Here is a general description on retrieving codes.
You will need to check online for the actual codes and their meanings. Systems built before 1996 will not show much compared to OBD2 systems built after 1996.
Turn ignition key on.
On Pathfinder, Pickup and Van models, proceed as follows:
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- Turn diagnostic mode selector on ECU to ON position and wait until inspection lamps flash.
- Note number of flashes, then immediately turn diagnostic mode selector to Off position.
Check engine light is on
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