Thread: Idle-valve(s) wiring to E6X

Does anyone have a clue on how I can wire my Haltech E6X system to the IACV? Is it posible? The E6X has 4 wires named Idle 1, 2, 3 and 4, not too much of help to me. Thanks.

AFAIK most sr20's have two idle up solenoids. they are both 2 wire.

i would imagine that in your case you would want to wire one of the solenoids up with an ignition switched + to one terminal and one of the idle up wire from the haltec to the other.

excerpt from manual here:
14.1 Description
A bipolar stepper motor may be used to control the ingress of additional air to the engine
while the throttle is closed. This is useful for maintaining steady idle under changing load
conditions, e.g. as air conditioner compressors or headlights are switched on and off. The
stepper motor may also be programmed to increase the idle rev-rate just after starting, or
while the engine is still cold.

14.2 Using the Idle Speed Motor
In order to use the idle air control function, you must have the following:
- a suitable idle speed stepper motor∗; OR a suitable Bypass Air Control Valve∗∗
- an idle air circuit bypassing the throttle plates;
- E6K programming software and cable.
∗NB: use only a bipolar stepper motor with two separate windings (four wire), each with at
least 30 ohms resistance. Your HaltechTM representative can supply you with a suitable motor.
Use of three- wire stepper motors may damage the E6K ECU.
∗∗NB: If you wish to use a Bypass Air Control (BAC) valve to operate Idle Control, you must
carry out all of the same settings as what one would do for a normal stepper motor. The only
difference is that you should disable Idle Speed in the first entry in the Idle Control software
and select BAC as one of the four PWM outputs instead. This will ensure that you are using a
BAC valve to do Idle Control and have turned the stepper motor output off. See Section 16
for more detail on the BAC option and PWM outputs.
The idle air circuit draws filtered air into the engine around the throttle plate, as suggested in
figure 14-1. Normally this is done via an air bleed into the manifold. A valving arrangement is
used so that the idle speed motor pinches off the air into the engine. When the engine is below
the desired idle speed, the stepper motor's plunger retracts to allow more air to enter the
engine. When the idle speed is too high, the plunger extends. If your engine does not already
possess an idle air bypass circuit, a suitably machined aluminium block is available to mount
the idle speed motor. A balancing system or plenum arrangement should be used if employing
individual throttle bodies, so that all cylinders benefit equally from the additional air.

parts underlined and in italics apply here

basically once you connect it up it must be configured correctly in the software.

the four wires coming from the ecu are for a bipolar stepper motor idle-up valve. in you case you should use wire #1

Thank you sr-starlet, you have been of great help. I'll see if I can get this thing running

By that you mean the PWM output, right? So, ign + and a PMW wire to control the valve?

SR20s have three idle controls, two of which are electric, one of which needs to be controlled by the ECU. I'd get into it but it's late right now.

Well, we have the two electric ones, the manual adjustment and the water-heated-thingy at the throttle

yea thats right.
im not at all familiar with haltecs but most ecu's operate on the same principals just slightly different execution.

generally you can figure out most things by having a good read of the manual