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NAVIGATION SYSTEM, Diagnostic DTC:B1574

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DTC Code DTC Name
B1574 GVIF Disconnected (from Park Assist/Monitoring ECU to EMV/MM Integrated Device)
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DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area
B1574 GVIF Disconnected (from Park Assist/Monitoring ECU to EMV/MM Integrated Device) GVIF disconnected (from parking assist ECU to multi-display)

  • Harness or connector (GVIF cable)

  • Multi-display

  • parking assist ECU
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Tip:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

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PROCEDURE


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    CHECK DTC


    1. Clear the DTCs.

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      1. Body Electrical > Navigation System > Clear DTCs


    2. Turn the power switch off.

    3. Recheck for DTCs and check that no DTCs are output.

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      1. Body Electrical > Navigation System > Trouble Codes


      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

  2. Click here

    CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - PARKING ASSIST ECU)


    1. B004XS0C28
      *a

      Front view of wire harness connector

      (to Multi-display)
      *b

      Front view of wire harness connector

      (to Parking Assist ECU)

      Disconnect the G148 multi-display connector.

    2. Disconnect the G142 parking assist ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G142-1 (GVO+) - G148-1 (GVI+) Always Below 1 Ω
      G142-2 (GVO-) - G148-2 (GVI-) Always Below 1 Ω
      G142-3 (GVG1) - G148-3 (GVG1) Always Below 1 Ω
      G142-1 (GVO+) - Body ground Always 10 kΩ or higher
      G142-2 (GVO-) - Body ground Always 10 kΩ or higher
      G142-3 (GVG1) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    CHECK MULTI-DISPLAY


    1. Replace the multi-display with a new or known good one.

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    2. Clear the DTCs.

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      1. Body Electrical > Navigation System > Clear DTCs


    3. Turn the power switch off.

    4. Recheck for DTCs and check that no DTCs are output.

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      1. Body Electrical > Navigation System > Trouble Codes


      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    • OK

      END (MULTI-DISPLAY IS DEFECTIVE)

    • NG

      REPLACE PARKING ASSIST ECUClick here