Lexus NX: 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.

Detection Item

DTC Detection Condition

Trouble Area

B1559

Touch Pad Sensor Malfunction

Internal touch pad sensor malfunction

Remote operation controller assembly (remote touch)

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.

HINT:

  • If DTC B155B is output, perform troubleshooting for DTC B155B first.

    Click here

  • Touch pad touch detection is performed using the electrostatic sensor and G sensor. However, there is no effect on the basic functions of the touch pad when the G sensor is not operating. Therefore, a counter is used to prevent DTCs from being output immediately (in order to reduce excessive DTC output). Therefore, when DTCs are not output, it is necessary to turn the power switch from on (ACC) to off and check for DTCs again.
OK

USE SIMULATION METHOD TO CHECK

NG

2.

REMOTE TOUCH SELF CHECK (CHECK TOUCH SCREEN OPERATION POSITION RECOGNITION CONDITION)

(a) Enter self-diagnostic mode.

Click here

(b) Operate the remote touch screen diagonally from the upper left to the lower right and check that the brightness of the switch illumination changes.

NOTICE:

Since the remote touch screen may recognize a pinch in/out operation if operated with 2 fingers, always use 1 finger to operate the remote touch in self-diagnostic mode.

OK:

Brightness changes according to touch screen operation.

Result

Proceed to

Brightness of the switch illumination changes according to remote touch screen operation.

A

Brightness of the switch illumination does not change according to remote touch screen operation.

B

Switch illumination continues to blink.

*a

Switch Illumination

*b

Touch Screen

B

REPLACE REMOTE OPERATION CONTROLLER ASSEMBLY (REMOTE TOUCH)

A

3.

CHECK DTC

(a) Clear the DTCs.

Click here

Body Electrical > Navigation System > Clear DTCs

(b) Turn the power switch off.

(c) Turn the power switch on (ACC) and wait for 40 seconds.

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

Click here

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

HINT:

Touch pad touch detection is performed using the electrostatic sensor and G sensor. However, there is no effect on the basic functions of the touch pad when the G sensor is not operating. Therefore, a counter is used to prevent DTCs from being output immediately (in order to reduce excessive DTC output). Therefore, when DTCs are not output, it is necessary to turn the power switch from on (ACC) to off and check for DTCs again.

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE REMOTE OPERATION CONTROLLER ASSEMBLY (REMOTE TOUCH)

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