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U1066 Diagnostic Trouble Code Discussion for February 2010

loss of comm w/rear int module


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Trouble Ticket Help Requests for DTC U1066
Help Request Posted
2002 Cadillac DeVille 4.6L state insp failure VIN: 1G6KD54Y42
U1066: loss of comm w/rear int module. hello cady gurus i need a little help !! the codes indicate serial data line shorted to Bat + or no comm to several modules !! i scope the data buss term # 2 data link connector and pin 59 on pcm and get a sporadic square wave 0 to 7 + volt it shows a flat lin...
February 18, 2010
2002 Cadillac DeVille 4.6L state insp failure VIN: 1G6KD54Y42
U1066: loss of comm w/rear int module. hello cady gurus i need a little help !! the codes indicate serial data line shorted to Bat + or no comm to several modules !! i scope the data buss term # 2 data link connector and pin 59 on pcm and get a sporadic square wave 0 to 7 + volt it shows a flat lin...
February 19, 2010
2002 Cadillac DeVille 4.6L state insp failure VIN: 1G6KD54Y42
U1066: loss of comm w/rear int module. hello cady gurus i need a little help !! the codes indicate serial data line shorted to Bat + or no comm to several modules !! i scope the data buss term # 2 data link connector and pin 59 on pcm and get a sporadic square wave 0 to 7 + volt it shows a flat lin...
February 18, 2010
2002 Cadillac DeVille 4.6L state insp failure VIN: 1G6KD54Y42
U1066: loss of comm w/rear int module. hello cady gurus i need a little help !! the codes indicate serial data line shorted to Bat + or no comm to several modules !! i scope the data buss term # 2 data link connector and pin 59 on pcm and get a sporadic square wave 0 to 7 + volt it shows a flat lin...
February 19, 2010