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Old 12-23-2015, 03:14 AM   #1
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Default 97 thru ?

Hey guys

i'm working at an autoparts company, we check odbII codes every day

my 97 olds 88, like all other gm cars of the day, abs light has activated

it started randomly, then just stays on now days, scanner shows " no communication " where the abs computer has died

so what has actually happen to all these cars ,, , something burn out on pcb abs board?

all wires and fuses are good

thanks
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Old 12-23-2015, 06:03 AM   #2
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Well, you have 2 choices, use a GM Tech2 to see if the module indeed is still working or if the data line is bad or just swap the module and see what happens.
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Old 12-23-2015, 11:27 PM   #3
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Like Mike says, loss of communication with a module happens several ways: loss of power, bad ground, bad module, or a problem with the data line(grounded/open).....
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Old 12-28-2015, 06:13 PM   #4
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techII... I had a garage hook up, still "no communication"

even our ODBII scanner will produce same

there is a common problem here... I am guessing the board
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Old 12-29-2015, 12:06 AM   #5
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If you can't communicate with a module, you disconnect the harness to it, check for power and ground, and that you are getting fluctuating data on the data line......if ok, replace the module.....
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