406Grommit
Full member
Hi guys,
I think i have a problem with my cars OBDII port as it has no voltage or any kind of reading on pin 7 (k-line). I only know there is surpose to be voltage of arround 3.5v on this pin from watching a youtube vid of someone checking the socket with a multimeter. The ground pins are working and i am getting the require 12v reading on pin 16 but no reading at all on pin 7.
As pin 7 is the ECU's communication line and is not working i cannot get any code readers to link with the ECU.
So far i have checked all fuses and am of the assumption that it is either a break in the wire, bad earthing or a faulty ECU not supplying the required voltage to pin 7. The only problem is im having trouble following the haynes manual electrical diagram. I have 3 plugs full of wires on my ECU but the haynes manual shows the ECU as 1 Block, not three sockets. Whats more is i cannot find any kind of numbering system on the plugs themselves so identifying what pin is what on the ECU plugs is my main concern.
Im hoping someone on here has possibly suffered from this problem before or has good enough electrical knowledge to help out a little.
Thanks
I think i have a problem with my cars OBDII port as it has no voltage or any kind of reading on pin 7 (k-line). I only know there is surpose to be voltage of arround 3.5v on this pin from watching a youtube vid of someone checking the socket with a multimeter. The ground pins are working and i am getting the require 12v reading on pin 16 but no reading at all on pin 7.
As pin 7 is the ECU's communication line and is not working i cannot get any code readers to link with the ECU.
So far i have checked all fuses and am of the assumption that it is either a break in the wire, bad earthing or a faulty ECU not supplying the required voltage to pin 7. The only problem is im having trouble following the haynes manual electrical diagram. I have 3 plugs full of wires on my ECU but the haynes manual shows the ECU as 1 Block, not three sockets. Whats more is i cannot find any kind of numbering system on the plugs themselves so identifying what pin is what on the ECU plugs is my main concern.
Im hoping someone on here has possibly suffered from this problem before or has good enough electrical knowledge to help out a little.
Thanks