How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the power door lock control system.
• The intelligent tester should be used in steps 3, 4 and 6.

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard Voltage: 

   11 to 14 V 

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

3. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN) 
   1. Use the intelligent tester 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. CHECK FOR DTC 
   1. Check for DTC and note any codes that are output.
   2. Delete DTC.
   3. Recheck DTC.

      Result 

      RESULT CHART
      
      

      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 CHART
   
   

   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

      (See TERMINALS OF ECU )

   2. DATA LIST/ACTIVE TEST

      (See DATA LIST / ACTIVE TEST )

   3. On-vehicle inspection

      (See ON-VEHICLE INSPECTION )

7. REPAIR OR REPLACE 
8. CONFIRMATION TEST 

   NEXT: END