How To Proceed With Troubleshooting

HINT

• Use the following procedure to troubleshoot the power door lock control system
• * Use the Techstream

1. VEHICLE BROUGHT TO WORKSHOP 
2. CUSTOMER PROBLEM ANALYSIS CHECK 

   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 for problem analysis"
   CUSTOMER 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

3. INSPECT BATTERY VOLTAGE 
   1. Measure the battery voltage

      Standard Voltage: 

      11 to 14 V 

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

4. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)* 
   1. Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally (See DIAGNOSTIC TROUBLE CODE CHART )

      Result 

      RESULT
      
      

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

   A: Go to DIAGNOSTIC TROUBLE CODE CHART  (See DIAGNOSTIC TROUBLE CODE CHART )

   B: Go to next step 

5. CHECK FOR DTC * 
   1. Check for DTC s and note any codes that are output (See DTC CHECK / CLEAR  )
   2. Clear the DTC s
   3. Recheck for DTC s

      Result 

      RESULT
      
      

      Result	Proceed to
      DTC reoccurs	A
      DTC does not reoccur	B

   A: Go to DIAGNOSTIC TROUBLE CODE CHART (See )

   B: Go to next step 

6. PROBLEM SYMPTOMS TABLE 
   1. Refer to PROBLEM SYMPTOMS TABLE  .

      Result 

      RESULT
      
      

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

   A: Go to step  8

   B: Go to next step 

7. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. Terminals of ECU (See TERMINALS OF ECU  )
   2. Data List/Active Test (See DATA LIST / ACTIVE TEST  )
   3. Operation Check (See OPERATION CHECK  )
8. REPAIR OR REPLACE 
9. CONFIRMATION TEST 

   NEXT: END