How To Proceed With Troubleshooting

HINT: 

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

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. CUSTOMER PROBLEM ANALYSIS CHECK 

   NEXT: Go to next step 

3. INSPECT BATTERY VOLTAGE 

   Standard voltage

   10 to 14 V

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

   NEXT: Go to next step 

4. CHECK FOR DTC* 
   1. Check for DTCs and note any codes that are output.
   2. Delete the DTC.
   3. Check if the DTC will be output once again when the problem symptom is simulated based on the noted code.

      NEXT: Go to next step 

5. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. Terminals of ECU. Refer to TERMINALS OF ECU 

      NEXT: Go to next step 

6. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

7. CONFIRMATION TEST 

   NEXT → END