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LAN DIAGNOSIS AND REPAIR WORKFLOW LAN-21 < BASIC INSPECTION > [CAN FUNDAMENTAL] C D E F G H I J K L B A O P N • For abbreviations, refer to . DETECT THE ROOT CAUSE Identify the root cause using the created diagnosis sheet. Identifying the root cause • Draw a line on the diagnosis sheet to indicate the possible cause. Narrow the search. NOTE: • Color-code when drawing lines. • Do not draw a line onto a existing line. • Drawing a line is not necessary if the circuit is shorted. Refer to “Present Error — Short Circuit —”, “Past Error — Short Circuit —”. Refer to the following for details of the trouble diagnosis procedure. • “Present Error — Open Circuit —” • “Present Error — Short Circuit —” • “Past Error — Open Circuit —” • “Past Error — Short Circuit —” NOTE: When the root cause appears to be a branch line or short circuit, be sure to check the control unit as well as the communication line. Present Error — Open Circuit — PKID1213E 2011 Pathfinder |