How To Proceed With Troubleshooting

HINT:

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

1. VEHICLE BROUGHT TO WORKSHOP 
   1. NEXT: Go to next step 
2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK (See  CUSTOMER PROBLEM ANALYSIS CHECK   ) 
   1. NEXT: Go to next step 
3. CHECK COMMUNICATION FUNCTION OF LARGE-SCALE BODY MULTIPLEX COMMUNICATION SYSTEM (BEAN) 
   1. Use the hand-held tester to check for normal function of the multiplex communication system.
      1. (ECU not connected, communication line malfunctioning) Without code outputs, proceed to A.
      2. (ECU not connected, communication line malfunctioning) With code outputs, proceed to B.
   1. B: Go to  MULTIPLEX COMMUNICATION SYSTEM - DIAGNOSTICS 
   2. A: Go to next step. 
4. CHECK DTC (See  DIAGNOSTIC TROUBLE CODE TABLE   ) 
   1. Check for DTC 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 suggests.
      1. If the DTC does not reoccur, proceed to A.
      2. If the DTC reoccurs, proceed to B.
   1. B: Go to step   7 
   2. A: Go to next step. 
5. See  PROBLEM SYMPTOMS TABLE  
   1. If the fault is not listed on the problem symptoms table, proceed to A.
   2. If the fault is listed on the problem symptoms table, proceed to B.
   1. B: Go to step   7 
   2. A: Go to next step. 
6. OVERALL ANALYSIS AND TROUBLESHOOTING 
   1. See DATA LIST/ACTIVE TEST 
      1. Inspection with the hand-held tester (DATA LIST)
      2. Inspection with the hand-held tester (ACTIVE TEST)
   2. See TERMINALS OF ECU 
   3. See ON-VEHICLE INSPECTION 
   4. See INSPECTION  )
   1. NEXT: Go to next step. 
7. ADJUST, REPAIR OR REPLACEMENT 
   1. NEXT: Go to next step. 
8. CONFIRMATION TEST 
   1. NEXT: END