Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VKI1
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: LIGHTING (EXT): LIGHTING SYSTEM: Door Mirror Foot Light Circuit; 2016 - 2020 MY Sienna [12/2015 -        ]

Door Mirror Foot Light Circuit

DESCRIPTION

The outer mirror control ECU receives the signal from the main body ECU to control the door mirror foot light.

WIRING DIAGRAM

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM (FOOT LIGHT)

(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 / Mirror L or Mirror R / Active Test.

(e) Check that the door mirror foot lights operate.

Mirror L

Tester Display

Test Part

Control Range

Diagnostic Note

Foot Light

Door mirror foot light LH

ON/OFF

-

Mirror R

Tester Display

Test Part

Control Range

Diagnostic Note

Foot Light

Door mirror foot light RH

ON/OFF

-

Result

Result

Proceed to

OK

A

NG (Door mirror foot light LH does not come on)

B

NG (Door mirror foot light RH does not come on)

C

A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

(See page 2016 MY Sienna [12/2015 - 08/2016]; LIGHTING (EXT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE 2017 MY Sienna [08/2016 - 11/2017]; LIGHTING (EXT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE 2018 - 2020 MY Sienna [11/2017 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE )

C

GO TO STEP 4

B

2.

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH

(a) Inspect the outer rear view mirror assembly LH (See page 2016 - 2020 MY Sienna [12/2015 -        ]; LIGHTING (EXT): DOOR MIRROR FOOT LIGHT: INSPECTION ).

NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH

(See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; MIRROR (EXT): OUTER REAR VIEW MIRROR: REMOVAL 2018 - 2020 MY Sienna [11/2017 -        ]; MIRROR (EXT): OUTER REAR VIEW MIRROR: REMOVAL )

OK

3.

CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU LH - OUTER REAR VIEW MIRROR LH)

(a) Disconnect the H3 outer mirror control ECU assembly LH connector.

(b) Disconnect the H5 outer rear view mirror assembly LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

H3-2 (LP) - H5-5 (MLP)

Always

Below 1 Ω

H5-2 (-) - Body ground

Always

Below 1 Ω

H3-2 (LP) or H5-5 (MLP) - Body ground

Always

10 kΩ or higher

OK

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH

(a) Inspect the outer rear view mirror assembly RH (See page 2016 - 2020 MY Sienna [12/2015 -        ]; LIGHTING (EXT): DOOR MIRROR FOOT LIGHT: INSPECTION ).

NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

(See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; MIRROR (EXT): OUTER REAR VIEW MIRROR: REMOVAL 2018 - 2020 MY Sienna [11/2017 -        ]; MIRROR (EXT): OUTER REAR VIEW MIRROR: REMOVAL )

OK

5.

CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU RH - OUTER REAR VIEW MIRROR RH)

(a) Disconnect the G2 outer mirror control ECU assembly RH connector.

(b) Disconnect the G5 outer rear view mirror assembly RH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G2-2 (LP) - G5-5 (MLP)

Always

Below 1 Ω

G5-2 (-) - Body ground

Always

Below 1 Ω

G2-2 (LP) or G5-5 (MLP) - Body ground

Always

10 kΩ or higher

OK

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR