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THE WITZL
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July 2002
 
Re: 4AGZE on/off SC switch Thu, 18 March 2004 07:35 Go to previous messageGo to previous message
If the car is running the factory ECU - there is a pinout which notifies you that the SC clutch is engaged and boosting.

This is usually done via an LED on the factory instrument cluster, but there is nothing stopping you hooking up a multimeter to that output and seeing if there is any change in the state of that pin (from memory, this is an open collector - meaning that it will go to earth when it is giving an output).

You can find the ECU pinouts over in the tech reference of www.club4ag.com

As far as hooking up a switch to manually engage/disengage the clutch - this is usually a bad idea. An old member did this on his 4a-gze and ended up rooting the clutch rather quickly from engaging the clutch while accelerating (for a nice little "kick"). Personally i dont think there is any need for a manual switch.

If you have an aftermarket ECU.. then i dont know what else you can do other than find the wire in the engine bay for the SC clutch and similarly monitor its state whilst driving.
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Read Message   4AGZE on/off SC switch papercutThu, 18 March 2004 05:47
Read Message   Re: 4AGZE on/off SC switch  THE WITZLThu, 18 March 2004 07:35
Read Message   Re: 4AGZE on/off SC switch EVOSTiThu, 18 March 2004 10:24
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