Toyota Venza manuals

Toyota Venza: All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch

Toyota Venza Service Manual / Door Lock / Power Door Lock Control System / All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch

DESCRIPTION

The main body ECU (driver side junction block assembly) receives switch signals from the door control switch and activates the door lock motor on each door according to these signals.

WIRING DIAGRAM


PROCEDURE

1.

READ VALUE USING TECHSTREAM (DOOR CONTROL SWITCH)

(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 / Data List.

(e) Read the Data List according to the display on the Techstream.

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

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Door Lock SW-Lock

Front passenger side door control switch lock signal/ON or OFF

ON: Front passenger side door control switch pushed to lock position

OFF: Front passenger side door control switch not pushed to lock position

-

Door Lock SW-Unlock

Front passenger side door control switch unlock signal/ON or OFF

ON: Front passenger side door control switch pushed to unlock position

OFF: Front passenger side door control switch not pushed to unlock position

-

OK:

On the Techstream screen, ON or OFF will be displayed accordingly.


OK

REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)


NG

2.

INSPECT DOOR CONTROL SWITCH ASSEMBLY

(a) Remove the door control switch assembly (See page ).



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

Standard Resistance:

Tester Connection

Condition

Specified Condition

4 (L) - 3 (E)

Lock

Below 1 Ω

4 (L) - 3 (E)

Off

10 kΩ or higher

2 (UL) - 3 (E)

Unlock

Below 1 Ω

2 (UL) - 3 (E)

Off

10 kΩ or higher

Text in Illustration

*1

Component without harness connected

(Door Control Switch Assembly)

*2

Unlock

*3

Lock


NG

REPLACE DOOR CONTROL SWITCH ASSEMBLY


OK

3.

CHECK HARNESS AND CONNECTOR (DOOR CONTROL SWITCH - MAIN BODY ECU AND BODY GROUND)

(a) Disconnect the 2J driver side junction block connector.


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

H6-2 (UL) - 2J-4 (UL1)

Always

Below 1 Ω

H6-4 (L) - 2J-3 (L1)

Always

Below 1 Ω

H6-3 (E) - Body ground

Always

Below 1 Ω

H6-2 (UL) - Body ground

Always

10 kΩ or higher

H6-4 (L) - Body ground

Always

10 kΩ or higher

Text in Illustration

*1

Front view of wire harness connector

(to Door Control Switch 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

REPAIR OR REPLACE HARNESS OR CONNECTOR

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