Toyota Venza: Automatic High Beam Mirror (B124A)

Toyota Venza Service Manual / Lighting (ext) / Lighting System / Automatic High Beam Mirror (B124A)

DESCRIPTION

The DTC is stored when the main body ECU (driver side junction block assembly) detects malfunctions in the inner rear view mirror assembly.

DTC No.	DTC Detection Condition	Trouble Area
B124A	Malfunction in inner rear view mirror assembly	Inner rear view mirror assembly

WIRING DIAGRAM

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 B124A is not output.

USE SIMULATION METHOD TO CHECK

REPLACE INNER REAR VIEW MIRROR ASSEMBLY

Lost Communication with ECM (U0101,U0073,U0126,U0129,U0142,U0182,U1000)

DESCRIPTION The DTCs are stored when the CAN communication system is malfunctioning. DTC No. DTC Detection Condition Trouble Area U0101 L ...

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 Condi ...

Other materials about Toyota Venza:

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. CHECK THROTTLE BODY ASSEMBLY (a) Check the throttle control motor operating sounds. (1) Turn the ignition switch to ON. (2) When pressing the accelerator pedal, check the operating sound of the running motor. Make sure ...

Removal
REMOVAL PROCEDURE 1. PRECAUTION CAUTION: Be sure to read Precaution thoroughly before servicing (See page ). 2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) bat ...

PBD Pulse Sensor Malfunction (B2222)
DESCRIPTION A pulse sensor is built into the power back door ECU (power back door motor unit) to detect foreign objects and the back door position. The pulse sensor monitors the operating speed of the back door to detect foreign objects. Th ...