Diagnostic Tests: Notes

WARNING: This page is about a different car, the 2003 Toyota Matrix and 2003 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before performing any diagnostic test, see SELF-DIAGNOSTIC SYSTEM for diagnostic system functions and system diagnostic procedures. Also check for any related Technical Service Bulletins (TSBs). For component location, see appropriate illustration in THEORY & OPERATION article.

NOTE: To identify ECM terminals referenced in testing, see illustration. See Fig 2 or Fig 1 .

Fig 1: Identifying Engine Control Module Connector Terminals (3-Speed A/T & M/T)

Fig 2: Identifying Engine Control Module Connector Terminals (4-Speed A/T)