ignition relay

[SlickSL2]

im working on a 99 lesabre. the car would not start..SO..checked the battery, that was good. pulled the starter..got it tested, it was toast. so i put the new one in, and the car still doesnt start. it doesnt even click. i was wondering where the starter relay was (which one) and what you all think this might me.

thanks.

[maxwedge]

Is the security lite on or flashing when this will not start?

[SlickSL2]

no it isnt. the radio and everything turns on...no SES or dash lights are on. the car doesnt click or anything. i was going to try and swap out relays, but i cant find out which relay is for what. any help would be appreciated.

[imidazol97]

Originally Posted by SlickSL2

no it isnt. the radio and everything turns on...no SES or dash lights are on. the car doesnt click or anything. i was going to try and swap out relays, but i cant find out which relay is for what. any help would be appreciated.

If the lights for the security and other engine functions don't light when turning the key to "on" then you should check the igniton switch itself. It's on the base of the column and on top if I understand what others have said.

When you turn the key to "on" the security light and everything else comes on, the security light stays on for a few seconds and then goes off as the box recognized the resistance for the key inserted, and then the car is able to crank when the key is rotated further. If the wrong key resistance is read, the security module tells the computer that it has the wrong key and no injector pulses and no crank is enable to the starter relay. It will wait three minutes and then will read the next key inserted to see if the right resistance chip is present; then the start and injectors will be enabled.

First make sure your security light is going through theright cycle readng the resistance chip in the key. Do you have a second key for the car to try?

[SlickSL2]

yes i have a second key and i had tried both. what does it mean if the security light does not come on then shut off? is there a fuse or something blown? let me know thanks!

[maxwedge]

Check the ign fuses under the hood, should be a large black relay/fuse center. If all ok you will either need a factory wiring diagram to check for the ign circuits or professional help. If the inst. lites on the dash and sec./ck engine lites don't come on key on, this requires some more intricate diagnostics as mentioned.

[SlickSL2]

Ok so. New starter. Checked all the fuses and relays. Still nothing. The security light does not come on when I turn the key to the "on" position. I have 2 keys for the car and have tried both. What should I try next?

[maxwedge]

Sounds like the security system here, look at this link and you will see the cicuitry involved. diagram 42 on the page. http://autozone.com/servlet/UiBroker...3d8015ec20.jsp

[Sachmoe]

Hi everyone,

I am having a similar problem as the original poster, with the exception that the Security light now will not stop blinking. This struck me when I went to stop into the grocery store, came back out and the car would not crank at all.

I've poked around online but I have not been able to find an answer (although I am probably not searching well).

Any suggestions or thoughts?

[HotZ28]

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