite 2000 and 2500
General Information
| Cylinders | 6 |
| Displacement | 4477 cc |
| Firing Order | 1,5,3,6,2,4 |
Model Variants
There are a number of variants of the Toyota 1FZ engine.
1FZ-F
9.0:1 comp, carburettor, not supported in this guide
1FZ-E
Low output LPG version for Forklifts.
1FZ-FE 80-series
Fuel Injection added, distributor ignition, stepper motor idle control with manual cable overide.
MY95-on had the option of dual fuel tanks for extended range with ECU Control. This is supported by the Elite ECU.
1FZ-FE 100-series (MY98-on)
Crank and cam sensors, Waste Spark ignition, new intake with longer runners, new injectors, redesigned head, new pistons
Common Models
Found in the Toyota Land Cruiser MY92-07 and Lexus LX450 MY95-97
Sensor Information
Distributor
Distributor models have 3x Reluctor sensors inside the distributor. There is a 24x tooth wheel with a single sensor (NE), and a 1x tooth wheel with 2x sensors (G1 and G2). All sensors link their negative side together to a common signal ground. Some distributor models are reported to have also a crank angle sensor (NE2) with a 36-2 tooth pattern. If the engine has this crank sensor it can be used for the Trigger and the Haltech Trigger+ connected to it instead of the Distributor NE signal.
Pin
Description
Haltech Connection
1
NE (24x)
Trigger+ (Yellow in Trigger 4-core)
2
G1 (1x)
Home+ (Yellow in Home 4-core)
3
G2 (1x)
---
4
G-
Ground (Blue in Trigger 4-core)
| Pin | Description | Haltech Connection |
| 1 | NE (24x) | Trigger+ (Yellow in Trigger 4-core) |
| 2 | G1 (1x) | Home+ (Yellow in Home 4-core) |
| 3 | G2 (1x) | --- |
| 4 | G- | Ground (Blue in Trigger 4-core) |
Crank/Cam Sensor
Waste Spark models have a crank sensor and a cam sensor. The crank trigger uses a 36x tooth wheel with 2x missing teeth (36-2) mounted on the crankshaft timing belt gear. The cam trigger has 2x teeth 90-deg apart on the intake cam. Reluctor sensors are used.
Crank Sensor
A Reluctor crank position sensor is used.
Reluctor Wiring
| Pin | Description | Haltech Connection (Trigger 4-core) |
| 1 (Red) | Reluctor + | Yellow |
| 2 (Green or White) | Reluctor - | Green |
3 (White/Black) | Shield | --- |
Cam Sensor
A Reluctor cam sensor is used.
Reluctor Wiring
| Pin | Description | Haltech Connection (Home 4-core) |
| 1 (Red) | Reluctor + | Yellow |
| 2 (Green or White) | Reluctor - | Green |
Ignition Coils and Igniter
Distributor Model
The distributor model has a single ignition coil and features an external igniter.
| Pin | Description | Haltech Connection |
| 1 (Black/Yellow) | IGF (Ignition Fail) | --- |
| 2 (Black/Green) | IGT (Ignition Timed) | Ignition Output 1 (Yellow/Black) |
| 3 (Black/Red) | 12V+ Switched | --- |
4 (Black) | Tacho | |
5 (Black/White) | Coil -ve Signal | --- |
Waste Spark Model
The Waste Spark models have 3x dual post coils with each having an internal igniter.
Pin | Description | Haltech Connection |
1 (White/Black) | Ground to Cylinder Head | --- |
2 (Black/White ) | IGF (Ignition Fail) | --- |
3 (Black 1+6, Red 2+5, Blue 3+4) | ECU Signal | Ignition Output 1,2,3 |
4 (Black/Red) | 12V+ Swtiched | --- |
Dwell Time
Distributor Model
Throttle Position Sensor
This engine uses a cable operated throttle body with a position sensor.
4-pin older models
| Pin | Description | Haltech Wiring |
| 1 - (Brown/Black) | Signal Ground | Signal Ground (Black/White) |
| 2 - (Green/White) | Idle Closed Throttle Switch | --- |
| 3 - (Green/Black) | Signal | Spare AVI (AVI-10 White) |
| 4 - (Red/Green) | 5V+ | 5V+ Orange |
3-pin newer models
Pin | Description | Haltech Connection |
1 (Light Blue/Red) | 5V+ | 5V+ (Orange) |
2 (Red/Yellow) | Signal Ground | Signal Ground (Black/White) |
3 (Brown/White) | Signal | Spare AVI (AVI-10 White) |
MAP Sensor
Older models do not come withe 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.
Some newer models have a MAP sensor
Pin | Description | Haltech Connection |
1 (Brown/White) | Signal Ground | Signal Ground (Black/White) |
2 (Purple/Blue) | MAP Signal | Spare AVI (AVI-9 Yellow) |
3 (Blue/Red) | 5V+ | 5V+ (Orange) |
Idle Valve
This engine uses a Stepper Motor idle valve controlled via the Stepper Outputs. It will not work on Elite 550/750/950 ECU models.
There is also a manual throttle stop overide operated via cable in the same way as a carburettor choke. Using this can be a workaround for those wanting to use an Eltie 750.
6-pin Stepper Motor
| Pin | Description | Haltech Connection |
| 1 (Red/Black) | Idle 2 | Stepper 3 (Green/Brown) |
| 2 (Yellow/Red) | 12V+ | --- |
| 3 | Idle 4 | Stepper 4 (Green/Red) |
| 4 | Idle 1 | Stepper 1 (Green) |
| 5 (Yellow/Red) | 12V+ | --- |
| 6 | Idle 3 | Stepper 2 (Green/Black) |
Drive Type: Low Side if 12V+ is connected. Both if 12V+ is not connected (recommended)
Steps:240 Speed:75
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.
Air Temperature
An air temperature sensor is incorporated in the MAF Sensor unit. If this has been deleted a new Air Temperature Sensor should be added to the intake as close to the MAP sensor vacuum source as possible.
Knock Sensors
The 1FZ-FE engine has 2x knock sensors. These are of an older resonant style with a single wire. It is possible to use them however they are prone to failure and also can give erratic readings with modified engines. It is recommended to replace the sensors with donut style non-resonant sensors.
| 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. Two different MAF sensors were used.
MY92-94
MY95-on
| Pin | Description | Haltech Connection |
| 1 | 12V+ Switched | --- |
| 2 | VG MAF Signal | Spare AVI |
| 3 | THA Air Temperature Signal | Spare AVI* |
| 4 | E2 MAF Signal Ground | Signal Ground (Black/White) |
5 | E21 Air Temp Signal Ground | Signal Ground (Black/White) |
O2 Sensors
Not all models have an O2 sensor. Those that do have a 4-wire heated Narrow Band Sensor. This is not suitable for engine tuning.
| Pin | Description | Haltech Connection |
| 1 | Heater Control | Spare Output or Chassis Ground |
| 2 (Yellow/Red) | 12V+ Switched | --- |
| 3 (Light Blue/White) | O2 Signal | AVI-1 or AVI-6 |
| 4 (Brown/Black) | Signal Ground | Signal Ground (Black/White) |
It is possible for the ECU to supply a duty signal to the Heater Ground, with many OEM ECUs doing this. Haltech ECUs can also perform this task and a spare Injector or Stepper Output should be used.
O2 Sensors can use various wattage heater elements, with 12W and 18W being common. For 18W units it is advised to not supply more than ~50% duty to prevent excessive current being applied to the ECU output. If Heater Control is not necessary this can be simply connected to Chassis Ground.
Adding a Haltech Single-Channel Wideband WB1 Kit (highly recommended)
For correct operation a Haltech WB1 kit is highly recommended for this application, with the provided 4.9 sensors replacing the pre-cat sensors. Sensors use a 22mm socket or spanner to remove and replace.
Vehicle Speed Sensor
This engine receives a speed signal from the speedometer.
Injector Data
Flow
The injector flow rate is measured with the injectors held wide open at 100% duty. For fuel systems with a fixed regulator pressure (often returnless systems) that is not referenced to manifold pressure the flow needs to be mapped over Manifold Pressure for accurate tuning.
Injector Flow : 280 cc/min
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.
OEM ECU Information
Location
ECU is located in the lower section of the dash behind the passenger speaker.
ECU Pinout
Base Maps
Base maps have been created for use with the Haltech Elite Adapter Harnesses.
To use these maps they should be IMPORTED into your ECU. Follow the IMPORTING A BASE MAP guide.
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