Lexus ES manuals

Lexus ES: Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction (B15F5)

Lexus ES (XZ10) Service Manual / Audio & Visual & Telematics / Navigation / Multi Info Display / Navigation System (for Hv Model) / Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction (B15F5)

DESCRIPTION

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

HINT:

The air conditioning amplifier assembly controls the air conditioning system related items that are customizable via the multi-display assembly screen.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15F5

Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction

Air conditioning amplifier assembly vehicle setting processing malfunction

  • CAN communication system
  • Air conditioning system
  • Air conditioning amplifier assembly
  • Radio receiver assembly

CAUTION / NOTICE / HINT

NOTICE:

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

    Click here

  • When replacing the radio receiver assembly, always replace it with a new one. If a radio receiver assembly which was installed to another vehicle is used, the following may occur:
    • A communication malfunction DTC may be stored.
    • The radio receiver assembly may not operate normally.

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

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

Click here

OK:

CAN communication DTCs are not output.

NG

GO TO CAN COMMUNICATION SYSTEM

OK

2.

CHECK AIR CONDITIONING SYSTEM

(a) Check if the air conditioning system is malfunctioning.

Click here

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

OK

3.

CHECK CUSTOMIZE ITEMS

(a) Display the "Vehicle Customization" screen.

(b) 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 multi-display assembly 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 assembly screen.

Click here

(c) Using the Techstream, check that it is possible to change the settings of the customize parameters that are available for customization via the multi-display assembly screen.

OK:

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

OK

REPLACE RADIO RECEIVER ASSEMBLY

NG

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

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