6 electric thermatic fan control (tf) – Haltech E6K User Manual

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Access to the wiring of the torque converter lockup solenoid and 4th gear/overtemp
switch;
E6K programming software and cable.


Wire the TCC solenoid to the appropriate output line on the output connector, and, if it is
available, the 4th gear/overtemp signal to the Aux. In line (the blue flywire on the E6K main
harness.) The 4th gear/overtemp signal must be a pull-to-ground style signal. If you are not
using this feature, leave the blue flywire disconnected, but insulate the end to ensure sure that
it will not short to the bodywork.

To determine vehicle speed, a square wave signal must be applied to the road speed input
connector. This connector possesses ground and 12 volt signals for powering a Hall effect or
optical sensor. A magnetic or reluctor type signal is incompatible, and you will need to
convert the output from this style of pickup to a square wave. The Haltech

TM

RA7 Reluctor

Adapter would perform satisfactory conditioning.

Once the wiring is complete, run the E6K software in ONLINE mode and go to the
Identification page. The parameter Road Speed Value must be set with the number of pulses
expected per kilometre. If you are unsure of the exact value for this parameter, enter an
approximate number and check against the vehicle's speedometer. Adjust the Road Speed
Value until the road speed displayed on the Engine Data Page and the actual vehicle speed
agree.

Go to the Options page in the software, and select the Torque Converter Lockup function on
the appropriate output. The map for the TCC function indexes the vehicle road speed against
the throttle position. When, for any given throttle position, the road speed is greater than that
displayed in the map, the solenoid will be energised. The road speed must then fall 8 kph
(5mph) for the clutch to be disengaged. This 8 kph hysteresis should prevent solenoid
oscillation during cruising near the cut-off point. The default map activates the solenoid at 70
kph at smallest throttle opening, and increases the activation threshold to 160kph at 70%
throttle. Although this map may be customised as required, it is advisable to never engage the
lockup below 60 kph (40 mph).

Note: When using the TCC function, the Aux. In & Aux. Out Function in

the Identification must be set for Torque Converter Control. When using TCC,

other functions that use the Aux. Input line cannot be used.


16.6 Electric Thermatic Fan Control (TF)


This function can be used to switch on a thermofan when the engine temperature exceeds a
certain value. The fan will stay on until the engine temperature drops below a second value.

Note: The electric fan cannot be driven directly by the ECU. A relay must be

used to switch the high currents drawn by the fan.


To use this function, you must have the following:

An electric thermofan, fused and relay switched;
E6K programming software and cable.

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