Toyota Camry:

OBD connector

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# 1  6/26/2011 1:29 PM

jet2met
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Registered: 6/26/2011
Posts: 2

OBD connector

'97 Camry 4-cyl. OBD connector problem. Inspection station cannot link to the computer.

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# 2  6/26/2011 3:56 PM

Administrator
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Registered: 9/27/2008
Posts: 1286

Re: OBD connector

There's no easy answer.

If the inspection machine shows no data, I would confirm the problem with a scan tool.

Also, be sure the check engine light is working properly -- On with ignition ON, and Off with the engine started. That tells us the ECM is working, and it may just be a break in a circuit to the DLC (Diagnostic Link Connector).

After that it will require a schematic and a digital volt/ohm meter to check all circuits to the DLC (power, ground, communication, etc.).


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# 3  6/27/2011 12:52 AM

jet2met
New member
Registered: 6/26/2011
Posts: 2

Re: OBD connector

Administrator wrote:

There's no easy answer.

If the inspection machine shows no data, I would confirm the problem with a scan tool.

Also, be sure the check engine light is working properly -- On with ignition ON, and Off with the engine started. That tells us the ECM is working, and it may just be a break in a circuit to the DLC (Diagnostic Link Connector).

After that it will require a schematic and a digital volt/ohm meter to check all circuits to the DLC (power, ground, communication, etc.).

you right it not easy answer because it work on my obd scanner but not inspection scanner and i try two station that why it puzzle me and by away i did check the power circuit it good 12v. Ground circuits are more than 1ohm and the 4 circuit i don't know how to do i don't even understand what they say.

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# 4  7/27/2011 5:54 PM

Administrator
Administrator
Registered: 9/27/2008
Posts: 1286

Re: OBD connector

You'll need the proper schematic and service information to test for the correct grounds, power sources, and data lines at the DLC (Diagnostic Link Connector).

Without the right information and experience you might be paddling upstream.


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