(b) Make a note of the customizable items for the air conditioning system.
HINT
These air conditioning system items shown as customizable via the navigation system 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 See: Heating and Air Conditioning/Testing
and Inspection/Programming and Relearning/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
OK -- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY See: Accessories and Optional Equipment/Navigation
System/Service and Repair/Navigation Receiver (for HDD)/Removal
From 08/2009
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 navigation system screen.
INSPECTION PROCEDURE
PROCEDURE
1. CHECK CAN COMMUNICATION SYSTEM
(a) Use the Techstream to check if the CAN communication system is functioning normally See: Powertrain Management/Computers
and Control Systems/Information Bus/Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN Communication
System/How to Proceed With Troubleshooting.
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