Initial Inspection and Diagnostic Overview

FOREWORD [MULTIPLEX COMMUNICATION SYSTEM]

- If the CAN system is considered to be the cause of the malfunction based on the repair order form and the malfunctioning symptom, follow the Troubleshooting Procedure.
- DTCs are also output due to a control module or sensor malfunction, or incorrect power supply. Verify the output DTCs and first inspect the DTCs not shown in Multiplex Communication System - DTC Table.
- If there is an open circuit in the communication lines, it is possible that signal error DTCs may be output in addition to communication error DTCs. Perform (HS-CAN) [Multiplex Communication System], (MS-CAN) [Multiplex Communication System] if the communication error and signal error DTCs are output simultaneously.

Troubleshooting Procedure





*1
Multiplex Communication System - DTC Table
*2
Multiplex Communication System
*3
16:ER12
*4
(HS-CAN) [Multiplex Communication System] / (MS-CAN) [Multiplex Communication System]
*5
Scan Tool Testing and Procedures