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. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
   1. Using the Techstream, inspect the CAN communication function to ensure there are no malfunctions in the communication system (See DTC CHECK/CLEAR  ).

      Result 

   RESULT REFERENCE
   
   

   Result	Proceed To
   No DTCs output	A
   DTCs output	B

   B: Go to Can Communication System  (See CAN COMMUNICATION SYSTEM  )

   A: Go to Next Step 

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

      Result 

   RESULT REFERENCE
   
   

   Result	Proceed To
   No DTCs output	A
   DTCs output	B

   B: Go to Diagnostic Trouble Code Chart  (See DIAGNOSTIC TROUBLE CODE CHART  )

   A: Go to Next Step 

5. PROBLEM SYMPTOMS TABLE 
   1. Refer to the PROBLEM SYMPTOMS TABLE  ).

      Result 

   RESULT REFERENCE
   
   

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

   B:  Go to step  7

   A: Go to Next Step 

6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Data List/Active Test (See DATA LIST/ACTIVE TEST  )
   2. Terminals of ECU (See TERMINALS OF ECU  )
7. ADJUST, REPAIR OR REPLACE 

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