Toyota Venza: Indicator Circuit

Toyota Venza Service Manual / Lighting (ext) / Lighting System / Indicator Circuit

DESCRIPTION

The headlight beam level control system indicator light in the combination meter assembly comes on for approximately 3 seconds when the ignition switch is turned to ON. The indicator light also comes on when the headlight leveling ECU assembly detects a malfunction.

WIRING DIAGRAM

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (BATTERY - COMBINATION METER ASSEMBLY)

(a) Disconnect the E2 combination meter assembly connector.

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
E2-13 (IG+) - Body ground	Ignition switch ON	11 to 14 V
E2-13 (IG+) - Body ground	Ignition switch off	Below 1 V

Text in Illustration

*1	Front view of wire harness connector (to Combination Meter Assembly)

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT LEVELING ECU ASSEMBLY)

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
A40-6 (WNG) - E2-22 (LVWG)	Always	Below 1 Ω
A40-6 (WNG) - Body ground	Always	10 kΩ or higher

Text in Illustration

Front view of wire harness connector

(to Headlight Leveling ECU Assembly)

Front view of wire harness connector

(to Combination Meter Assembly)

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	INSPECT COMBINATION METER ASSEMBLY

(a) Reconnect the E2 combination meter assembly connector.

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
E2-22 (LVWG) - Body ground	Ignition switch ON	11 to 14 V

Text in Illustration

*1	Component with harness connected (Combination Meter Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE COMBINATION METER ASSEMBLY

Headlight Leveling ECU Power Source Circuit

DESCRIPTION This circuit detects the state of the ignition switch, and sends it to the headlight leveling ECU assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for ci ...

Speed Signal Circuit

DESCRIPTION The headlight leveling ECU assembly receives the vehicle speed signal from the combination meter assembly. HINT: A voltage of 12 V or 5 V is output from each ECU and then inpu ...

Other materials about Toyota Venza:

Data Signal Circuit between Navigation Receiver Assembly and Extension Module
DESCRIPTION The stereo component tuner assembly sends the image data signal to the navigation receiver assembly via this circuit. WIRING DIAGRAM PROCEDURE 1. CHECK NAVIGATION WIRE (a) Remove the navigation wire (See pag ...

On-vehicle Inspection
ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The procedure listed below is for the LH side. PROCEDURE 1. REMOVE REAR WHEEL 2. SEPARATE REAR DISC BRAKE CALIPER ASSEMBLY 3. RE ...

Precaution
PRECAUTION 1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following system after the terminal is reconnected: System Name ...