Why does my OBD 2 connector not work?
I have two electrical problems – OBD II doesn’t work & a fuel gauge issue (front and rear tanks). Need OBD II to diagnose the fuel issue. An instructor at CPCC (Central Piedmont Community College) told me that the pinouts on the OBD II connector are as follows:
Why do I get No reading on my OBD codes?
Check your fuses to see if any have gone bad. Remember that your car or truck might have more than one fuse box. This should be covered in your owner’s manual or a proper service manual. Another reason for getting no reading is that the scan port has become clogged with dust after years of not being used.
Why does my OBD fuse not work on my Silverado?
New fuse, all works – except for the Dang fuel gauge issue. For anyone that wants to know, I plowed back into my Service DVD, and finally discovered that they don’t refer to this as the OBD connector – they call it the ‘Data Link Connector’! Nice. I suppose there’s some sensibility to that.
Where are the pins on the OBD 2?
4 & 5 are gnd, 16 is power, 6&14 are high speed bus (CAN bus – Control Access Network?), 2 and/or 3 are low speed bus. Does this sound right? The pins present are in positions 2, 4, 5 14 & 16. I measured ground on 4&5 but found no +12vdc on 16. Didn’t scope the other pins yet.
I have two electrical problems – OBD II doesn’t work & a fuel gauge issue (front and rear tanks). Need OBD II to diagnose the fuel issue. An instructor at CPCC (Central Piedmont Community College) told me that the pinouts on the OBD II connector are as follows:
Do you need a fuse for the OBDII port?
But, I believe that the “C4” version of SDS (the wifi version most shops have now) has its own power supply, so it can talk to the car’s systems over OBDII without that fuse. The older C3 version of SDS (with the RS232 breakout box), like most generic OBDII scanners, does require power from the OBDII port. One more update to this thread.
Check your fuses to see if any have gone bad. Remember that your car or truck might have more than one fuse box. This should be covered in your owner’s manual or a proper service manual. Another reason for getting no reading is that the scan port has become clogged with dust after years of not being used.
New fuse, all works – except for the Dang fuel gauge issue. For anyone that wants to know, I plowed back into my Service DVD, and finally discovered that they don’t refer to this as the OBD connector – they call it the ‘Data Link Connector’! Nice. I suppose there’s some sensibility to that.