8 anti-stall solenoid control (as), 9 turbo timer (tt) – Haltech IG5 User Manual

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To use the shift light function, you will need the following:

- a dashboard lamp or buzzer;
- IG5 programming software and cable.


The lamp or buzzer should be wired to +12V on one side, and the other to the ECU. The lamp
used must not draw more than 400mA of current. It is recommended to use a relay if running
a high wattage bulb. Alternatively, a high intensity LED may be used. If so, use a series
resistor of 330 ohms to limit the current through the LED to around 40mA.

Once the wiring has been installed, run the IG5 programming software and go to the Options
page. Select the Shift Light function on the appropriate output and set the value as required.

13.8 Anti-Stall Solenoid Control (AS)


A solenoid air valve in the manifold may be used to allow extra air into the engine during
cranking or extremely low rpm. This can aid in starting the engine, or in preventing it from
stalling if engine revs drop too low.

To use this function, you will need the following:

- a suitable solenoid air valve mounted to the manifold;
- IG5 programming software and cable.


If the solenoid air valve is too large, the engine may stall because of its opening. The valve
should be of appropriate size to increase the idle speed by several hundred rpm. Wire the
solenoid through the Auxiliary I/O connector. Run the IG5 programming software in Online
mode and select the Anti-Stall function on the appropriate output.

There is only one parameter to be set with this function. That is the rpm below which the
valve will be opened. The default setting for this parameter is 500rpm.

13.9 Turbo Timer (TT)


When an engine is switched off, oil is no longer being pumped to the turbocharger. This is
common cause of turbo wear if the turbocharger is not allowed to slow down before an engine
is switched off, cause it to spin for an extended time unlubricated. This function controls the
ignition power via relays to keep the engine running for a period of time after the ignition
switch has been turned off.

Care should be taken to make sure the relays are wired correctly, and that an over-ride switch
has been fitted to allow the engine to be switched off manually while the turbo timer is active.
See figure 17.6 for the correct way to wire this output. The ECU detects if the ignition switch
has been turned off via the Auxiliary Input/Output. Therefore, the Auxiliary Input/Output
Function must be selected as Turbo Timer in the Identification.

There are three programmable parameters. The first two are the minimum Air Temp. and the
minimum Coolant Temp. If the inlet air and the coolant temperatures drop below their

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