How To Proceed With Troubleshooting

Troubleshoot in accordance with the procedure.

1. VEHICLE BROUGHT IN 
2. SYMPTOM CHECK 
3. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE BODY MULTIPLEX COMMUNICATION SYSTEM (BEAN) 
   1. Check that there is no abnormality in the communication system by inspecting the communication function of the body multiplex communication system.
      1. (ECU communication stop, communication line abnormal) With code outputs, proceed to "A".
      2. (ECU communication stop, communication line abnormal) Without code outputs, proceed to "B".

   B: GO TO INFORMATION OF EACH SYSTEM 

   A: Go to next step. 

4. DIAGNOSTIC TROUBLE CODE CHECK (See  PRE-CHECK   ) 
   1. Check a DTC and note it if a code is output.
   2. Delete the DTC.
   3. Check if the DTC will be output once again, when the problem symptom is simulated based on the noted code.
      1. When no code is output (symptom check and simulation is possible), proceed to "A".
      2. When no code is output (symptom check and simulation is impossible), proceed to "B".
      3. When a code is output, proceed to "C".

   B: GO TO PROBLEM SIMULATION (See  PROBLEM SYMPTOMS TABLE   ) 

   C: Go to step   7 

   A: Go to next step. 

5. PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE   ) 
   1. Without applicable symptoms, proceed to "A".
   2. With applicable symptoms, proceed to "B".

   B: Go to step   7 

   A: Go to next step. 

6. PERFORM TROUBLESHOOTING IN FOLLOWING METHOD, DEPENDING ON MALFUNCTION SYMPTOM 
   1. Pre-check (See PRE-CHECK  )
   2. Terminals of ECU (See TERMINALS OF ECU  )
7. ADJUSTMENT, REPAIR OR REPLACEMENT 

   END