How To Proceed With Troubleshooting

HINT: 

• Use these procedures to troubleshoot the smart access system with push-button start.
• *: 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 LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN) 
   1. Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally.

      Result

      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 

   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 6 

   A: Go to next step 

5. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. On-vehicle inspection. Refer to ON-VEHICLE INSPECTION 
   2. DATA LIST/ACTIVE TEST
   3. Terminals of ECU
   4. Inspection

      NEXT: Go to next step 

6. REPAIR OR REPLACEMENT 

   NEXT: Go to next step 

7. CONFIRMATION TEST 

   NEXT → END