Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VJN9
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: LIGHTING (INT): LIGHTING SYSTEM: Door Unlock Detection Switch Circuit; 2016 - 2020 MY Sienna [12/2015 -        ]

Door Unlock Detection Switch Circuit

DESCRIPTION

The main body ECU 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) According to the display on the Techstream, read the Data List.

Main Body

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

FL Door Lock Pos

Front door unlock detection switch LH signal/ON or OFF

ON: Front door LH unlocked

OFF: Front door LH locked

-

FR Door Lock Pos

Front door unlock detection switch RH signal/ON or OFF

ON: Front door RH unlocked

OFF: Front door RH locked

-

RL-Door Lock Pos SW

Rear door unlock detection switch LH signal/ON or OFF

ON: Rear door LH unlocked

OFF: Rear door LH locked

-

RR-Door Lock Pos SW

Rear door unlock detection switch RH signal/ON or OFF

ON: Rear door RH unlocked

OFF: Rear door RH locked

-

Result

Result

Proceed to

OK

A

Front door unlock detection switch LH does not operate

B

Front door unlock detection switch RH 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

(See page 2016 MY Sienna [12/2015 - 08/2016]; LIGHTING (INT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE 2017 - 2020 MY Sienna [08/2016 -        ]; LIGHTING (INT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE )

C

GO TO STEP 4

D

GO TO STEP 6

E

GO TO STEP 9

B

2.

INSPECT FRONT DOOR LOCK ASSEMBLY LH

(a) Remove the front door lock assembly LH (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; DOOR LOCK: FRONT DOOR LOCK: REMOVAL 2018 - 2020 MY Sienna [11/2017 -        ]; DOOR LOCK: FRONT DOOR LOCK: REMOVAL ).

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

7 (E) - 8 (LSSR)

Locked

10 kΩ or higher

Unlocked

Below 1 Ω

Text in Illustration

*a

Component without harness connected

(Front Door Lock Assembly LH)

*b

Unlock

*c

Lock

(c) Reinstall the front door lock assembly LH.

NG

REPLACE FRONT DOOR LOCK ASSEMBLY LH

(See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL 2018 MY Sienna [11/2017 - 08/2018]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL 2019 - 2020 MY Sienna [08/2018 -        ]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL )

OK

3.

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

(a) Disconnect the H10 front door lock assembly LH connector.

(b) Disconnect the D13 main body ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

H10-8 (LSSR) - D13-7 (LSFL)

Always

Below 1 Ω

H10-8 (LSSR) - Body ground

Always

10 kΩ or higher

H10-7 (E) - Body ground

Always

Below 1 Ω

(d) Reconnect the main body ECU connector.

(e) Reconnect the front door lock assembly LH connector.

OK

REPLACE MAIN BODY ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.

INSPECT FRONT DOOR LOCK ASSEMBLY RH

(a) Remove the front door lock assembly RH (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; DOOR LOCK: FRONT DOOR LOCK: REMOVAL 2018 - 2020 MY Sienna [11/2017 -        ]; DOOR LOCK: FRONT DOOR LOCK: REMOVAL ).

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

7 (LSSR) - 8 (E)

Locked

10 kΩ or higher

Unlocked

Below 1 Ω

Text in Illustration

*a

Component without harness connected

(Front Door Lock Assembly RH)

*b

Unlock

*c

Lock

(c) Reinstall the front door lock assembly RH.

NG

REPLACE FRONT DOOR LOCK ASSEMBLY RH

(See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; DOOR LOCK: FRONT DOOR LOCK: REMOVAL 2018 - 2020 MY Sienna [11/2017 -        ]; DOOR LOCK: FRONT DOOR LOCK: REMOVAL )

OK

5.

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

(a) Disconnect the G10 front door lock assembly RH connector.

(b) Disconnect the D13 main body ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G10-7 (LSSR) - D13-18 (LSFR)

Always

Below 1 Ω

G10-7 (LSSR) - Body ground

Always

10 kΩ or higher

G10-8 (E) - Body ground

Always

Below 1 Ω

(d) Disconnect the main body ECU connector.

(e) Disconnect the front door lock assembly RH connector.

OK

REPLACE MAIN BODY ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.

INSPECT SLIDE DOOR HANDLE ASSEMBLY LH

(a) Remove the slide door handle assembly LH (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL 2018 MY Sienna [11/2017 - 08/2018]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL 2019 - 2020 MY Sienna [08/2018 -        ]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL ).

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 (LSSR) - 4 (E)

Locked

10 kΩ or higher

Unlocked

Below 1 Ω

Text in Illustration

*a

Component without harness connected

(Slide Door Handle Assembly LH)

*b

Lock

*c

Unlock

(c) Reinstall the slide door handle assembly LH.

NG

REPLACE SLIDE DOOR HANDLE ASSEMBLY LH

(See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL 2018 MY Sienna [11/2017 - 08/2018]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL 2019 - 2020 MY Sienna [08/2018 -        ]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL )

OK

7.

CHECK HARNESS AND CONNECTOR (SLIDE DOOR HANDLE - INSTRUMENT PANEL JUNCTION BLOCK AND BODY GROUND)

(a) Disconnect the J5 slide door handle assembly LH connector.

(b) Disconnect the 2H instrument panel junction block assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J5-1 (LSSR) - 2H-26

Always

Below 1 Ω

J5-1 (LSSR) - Body ground

Always

10 kΩ or higher

J5-4 (E) - Body ground

Always

Below 1 Ω

(d) Reconnect the instrument panel junction block assembly connector.

(e) Reconnect the slide door handle assembly LH connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

8.

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the instrument panel junction block assembly.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

2H-33 - 2I-5 (LSWL)

Always

Below 1 Ω

2H-33 - Body ground

Always

10 kΩ or higher

Text in Illustration

*a

Component without harness connected

(Instrument Panel Junction Block Assembly)

(c) Reinstall the instrument panel junction block assembly.

OK

REPLACE MAIN BODY ECU

NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

9.

INSPECT SLIDE DOOR HANDLE ASSEMBLY RH

(a) Remove the slide door handle assembly RH (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL 2018 MY Sienna [11/2017 - 08/2018]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL 2019 - 2020 MY Sienna [08/2018 -        ]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL ).

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

Standard Resistance:

Tester Connection

Door Lock Condition

Specified Condition

1 (LSSR) - 4 (E)

Locked

10 kΩ or higher

Unlocked

Below 1 Ω

Text in Illustration

*a

Component without harness connected

(Slide Door Handle Assembly RH)

*b

Lock

*c

Unlock

(c) Reinstall the slide door handle assembly RH.

NG

REPLACE SLIDE DOOR HANDLE ASSEMBLY RH

(See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL 2018 MY Sienna [11/2017 - 08/2018]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL 2019 - 2020 MY Sienna [08/2018 -        ]; DOOR LOCK: SLIDE DOOR LOCK: REMOVAL )

OK

10.

CHECK HARNESS AND CONNECTOR (SLIDE DOOR HANDLE - MAIN BODY ECU AND BODY GROUND)

(a) Disconnect the I5 slide door handle assembly RH connector.

(b) Disconnect the D14 main body ECU connector.

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

Standard Resistance:

Tester Connection (Symbols)

Condition

Specified Condition

I5-1 (LSSR) - D14-2 (LSWR)

Always

Below 1 Ω

I5-1 (LSSR) - Body ground

Always

10 kΩ or higher

I5-4 (E) - Body ground

Always

Below 1 Ω

(d) Reconnect the main body ECU connector.

(e) Reconnect the slide door handle assembly RH connector.

OK

REPLACE MAIN BODY ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR