Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001B7KN
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: LIGHTING (INT): LIGHTING SYSTEM (for HV Model): Power Switch Illumination Circuit; 2019 - 2022 MY Avalon HV [04/2018 -        ]

Power Switch Illumination Circuit

DESCRIPTION

The illuminated entry system controls the power switch illumination.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the certification ECU (smart key ECU assembly), refer to Registration.

Click here 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION 2021 - 2022 MY Avalon HV [08/2020 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Body Electrical > Smart Key > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Power/Engine SW Light

Power switch illumination

OFF or ON

-

Body Electrical > Smart Key > Active Test

Tester Display

Power/Engine SW Light

OK:

Power switch illumination comes on.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT POWER SWITCH

(a) Remove the power switch.

Click here 2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; A25A-FXS (STARTING): POWER SWITCH: REMOVAL 2022 MY Avalon HV [08/2021 -        ]; A25A-FXS (STARTING): POWER SWITCH: REMOVAL

(b) Inspect the power switch.

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; A25A-FXS (STARTING): POWER SWITCH: INSPECTION

NG

REPLACE POWER SWITCH 2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; A25A-FXS (STARTING): POWER SWITCH: REMOVAL 2022 MY Avalon HV [08/2021 -        ]; A25A-FXS (STARTING): POWER SWITCH: REMOVAL

OK

3.

CHECK HARNESS AND CONNECTOR (POWER SWITCH - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

(a) Disconnect the G40 certification ECU (smart key ECU assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G117-9 (SWIL) - G40-10 (SWIL)

Always

Below 1 Ω

G117-6 (AGND) - G40-11 (AGND)

Always

Below 1 Ω

G117-9 (SWIL) or G40-10 (SWIL) - Body ground

Always

10 kΩ or higher

G117-6 (AGND) or G40-11 (AGND) - Body ground

Always

10 kΩ or higher
OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2022 MY Avalon Avalon HV [08/2021 -        ]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR