How To Proceed With Troubleshooting

HINT: 

• Use these procedures to troubleshoot the multiplex communication 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. CHECK DIAGNOSTIC TROUBLE CODE* 
   1. Check for DTCs and note any codes that are output.
   2. Delete the DTC.
   3. Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests.
      RESULT
      
      

      Result	Proceed to
      DTC does not reoccur	A
      DTC reoccurs	B

      B → Go to step   4 

      A: Go to next step 

4. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. Terminals of ECU
5. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

6. CONFIRMATION TEST 

   NEXT → END