How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the power door lock control system.
• The Techstream should be used in steps 3,4 and 5.

1. VEHICLE BROUGHT TO WORKSHOP 
2. CUSTOMER PROBLEM ANALYSIS 
   1. Interview the customer to confirm the trouble (See HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS ).
3. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN) 
   1. Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally

      Result 

      RESULT CHART
      
      

      Result	Proceed to
      MPX DTC is not output	A
      MPX DTC is output	B

   B:  GO TO MULTIPLEX COMMUNICATION SYSTEM

   A: Go to next step 

4. DTC CHECK 
   1. Check for a DTC 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 CHART
      
      

      Result	Proceed to
      DTC does not reoccur	A
      DTC reoccurs	B

   B: Go to STEP  6

   A: Go to next step 

5. PROBLEM SYMPTOMS TABLE 

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   Fault is not listed on problem symptoms table	A
   Fault is listed on problem symptoms table	B

   B: After repair, go to STEP  7

   A: Go to next step 

6. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. Terminals of ECU (See TERMINALS OF ECU )
   2. DATA LIST/ACTIVE TEST (See DATA LIST/ACTIVE TEST )
7. REPAIR OR REPLACE 
8. CONFIRMATION TEST 

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