Precautions for Diagnosing Trouble

Precautions for Diagnosing Trouble

- Before using SUZUKI scan tool, read its "Operator's (Instructions) Manual" to know how to use it.
- Diagnosing target control module / sensor only is not enough in order to accurately diagnose any trouble of CAN communication system. Check communication conditions of overall system (including control modules and sensors related in CAN communication) and diagnose trouble by putting those information together.
- It may be possible that CAN system has trouble because of blown fuse or low battery voltage. Before troubleshooting, confirm that fuse, battery voltage and charging system condition are normal.
- CAN communication error is detected if connector of control modules or sensor being connected to CAN communication line or applicable fuse is connected / disconnected while ignition mode is in "ON".
- Confirm that no equipment or option other than original parts is connected onto CAN bus. If any of those items are connected, disconnect it before troubleshooting.
- If any DTCs together with Lost Communication (Reception error) and/or Communication Bus Off are displayed, start troubleshooting of CAN communication first.
- Before diagnosing trouble, be sure to check equipment of vehicle being serviced as well as control modules and sensor connected to CAN communication line.
- Be sure to clear all DTCs after completing troubleshooting.