AUDIO AND VISUAL SYSTEM, 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 receiver assembly and combination meter assembly.

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

  • Combination meter assembly

  • Radio receiver assembly

  • Harness or connector

WIRING DIAGRAM

A01W3ZUE89
*a Combination Meter Assembly
*b Radio Receiver Assembly
*c Local Bus Communication Line

PROCEDURE


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


    1. Disconnect the H180 radio receiver assembly connector.

    2. Disconnect the H13 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H180-3 (CNH1) - H13-10 (TX+) Always Below 1 Ω
      H180-4 (CNL1) - H13-9 (TX-) Always Below 1 Ω
      H180-3 (CNH1) - Body ground Always 10 kΩ or higher
      H180-4 (CNL1) - Body ground Always 10 kΩ or higher
      H180-3 (CNH1) - H180-4 (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
      H180-3 (CNH1) - Body ground Always Below 1 V
      H180-4 (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. A01W55YC05
      *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
      10 (TX+) - 9 (TX-) Always 108 to 132 Ω

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  3. INSPECT RADIO RECEIVER ASSEMBLY


    1. Remove the radio receiver assembly Click here.

    2. A01W26NE02
      Text in Illustration
      *a

      Component without harness connected

      (Radio 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 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 RECEIVER ASSEMBLY Click here

    OK

  5. CHECK METER / GAUGE SYSTEM


    1. Turn the engine switch on (IG) 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.

    OK

    END

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here