Haltech E6K - Manual (Page 139)

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Please note that if you wish to use sequential type fuel injection a separate “Home” input
is required when using the Motronic type triggers. As the home signal will not be a
Motronic type signal no in-line resistance will be required. If the sensor delivering the home
signal is of the reluctor type it is not necessary to reverse the polarities ie
Positive would go to the “Home” (Pin E on terminated harnesses) and negative would go to
negative “Home” reluctor adaptor input A (PIN C on the terminated harness).
Wiring a Hall effect type Motronic sensor.
Hall effect type sensors have 3 wires, signal, power, and ground. Provide a power signal to
the power wire (must be switched ie no power when the ignition is off but do not connect to
an accessory line as power will disappear when the ignition key is turned), ground the ground
wire to a good grounding point, and the output wire should be connected to the Haltech
“Trigger Input” (Pin B on fully terminated harnesses). No in-line resistance is required for
Hall effect type Motronic sensors.
Hints for Setting up Motronic
The first thing required is to obtain a good RPM signal which can be checked by viewing on
the engine data in the Haltech software. With no fuel injectors connected or with the fuel
injectors disabled through the Haltech software you should get a steady 120-180 rpm signal
on cranking. Then set the “Timing Lock” to “On” and adjust the trigger angle/tooth offset
until you read the correct timing on the engine with a timing light ie if the timing lock is set to
10 degrees then adjust until you see 10 degrees BTDC timing. At this point set the “Timing
Lock” to “Off”, re-connect the injectors or enable the injectors through the software and start
the engine.
Note: For sequential fuel injection the Haltech will fire the INJ 1 channel as
the first to fire AFTER it has received a home signal. Therefore if you have a
firing order of 1,3,4,2 the INJ 1 channel would be the correct channel to use for
the car’s Injector 3 injector and so on.
E.2.3 Hall Effect Sensors
The Haltech hall effect sensor is a two channel device that can be used to trigger the Haltech
range of ECU’s in a wide range of applications.
The most common application is in a direct fire configuration where a synchronisation event
is required. As the Haltech hall effect sensor is dual channel, it can provide this
synchronisation pulse as well as the trigger signal.
The principle behind its operation is quite simple. As a magnet passes the sensor the output
state changes from high to low. The orientation of the magnets determines the output signals
from the sensor.
There are two types of hall effect sensors available from Haltech