Toyota Venza: Headlight Signal Circuit

Toyota Venza Service Manual / Lighting (ext) / Lighting System / Headlight Signal Circuit

DESCRIPTION

The headlight leveling ECU assembly detects the low beam headlights status.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

First check that the low beam headlights operate normally.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY - ECU)

(a) Disconnect the A40 headlight leveling ECU assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
A40-3 (B2) - Body ground	Light control switch in head position	11 to 14 V

Text in Illustration

*1	Front view of wire harness connector (to Headlight Leveling ECU assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

Front Fog Light Circuit

DESCRIPTION The main body ECU (driver side junction block assembly) controls the fog light relay. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this ...

Light Control Switch Circuit

DESCRIPTION The main body ECU (driver side junction block assembly) receives the following switch information: Light control switch position off, tail, head or AUTO Dimmer switch positi ...

Other materials about Toyota Venza:

Dtc Check / Clear
DTC CHECK / CLEAR 1. DTC CHECK/CLEAR (When Using the Techstream) (a) Check for DTCs. (1) Connect the Techstream to the DLC3. (2) Turn the ignition switch to ON. (3) Turn the Techstream on. (4) Read the DTCs following the prompts on the Techstream. Enter ...

Removal
REMOVAL CAUTION / NOTICE / HINT NOTICE: Make sure to select FACE mode before disconnecting the cable from the negative (-) battery terminal. PROCEDURE 1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM 2. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBL ...

Installation
INSTALLATION PROCEDURE 1. INSTALL TELEVISION CAMERA ASSEMBLY (w/ Rear View Monitor System) 2. INSTALL BACK DOOR OPENER SWITCH ASSEMBLY 3. INSTALL NO. 1 BACK DOOR EMBLEM 4. INSTALL NO. 2 BACK DOOR NAME PLATE 5. INSTALL BACK DOOR OUTSIDE GARNIS ...