Help: Retrieving trouble codes on 94

[tempfixit]

I have been attemptoing to retrieve any problem codes on a 94, I am doing this by jumper wire at the diagnostic connector by the starter. I do not get a response of blinking check engine lite of any sort. Checking the wires at the female connector plug with the ignition switch on I get power on the yellow and white wires but not the blue, which is the terminal wire that is jumped to retrieve the codes. Is there a fusable link somewhere or is this a pcm problem??

Thanks in advance for any advice.

[FixUrNissan]

what kinda car is it.. In most cases you can turn the diag screw on the ecm and get your red and green lights to flash on the ecm . to show you your code. Just keep in mind if you do that.. there are 5 modes .. It will blink both lights for the # mode you are on . As so as it goes to mode 5 it will erase all codes stored.. GL

[tempfixit]

Sorry: It is a 94 MercuryVillager/Nissan Quest. Looking in the Haynes Repair Manual I cannot find any info on this procedure. Is there a link I could use for reference to do this??

Thanks again for any help,
LS

[ericn1300]

Originally Posted by tempfixit

I have been attemptoing to retrieve any problem codes on a 94, I am doing this by jumper wire at the diagnostic connector by the starter. I do not get a response of blinking check engine lite of any sort. Checking the wires at the female connector plug with the ignition switch on I get power on the yellow and white wires but not the blue, which is the terminal wire that is jumped to retrieve the codes. Is there a fusable link somewhere or is this a pcm problem??

did you ever get a solution? my sister is having problems with her 94 Quest and autozone says they can't read code on one that old.