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Home >> Infiniti >> 2015 >> QX80 Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio, Visual & Navigation System (BOSE Audio With Navigation) (Diagnostic Trouble Codes (DTCS) U1207-B272C, Symptom Tests And R & I) >> DTC/Circuit Diagnosis >> DTC B2721: Center Sensor [RL] >> Short-Bat >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK REAR CENTER SENSOR LH SIGNAL CIRCUIT (SHORT CIRCUIT TO POWER SUPPLY) 1

    1. Turn ignition switch OFF.
    2. Disconnect sonar control unit connector and rear center sensor LH connector.
    3. Turn ignition switch ON.
    4. Check voltage between sonar control unit connector and ground.
      Sonar control unit Ground Voltage
      (Approx.)
      Connector Terminal
      M47 7 0 V

    Is the check result normal?

    YES 

    GO TO STEP 2. 

    NO 

    Repair the harnesses or connectors (short circuit to power supply harness).

  2. CHECK REAR CENTER SENSOR LH SIGNAL CIRCUIT (SHORT CIRCUIT TO POWER SUPPLY) 2

    Check continuity between sonar control unit connector and rear center sensor LH connector.

    Rear center sensor LH Ground Continuity
    Connector Terminal
    B263 1 Not existed

    Is the check result normal?

    YES 

    Replace rear center sensor LH. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair the harnesses or connectors (short circuit to power supply harness).