I have one car shut down the cpu leds green (power) and red led are steady , no yellow led, and there's no any output leds on .Test cpu on other car and is good. Any suggestions. Thanks all.

the usual suspects for this type of problem are; CPU, I/O interface, Timer,Program( the board only not the actual program), Card Rack, and Power Board. Also multiple bad input boards can cause it to off in the weeds like this. As usual you have to become a board jockey to find the problem. Hopefully you have another unit, or spare parts. Good Luck.

Thanks Jon for your help.

Thanks to Jkh and Jon jay, the problem is the power supply board.