I am pretty sure the diagnostics weren't added until the SMEC came out. The OTC doesn't have any diagnostic options when connected to an 87 LM but it does when connected to a SMEC or later.
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I am pretty sure the diagnostics weren't added until the SMEC came out. The OTC doesn't have any diagnostic options when connected to an 87 LM but it does when connected to a SMEC or later.