How To Proceed With Troubleshooting

HINT: 

• Use the following procedure to troubleshoot the lighting system.
• *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK 

   NEXT: Go to next step 

3. INSPECT AUXILIARY BATTERY VOLTAGE 
   1. Measure the auxiliary battery voltage with the power switch off.

      Standard Voltage

      11 to 14 V

      If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

      NEXT: Go to next step 

4. INSPECT CAN COMMUNICATION SYSTEM* 
   1. Use the Techstream to check if the CAN communication system is functioning normally.

      Result

      Result	Proceed to
      CAN communication system DTC is not output.	A
      CAN communication system DTC is output.	B

      B → GO TO CAN COMMUNICATION SYSTEM 

      A: Go to next step 

5. CHECK FOR DTC* 
   1. Check for DTCs. Refer to DTC CHECK / CLEAR .

      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 
   1. Refer to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .

      Result

      Result	Proceed to
      Fault is not listed in Problem Symptoms Table.	A
      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. Refer to DATA LIST / ACTIVE TEST 
   2. Terminals of ECU. Refer to TERMINALS OF ECU 

      NEXT: Go to next step 

8. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

9. CONFIRMATION TEST 

   NEXT → END