How To Proceed With Troubleshooting

HINT: 

• Use these procedures to troubleshoot the LIN communication system.
• *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. INSPECT BATTERY VOLTAGE 

   Standard voltage

   11 to 14 V

   If the voltage is below 11 V, recharge or replace the battery before proceeding.

   NEXT: Go to next step 

3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
   1. Using the Techstream, inspect the CAN communication function to make sure that there are no malfunctions in the communication system. Refer to DIAGNOSIS SYSTEM .
      RESULT
      
      

      Result	Proceed to
      No DTCs are output	A
      DTCs are output	B

      B → Go to CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 

      A: Go to next step 

4. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* 
   1. Using the Techstream, inspect the LIN communication function to make sure that there are no malfunctions in the communication system.
      RESULT
      
      

      Result	Proceed to
      No DTCs are output	A
      DTCs are output	B

      B → Go to DIAGNOSTIC TROUBLE CODE TABLE. Refer to  DIAGNOSTIC TROUBLE CODE TABLE  

      A: Go to next step 

5. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Refer to DATA LIST/ACTIVE TEST 
   2. Refer to TERMINALS OF ECU 

      NEXT: Go to next step 

6. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

7. CONFIRMATION TEST 

   NEXT → END