Question about 2005 Ford Focus
My OBD ll port didn't seem to make a connection to the smog machine computer. It seemed like at first the car computer was connected and showed on smog machine data is being transferred from car into Smog machine. But towards the end the smog machine kept saying there the connection was not successful :(. Please help
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
when looking at your OBD2 port, those are the pin numbers with the wider row starting pin 1 at top left. (The alignment notch is bottom between 12 and 13).
Pin 16 is 12v vehicle power. make sure its there. If it isnt, look for a blown fuse to either CIG LIGHTER, OBD, DLC or DIAG in your fusebox. Pretty much all cars use the lighter/charging port fuse, or have a dedicated OBD2 fuse labelled as one of those or something similar.
If you have power at that pin with key on, check pins 4 and 5 for GROUND. Those are always ground regardless of key position, but check them KEY ON to make sure loads are active. If both of those show good ground, you have a connection or comm issue and it will likely require circuit checking and extended time best left to a professional with access to wiring diagrams and enhanced tools.
Posted on Feb 02, 2018
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Posted on Jan 02, 2017
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