How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the smart access system with push-button start.
• *: Use Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 

   11 to 14 V 

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

3. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)* 
   1. Use Techstream to check if the Multiplex Communication System (MPX) is functioning normally.

      Result 

      RESULT REFERENCE CHART
      
      

      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. CHECK FOR DTC* 
   1. Check for DTC and note any codes that are output.
   2. Delete DTC.
   3. Recheck DTC.

      Result 

      RESULT REFERENCE CHART
      
      

      Result	Proceed to
      DTC does not reoccur	A
      DTC reoccurs	B

   B:  GO TO DIAGNOSTIC TROUBLE CODE CHART 

   A: Go to Next Step 

5. PROBLEM SYMPTOMS TABLE 

   Result 

   RESULT REFERENCE 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  7

   A: Go to Next Step 

6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Terminals of ECU (See TERMINALS OF ECU  )
   2. DATA LIST/ACTIVE TEST (See DATA LIST / ACTIVE TEST  )
7. REPAIR OR REPLACE 
8. CONFIRMATION TEST 

   NEXT: END