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.

Click here

PROCEDURE

1.

VEHICLE INFORMATION HEADLIGHT ECU SUB-ASSEMBLY LH

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

Click here

NEXT

2.

CLEAR DTC

(a) Clear the DTCs.

Click here

Body Electrical > HL AutoLeveling > Clear DTCs
NEXT

3.

CHECK FOR DTC

(a) Turn the ignition switch to ON.

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

(c) Check for DTCs.

Click here

Body Electrical > HL AutoLeveling > Trouble Codes

Result

Proceed to

DTC B2451 output does not occur

A

DTC B2451 output occurs

B
A

END (NORMAL AFTER VEHICLE INFORMATION REGISTERED)
B

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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