DTC B15F5: Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction [06/2017 - ]: Procedure

1. Use the Techstream to check if the CAN communication system is functioning normally.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - ]

   OK

   CAN communication DTCs are not output.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - ] 

Result: 

OK 

See step  2

1. Check if the air conditioning system is malfunctioning.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - 10/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - ]

   HINT: 

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

   OK

   No malfunctions are present in the air conditioning system.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO AIR CONDITIONING SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2017 - 10/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - ] 

Result: 

OK 

See step  3

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

   HINT: 

   The items shown as customizable via the navigation system vehicle customization screen can also be changed using the Techstream. In the following step, the Techstream will be used.

   1. To match-up the items on the navigation system vehicle customization screen with the items on the Techstream, check the customize parameters list for the air conditioning system related items that can be customized via the navigation system vehicle customization screen.

      Refer to CUSTOMIZE PARAMETERS [06/2017 - ]

2. Using the Techstream, check that it is possible to change the settings of the customize parameters that are available for customization via the navigation system vehicle customization screen.

   OK

   The items available for customization via the navigation system vehicle customization screen can be customized successfully using the Techstream.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [06/2017 - 10/2020]  , or refer to  REMOVAL [10/2020 - ] 

Result: 

NG 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to  REMOVAL [06/2017 - ]