Toyota CH-R Service Manual: Height Control Sensor Data Out of Range When Initializing (B2452)

Toyota CH-R Service Manual / Lighting (ext) / Automatic Headlight Beam Level Control System / Height Control Sensor Data Out of Range When Initializing (B2452)

DESCRIPTION

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

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B2452	Height Control Sensor Data Out of Range When Initializing	Rear height control sensor sub-assembly LH value is out of range when initializing	Vehicle condition when initializing Rear height control sensor sub-assembly LH	-

CAUTION / NOTICE / HINT

NOTICE:

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

Click here

Replacement of the rear height control sensor sub-assembly LH
Removal/installation of the rear height control sensor sub-assembly LH
Work that changes the vehicle height such as replacement of suspension components

PROCEDURE

CLEAR DTC

(a) Clear the DTCs.

Click here

Body Electrical > HL AutoLeveling > Clear DTCs

2.	CHECK FOR DTC

(a) Turn the ignition switch to ON.

(b) Check for DTCs.

Click here

Body Electrical > HL AutoLeveling > Trouble Codes

OK:

DTC B2452 is not output.

USE SIMULATION METHOD TO CHECK

3.	CHECK AND REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH

(a) Check the installation condition of the rear height control sensor sub-assembly LH.

OK:

Rear height control sensor sub-assembly LH is installed correctly.

REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH

INSTALL PARTS CORRECTLY

Diagnostic Trouble Code Chart

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Left Headlight ECU Variation Error (B2456)

DESCRIPTION This DTC is stored when a headlight ECU sub-assembly LH which is not compatible with the vehicle has been installed. DTC No. Detection Item DTC Detecti ...

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