How To Proceed With Troubleshooting

Standard Voltage: 

11 to 14 V 

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

1. Turn the ignition switch to ON.
2. Check whether or not the radio receiver turns on.

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Radio receiver turns on	A
   Radio receiver does not turn on	B

   B: Go to step  7

   A: Go to Next Step 

Result 

B: Go to step  7

A: Go to Next Step 

1. Check for DTCs and note any codes that are output.
2. Clear the DTCs.
3. Recheck for DTCs by simulating the operation indicated by the DTCs.

   HINT:

   • If the system cannot enter diagnostic mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits and repair or replace the malfunctioning part.
   • Even if the symptom malfunction is not confirmed, check the DTCs. This is because the system stores past DTCs.
   • Check and clear past DTCs. Then recheck for DTCs.

     Result 

     RESULT REFERENCE
     
     

     Result	Proceed to
     DTC is output again	A
     DTC is not output	B

     B: Go to step  7

     A: Go to Next Step 

Find the output code in Diagnostic Trouble Code Chart (See DIAGNOSTIC TROUBLE CODE CHART  ).

NEXT: Go to step  9

Refer to PROBLEM SYMPTOMS TABLE  .

Result 

B: Go to step  9

A: Go to Next Step 

1. Terminals of ECU (See TERMINALS OF ECU  ).