Toyota Venza manuals

Toyota Venza: Unlock Warning Switch Circuit

DESCRIPTION

The key unlock warning switch assembly turns on when the ignition key is inserted into the ignition key cylinder and turns off when the ignition key is removed.

The main body ECU (driver side junction block assembly) operates the key confinement prevention function while the key unlock warning switch assembly is on.

WIRING DIAGRAM


PROCEDURE

1.

READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH ASSEMBLY)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Select the item below in the Data List and then read the display on the Techstream.

Main Body

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Key Unlock Warning SW

Unlock warning switch signal/ON or OFF

ON: Key inserted into ignition key cylinder

OFF: Key removed from ignition key cylinder

-

OK:

When the key is in the ignition key cylinder, ON appears on the Techstream.


OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE


NG

2.

INSPECT UNLOCK WARNING SWITCH ASSEMBLY

(a) Remove the unlock warning switch assembly (See page ).



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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D24-1 (UN+) - D24-2 (UN-)

Free

(Key removed)

10 kΩ or higher

D24-1 (UN+) - D24-2 (UN-)

Pushed

(Key set)

Below 1 Ω

Text in Illustration

*1

Component without harness connected

(Unlock Warning Switch Assembly)


NG

REPLACE UNLOCK WARNING SWITCH ASSEMBLY


OK

3.

CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - BODY GROUND)

(a) Disconnect the D24 unlock warning switch assembly connector.


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D24-2 (UN-) - Body ground

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

(to Unlock Warning Switch Assembly)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

4.

CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - MAIN BODY ECU)

(a) Disconnect the D51 main body ECU (driver side junction block assembly) connector.


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D24-1 (UN+) - D51-5 (KSW)

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

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

*2

Front view of wire harness connector

(to Unlock Warning Switch Assembly)


OK

REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

ECU Power Source Circuit
DESCRIPTION This circuit provides power for main body ECU (driver side junction block assembly) operation. WIRING DIAGRAM PROCEDURE 1. CHECK DRIVER SIDE JUNCTION BLOCK A ...

Transponder Key Amplifier
Components COMPONENTS ILLUSTRATION Removal REMOVAL PROCEDURE 1. REMOVE FRONT DOOR SCUFF PLATE 2. REMOVE COWL SIDE TRIM SUB-ASSEMBLY 3. REMOVE LOWER NO. 1 INSTRUMENT PANEL FINISH PA ...

Other materials about Toyota Venza:

If the shift lever cannot be shifted from “P”
If the shift lever cannot be shifted with your foot on the brake, there may be a problem with the shift lock system (a system to prevent accidental operation of the shift lever). Have the vehicle inspected by your Toyota dealer immediately. The following ...

Seat belts
Make sure that all occupants are wearing their seat belts before driving the vehicle.  - Correct use of the seat belts 1. Extend the shoulder belt so that it comes fully over the shoulder, but does not come into contact with the neck or slide off ...

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE MAGNETIC SWITCH ASSEMBLY (a) Remove the nut and disconnect the lead wire from the magnetic switch. (b) Remove the 2 screws holding the magnetic switch to t ...

© 2016-2024 Copyright www.tovenza.com

0.1321