Toyota Venza manuals

Toyota Venza: Headlight Relay Circuit

DESCRIPTION

The main body ECU (driver side junction block assembly) controls the headlight relays.

WIRING DIAGRAM



CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Active Test.

(e) Check that the relays operate.

Main Body

Tester Display

Test Part

Control Range

Diagnostic Note

Headlight Relay

Headlight Relay

ON/OFF

-

OK:

Headlight relays operate. (Low beam headlights illuminate.)


OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE


NG

2.

INSPECT ENGINE ROOM JUNCTION BLOCK ASSEMBLY

(a) Remove the power distributor (engine room junction block assembly) from the engine room relay block (See page ).



(b) Connect a positive (+) lead from the battery to terminal 1A-1.

(c) Connect a negative (-) lead from the battery to terminal 1F-17.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

1D-1 - Battery negative

Always

11 to 14 V

1D-2 - Battery negative

Always

11 to 14 V

Text in Illustration

*1

Component without harness connected

(Power Distributor (Engine Room Junction Block Assembly))


NG

REPLACE POWER DISTRIBUTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY)


OK

3.

CHECK HARNESS AND CONNECTOR (BATTERY - ENGINE ROOM JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the 1A power distributor (engine room junction block assembly) connector.


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

Standard Voltage:

Tester Connector

Condition

Specified Condition

1A-1 - Body ground

Always

11 to 14 V

Text in Illustration

*1

Front view of wire harness connector

(to Power Distributor (Engine Room Junction Block Assembly))


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

4.

CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY - MAIN BODY ECU)

(a) Disconnect the 1F power distributor (engine room junction block assembly) connector.


(b) Disconnect the 2G main body ECU (driver side junction block assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1F-17 - 2G-35

Always

Below 1 Ω

1F-17 - Body ground

Always

10 kΩ or higher

Text in Illustration

*1

Front view of wire harness connector

(to Power Distributor (Engine Room Junction Block Assembly))

*2

Front view of wire harness connector

(to Main Body ECU (Driver Side Junction Block Assembly))


OK

REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)


NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Steering Position Sensor Malfunction (B2414)
DESCRIPTION The AFS ECU (headlight swivel ECU assembly) receives signals indicating the swerve-angle from the steering angle sensor using CAN communication. DTC No. DTC Detec ...

Headlight Solenoid Circuit
DESCRIPTION for HID Headlight: When the main body ECU receives a high beam turn on signal, the main body ECU activates the bi-function by controlling the BI-XENON relay. The bi-func ...

Other materials about Toyota Venza:

Only Wireless Control Function is Inoperative
DESCRIPTION The door control receiver receives signals from the transmitter and sends these signals to the main body ECU. The main body ECU then controls all doors by sending lock/unlock signals to each door, and sends hazard flasher relay signals to the ...

Installation
INSTALLATION PROCEDURE 1. INSTALL FRONT SEAT ASSEMBLY (a) Place the front seat assembly in the cabin. NOTICE: Be careful not to damage the vehicle body. (b) Connect each connector under the front seat assembly. (c) Temporarily install the front seat ass ...

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON and turn the Techstream on. (c) Enter the following menus: Body Electrical / Trouble Codes. (d) Check for DTCs. 2. CLEAR DTC (a) Connect the Techst ...

© 2016-2020 Copyright www.tovenza.com

0.4852