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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 2018 (Audio, Visual, Navigation & Telephone System) >> Navigation System >> Guide Sound is Not Heard
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Guide Sound is Not Heard

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK VOICE GUIDE SETTING 

    While driving in the dark pink route, voice guide does not operate. (note)

    NOTE: Voice guide is only available at intersections that satisfy certain conditions (indicated by • on the map). Therefore, guidance may not be given even when the route on the map changes direction.

    Is volume setting switched OFF? 

    YES: Switch the setting ON and turn the volume up.

    NO: GO TO 2.

  2. CHECK HARNESS 
    1. Turn ignition switch OFF.
    2. Disconnect NAVI control unit connector B151 and audio unit connector M45.
    3. Check continuity between NAVI control unit and audio unit.
      TERMINAL CONTINUITY CHART

      Terminals Continuity
      B A
      Connector Terminal Connector Terminal
      NAVI control unit: B151 12 Audio unit: M45 71 Yes
      14 69
    4. Check continuity between NAVI control unit and ground.
      TERMINAL CONTINUITY CHART

      Terminals Continuity
      B -
      Connector Terminal (Wire color)
      NAVI control unit: B151 12 Ground No
      14

    OK or NG 

    OK: GO TO 3.

    NG: Repair harness.

    Fig 1: Checking Continuity Between NAVI Control Unit And Audio Unit
    G04904321
  3. CHECK VOICE GUIDE 
    1. Connect NAVI control unit connector and audio unit connector.
    2. Turn ignition switch ON.
    3. Check signal between NAVI control unit harness connector B151 terminal 12 and 14 with CONSULT-ll or oscilloscope.

      12 - 14 : Refer to  "TERMINALS AND REFERENCE VALUES FOR NAVI CONTROL UNIT ".

    4. Fig 2: Checking Signal Between NAVI Control Unit Connector B151 Terminal 12 And 14
      G04904322

    OK or NG 

    OK: Replace audio unit. Refer to "AUDIO UNIT - WITH NAVI ".

    NG: Replace NAVI control unit. Refer to "NAVI CONTROL UNIT ".