How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the key reminder warning system.
• The intelligent tester should be used in steps 3 and 5.

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 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 

   A : GO TO NEXT STEP 

4. PROBLEM SYMPTOMS TABLE 

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Fault is not listed on problem symptoms table	A
   Fault is listed on problem symptoms table	B

   B : After repair, go to step   7 

   A : GO TO NEXT STEP 

5. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. Terminals of ECU

      TERMINALS OF ECU 

   2. DATA LIST / ACTIVE TEST

      DATA LIST / ACTIVE TEST 

6. REPAIR OR REPLACE 
7. CONFIRMATION TEST 

   NEXT : END