How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the climate control seat 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. INSPECT ELECTRIC POWER CONTROL SYSTEM* 
   1. Using the Techstream, check if the electric power control system is functioning normally.

      Result 

      RESULT CHART
      
      

      Result	Proceed to
      DTC B22B3 is not output	A
      DTC B22B3 is output	B

   2. Using the Techstream, check the electric power control system's load control history (see OPERATION CHECK ).

      B: Go to ELECTRIC POWER CONTROL SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

      A: Go to next step 

4. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* 
   1. Using the Techstream to check if the LIN communication system is functioning normally.

      Result 

      RESULT CHART
      
      

      Result	Proceed to
      LIN DTC is not output	A
      LIN DTC is output	B

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

      A: Go to next step 

5. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
   1. Use the Techstream to check if the CAN communication system is functioning normally.

      Result 

      RESULT CHART
      
      

      Result	Proceed to
      CAN DTC is not output	A
      CAN DTC is output	B

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

      A: Go to next step 

6. CHECK FOR DTC* 
   1. Check for DTCs (see DTC CHECK/CLEAR  ).
   2. Clear the DTCs (see DTC CHECK/CLEAR  ).
   3. Recheck for DTCs (see DTC CHECK/CLEAR  ).

      Result 

      RESULT CHART
      
      

      Result	Proceed to
      DTC does not reoccur	A
      DTC reoccurs	B

      B:  Go to step  8

      A: Go to next step 

7. PROBLEM SYMPTOMS TABLE 

   Result 

   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 8 

   A: Go to next step 

8. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Data List/Active Test (see DATA LIST/ACTIVE TEST  ).
   2. Terminals of ECU (see TERMINALS OF ECU  ).
   3. Operation Check (see OPERATION CHECK  ).
9. REPAIR OR REPLACE 
10. CONFIRMATION TEST 

    NEXT: END