No power to OBDII code reader


tcseadoo
08-22-2011, 12:18 AM
I have a 97 Rodeo 3.3L V6 and can't get the code reader to power up. I thought it was my reader so I bought a new one. Same problem, no power when I plug it into DLC. Used to work fine.
any ideas??
Thanks

snshddog
08-22-2011, 03:37 AM
Check pin 16 in the connector for battery power. It ties into the power the horn uses so check your horn fuse if there is no power.

tcseadoo
08-22-2011, 11:35 AM
Thanks. The horn works fuse is fine. Any other ideas?
T C

snshddog
08-24-2011, 04:32 AM
pin 4 and 5 should be ground, and don't trust that the horn working means there is power at the connector, check pin 16 for power

tcseadoo
08-25-2011, 03:36 AM
There is no power at terminal #16 on dlc. How can I fix this?
Thank you.
T C

snshddog
08-25-2011, 05:56 AM
The easiest and fastest way is to cut the wire at the back of the terminal, just the one for pin 16, leaving enough to attach to, then add a wire to a power source, leaving the other side where you cut not connected to anything.. the other way is to pull the harness apart and find then repair the break in the wire.

tcseadoo
08-25-2011, 06:28 AM
Thanks, Snshddog. I'll try the easy method and see if it works. Will post result.
T C

snshddog
08-25-2011, 06:50 AM
the wire should be green with a red stripe but don't quote me on that

tcseadoo
08-26-2011, 01:04 AM
Took your advice and now I have power to the DLC and will be able to read the codes on the OBDII reader once the self-testing cycle is complete. I mistakenly erased the codes when I plugged the reader in with my newly established 12 volt power.
Thanks again.
T C

Add your comment to this topic!