omidathari

Hi friends,
I need to perform some diagnostics on my car and I dont know how to hookup the OBDII scanner. Where is the connector on this car. Do I need a special connector?
I am sure this has come up before I couldn't sift my way thru to the answer. I would appreciate if you guys to share some information.
Thanks very much

fondu

You can not hook up an OBD II scanner because the 1994 has an OBD I connection. You will have to use a paper clip/wire to jump the TE1 to E1 port. The CEL will flash and the number of flashes corresponds with a 2 digit number and that will be your trouble code. Unfortunately the diagnostic info provided with OBD1 is very basic.

Gerf

There might be a few of these kicking around somewhere. try eBay.

https://techinfo.toyota.com/techInfo...rog&_nfpb=true

omidathari

I think I heard somewhere that you can hook up a serial port reader to the diagnostics connector and log information to a laptop. Is that correct? Does anyone know about that?

On another note, has anyone used the OBD1 to OBD2 adapter. Does that work to allow an OBD2 scanner to scan for information? Here is a link to the adapter cable:
https://www.ebay.com/itm/28496688712...3ABFBMsrv6s69h

CELSI0R

I have high doubts that adapter will work. Never tried it, and I don't know if anyone has

Also haven't heard of the logging to laptop approach, unless you mean using a scope and scope software on a laptop. Do you have a source on that?

This is your cheapest & an effective option:
http://www.lexls.com/tutorials/intro/codereading.html

If you want to view data on a graph, like reading the O2 sensor rich/lean signal, you would need to use a scope and probes. You can also monitor the voltages with a voltmeter

Example on an OBD-I V6 Camry that has 2 engine banks, like the LS.

There are probably other useful voltages/readings you can graph, but you would have to check the manual/online