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 6.

1. VEHICLE BROUGHT TO WORKSHOP 

   NEXT: Go to next step 

2. INSPECT BATTERY VOLTAGE 

   Standard Voltage

   11 to 14 V

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

   NEXT: Go to next step 

3. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN) 
   1. Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally.

      Result

      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 DTC and note any codes that are output.
   2. Delete DTC.
   3. Recheck DTC.

      Result

      Result	Proceed to
      DTC does not reoccur	A
      DTC reoccurs	B

      B → Go to DIAGNOSTIC TROUBLE CODE CHART 

      A: Go to next step 

5. PROBLEM SYMPTOMS TABLE 

   Result

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

   B → Go to step 8 

   A: Go to next step 

6. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. Terminals of ECU

      Refer to TERMINALS OF ECU 

   2. DATA LIST/ACTIVE TEST

      Refer to DATA LIST / ACTIVE TEST 

   3. On-vehicle inspection

      Refer to ON-VEHICLE INSPECTION

      NEXT: Go to next step 

7. REPAIR OR REPLACE 

   NEXT: Go to next step 

8. CONFIRMATION TEST 

   NEXT → END