Toyota CH-R Service Manual: Vehicle Specifications have not been Stored (B2451)

Toyota CH-R Service Manual / Lighting (ext) / Lighting System / Vehicle Specifications have not been Stored (B2451)

DESCRIPTION

This DTC is output if the vehicle variation information is not written to the headlight ECU sub-assembly LH.

The headlight ECU sub-assembly LH outputs DTC B2451.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B2451	Vehicle Specifications have not been Stored	Vehicle specification information not written	Headlight ECU sub-assembly LH	-

CAUTION / NOTICE / HINT

NOTICE:

After the headlight ECU sub-assembly LH is replaced, vehicle information registration and initialization are necessary.

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PROCEDURE

1.	VEHICLE INFORMATION HEADLIGHT ECU SUB-ASSEMBLY LH

(a) Register vehicle information for the headlight ECU sub-assembly LH.

Click here

CLEAR DTC

(a) Clear the DTCs.

Click here

Body Electrical > HL AutoLeveling > Clear DTCs

3.	CHECK FOR DTC

(a) Turn the ignition switch to ON.

(b) Turn on the headlights using the light control switch.

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Body Electrical > HL AutoLeveling > Trouble Codes

Result	Proceed to
DTC B2451 output does not occur	A
DTC B2451 output occurs	B

END (NORMAL AFTER VEHICLE INFORMATION REGISTERED)

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH

Open in IG Circuit (B242E)

DESCRIPTION This DTC is stored when a malfunction occurs in the headlight ECU sub-assembly LH IG power source circuit. The headlight ECU sub-assembly LH stores DTC B242E. DTC No. ...

CAN Communication Failure (Message Registry) (U1000)

DESCRIPTION The headlight ECU sub-assembly LH stores this DTC if it detects an internal malfunction related to the CAN communication system. DTC No. Detection Item ...

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DESCRIPTION If the key ID codes of the key and transponder key ECU assembly match, the immobiliser system is unset and the engine start permission signal is sent to the ECM. When the ID codes of the transponder key ECU assembly and ECM match, the engine starts. WIRING DIAGRAM CAUTION / NOTI ...

Toyota CH-R Service Manual: Vehicle Specifications have not been Stored (B2451)

Open in IG Circuit (B242E)

CAN Communication Failure (Message Registry) (U1000)

Other materials:

Toyota CH-R Owners Manual

Toyota CH-R Service Manual