LIGHTING (EXT)  AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM  B2452  Abnormal Height Sensor Data at Initialization  


DESCRIPTION

The headlight leveling ECU assembly stores this DTC if the sensor value received from the rear height control sensor sub-assembly is out of range when performing initialization of the headlight leveling ECU assembly; for example, the vehicle was not level or was being jack up.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2452 Abnormal Height Sensor Data at Initialization Rear height control sensor sub-assembly value is out of range when performing initialization
·

Vehicle condition when performing initialization

·

Rear height control sensor sub-assembly

·

Headlight leveling ECU assembly



CAUTION / NOTICE / HINT

NOTICE:
·

If the headlight leveling ECU assembly has been replaced, it is necessary to initialize the headlight leveling ECU assembly.

Click hereVehicle Exterior>LIGHTING (EXT)>AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM>INITIALIZATION

·

If any of the following are performed, it is necessary to initialize the headlight leveling ECU assembly.

Click hereVehicle Exterior>LIGHTING (EXT)>AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM>INITIALIZATION

·

Replacement of the rear height control sensor sub-assembly

·

Removal/installation of the rear height control sensor sub-assembly

·

Work that changes the vehicle height such as replacement of suspension components




PROCEDURE

1.CLEAR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.


e.

Clear the DTCs.

Body Electrical > HL AutoLeveling > Clear DTCs
50002 361

Result:
Proceed to
NEXT



NEXT

2.CHECK FOR DTC
2.CHECK FOR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.


e.

Check for DTCs.

Body Electrical > HL AutoLeveling > Trouble Codes
50001 361
OK:

DTC B2452 is not output.


HINT:

If any DTCs other than B2452 are output, troubleshoot for those DTCs first.



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


NG

3.CHECK REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY
3.CHECK REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY
a.

Check the installation condition of the rear height control sensor sub-assembly.

OK:

Rear height control sensor sub-assembly is installed correctly.



Result:
Proceed to
OK
NG



OK

4.REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY

NG

INSTALL PARTS CORRECTLY

Click hereVehicle Exterior>LIGHTING (EXT)>HEIGHT CONTROL SENSOR>INSTALLATION


4.REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY
a.

Replace the rear height control sensor sub-assembly with a new or known good one.

Click hereVehicle Exterior>LIGHTING (EXT)>HEIGHT CONTROL SENSOR>REMOVAL


Result:
Proceed to
NEXT



NEXT

5.CLEAR DTC
5.CLEAR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.


e.

Clear the DTCs.

Body Electrical > HL AutoLeveling > Clear DTCs
50002 361

Result:
Proceed to
NEXT



NEXT

6.CHECK FOR DTC
6.CHECK FOR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.


e.

Check for DTCs.

Body Electrical > HL AutoLeveling > Trouble Codes
50001 361
OK:

DTC B2452 is not output.



Result:
Proceed to
OK
NG



OK

END (REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY WAS DEFECTIVE)

NG

REPLACE HEADLIGHT LEVELING ECU ASSEMBLY

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT LEVELING ECU>REMOVAL