Cruise Control

[Acres90]

I have a '99 with 115k on the ticker. Cc does not work but green light does come on. Where should I start looking for problems?

 

[Donabed Kopoian]

I think those Corollas were the GM venture era Corollas. Check the brake light bulbs and make sure they all work. If they are working, it may need to go to a dealer, as it would be difficult to diagnose online.

 

[Acres90]

Nope, all lights work. Take it to dealer?...now that's a great idea! lol

 

[Donabed Kopoian]

Or any shop, LOL!

There are a ton of reasons why cruise control may not work. Faulty brake switch, bad wiring, a faulty throttle modulator, bad vehicle speed sensor.

If you're brake light bulbs function (not tail light, brake light), then we can rule that out as well as a brake like switch. If the speedometer functions correctly, we can rule out the vehicle speed sensor.

So you're left with a faulty cruise modulator, a disconnected or broken cable from the modulator to the throttle body (since those cars are not drive-by-wire), or bad wiring.

Just make sure that if you tackle this on your own, you work it out logically and don't guess and start dumping parts into the car.

 

[Donabed Kopoian]

It is hard to work things out online and it does take longer. Just how it is.