How To Proceed With Troubleshooting

HINT: 

• Use these procedures to troubleshoot the smart key system.
• *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. INSPECT BATTERY VOLTAGE 

   Standard voltage

   11 to 14 V

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

   NEXT: Go to next step 

3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
   1. Use the Techstream to check if the CAN communication system is functioning normally.
      RESULT:
      
      

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

      B → Go to  CAN COMMUNICATION SYSTEM  Refer to  DIAGNOSTIC TROUBLE CODE CHART 

      A: Go to next step 

4. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION* 
   1. Use the Techstream to check if the LIN communication system is functioning normally.
      RESULT:
      
      

      Result	Proceed to
      LIN DTC is not output	A
      LIN DTC is output (2AR-FE)	B
      LIN DTC is output (2GR-FE)	C

      B → DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART 

      C → DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART 

      A: Go to next step 

5. PROBLEM SYMPTOMS TABLE 
   RESULT:
   
   

   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. Operation check. Refer to OPERATION CHECK 
   2. Data List / Active Test. Refer to DATA LIST / ACTIVE TEST 
   3. Terminals of ECU. Refer to TERMINALS OF ECU 

      NEXT: Go to next step 

7. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

8. CONFIRMATION TEST 

   NEXT → END