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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / August 2007

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OBDII vs OBDI

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Ivan Vegvary - 05 Aug 2007 07:08 GMT
If I buy an OBD2 code reader will it also work on my 1995 Toyota Tercel.  I
don't know what the Tercel takes, but, all the adds for OBD2 readers say
they are compatible for 1996 and newer cars.  Are they backward compatible?

I never see ads for OBD1 scanners?  How come?

All advise appreciated.

Ivan Vegvary

2000 Chev Silverado
1995 Toyota Tercel
1994 Honda Accord
1991 Mazda B2600
1990 Nissan Maxima
1952 Pontiac
1948 Pontiac
Steve Austin - 05 Aug 2007 15:20 GMT
> If I buy an OBD2 code reader will it also work on my 1995 Toyota Tercel.  I
> don't know what the Tercel takes, but, all the adds for OBD2 readers say
[quoted text clipped - 13 lines]
> 1952 Pontiac
> 1948 Pontiac

Not backward compatible.  A bent paper clip should do the job on obd1
though.
Steve W. - 05 Aug 2007 17:13 GMT
> If I buy an OBD2 code reader will it also work on my 1995 Toyota Tercel.  I
> don't know what the Tercel takes, but, all the adds for OBD2 readers say
[quoted text clipped - 13 lines]
> 1952 Pontiac
> 1948 Pontiac

The answer is "Maybe" 93-95 are interesting years for ODB.  Depending on
the manufacturer and the model of the vehicle you could have either.
1995 was the official change year, but some makers released OBDII
vehicles earlier than that.

Some of the scanners out there (like the Actron Super Scanner) will read
OBDI, OBDII, CAN and a couple others if you buy the proper cables.
However none of the lower end scanners will read ABS, Airbag or body
module faults. They only pull power train codes.

Signature

Steve W.

 
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