On Sun, 11 Mar 2007 22:33:57 GMT, "James" wrote:

Have you looked at the owner's manual? Sometimes a tone code is generated
to indicate the trouble area.
Jim

Yes, I've been through the owners manual *very* carefully, and no,
there are no tone codes.

It would be nice if they'd give you some indication but that doesn't
seem to be the case. Apparently factory service technicians can tap
into the ECM (Engine Control Module) and get more data.