Discuss any problems, warranty, repair, or replacement issues you are having with your Vibe & Matrix
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Joined: Wed Oct 03, 2018 12:01 pm


Postby ktm500mx » Fri Oct 05, 2018 7:38 pm

I have a 2009 Pontiac Vibe GT 2.4L with 216K on the clock
went to inspection pass for everything but a OBDII communication
error put my machine on it which is a handheld unit and no
communications at all. Check no voltage at port I am get some
signals. so far no blown fuses. the car has been great so far
but this has me scratching my head.
Any thoughts appreciated.


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Joined: Sun May 06, 2018 4:28 am


Postby hogdoctor » Sat Oct 06, 2018 1:37 am

Find the wiring diagram and take it wire by wire... socket terminal #16 supposed to have power, follow it upstream until you find out where the problem is. Confirm all your grounds too while you're there (terminals 4 and 5) https://components101.com/sites/default ... Pinout.png

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Postby jolt » Sat Oct 06, 2018 11:02 am

Pin #16 is +volts and should be a green wire, while pin #4 is ground and should be a white wire with a black stripe. Be very careful measuring the voltage at the plug as shorting the wrong pins together can do major damage to electrical components and be very costly.

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Postby ktm500mx » Sun Oct 07, 2018 7:23 pm

thanks for the information I will post my findings
thx MIke

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Location: Sheffield, Pennsylvania


Postby zbyers » Mon Oct 08, 2018 5:15 am

I know you said no blown fuse, but I'd try to throw a new fuse into whichever one is for the cig lighter in the dash. OBD typically draws power from that same fuse.
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