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OBDII non-compliant

I have a 1994 Pontiac Bonneville that is non-ODBII compliant but has a J1962 DLC plug underneat the steering column. The code reader displays LINK ERROR when I try to read the error codes. These are the pinouts on the type A connector:

(4) black (5) black with white stripe (8) black with white stripe (9) brown (14) green (16) orange

all other contacts are unpopulated.

Does anyone know how I can read the codes with this configuration? Any help much appreciated.

Reply to
Jon G.
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This was the year of OBD 1.5 where

(4) ground (5) ground (9) data stream (16) battery voltage

on the 16-pin J1962 trapezoidal connector adapted from the 16-pin DB15RA rectangular connector (pinouts are the same).

That is, I guess what I need is an OBDI code reader such as,

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with an adapter that goes from J1962 to DB15RA (16-pin trapezoidal to 16-pin rectangular) such as,
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Then I am supposing I can read the OBD codes.

Reply to
Jon G.

Reply to
Jon G.

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