Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001HZRK
Model Year Start: 2020 Model: GR Corolla Prod Date Range: [03/2019 - 09/2022]
Title: POWER DISTRIBUTION: INTEGRATION RELAY: REMOVAL; 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during the No. 1 integration relay removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced (for Gasoline Model)

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*1: for Hatchback

Disconnect cable from negative battery terminal

Perform steering sensor zero point calibration

Lane Control System (for Gasoline Model)

2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022]; PRE-COLLISION: PRE-COLLISION SYSTEM (for Gasoline Model): INITIALIZATION

Pre-collision System (for Gasoline Model)

Lighting System (w/ AFS)(EXT)

Initialize back door lock*1

Power Door Lock Control System (for Hatchback, Gasoline Model)

2019 - 2022 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 09/2022]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Hatchback, Gasoline Model): INITIALIZATION

NOTICE:

After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) battery terminal. (for Navigation System and Audio and Visual System (for Gasoline Model))

Necessary Procedure After Parts Removed/Installed/Replaced (for HV Model)

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function When Necessary Procedures are not Performed

Link

Disconnect cable from negative auxiliary battery terminal

Perform steering sensor zero point calibration

Lane Control System (for HV Model)

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; PRE-COLLISION: PRE-COLLISION SYSTEM (for HV Model): INITIALIZATION

Pre-collision System (for HV Model)

NOTICE:

After the power switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Audio and Visual System (for HV Model))

PROCEDURE

1. PRECAUTION

NOTICE:

After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

2. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

for M20A-FKS: Click here 2020 - 2022 MY Corolla Corolla Hatchback [03/2019 - 09/2022]; MAINTENANCE: M20A-FKS BATTERY: REMOVAL+

for 2ZR-FAE: Click here 2020 - 2022 MY Corolla [03/2019 - 09/2022]; MAINTENANCE: 2ZR-FAE BATTERY: REMOVAL+

for 2ZR-FXE: Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; MAINTENANCE: 2ZR-FXE AUXILIARY BATTERY: REMOVAL+

3. REMOVE NO. 1 RELAY BLOCK COVER

(a) Disengage the 3 claws to remove the No. 1 relay block cover as shown in the illustration.

*A

for Gasoline Model

*B

for HV Model

Remove in this Direction

4. REMOVE NO. 1 INTEGRATION RELAY

(a) Using a screwdriver, disengage the 2 claws.

Remove in this Direction

(b) Pull the No. 1 integration relay as shown in the illustration.

NOTICE:

When pulling the No. 1 integration relay, take care not to damage it.

(c) Disconnect the 2 connectors to remove the No. 1 integration relay.

NOTICE:

When pulling the No. 1 integration relay, take care not to damage it.