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. CHECK 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  HOW TO PROCEED WITH TROUBLESHOOTING 

      A: Go to next step 

4. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* 
   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	B

      B → GO TO LIN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 

      A: Go to next step 

5. CHECK FOR DTC* 
   1. Check for DTCs. Based on the DTCs output, try to cause the same steering lock system DTC, engine immobilizer system DTC or smart key system (for Entry Function) DTC to be stored by reproducing the symptoms indicated by the DTC.
      RESULT
      
      

      Result	Proceed to
      DTC is not output	A
      Steering lock system DTC is output	B
      Engine immobilizer system DTC is output	C
      Smart key system (for Entry Function) DTC is output	D

      B → GO TO STEERING LOCK SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 

      C → GO TO ENGINE IMMOBILISER SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 

      D → GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART  

      A: Go to next step 

6. PROBLEM SYMPTOMS TABLE 
   1. Refer to the Problem Symptoms Table. Refer to 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 8 

      A: Go to next step 

7. 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 

8. REPAIR OR REPLACEMENT 

   NEXT: Go to next step 

9. CONFIRMATION TEST 

   NEXT → END