How To Proceed With Troubleshooting

HINT:

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

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT 

2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK 

   NEXT 

3. INSPECT BATTERY VOLTAGE 

   Standard: 11 to 14 V 

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

   NEXT 

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

      Result 

      DTC OUTPUT RESULT
      
      

      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 OUTPUT RESULT
   
   

   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 

   PROBLEM SYMPTOMS RESULT
   
   

   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. DATA LIST / ACTIVE TEST 
   2. TERMINALS OF ECU 
   3. Inspection

   NEXT: GO TO NEXT STEP 

8. ADJUST, REPAIR OR REPLACE 

   NEXT: GO TO NEXT STEP 

9. CONFIRMATION TEST 

   NEXT: END