AUDIO AND VISUAL SYSTEM, Diagnostic DTC:B1322

DTC Code DTC Name
B1322 Lost Communication with Display

DESCRIPTION

This DTC is stored when data cannot be received from the accessory meter assembly.

DTC Code DTC Detection Condition Trouble Area
B1322 The multi-media module receiver assembly cannot receive data from the accessory meter assembly.

  • Power source or inside of accessory meter assembly

  • Accessory meter assembly CAN branch wire or connector

  • Remote touch (remote operation board) CAN branch wire or connector

  • Accessory meter assembly

  • Remote touch (remote operation board)

  • Harness or connector

WIRING DIAGRAM

A000ZO7E12

CAUTION / NOTICE / HINT

Note


  • Before measuring the resistance of the CAN bus, turn the power switch off and leave the vehicle for 1 minute or more without operating the key, switches or opening or closing the doors. After that, disconnect the cable from the negative (-) auxiliary battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.

  • After turning the power switch off, waiting time may be required before disconnecting the cable from the auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the auxiliary battery terminal notice before proceeding with work Click here.

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

Tech Tips


  • Operating the power switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

  • Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.

PROCEDURE


  1. CHECK FOR OPEN IN CAN BUS WIRE (ACCESSORY METER ASSEMBLY)


    1. A00104DE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      Disconnect the cable from the negative (-) auxiliary battery terminal.

    2. Disconnect the accessory meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L163-15 (WUI) - L163-16 (WUO) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

    NG

    CHECK FOR OPEN IN CAN BUS WIRE (REMOTE TOUCH - ACCESSORY METER ASSEMBLY) Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (ACCESSORY METER ASSEMBLY - AUXILIARY BATTERY AND BODY GROUND)


    1. A000ZX3E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Accessory Meter Assembly)

      Connect the cable to the negative (-) auxiliary battery terminal.

    2. Disconnect the accessory meter assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      L163-12 (+B2) - Body ground Power switch off 11 to 14 V
      L163-24 (ACC) - Body ground Power switch on (ACC) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L163-13 (GND1) - Body ground Always Below 1 Ω

    OK

    REPLACE ACCESSORY METER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. CHECK FOR OPEN IN CAN BUS WIRE (REMOTE TOUCH - ACCESSORY METER ASSEMBLY)


    1. A000TVEE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Remote Touch [Remote Operation Board])

      Disconnect the remote touch (remote operation board) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L169-12 (MI-) - L169-13 (MI+) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher

    OK

    REPLACE REMOTE TOUCH (REMOTE OPERATION BOARD) Click here

    NG

    REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (REMOTE TOUCH - ACCESSORY METER ASSEMBLY)