How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the smart key system.

  *: Use the intelligent tester.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT 

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 

3. CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)* 
   1. Use the intelligent tester to check if the multiplex communication system (MPX) is functioning normally.

      Result 

      RESULT REFERENCE
      
      

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

   B : Go to MULTIPLEX COMMUNICATION SYSTEM 

   A : Go to next step 

4. PROBLEM SYMPTOMS TABLE 
   1. Refer to the PROBLEM SYMPTOMS TABLE  .

      Result: 

      PROBLEM SYMPTOMS TABLE
      
      

      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. ON-VEHICLE INSPECTION 
   2. DATA LIST / ACTIVE TEST 
   3. TERMINALS OF ECU 

   NEXT 

6. REPAIR OR REPLACE 

   NEXT: END