How To Proceed With Troubleshooting

HINT:

• Use this procedure to troubleshoot the key reminder warning system.
• *: Use the intelligent tester.
  1. VEHICLE BROUGHT TO WORKSHOP 
     • 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.

     • GO TO NEXT STEP 
  3. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)* 
     1. Using the intelligent tester, check if the Multiplex Communication System (MPX) is functioning normally.

        Result 

        COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)
        
        

        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 

     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. TERMINALS OF ECU 
     2. DATA LIST/ACTIVE TEST 
     • GO TO NEXT STEP 
  6. ADJUST, REPAIR OR REPLACE 
     • GO TO NEXT STEP 
  7. CONFIRMATION TEST 
     • END