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Home >> Infiniti >> 2015 >> Q50 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Driver Assistance System (ADAS Control Unit- Diagnostic Trouble Codes (DTCS) And Component R&R) (Exc Hybrid) >> DTC/Circuit Diagnosis >> DTC U1521: Sonar Can 2 >> Diagnosis Procedure

Diagnosis Procedure

  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 LOGIC .

    NO 

    GO TO STEP 2  .

  2. CHECK SELF-DIAGNOSIS RESULTS

    Check if any DTC is detected in "Self Diagnostic Result" of "".

    Is any DTC detected?

    YES 

    Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to DTC INDEX .

    NO 

    Replace the ADAS control unit. Refer to REMOVAL AND INSTALLATION .

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