NAVIGATION SYSTEM, Diagnostic DTC:B15F5

DTC Code DTC Name
B15F5 A/C ECU Vehicle Information Reading/Writing Processor Malfunction

DESCRIPTION

This DTC is stored when items controlled by the air conditioning amplifier assembly cannot be customized via the navigation system vehicle customization screen.

Tech Tips

The air conditioning amplifier assembly controls the air conditioning system related items that are customizable via the radio and display receiver assembly screen.

DTC Code DTC Detection Condition Trouble Area
B15F5 Air conditioning amplifier assembly vehicle setting processing error.

  • CAN communication system

  • Air conditioning system

  • Air conditioning amplifier assembly

  • Radio and display receiver assembly

CAUTION / NOTICE / HINT

Note

Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections Click here.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. w/ Toyota Safety Sense:


      1. Use the GTS to check if the CAN communication system is functioning normally Click here.

    2. w/o Toyota Safety Sense:


      1. Use the GTS to check if the CAN communication system is functioning normally Click here.

      OK
      CAN communication DTCs are not output.
      Result
      Result Proceed to
      OK A
      NG (w/ Toyota Safety Sense) B
      NG (w/o Toyota Safety Sense) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK AIR CONDITIONING SYSTEM


    1. Check if the air conditioning system is malfunctioning Click here.

      Tech Tips

      Customization may not be possible depending on the malfunction in the air conditioning system.

      OK
      No malfunctions are present in the air conditioning system.

    NG

    GO TO AIR CONDITIONING SYSTEM Click here

    OK

  3. CHECK CUSTOMIZE ITEMS


    1. Display the "Vehicle Customization" screen.

    2. Make a note of the customizable items for the air conditioning system.

      Tech Tips

      These air conditioning system items shown as customizable via the radio and display receiver assembly vehicle customization screen can also be changed using the GTS. In the following steps, the GTS will be used.


      1. To match-up the items in the radio and display receiver assembly with the items on the GTS, check the customize parameters list for the air conditioning system related items that can be customized via the radio and display receiver assembly screen Click here.

    3. Using the GTS, confirm that it is possible to change the settings of the air conditioning system related customize parameters that are shown as customizable via the radio and display receiver assembly screen.

      OK
      The items available for customization via the radio and display receiver assembly screen can be customized successfully using the GTS.

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here