I am trying to set my timing on my 1991 Acura da and when i short the service check connector it does not turn on the check engine light?

 

i believe the 90-91 models blink the codes directly off of the ecm which is under the passenger carpet. you jump the service connector after you set the timing belt and before you start the car to set the ignition timing so that it takes the ecms timing out of the equation

 

Yes but doesn't it suppose to turn on the check engine light tO know that it's in service mode

 

yes, correct. does it come on when the key is on II (when all cluster light indicators are on) maybe the person before you removed the bulb.

 

It turns on with the rest when you start it then it goes of but it is suppose to stay on like if u had a problem but it doesn't

 

Does any one know if it suppose to stay on