How To Proceed With Troubleshooting

HINT: 

• Use this procedure to troubleshoot the multiplex communication system.
• *: Use the Techstream

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. CHECK FOR DTC* 
   1. Check for DTCs and note any codes that are output. Refer to DTC CHECK / CLEAR .
   2. Clear 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 DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART  

      A: Go to next step 

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

      NEXT: Go to next step 

4. REPAIR OR REPLACE 

   NEXT: Go to next step 

5. CONFIRMATION TEST 

   NEXT → END