How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the window defogger system.
• *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 

   11 to 14 V 

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

3. CHECK LIN COMMUNICATION SYSTEM 
   1. Check if the LIN communication system is functioning normally (see HOW TO PROCEED WITH TROUBLESHOOTING ).

      Result 

      LIN COMMUNICATION SYSTEM RESULT REFERENCE CHART
      
      

      Result	Proceed to
      LIN communication system is normal	A
      LIN communication system is not normal	B

   B: Go to LIN 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 

      PROBLEM SYMPTOMS RESULT REFERENCE 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 
   3. See OPERATION CHECK 
6. REPAIR OR REPLACE 
7. CONFIRMATION TEST 

   NEXT: END