Haltech HT045650 User Manual

Page 7

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Alternator (ALT)

The Alternator output connects directly to the OEM Alternator.
The +12V signal and alternator excite wires are pre-wired into the loom

Camshaft Position Sensor Input (CAM)

The Camshaft Position Sensor Input (CAM) connects directly to the OEM camshaft
position sensor located at the top of the engine block at the rear of the valley cover.

The camshaft position sensor is used in conjunction with the crank angle sensor to
determine crankshaft position and stoke of the engine.

Crank Angle Sensor (CRANK)

The Crank signal connects directly to the engine Crank Angle Sensor located in the
right rear of the engine block behind the starter motor.

The Haltech ECU uses this signal to accurately measure crankshaft position and engine
speed.

Engine Coolant Temperature Sensor (ECT)

The Engine Coolant Temperature Sensor input connects directly to the OEM engine
coolant temperature sensor located towards front of the head of the left bank.

The Engine Coolant Temperature Sensor provides the ECU with a signal that allows
the ECU to know the current engine temperature.

Ground (GND)

The Ground cable connects directly to the engine block.

Warning this in NOT the earth cable for the engine, please ensure that you earth your
engine with an earth strap from the block of the engine to the chassis of the car.
Damage to the ECU and or terminated harness may result if this is not done.

Ignition 1-8 (IGN1, IGN2, IGN3, IGN4, IGN5, IGN6, IGN7, IGN8)

The ignition outputs connect directly to the ignition coils.
Please ensure the correct ignition output is connected to the corresponding coil on
the engine. Please refer to the label on the harness for correct cylinder coil allocation.

Injection 1-8 (INJ1, INJ2, INJ3, INJ4, INJ5, INJ6, INJ7, INJ8)

The injector outputs connect directly to the injectors.
Please ensure the correct injector output is connected to the corresponding injector in
the engine. Please refer to the label on the harness for correct injector allocation.

Manifold Absolute Pressure Sensor (MAP)

The Manifold Absolute Pressure Sensor is located on the intake manifold.
Connect the MAP labeled connector directly to the sensor.

The MAP sensor measures changes in the intake manifold pressure which result from
engine load and RPM changes and converts these into a voltage output so the ECU
knows the manifold pressure.

Vehicle Speed Sensor Input (VSS-Input) (optional)

The VSS-Input does not support the OEM reluctor style sensor.
Provisions have been made to allow the user to connect a supported Hall effect style
vehicle speed sensor.
The sensor provides information on vehicle speed to the Haltech ECU which can be
used to display vehicle speed, detect gears or controlling of switches etc.

Connect a supported Hall style sensor as follows.

Pin# 1: Blk/Wht – Sensor Ground
Pin# 2: Gry/Red - +12V Sensor Power
Pin# 3: Grey (Shielded) – Sensor Signal
Pin# 4: Unpopulated

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