How To Proceed With Troubleshooting

HINT:

• The wireless door lock control system troubleshooting procedures are based on the premise that the power door lock control system and the power window control system are operating normally. Check the power door lock system (see PROBLEM SYMPTOMS TABLE  ) and the power window control system (see TERMINALS OF ECU  ) first before troubleshooting the wireless door lock control system.
• Use this procedure to troubleshoot the wireless door lock control system.
• *: Use the intelligent tester.

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 11 to 14 V 

   If the voltage is below 11V, recharge or replace the battery before proceeding.

3. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)* 
   1. Using the intelligent tester, 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. 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 suggested.

      Result: 

      RESULT CHART
      
      

      Result	Proceed to
      DTC does not reoccur	A
      DTC reoccurs	B

   B: Go to step  7

   A: Go to Next Step 

5. PROBLEM SYMPTOMS TABLE 

   Result: 

   RESULT CHART
   
   

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

   B: Go to step  7

   A: Go to Next Step 

6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. (see OPERATION CHECK  )
   2. (see TERMINALS OF ECU  )
   3. (see DATA LIST / ACTIVE TEST  )
7. ADJUST, REPAIR OR REPLACE 
8. CONFIRMATION TEST 

   NEXT: END