DTC Confirmation Procedure

If DTC "U1521" is detected along with DTC "U1000", first diagnose the DTC "U1000". Refer to DTC DESCRIPTION .

1. CHECK DTC PRIORITY
   
   

   If DTC "U1521" is displayed with DTC "U1000", first diagnose the DTC "U1000".

   Is applicable DTC detected?

   YES 

   Perform diagnosis of applicable. Refer to DTC DESCRIPTION .

   NO 

   GO TO STEP 2  .

2. PERFORM DTC CONFIRMATION PROCEDURE
   
   
   1. Start the engine.
   2. Turn the Backup Collision Intervention system ON.
   3. Perform "All DTC Reading" with CONSULT.
   4. Check if the "U1521" is detected as the current malfunction in "Self Diagnostic Result" of "ICC/ADAS".

   Is "U1521" detected as the current malfunction?

   YES 

   Refer to DIAGNOSIS PROCEDURE .

   NO - 1 

   To check malfunction symptom before repair: Refer to INTERMITTENT INCIDENT .

   NO - 2 

   Confirmation after repair: INSPECTION END