How To Proceed With Troubleshooting

HINT:

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

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 11 to 14 V 

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

3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
   1. Using the Techstream, inspect the CAN communication function to ensure there are no malfunctions in the CAN communication system (See HOW TO PROCEED WITH TROUBLESHOOTING ).

      Result: 

      CAN COMMUNICATION RESULT CHART
      
      

      Result	Proceed to
      No DTCs output	A
      DTCs output	B

   B: Go TO CAN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

   A: Go to Next Step 

4. PROBLEM SYMPTOMS TABLE 
   1. Refer to the PROBLEM SYMPTOMS TABLE  .

      Result: 

      CAN COMMUNICATION RESULT CHART
      
      

      Result	Proceed to
      Fault is not listed in problem symptoms table	A
      Fault is listed in problem symptoms table	B

   B:  Go to step  6

   A: Go to Next Step 

5. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. see TERMINALS OF ECU 
   2. see DATA LIST / ACTIVE TEST 
6. REPAIR OR REPLACE 

   END