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:

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the wiper and washer system. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT ...

System Description
SYSTEM DESCRIPTION 1. BACK DOOR CLOSER SYSTEM DESCRIPTION (a) Operating any power back door switch when the back door is fully closed inputs a request signal to the power back door ECU*1 or back door closer ECU*2. The power back door ECU*1 or back door c ...

Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) (P0128)
DESCRIPTION HINT: This DTC relates to the thermostat. This DTC is stored when the engine coolant temperature does not reach 75°C (167°F) despite sufficient engine warm-up time having elapsed. DTC No. DTC Detection Condition ...