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1998 Toyota Supra ECM Replacement & PCM Programming Guide

1998 Toyota Supra ECM Replacement & PCM Programming Guide

The 1998 Toyota Supra (3.0L) engine control module is the primary computer managing fuel delivery, ignition timing, emissions and transmission functions. When this unit fails, symptoms include no-start conditions, stalling, check engine lights and diagnostic trouble codes. Professional replacement and programming is required to restore proper operation.