Toyota Venza manuals

Toyota Venza: Automatic High Beam System (B124B)

Toyota Venza Service Manual / Lighting (ext) / Lighting System / Automatic High Beam System (B124B)

DESCRIPTION

The DTC is stored when the main body ECU (driver side junction block assembly) detects malfunctions in the automatic high beam system.

DTC No.

DTC Detection Condition

Trouble Area

B124B

Malfunction in automatic high beam system

  • Steering angle sensor, VSC system or EFI system
  • Inner rear view mirror assembly

CAUTION / NOTICE / HINT

NOTICE:

First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this symptom.

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs (See page ).


(b) Check for DTCs (See page ).


OK:

DTC B124B is not output.


OK

USE SIMULATION METHOD TO CHECK


NG

2.

CHECK FOR DTC

(a) Check for DTCs (See page ).


Result

Proceed to

DTC B2414 is output

A

DTC B2415 is output

B

DTC U0126, DTC U0129 or DTC U0101 is output

C

Other DTC is not output

D


A

GO TO DTC CHART


B

GO TO DTC CHART


C

GO TO DTC CHART


D

REPLACE INNER REAR VIEW MIRROR ASSEMBLY

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DESCRIPTION The DTC is stored when the main body ECU (driver side junction block assembly) detects malfunctions in the camera (inner rear view mirror assembly). DTC No. DTC D ...

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