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10-25-2011, 09:49 PM
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Registered User
Join Date: Apr 2009
Location: Edmond, OK
Posts: 393
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OBD II Connection Problem
Engine 5.3L from 2004 Sierra
When I plug efilive into my OBDII. It says PCM not detected, ECM not detected etc. I have the purple wire (pin2) from the OBD II going to pin 58 on the PCM (dark grn wire) serial data signal. Both the grounds are good on the OBD as well. And I have 12V on the orange. Is there something simple that I'm missing? Any suggestions? Any way to make sure the PCM is good?
__________________
1951 Chevy 3100/S-10: http://67-72chevytrucks.com/vboard/s...d.php?t=406072 1957 Chevy 3200 1971 2WD Blazer - Sold |
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