Initial Inspection and Diagnostic Overview

Fig. 18 Diagnosing Electronic Control System (Part 1 Of 3):

Fig. 18 Diagnosing Electronic Control System (Part 2 Of 3):

Fig. 18 Diagnosing Electronic Control System (Part 3 Of 3):

Do not open the cover or the case of the ECU and various computers unless absolutely necessary. If the IC terminal are touched, the IC may be destroyed by static electricity.
Refer to Figs. 18, when diagnosing the electronic control system.