B15F5

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HDD): B15F5: A/C ECU Vehicle Information Reading/Writing Processor Malfunction
B15F5 - A/C ECU Vehicle Information Reading/Writing Processor Malfunction

DESCRIPTION

This DTC is stored when items controlled by the A/C ECU (air conditioning amplifier assembly) cannot be customized via the navigation system vehicle customization screen.

HINT
The A/C ECU (air conditioning amplifier assembly) controls the air conditioning system related items that are customizable via the multi-display screen.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Use the Techstream to check if the CAN communication system is functioning normally How to Proceed With Troubleshooting.

OK:

CAN communication DTCs are not output.

NG -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
OK -- Continue to next step.

2. CHECK AIR CONDITIONING SYSTEM

(a) Check if the air conditioning system is malfunctioning How To Proceed With Troubleshooting.

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.

NG -- GO TO AIR CONDITIONING SYSTEM How To Proceed With Troubleshooting
OK -- Continue to next step.

3. CHECK CUSTOMIZE ITEMS

(a) Display the "Vehicle Customization" screen.





(b) Make a note of the customizable items for the air conditioning system.

HINT
These air conditioning system items shown as customizable via the multi-display vehicle customization screen can also be changed using the Techstream. In the following steps, the Techstream will be used.

(1) To match-up the items in the multi-display with the items on the Techstream, check the customize parameters list for the air conditioning system related items that can be customized via the multi-display screen Customize Parameters.

(c) Using the Techstream, confirm that it is possible to change the settings of the air conditioning system related customize parameters that are shown as customizable via the multi-display screen.

OK:

The items available for customization via the multi-display screen can be customized successfully using the Techstream.

Text in Illustration





NG -- REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Removal

OK -- REPLACE NAVIGATION COMPUTER SUB-ASSEMBLY Removal