How To Proceed With Troubleshooting

HINT:

• Use this procedure to troubleshoot the smart key system.
• The intelligent tester can be used in steps  3,  4,  5 and  7.
• When troubleshooting the smart key system using the intelligent tester with the engine switch off, connect the intelligent tester to the vehicle and repeat turning any of the courtesy light switches on and off until communication between the tester and the vehicle begins (the interval ON and OFF should be less than 1.5 sec.).

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT 

2. CUSTOMER PROBLEM ANALYSIS 
   1. Confirm problem symptoms.

   NEXT 

3. CHECK MULTIPLEX COMMUNICATION SYSTEM 
   1. Check for DTCs (See DIAGNOSIS SYSTEM ).

      HINT:

      This system uses multiplex communication. Check for DTCs for the multiplex communication system before performing the troubleshooting.

      Result 

      RESULT CHART
      
      

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

   B: GO TO MULTIPLEX COMMUNICATION SYSTEM

   A: Go to next step 

4. CHECK DTC 
   1. Check for DTCs (See DTC CHECK / CLEAR ).
      1. Record the DTCs.
   2. Clear the DTCs.

      HINT:

      After DTCs are all cleared, check if the trouble occurs again 6 seconds after the engine switch is turned on (IG).

   3. Recheck for DTCs.
      1. Simulate the malfunction and check if the DTCs are output again.

         Result 

         RESULT CHART
         
         

         Result	Proceed to
         DTC is output.	A
         DTC is not output.	B
         DTCs are not output, and the malfunction cannot be simulated or checked.	C

   B: Go to step  10

   C: SYMPTOM SIMULATION 

   A: Go to next step 

5. DTC CHART 

   NEXT 

6. CIRCUIT INSPECTION 

   NEXT 

7. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. DATA LIST / ACTIVE TEST (See DATA LIST / ACTIVE TEST )
      1. Inspection with the intelligent tester (DATA LIST / ACTIVE TEST)
   2. Terminal of ECU (See TERMINALS OF ECU )
   3. On-vehicle inspection (See ON-VEHICLE INSPECTION )

   NEXT 

8. ADJUST, REPAIR OR REPLACE 

   NEXT 

9. CONFIRMATION TEST 

   NEXT: END 

10. PROBLEM SYMPTOMS TABLE 

    NEXT 

11. ADJUST, REPAIR OR REPLACE 

    NEXT 

12. CONFIRMATION TEST 

    NEXT: END