Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001GXJ7
Model Year Start: 2020 Model: GR Corolla Prod Date Range: [01/2019 - 09/2022]
Title: LIGHTING (INT): LIGHTING SYSTEM (for Gasoline Model): Engine Switch Illumination Circuit; 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2022]

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 2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION 2020 MY Corolla Corolla Hatchback GR Corolla [09/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION 2021 - 2022 MY Corolla Corolla Hatchback GR Corolla [04/2020 - 09/2022]; 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

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2.

INSPECT ENGINE SWITCH

(a) Remove the engine switch.

for M20A-FKS: Click here 2019 - 2025 MY Corolla Corolla Hatchback [06/2018 -        ]; M20A-FKS (STARTING): ENGINE SWITCH: REMOVAL

for 2ZR-FAE: Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (STARTING): ENGINE SWITCH: REMOVAL

(b) Inspect the engine switch.

for M20A-FKS: Click here 2019 - 2025 MY Corolla Corolla Hatchback [06/2018 -        ]; M20A-FKS (STARTING): ENGINE SWITCH: INSPECTION

for 2ZR-FAE: Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (STARTING): ENGINE SWITCH: INSPECTION

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REPLACE ENGINE SWITCH

for M20A-FKS: Click here 2019 - 2025 MY Corolla Corolla Hatchback [06/2018 -        ]; M20A-FKS (STARTING): ENGINE SWITCH: REMOVAL

for 2ZR-FAE: Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (STARTING): ENGINE SWITCH: REMOVAL

OK

3.

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

(a) Disconnect the I1 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

I35-5 (SWIL) - I1-10 (SWIL)

Always

Below 1 Ω

I35-3 (GND) - I1-11 (AGND)

Always

Below 1 Ω

I35-5 (SWIL) or I1-10 (SWIL) - Body ground

Always

10 kΩ or higher

I35-3 (GND) or I1-11 (AGND) - Body ground

Always

10 kΩ or higher
OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL

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REPAIR OR REPLACE HARNESS OR CONNECTOR