How To Proceed With Troubleshooting

1. NEXT: Go to next step. 

Ask the customer about symptoms and confirm malfunctions. Fill out the Customer Problem Analysis check sheet.

1. Pressing PWR switch does not turn on system (see  PROBLEM SYMPTOMS TABLE  ) 
2. Other symptoms (go to step 3) 

1. Check if a DTC is output.

   HINT:

   This system is connected to the multiplex communication system (BEAN). Therefore, check for a malfunction in the multiplex communication system before troubleshooting.

1. DTC is output (proceed to " MULTIPLEX COMMUNICATION SYSTEM  ") 
2. DTC is not output (go to step 4) 

HINT:

• If the system cannot enter the diagnosis mode, inspect each AVC-LAN communication signal and repair or replace problem parts (see AVC-LAN CIRCUIT (RADIO RECEIVER ASSY - STEREO COMPONENT AMPLIFIER ASSY)  to AVC-LAN CIRCUIT (TAPE PLAYER ASSY - RADIO RECEIVER ASSY) ).
• Even if the malfunction symptom is not confirmed, check for diagnostic trouble codes. This is because the system stores past diagnostic trouble codes.

1. A : code is output (go to step 5) 
2. A : code is not output (go to step   6 .) 

Find the output code on the diagnostic trouble code chart.

1. NEXT: Go to step   8 . 

Find the applicable symptom code in the problem symptoms table.

HINT:

If the symptom does not recur and no code is output, perform the symptom reproduction method (see HOW TO PROCEED WITH TROUBLESHOOTING ).

1. There is an applicable symptom code in the table (go to step   8 .) 
2. There is no applicable symptom code in the table (go to step 7) 

1. NEXT: Go to next step. 

Adjust, repair or replace as necessary.

1. NEXT: Go to next step. 

HINT:

After deleting the DTC, recheck for diagnostic trouble codes.

1. NEXT: Go to next step. 

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