Precautions for Diagnosing Trouble
Precautions: General safety (00)
•Before using scan tool, read its Operator’s Manual to know how to use it.
•Diagnosing target control module / sensor only is not enough to accurately diagnose any trouble of CAN communication system. Check communication conditions of overall system (including control modules and sensors related to CAN communication) and diagnose trouble by putting those information together.
•It is possible that CAN system has trouble because of blown fuse or low battery voltage. Before troubleshooting, check that fuse, battery voltage and charging system condition are normal.
•CAN communication error is detected if connector of control modules or sensors being connected to CAN communication line or applicable fuse is connected / disconnected when ignition is “ON”.
•Check 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, check equipment of vehicle being serviced as well as control modules and sensors connected to CAN communication line.
•Clear all DTCs after completing troubleshooting.
•Diagnosing target control module / sensor only is not enough to accurately diagnose any trouble of CAN communication system. Check communication conditions of overall system (including control modules and sensors related to CAN communication) and diagnose trouble by putting those information together.
•It is possible that CAN system has trouble because of blown fuse or low battery voltage. Before troubleshooting, check that fuse, battery voltage and charging system condition are normal.
•CAN communication error is detected if connector of control modules or sensors being connected to CAN communication line or applicable fuse is connected / disconnected when ignition is “ON”.
•Check 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, check equipment of vehicle being serviced as well as control modules and sensors connected to CAN communication line.
•Clear all DTCs after completing troubleshooting.