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 
   • 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.

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 

   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 

   Result 

   RESULT REFERENCE
   
   

   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 (see TERMINALS OF ECU  )
   2. DATA LIST / ACTIVE TEST (see DATA LIST / ACTIVE TEST  )
6. ADJUST, REPAIR OR REPLACE 
7. CONFIRMATION TEST 

   NEXT: END