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Home >> Infiniti >> 2015 >> Q50 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio, Visual & Navigation System (INFINITI INTOUCH) (Diagnostic Trouble Codes (DTCS) & Symptom Tests (Exc Hybrid) >> DTC/Circuit Diagnosis >> DTC U1603, U160B: Front Door Tweeter >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FRONT DOOR TWEETER CIRCUIT FOR OPEN

    1. Turn ignition switch OFF.
    2. Disconnect BOSE amp. harness connector and front door tweeter LH or RH harness connector.
    3. Check the continuity between BOSE amp. harness connector and front door tweeter LH or RH harness connector.
      FRONT DOOR TWEETER LH

      BOSE amp. Front door tweeter LH Continuity
      Connector Terminal Connector Terminal
      B54 24 D50 1 Existed
      35 2
      FRONT DOOR TWEETER RH

      BOSE amp. Front door tweeter RH Continuity
      Connector Terminal Connector Terminal
      B54 19 D52 1 Existed
      32 2

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair or replace malfunctioning parts.

  2. CHECK FRONT DOOR TWEETER CIRCUIT FOR SHORT TO GROUND

    Check the continuity between front door tweeter LH or RH harness connector and ground.

    FRONT DOOR TWEETER LH

    Terminals Continuity
    (+) (-)
    Front door tweeter LH
    Connector Terminal
    D50 1 Ground Existed
    2
    FRONT DOOR TWEETER RH

    Terminals Continuity
    (+) (-)
    Front door tweeter RH
    Connector Terminal
    D52 1 Ground Existed
    2

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace malfunctioning parts.

  3. CHECK FRONT DOOR TWEETER CIRCUIT FOR SHORT TO POWER SUPPLY

    1. Turn ignition switch ON.
    2. Check the voltage between front door tweeter LH or RH harness connector and ground.
    FRONT DOOR TWEETER LH

    Terminals Voltage
    (Approx.)
    (+) (-)
    Front door tweeter LH
    Connector Terminal
    D50 1 Ground 0 V
    2
    FRONT DOOR TWEETER RH

    Terminals Voltage
    (Approx.)
    (+) (-)
    Front door tweeter RH
    Connector Terminal
    D52 1 Ground 0 V
    2

    Is the inspection result normal?

    YES 

    Replace front door tweeter LH or RH. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace malfunctioning parts.