NAVIGATION SYSTEM(for Sedan), Diagnostic DTC:B158F

DTC Code DTC Name
B158F AV Signal Stoppage (Low Battery Voltage)

DESCRIPTION

This DTC is stored when a video or audio signal is interrupted due to battery voltage input to the radio and display receiver assembly dropping temporarily.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B158F

AV Signal Stoppage (Low Battery Voltage)

A video or audio signal is interrupted when the battery voltage drops

  • Radio and display receiver assembly

  • Harness or connector

  • Stop and start system*1

  • *1: w/ Stop and Start System

WIRING DIAGRAM

E277818E01

CAUTION / NOTICE / HINT

Note:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

  1. CHECK VEHICLE SIGNAL (OPERATION CHECK)

    1. E268487

      Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check.

      Click here

    2. Measure the battery voltage.

      Standard Voltage

      11 to 14 V (w/o Stop and Start System)

      9.5 to 14 V (w/ Stop and Start System)

      Tip:

      This display is updated once per second.

    Result

    Proceed to

    OK

    NG
    NG

    CONFIRM MODELClick here

    OK

  2. CHECK DTC

    1. Clear the DTCs.

      Click here

      Body Electrical > Navigation System > Clear DTCs

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

      Body Electrical > Navigation System > Trouble Codes

      OK

      No DTCs are output.

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    Click here

  3. CONFIRM MODEL

    1. Choose the model to be inspected.

      Result

      Result

      Proceed to

      w/o Stop and Start System

      A

      w/ Stop and Start System

      B
    B

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - ENGINE STOP AND START ECU)Click here

    A

  4. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY POWER SOURCE)

    1. Disconnect the E1 radio and display receiver assembly connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      E1-4 (+B1) - Body ground

      Always

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - ENGINE STOP AND START ECU)

    1. Disconnect the E1 radio and display receiver assembly connector.

    2. Disconnect the E24 engine stop and start ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      E1-4 (+B1) - E24-2 (BO1)

      Always

      Below 1 Ω

      E1-4 (+B1) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY POWER SOURCE)

    1. Disconnect the E1 radio and display receiver assembly connector.

    2. Reconnect the E24 engine stop and start ECU connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      E1-4 (+B1) - Body ground

      Always

      9.5 to 14 V

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    Click here

    NG

    GO TO STOP AND START SYSTEM

    Click here