Lexus ES manuals

Lexus ES: Navigation Processor Malfunction (B15AD)

Lexus ES (XZ10) Service Manual / Audio & Visual & Telematics / Navigation / Multi Info Display / Navigation System (for Hv Model) / Navigation Processor Malfunction (B15AD)

DESCRIPTION

This DTC is stored when a malfunction occurs in the navigation ECU.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15AD

Navigation Processor Malfunction

When either condition below is met:

  • A short to ground, short to +B or open occurs in the gyro signal circuit
  • Gyro sensor malfunction

Navigation ECU

CAUTION / NOTICE / HINT

NOTICE:

When replacing the navigation ECU, always replace it with a new one. If a navigation ECU which was installed to another vehicle is used, the following may occur:

  • A communication malfunction DTC may be stored.
  • The navigation ECU may not operate normally.

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs.

Body Electrical > Navigation System > Clear DTCs

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

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE NAVIGATION ECU

READ NEXT:

 Speed Signal Malfunction (B15C2)

DESCRIPTION The navigation ECU receives a vehicle speed signal from the combination meter assembly and information from the navigation antenna assembly, and then adjusts the vehicle position on the ma

 Speaker Output Short (B15C3)

DESCRIPTION This DTC is stored when a malfunction occurs in the speakers. DTC No. Detection Item DTC Detection Condition Trouble Area B15C3 Speaker Output Short A short is detected in

 MOST Communication Malfunction (B15D0)

DESCRIPTION Navigation system components communicate with each other via MOST communication. If a line short or short to ground occurs in a MOST communication line, communication will not be possible

SEE MORE:

 Components

COMPONENTS ILLUSTRATION *A for Driver Side *B for Front Passenger Side *C w/ Illumination - - *1 BOX BOTTOM MAT *2 COURTESY LIGHT ASSEMBLY *3 DOOR ARMREST COVER *4 FRONT DOOR INSIDE HANDLE SUB-ASSEMBLY *5 FRONT DOOR TRIM BOARD SUB-ASSEMBLY *6 MULTIPL

 Terminals Of Ecu

TERMINALS OF ECU CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) (a) Disconnect the P22 sliding roof ECU (sliding roof drive gear sub-assembly) connector. (b) Measure the resistance and voltage according to the value(s) in the table below. HINT: Measure the values on the wire harness

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