How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the LIN communication system
• *. Use the Intelligent tester or 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 Intelligent tester or Techstream, inspect the CAN communication function to ensure there are no malfunctions in the communication system (See CAN COMMUNICATION SYSTEM ).

   Result: 

   RESULT REFERENCE
   
   

   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. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* 
   1. Using the Intelligent tester or 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 (see 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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