How To Proceed With Troubleshooting

HINT:

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

1. VEHICLE BROUGHT TO WORKSHOP 
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 

      DTC RESULT TABLE
      
      

      Result	Proceed to
      DTC does not recur	A
      DTC recurs	B

   B: GO TO DTC TABLE 

   A: GO TO NEXT STEP 

3. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. See TERMINALS OF ECU  .
4. ADJUST, REPAIR OR REPLACE 
5. CONFIRMATION TEST 

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