Haltech E8 - Manual (Page 159)

Haltech E11/E8 Instruction Manual
Pattern 3 – All the large slot sizes are unique. A typical pattern is 4,8,12,16. This is commonly found on
SR20 motors.
Subaru Trigger
All factory injected 4 cylinder Subaru engines use a combined crank-angle/cam-angle trigger system. If a
Subaru trigger is being used, select the Trigger type as Subaru and connect the Cam angle sensor to the
Home Input and the Crank angle sensor to the Trigger Input. Both the Trigger and Home Input should be
set to Reluctor and the “Trigger angle” should be approximately 65
± 2° BTDC. The fields “Tooth Offset”
and “Number of Teeth” will not affect the operation of the ECU in a standard Subaru set-up.
If your Subaru engine is from an MY01 or later model WRX, then your trigger angle will be 68 ± 2° BTDC.
The fields “Tooth Offset” and “Number of Teeth” will not affect the operation of the ECU in a standard
Subaru set-up.
Motronic Trigger
The Bosch Motronic sensor system comprises a toothed wheel, generally 60 teeth, with 2 teeth missing
and a sensor that counts the passing teeth. The Ford system with 36 teeth and 1 tooth missing is
generally similar. The teeth provide the means for generating trigger signals and the missing teeth are
detected and provide a home reference. Most Motronic type sensors are Reluctor (magnetic) type sensors
that give out a signal that is similar to a sine wave. A Reluctor adaptor must condition this signal.
Please note that some Motronic sensors are of the Hall effect type that gives out a square wave signal
and there is therefore no necessity for signal conditioning. These sensors have to be configured differently
to so you will need to establish which type of Motronic sensor is on your engine.
If there are 2 wires per pickup, then this will almost certainly be a Reluctor type (isolated loop). If there are
3 wires it could be either a Reluctor type (signal, ground and shield grounded to sensor) or Hall effect type
in which case the Motronic trigger should be connected as a Hall effect type input. If in doubt as to the
type of sensor, check with the engine manufacturer. Also please note that if you elect to use an external
Reluctor adaptor rather than the internal Reluctor adaptor of the ECU the signal will already be
conditioned to square wave and the connection to the ECU should then be treated in the same manner as
a Hall effect sensor.
If the wires are reversed and the signal goes positive (+) first then the on-board reluctor adaptor will still
generate a pulse but it will not trigger the ECU correctly resulting in incorrect ignition timing. So please
make sure it is wired correctly.
Note that when using Motronic type sensors it is only necessary to use the Home channel (i.e. a separate
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Output Signal
Zero Volts
(Ground)
Zero Volts
(Ground )
Input Signal