How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the multiplex communication system.
• The intelligent tester should be used in step 2.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT 

2. CHECK FOR DTC 
   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 DESCRIPTION CHART
      
      

      Result	Proceed to
      DTC does not reoccur	A
      DTC reoccurs	B

   B : Go to step   4 

   A : GO TO NEXT STEP 

3. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. TERMINALS OF ECU 

      NEXT 

4. ADJUST, REPAIR OR REPLACE 

   NEXT 

5. CONFIRMATION TEST 

   NEXT : END