Lexus ES manuals

Lexus ES: Certification ECU Vehicle Information Reading/Writing Process Malfunction (B15F7)

Lexus ES (XZ10) Service Manual / Audio & Visual & Telematics / Navigation / Multi Info Display / Navigation System (for Hv Model) / Certification ECU Vehicle Information Reading/Writing Process Malfunction (B15F7)

DESCRIPTION

This DTC is stored when items controlled by the certification ECU (smart key ECU assembly) cannot be customized via the navigation system vehicle customization screen.

HINT:

The certification ECU (smart key ECU assembly) controls the smart access system with push-button start (for Entry Function) related items that are customizable via the multi-display assembly screen.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15F7

Certification ECU Vehicle Information Reading/Writing Process Malfunction

Certification ECU (smart key ECU assembly) vehicle setting processing malfunction

  • CAN communication system
  • Smart access system with push-button start (for Entry Function)
  • Certification ECU (smart key ECU 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.
  • Before replacing the certification ECU (smart key ECU assembly), refer to Registration.

    Click here

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 SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function)

(a) Check if the smart access system with push-button start (for Entry Function) is malfunctioning.

Click here

HINT:

Customization may not be possible depending on the malfunction in the smart access system with push-button start (for Entry Function).

OK:

No malfunctions are present in the smart access system with push-button start (for Entry Function).

NG

GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function)

OK

3.

CHECK CUSTOMIZE ITEMS

(a) Display the "Vehicle Customization" screen.

(b) Make a note of the customizable items for each certification ECU related 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 smart access system with push-button start (for Entry Function) 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 CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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