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Link for ODB and codes 200 1991

Yes the OBD has 3 test modes .
Diagnostic test mode 1: fault code Retrival

Diagnostic test mode 2:System sensor signal Test as to whether signal are reeived from certain sensors and switches .(you can hear or fell them work )

Diagnostic test mode 3: injection system Component Test
(You can also check the EGR if equipped)

Look it this site for all the codes and how to use the OBD .

http://www.altech.com.pl/wbt/_aferh2/ccvv.htm

They are a must have .
Print them out and put them in your car .Great on the side of the road .
LOL :) V

Ps You and I would never work on a PC w/o unpluging the cord and touching the case first, before the board . Remember it is a computer. Think of it like that.

Hope to see you out on the road , Later






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