Toyota Venza manuals

Toyota Venza: Door Unlock Detection Switch Circuit

Toyota Venza Service Manual / Lighting (int) / Lighting System / Door Unlock Detection Switch Circuit

DESCRIPTION

The main body ECU (driver side junction block assembly) detects the condition of the door unlock detection switch.

WIRING DIAGRAM


PROCEDURE

1.

READ VALUE 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 / Data List.

(e) Read the display on the Techstream.

Main Body

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

D-Door Lock Pos SW

Driver side door unlock detection switch signal/ON or OFF

ON: Driver side door unlocked

OFF: Driver side door locked

-

P-Door Lock Pos SW

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

ON: Front passenger side door unlocked

OFF: Front passenger side locked

-

RL-Door Lock Pos SW

Rear door unlock detection switch LH or RH signal/ON or OFF

ON: Rear door LH or RH unlocked

OFF: Rear door LH and RH locked

-

RR-Door Lock Pos SW

Rear door unlock detection switch LH or RH signal/ON or OFF

ON: Rear door LH or RH unlocked

OFF: Rear door LH and RH locked

-

Result

Proceed to

OK

A

Driver side door unlock detection switch does not operate

B

Front passenger side door unlock detection switch does not operate

C

Rear door unlock detection switch LH does not operate

D

Rear door unlock detection switch RH does not operate

E


A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE


C

GO TO STEP 4


D

GO TO STEP 6


E

GO TO STEP 8


B

2.

INSPECT FRONT DOOR LOCK ASSEMBLY LH

(a) Remove the front door lock assembly LH (See page ).



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

Standard Resistance:

Tester Connection

Condition

Specified Condition

7 - 8

Locked

10 kΩ or higher

7 - 8

Unlocked

Below 1 Ω

Text in Illustration

*1

Component without harness connected

(Front Door Lock Assembly LH)

*2

Unlock

*3

Lock


NG

REPLACE FRONT DOOR LOCK ASSEMBLY LH


OK

3.

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT DOOR LOCK ASSEMBLY LH)

(a) Disconnect the I7 front door lock assembly LH connector.


(b) Disconnect D50 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

(Symbols)

Condition

Specified Condition

I7-8 - D50-9 (LSWD)

Always

Below 1 Ω

I7-8 - Body ground

Always

10 kΩ or higher

I7-7 - Body ground

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

(to Front Door Lock Assembly LH)

*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

4.

INSPECT FRONT DOOR LOCK ASSEMBLY RH

(a) Remove the front door lock assembly RH (See page ).



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

Standard Resistance:

Tester Connection

Condition

Specified Condition

7 - 8

Locked

10 kΩ or higher

7 - 8

Unlocked

Below 1 Ω

Text in Illustration

*1

Component without harness connected

(Front Door Lock Assembly RH)

*2

Unlock

*3

Lock


NG

REPLACE FRONT DOOR LOCK ASSEMBLY RH


OK

5.

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT DOOR LOCK ASSEMBLY RH)

(a) Disconnect the H7 front door lock assembly RH connector.


(b) Disconnect the D49 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

(Symbols)

Condition

Specified Condition

H7-7 - D49-27 (LSWP)

Always

Below 1 Ω

H7-7 - Body ground

Always

10 kΩ or higher

H7-8 - Body ground

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

(to Front Door Lock Assembly RH)

*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

6.

INSPECT REAR DOOR LOCK ASSEMBLY LH

(a) Remove the rear door lock assembly LH (See page ).



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

Standard Resistance:

Tester Connection

Condition

Specified Condition

6 - 9

Locked

10 kΩ or higher

6 - 9

Unlocked

Below 1 Ω

Text in Illustration

*1

Component without harness connected

(Rear Door Lock Assembly LH)

*2

Lock

*3

Unlock


NG

REPLACE REAR DOOR LOCK ASSEMBLY LH


OK

7.

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - REAR DOOR LOCK ASSEMBLY LH)

(a) Disconnect the K3 rear door lock assembly LH connector.


(b) Disconnect the 2O 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

(Symbols)

Condition

Specified Condition

K3-6 - 2O-5

Always

Below 1 Ω

K3-6 - Body ground

Always

10 kΩ or higher

K3-9 - Body ground

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

(to Rear Door Lock Assembly LH)

*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

8.

INSPECT REAR DOOR LOCK ASSEMBLY RH

(a) Remove the rear door lock assembly RH (See page ).



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

Standard Resistance:

Tester Connection

Condition

Specified Condition

6 - 9

Locked

10 kΩ or higher

6 - 9

Unlocked

Below 1 Ω

Text in Illustration

*1

Component without harness connected

(Rear Door Lock Assembly RH)

*2

Lock

*3

Unlock


NG

REPLACE REAR DOOR LOCK ASSEMBLY RH


OK

9.

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - REAR DOOR LOCK ASSEMBLY RH)

(a) Disconnect the J3 rear door lock assembly RH connector.


(b) Disconnect the 2F 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 (Symbols)

Condition

Specified Condition

J3-6 - 2F-5

Always

Below 1 Ω

J3-6 - Body ground

Always

10 kΩ or higher

J3-9 - Body ground

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

(to Rear Door Lock Assembly RH)

*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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