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Home >> Toyota >> 1996 >> Supra 3.0 D, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Control System Tests W/Codes - Turbo) >> Introduction >> System Overview

System Overview

WARNING: This page is about a different variant/trim than selected.

The ECM monitors engine operation and contains a self-diagnostic system which stores Diagnostic Trouble Codes (DTCs). Self-diagnostic system is used to provide vehicle with an on-board diagnostic system which is capable of continuously monitoring the efficiency of emission control system, and to improve diagnosis and repair when system failures occur.

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