Toyota Venza manuals

Toyota Venza: Taillight Relay Circuit

DESCRIPTION

The main body ECU (driver side junction block assembly) controls the operation of the TAIL relay.

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 relay operates.

Main Body

Tester Display

Test Part

Control Range

Diagnostic Note

Taillight Relay

Taillight relay

ON/OFF

-

OK:

Taillight relay operates. (Taillights illuminate.)


OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE


NG

2.

INSPECT TAILLIGHT RELAY (TAIL)

(a) Remove the taillight relay from the main body ECU (driver side junction block assembly).


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 - 5

Voltage is not applied between terminals 1 and 2

10 kΩ or higher

Apply the battery voltage between terminals 1 and 2

Below 1 Ω

3 - 4

Voltage is not applied between terminals 1 and 2

Below 1 Ω

Apply the battery voltage between terminals 1 and 2

10 kΩ or higher


NG

REPLACE TAILLIGHT RELAY


OK

3.

CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the 2A main body ECU (driver side junction block assembly) connector.


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

Standard Voltage:

Tester Connection

Condition

Specified Condition

2A-1 - Body ground

Always

11 to 14 V

Text in Illustration

*1

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

REPAIR OR REPLACE HARNESS OR CONNECTOR

Parking Brake Switch Circuit
DESCRIPTION The main body ECU (driver side junction block assembly) detects the condition of the parking brake switch. WIRING DIAGRAM PROCEDURE 1. READ VALUE USING TECHS ...

Headlight Beam Level Control Actuator Circuit
DESCRIPTION The headlight leveling ECU assembly actuates the headlight leveling motor according to vehicle conditions. WIRING DIAGRAM PROCEDURE 1. READ VALUE USING TECHS ...

Other materials about Toyota Venza:

Removal
REMOVAL PROCEDURE 1. REMOVE WHEEL ASSEMBLY 2. REMOVE TIRE PRESSURE WARNING VALVE AND TRANSMITTER (a) Remove the tire valve cap. NOTICE: Keep the removed tire valve cap. (b) Remove the valve core to release the air from the tire. NOTICE: Make sure that ...

Inspection
INSPECTION PROCEDURE 1. INSPECT VACUUM SWITCHING VALVE ASSEMBLY (for ACIS) (a) Measure the resistance according to the value(s) in the table below. Text in Illustration *1 Body Ground Stan ...

No Sound can be Heard from Speakers
PROCEDURE 1. CHECK AUDIO SETTINGS (a) In sound output setting mode, set volume, fader and balance to the initial values and check that the sound is normal. OK: Audio system returns to normal. HINT: Sound quality adjustm ...

© 2016-2025 Copyright www.tovenza.com

0.1625