Lexus NX manuals

Lexus NX: Extension Module Malfunction 2 (B1556)

Lexus NX Service Manual / Audio & Visual & Telematics / Navigation / Multi Info Display / Navigation System / Extension Module Malfunction 2 (B1556)

DESCRIPTION

These DTCs are stored when a malfunction occurs in the Navigation ECU.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1556

Extension Module Malfunction 2

When any of the following conditions is met:

  • Internal hard drive malfunction
  • EEPROM error
  • Storage 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.

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 NAVIGATION ECU

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 Touch Pad Sensor Malfunction (B1559)

DESCRIPTION This DTC is stored if the remote operation controller assembly (remote touch) detects a malfunction in itself, such as internal hardware failure or touch pad sensor malfunction. DTC No.

 Touch Pad Vibration Driver Malfunction (B155A)

DESCRIPTION This DTC is stored if the remote operation controller assembly (remote touch) detects a malfunction in itself, such as internal hardware failure or touch pad vibration driver malfunction.

 Touch Pad Memory Module Malfunction (B155B)

DESCRIPTION This DTC is stored if the remote operation controller assembly (remote touch) detects a malfunction in itself, such as internal hardware failure or touch pad memory module malfunction.

SEE MORE:

 System Description

SYSTEM DESCRIPTION SYSTEM DESCRIPTION (a) The electric parking brake system electronically controls the parking brake lock and release operations using actuators. The main functions are as follows: Functions when vehicle stopped When the electric parking brake switch (integration control and pane

 Installation

INSTALLATION PROCEDURE 1. INSTALL HEADUP DISPLAY SWITCH ASSEMBLY (a) Attach the 4 claws to install the headup display switch assembly. 2. INSTALL NO. 1 SWITCH HOLE BASE Click here 3. INSTALL LOWER NO. 1 INSTRUMENT PANEL FINISH PANEL Click here 4. INSTALL NO. 1 INSTRUMENT PANEL

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