Toyota Venza manuals

Toyota Venza: 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

Ignition switch off

Below 1 V

Text in Illustration

*1

Front view of wire harness connector

(to Combination Meter Assembly)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

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

*1

Front view of wire harness connector

(to Headlight Leveling ECU Assembly)

*2

Front view of wire harness connector

(to Combination Meter Assembly)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

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)


OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE


NG

REPLACE COMBINATION METER ASSEMBLY

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