How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the defogger system.
• *: Use the Techstream.
  1. VEHICLE BROUGHT TO WORKSHOP 
  2. INSPECT BATTERY VOLTAGE 

     Standard voltage: 

     11 to 14 V 

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

  3. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)* 
     1. Use the Techstream to check that 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. PROBLEM SYMPTOMS TABLE 

     Result 

     RESULT CHART
     
     

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

  B :  Go to step  4

  A : Go to Next Step 

• 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  )
  4. Inspection (see ON-VEHICLE INSPECTION  )
• REPAIR OR REPLACE 
• CONFIRMATION TEST 

  NEXT : END