AUDIO AND VISUAL SYSTEM, Diagnostic DTC:B15D5

DTC Code DTC Name
B15D5 Rear Seat Entertainment System Disconnected

DESCRIPTION

The radio receiver assembly and multi-display controller sub-assembly are connected by the MOST communication lines.

This DTC is stored when a MOST communication error occurs between the radio receiver assembly and multi-display controller sub-assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15D5 Rear Seat Entertainment System Disconnected A device that is listed in the MOST network connected device record of the master unit is missing.

  • Multi-display controller sub-assembly power source circuit

  • MOST circuit between radio receiver assembly and multi-display controller sub-assembly

  • Multi-display controller sub-assembly

  • Radio receiver assembly

  • Harness or connector

Tech Tips

For the MOST communication line, the radio receiver assembly is the master unit.

WIRING DIAGRAM

B004UOWE01

CAUTION / NOTICE / HINT

Note


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

  • When replacing the radio receiver assembly, always replace it with a new one.

    If a radio receiver assembly which was installed to another vehicle is used, the following may occur:


    • A communication malfunction DTC may be stored.

    • The radio receiver assembly may not operate normally.

Tech Tips

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

Click here

PROCEDURE


  1. 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.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (COMMUNICATION MALFUNCTION DUE TO NOISE)

    NG

  2. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY - BATTERY AND BODY GROUND)


    1. Disconnect the L138 multi-display controller sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L138-14 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L138-1 (+B) - Body ground Power switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY)


    1. Disconnect the G136 radio receiver assembly connector.

    2. Disconnect the L161 multi-display controller sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G136-2 (MI+) - L161-5 (MO+) Always Below 1 Ω
      G136-3 (MI-) - L161-6 (MO-) Always Below 1 Ω
      G136-4 (SLDI) - L161-7 (SLDO) Always Below 1 Ω
      G136-2 (MI+) - Body ground Always 10 kΩ or higher
      G136-3 (MI-) - Body ground Always 10 kΩ or higher
      G136-4 (SLDI) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY


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

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

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

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here