AUDIO AND VISUAL SYSTEM (for Radio and Display Type), Diagnostic DTC:B1324

DTC Code DTC Name
B1324 Lost Communication with Meter

DESCRIPTION

This DTC is stored when a communication error occurs between the radio and display receiver assembly and combination meter assembly.

DTC No. DTC Detection Condition Trouble Area
B1324 After the radio and display receiver assembly receives a registration information signal, which is sent by the combination meter assembly when the ignition switch is turned to ACC, 1 or more times, the radio and display receiver assembly does not receive the signal for 30 seconds or more.

  • Combination meter assembly

  • Radio and display receiver assembly

  • Harness or connector

WIRING DIAGRAM

A01EU99E09

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY)


    1. Disconnect the I185 radio and display receiver assembly connector.

    2. Disconnect the I18 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I185-3 (CNH1) - I18-18 (MSCH) Always Below 1 Ω
      I185-4 (CNL1) - I18-19 (MSCL) Always Below 1 Ω
      I185-3 (CNH1) - Body ground Always 10 kΩ or higher
      I185-4 (CNL1) - Body ground Always 10 kΩ or higher
      I185-3 (CNH1) - I185-4 (CNL1) Always 10 kΩ or higher

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      I185-3 (CNH1) - Body ground Always Below 1 V
      I185-4 (CNL1) - Body ground Always Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT COMBINATION METER ASSEMBLY


    1. Remove the combination meter assembly Click here.

    2. A01EXG7E01
      Text in Illustration
      *a

      Component without harness connected

      (Combination Meter Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      18 (MSCH) - 19 (MSCL) Always 108 to 132 Ω

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  3. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Remove the radio and display receiver assembly Click here.

    2. A01EXG7E02
      Text in Illustration
      *a

      Component without harness connected

      (Radio and Display Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (CNH1) - 4 (CNL1) Always 108 to 132 Ω

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  4. REPLACE COMBINATION METER ASSEMBLY


    1. Replace the combination meter assembly with a new or known good one Click here.

    2. Clear the DTCs Click here.

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

      OK
      No DTCs are output.

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  5. CHECK METER / GAUGE SYSTEM


    1. Turn the ignition switch to ON and wait 30 seconds.

    2. Operate the steering pad switch assembly and check that the audio tab is displayed on the multi-information display in the combination meter assembly and the audio system can be operated normally.

      OK
      Audio system returns to normal.

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

    END