Haltech E6K - Manual (Page 22)

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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. The absolute range of sensor movement is not
important as the sensor can be calibrated using the programming software.
Your engine may have a Throttle position sensor already fitted and it is often possible to make
use of this TPS. The Haltech supplied TPS has a resistance value ranging from 0 to 10k
Ω
.
The resistance value of the installed TPS does not have to be the same since the ECU uses a
throttle calibration function to determine the position of the throttle based on the signal
received from the TPS. Be sure to wire the TPS so that the ECU sees a closed value when the
throttle is closed, the Engine data page field “throttle position” should read “closed” or “0%”
when the throttle is closed.
Note: 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.
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 prevent
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 but do
not connect the ignition sub-loom to the main loom until the ignition settings in the ECU
are verified by connecting the ECU to a computer.
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.