The throttle position sensor (tps), Mount ignition module – Haltech E6A User Manual

Page 20

Advertising
background image



20

1.3.4. The Throttle Position Sensor (TPS)


The throttle position sensor is mounted to the throttle butterfly shaft to measure its rotation. A
TPS is common on many late model engines and the Haltech sensor should attach with little or
no modification. The throttle shaft must protrude from the side of the throttle body. This may
require the machining of the throttle body or the manufacture of a new throttle shaft. The inner
mechanism of the sensor rotates with the shaft. If the shaft is round then file a flat surface on
the shaft so that it will pass through the sensor assembly. The TPS should be mounted against
the side of the throttle body, using two screws, such that the throttle shaft and the sensor
mechanism can rotate freely. Make sure that the axis of rotation of the shaft is exactly
aligned with the axis of rotation of the sensor. Also, do not use the TPS as a throttle stop.
In either case, the TPS will be damaged.
The absolute range of sensor movement is not
important as the sensor can be calibrated using the programming software.

1.3.5. Mount Ignition Module.


The Ignition Module has to be mounted on a flat surface (eg. the firewall) to ensure proper
heat dissipation and to avoid stress on the wiring connections. Also it is important to
preventing the module overheating by mounting it away from hot components such as exhaust
manifolds and turbochargers.

Included with the Haltech wiring harness is the Ignition Sub-loom. This connects the Ignition
module to the Main Harness. Locate this loom and connect it to the ignition module.

Connect the 3 flying leads. The black wire with the eye terminal is a ground connection. This
should NOT be grounded to the same point as the ECU to prevent ignition noise getting into
the power supply circuit of the ECU. The blue wire goes to the negative side of the coil. The
red wire should be supplied with Ignition On 12 volts. This can often be obtained from the
positive side of the coil.

NOTE: IF USING THE HALTECH IGNITION MODULE CONSTANT DUTY
CYCLE SHOULD BE SELECTED IN THE IGNITION SETUP PAGE.

Advertising