How To Proceed With Troubleshooting

HINT: 

• Use this procedure to troubleshoot the multiplex communication system.
• The Techstream should be used in step 2.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. DTC CHECK 
   1. Check for DTCs and note any codes that are output. Refer to DTC CHECK / CLEAR .
   2. Delete the DTC.
   3. Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests.
      1. If the DTC does not reoccur, proceed to A.
      2. If the DTC reoccurs, proceed to B.

      B → Go to DTC chart  (Refer to DIAGNOSTIC TROUBLE CODE CHART )

      A: Go to next step 

3. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. System diagram. Refer to SYSTEM DIAGRAM 
   2. Terminals of ECU. Refer to TERMINALS OF ECU 

      NEXT: Go to next step 

4. ADJUST, REPAIR OR REPLACE 

   NEXT: Go to next step 

5. CONFIRMATION TEST 

   NEXT → END