How To Proceed With Troubleshooting

HINT: 

• Use these procedures to troubleshoot the electric power control system.
• *: Use the Techstream.

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.

   NEXT: Go to next step 

3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
   1. Using the Techstream, check if the CAN communication system is functioning normally.
      RESULT
      
      

      Result	Proceed to
      CAN DTC is not output	A
      CAN DTC is output	B

      B → Go to CAN COMMUNICATION SYSTEM 

      A: Go to next step 

4. CHECK DATA LIST/ACTIVE TEST* 
   1. Check the Data List's load control history (number of items) and the final load control history*. Then write down the information.

      HINT: 

      Refer to the following description for information about "final load control history".

      NEXT: Go to next step 

5. CHECK FOR DTC* 
   1. Check for DTCs and write them down.
   2. Delete the DTC.
   3. Check for DTC again.
      RESULT
      
      

      Result	Proceed to
      No DTCs, symptom confirmation and symptom simulation can be performed	A
      No DTCs, symptom confirmation and symptom simulation cannot be performed	B
      DTC output	C

      B → Go to INTRODUCTION. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 

      C → Go to step   8 

      A: Go to next step 

6. 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. Refer to DATA LIST/ACTIVE TEST 
   2. 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