Editing Z31/SENSORS/aac php

{{ImportedFrom|site=Xenonzcar|title=Z31 (A.A.C.) Auxiliary Air Control Valve (Turbo Only)|url=https://dev.z31library.com/xenonzcar_archive/z31/SENSORS/aac.php.html|archive=https://dev.z31library.com/xenonzcar_archive/z31/SENSORS/aac.php.html|fetched=2026-05-15}}

== Z31 (A.A.C.) Auxiliary Air Control Valve (Turbo Only) ==

The '''AAC (Auxiliary Air Control) Valve''' is attached to the right side of the intake manifold. The ECU actuates the AAC valve by an '''ON/OFF pulse'''. The longer the ON duty is left on, the larger the amount of air that will flow through the AAC valve.

https://dev.z31library.com/xenonzcar_archive/z31/images/Sensors/AACvalve.gif

''WARNING'' - Do this modification at your own risk. We Are not responsable for any issues of your own doing.

=== Common Problems ===

* Idle issues or surging
* Valve sticking or not actuating
* Electrical connector or wiring faults

=== Troubleshooting ===

To test the AAC valve, follow these steps:

https://dev.z31library.com/xenonzcar_archive/z31/images/Sensors/AACtroubleshootingfull.png

* Refer to the diagram above for proper test points.
* Check for correct voltage and resistance as shown.
* Inspect wiring and connector for corrosion or breaks.
* If the valve does not function, it may need cleaning or replacement.

[[Category:Imported from Xenonzcar]]