Idle Switch

[And_44]

Hello,

Figure I'd post this in the "newb" section. I've been searching for a bit now to the answer to this question and having a hard time getting any answer.

On the 1g's there is a 1 wire on/off switch for the Idle switch it detects when the throttle is open or closed and tells the ECU the status.

My question is what happens when the wire running from this switch to the TPS wire harness is bad?

What are some of the behaviors to expect from this switch not getting it's signal out?

 

[LiquidX]

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[steve]

If the wire is bad the ECU doesn't know the throttle is closed. If you read the fuel section of the 1G Technical Manual your learn a ton about how the system works including what the ECU does with the IPS.

The big things are idle speed management, dash pot emulation, and decel fuel cutoff.

Searching "Idle Switch" using a "search title only" search yeilded.

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If use one of the wisemen's names to the post by user in search you can avoid getting swamped to start with and usually find the answer.