How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the lighting system.
• *: Use the intelligent tester.

1. VEHICLE BROUGHT TO WORKSHOP 
2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK 
3. INSPECT BATTERY VOLTAGE 

   Standard: 11 to 14 V 

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

4. INSPECT MULTIPLEX COMMUNICATION SYSTEM (BEAN)* 
   1. Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally.

      Result 

      DTC RESULT CHART
      
      

      Result	Proceed to
      MPX DTC Is not output	A
      MPX DTC is output	B

   B: Go to step  8

   A: Go to Next Step 

5. CHECK FOR DTC* 

   Result 

   DTC RESULT CHART
   
   

   Result	Proceed to
   DTC Is not output	A
   DTC Is output	B

   B: Go to step  8

   A: Go to Next Step 

6. PROBLEM SYMPTOMS TABLE 

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   If fault Is not listed In problem symptoms table	A
   If fault is listed in problem symptoms table	B

   B: Go to step  8

   A: Go to Next Step 

7. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. (See DATA LIST / ACTIVE TEST  )
   2. (See TERMINALS OF ECU  )
   3. Inspection
8. ADJUST, REPAIR OR REPLACE 
9. CONFIRMATION TEST 

   NEXT: END