How To Proceed With Troubleshooting

HINT: 

• The wireless door lock control system troubleshooting procedure is based on the premise that the power door lock control system is operating normally. Check the power door lock control system first before troubleshooting the wireless door lock control system. Use this procedure to troubleshoot the wireless door lock control system.
• *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. CUSTOMER PROBLEM ANALYSIS 

   HINT: 

   • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
   • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
   • The following 5 items are important points in the problem analysis:

   What	Vehicle model, system name
   When	Date, time, occurrence frequency
   Where	Road conditions
   Under what conditions?	Running conditions, driving conditions, weather conditions
   How did it happen?	Problem symptoms

   NEXT: Go to next step 

3. INSPECT AUXILIARY BATTERY VOLTAGE 

   Standard Voltage

   11 to 14 V

   If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

   NEXT: Go to next step 

4. CHECK FOR DTC* 
   1. Check for DTCs and note any codes that are output. Refer to DTC CHECK/CLEAR .
   2. Clear the DTCs.
   3. Recheck for DTCs. Based on the DTCs output above, try to force output of the same CAN communication system DTC or wireless door lock control system DTC by simulating the symptoms indicated by the DTC.

      Result

      Result	Proceed to
      DTC is not output.	A
      CAN communication system DTC is output.	B
      Wireless door lock control system DTC is output.	C

      B → GO TO CAN COMMUNICATION SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART 

      C → GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART  

      A: Go to next step 

5. PROBLEM SYMPTOMS TABLE 
   1. Refer to PROBLEM SYMPTOMS TABLE .

      Result

      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. Refer to OPERATION CHECK 
   2. Refer to TERMINALS OF ECU 
   3. Refer to DATA LIST/ACTIVE TEST 

      NEXT: Go to next step 

7. REPAIR OR REPLACE 

   NEXT: Go to next step 

8. CONFIRMATION TEST 

   NEXT → END