NAVIGATION 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 sub-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 sub-assembly when the power switch is turned on (ACC), 1 or more times, the radio and display receiver assembly does not receive the signal for 30 seconds or more.

  • Combination meter sub-assembly

  • Radio and display receiver assembly

  • Harness or connector

WIRING DIAGRAM

A005BUJE05
*a Combination Meter Sub-assembly
*b Radio and Display Receiver Assembly
*c Local Bus Communication Line

PROCEDURE


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


    1. Disconnect the L169 radio and display receiver assembly connector.

    2. Disconnect the L27 combination meter sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L169-3 (CNH1) - L27-28 (MSCH) Always Below 1 Ω
      L169-4 (CNL1) - L27-29 (MSCL) Always Below 1 Ω
      L27-28 (MSCH) - Body ground Always 10 kΩ or higher
      L27-29 (MSCL) - Body ground Always 10 kΩ or higher
      L27-28 (MSCH) - L27-29 (MSCL) 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
      L27-28 (MSCH) - Body ground Always Below 1 V
      L27-29 (MSCL) - Body ground Always Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT COMBINATION METER SUB-ASSEMBLY


    1. Remove the combination meter sub-assembly Click here.

    2. A005DT6E08
      Text in Illustration
      *a

      Component without harness connected

      (Combination Meter Sub-assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      28 (MSCH) - 29 (MSCL) Always 108 to 132 Ω

    NG

    REPLACE COMBINATION METER SUB-ASSEMBLY Click here

    OK

  3. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


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

    2. A005DHYE02
      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 SUB-ASSEMBLY


    1. Replace the combination meter sub-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 power switch on (IG) and wait 30 seconds.

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

      OK
      Audio system returns to normal.

    OK

    END

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here