Okay I posted about a week ago about my cel. Well Ive read about 10 different posts all with different answers. Some say plug the black some say pkug the green some say the led is on the ecu and some say its on the 02 monitor. Okay well I need the truth for sure. I have a 1988 gl-10 wagon. So I see the connectors and the ecu. What process do i go through to get my cel code. I see the green led in the back of the ecu but it flashes steady green flashes with the key on the on position. I dont get it. Someone let me know!!! Oh yeah I have also been to this website http://www.usmb.net/repair/?CurrentDirectory=FOLDER_3f29b58f4430b8.49200047/&FileType=Article&File=ARTICLE_3f2c055f4862e9.39782181.art

It doesn't really say where the flash is from. Thanks everyone!!!!

ecs = check engine

 

led on = rich led off = lean

 

red led = ea81 green led = ea82

 

for "U-CHECK" mode, do NOT connect connectors

 

for "D-CHECK" mode, connect GREEN connectors

 

if you are in "D-CHECK" mode, the ecs or check engine light will blink

 

you MUST be in "D-CHECK" mode to set timing

 

you Must be in "U-CHECK" mode to read present codes