Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001AW9Q
Model Year Start: 2019 Model: Avalon Prod Date Range: [04/2018 - 08/2020]
Title: LIGHTING (INT): LIGHTING SYSTEM (for Gasoline Model): Engine Switch Illumination Circuit; 2019 - 2020 MY Avalon [04/2018 - 08/2020]

Engine Switch Illumination Circuit

DESCRIPTION

The illuminated entry system controls the engine 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 [04/2018 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine 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

Engine switch illumination

OFF or ON

-

Body Electrical > Smart Key > Active Test

Tester Display

Power/Engine SW Light

OK:

Engine switch illumination comes on.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT ENGINE SWITCH

(a) Remove the engine switch.

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (STARTING): ENGINE SWITCH: REMOVAL

(b) Inspect the engine switch.

Click here 2019 - 2022 MY Avalon [04/2018 -        ]; 2GR-FKS (STARTING): ENGINE SWITCH: INSPECTION

NG

REPLACE ENGINE SWITCH

OK

3.

CHECK HARNESS AND CONNECTOR (ENGINE 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

G41-9 (SWIL) - G40-10 (SWIL)

Always

Below 1 Ω

G41-6 (AGND) - G40-11 (AGND)

Always

Below 1 Ω

G41-9 (SWIL) or G40-10 (SWIL) - Body ground

Always

10 kΩ or higher

G41-6 (AGND) or G40-11 (AGND) - Body ground

Always

10 kΩ or higher
OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR