Hello and thanks for any help .Trying to diagnose a no start condition . most likely immobilizer ..But would like to be sure . Key light acts normal till I crank on it .Starts in on position solid green for 2 or three seconds and goes off ,but when I crank it over with the new starter it blinks . Unfortunately it has a after market key . Checked all fuses ,start relay changed . changed the ignition switch early on, as it turned over very slowly but did start before I changed it .and I put pressure one way on key it would start ..Could not check key fob battery for its only a key . It did come apart but was a encapsulated board . says italy TK100 on it . .Whats is frustrating is it did start before I started working on ! Could the new ignition switch be bad from the get go ? Does it feed power also to other start systems ?
Any help appreciated Rt

 

hello again... Any help ."" What I described on post a normal key operation"" ? Also Have a low cost code reader and no codes . Any thing else to check ?
IF IT is the immobilizer,,, I looked up what immobilizers do . is it true it shuts down ecu and or injectors ? and is there a way to check that ? I do hear fuel pump kicking in .
It started and ran intermittent before I changed the starter and ignition switch n relay . I had it tested and was going bad .

Also if it is in lock out it can be expensive, any tips to save money ? Would have to tow a long ways and if dealer ,,big bucks !

 

When you have a good key, turn the key to the II position, but don't try to start the car. The green light will turn on for 2 seconds then shut off. When you turn the key off, the green light will blink 5 times to show the immobilizer reset.

The wrong key when you turn the key to the II position will have the green light on for 2 seconds, then continuously flash about 1 per second. The light turns off when you turn off the key.

Which matches your situation?

 

Sorry ,,just got time to get back on . I can get back to it in the morning and check . Thanks rt

 

Thanks for the info .GOOD NEWS i I have a good key or It reset at some point . I take it that the same behavior if its in theft mode ?
So my next question , because it seems to have multiple problems at the same time . And no codes are showing up on mt cheep scanner .
Q 1 could the new starter switch not passing power to ignition .. Or does it just feed power to starter thats now working fine after replacement ?
Its a cheeper dura laster . Also tried swapping good common relays to all there spots . checked all fuses .
Q 2 how to diagnose at this point ? Maybe auto zoney will do a loaner on a better scan tool ? I have the performace tool w2977.. When nothing worked before I did erase codes although there were none . Probably should not have done that .Just hope full thinking .

 

When you turn the key to start the car, does the starter motor crank the engine, or does nothing happen?

 

It cranks well ! does not try at all to fire up

 

The starter circuit is one-way, where the ignition switch sends power to the starter.

Crank/No-Starts can be caused by lack of spark, fuel, air, or compression. Scan for codes to possibly get a direction for testing.

Do you have an old spark plug for spark testing or a spark tester? Starting fluid to test for missing fuel?

Did you try adding some gasoline (1/2 gallon) to the gas tank?

 

Thank you PAhonda for your info! very helpful . Well I finally I decided to learn about the relays and built a crude relay tester with a small load built in "1157" . I bought a couple of the common relays and changed the start one right away as it was whining .Then unplugged each of the black ones I had a spare for and tried to no avail . After testing the brown ones and the blue one that's the pgm , fuel pump relay according to what I found on line . I found out the coil is shorted and blew a 10 amp fuse on the tester . Little bugger is the 55 dollar one, that's ok if it gets it to running again !.

Q .If that relay shorted , could it have blown a fuse some where ? And which one would it be ? Any one have a diagram of that ? I thought I checked them all ....
Keep u posted .Thanks rt

 

Which relay is the issue using the picture below?

Was the short on the load side of the relay or the coil side?


03 07 fuse box