Lexus NX: D-Seat ECU Vehicle Information Reading/Writing Process Malfunction (B15F8)

Lexus NX Service Manual / Audio & Visual & Telematics / Navigation / Multi Info Display / Navigation System / D-Seat ECU Vehicle Information Reading/Writing Process Malfunction (B15F8)

DESCRIPTION

This DTC is stored when items controlled by the position control ECU assembly (driver seat) cannot be customized via the navigation system vehicle customization screen.

HINT:

The position control ECU assembly (driver seat) controls the front power seat control system (w/ Memory) related items that are customizable via the multi-display assembly screen.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15F8

D-Seat ECU Vehicle Information Reading/Writing Process Malfunction

Position control ECU assembly (driver seat) vehicle setting processing malfunction

  • CAN communication system
  • Front power seat control system (w/ Memory)
  • Radio receiver assembly

CAUTION / NOTICE / HINT

NOTICE:

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.

HINT:

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

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 FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)

(a) Check if the front power seat control system (w/ Memory) is malfunctioning.

Click here

HINT:

Customization may not be possible depending on the malfunction in the front power seat control system (w/ Memory).

OK:

No malfunctions are present in the front power seat control system (w/ Memory).

NG

GO TO FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)

OK

3.

CHECK DTC

(a) Clear the DTCs.

Click here

Body Electrical > Navigation System > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.

Click here

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE RADIO RECEIVER ASSEMBLY

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