My SC300 didn't pass smog check because the engine light didn't come on for a few seconds when the ignition key was turned. I have checked the bulb and it seems to be OK. Even replaced it with another one. Does anyone know if there is a fuse for the engine light? How can I troubleshoot the wiring? Which wire(s) going to the instrument panel is for the engine light?

Thanks.

 

i've never heard this before.... failing emissions because the cluster light didnt' come on?
I'm no electronic guru... but there are a few here that are really good... anyone chime in?

 

with the car off, turn the key to the on postion (don't start it) does the check engine light not come on?

 

No, the light didn't come on when I turned the key to the on position. The problem was a loose ribbon cable in instrument panel's circuit board.

Thanks.