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-   -   No connection to ECM ?? (https://67-72chevytrucks.com/vboard/showthread.php?t=651252)

ACII 11-28-2014 06:24 PM

No connection to ECM ??
 
HY again

today i also wanted to read the ECM..but i get no connection to the interface.

So far i can connect the laptop with the OBDII via bluetooth...

But i get no connection to the ECM

I check all the wires ...

-connected Pin 16 of the OBD2 port to a constant 12v
- tapped (soldered) pin 2 of the OBD2 port to the back of the PCM at Pin 58 (dark green)
- Connected pin 4 and 5 together and grounded them

Any ideas ?
Thanks


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