Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001HZ89
Model Year Start: 2020 Model: Corolla Prod Date Range: [03/2019 - 09/2022]
Title: 2ZR-FAE (ENGINE CONTROL): ECM: REMOVAL; 2020 - 2022 MY 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 ECM removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link
*1: w/ Smart Key System

*2: w/o Smart Key System

Battery terminal is disconnected/reconnected

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)

Replacement of ECM

Vehicle Identification Number (VIN) registration

MIL comes on

2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: REGISTRATION

ECU communication ID registration (Immobiliser system)

Engine start function

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

  1. Reset memory
  2. Deceleration sensor zero point calibration
  3. CVT oil pressure calibration
  • Large shift shock
  • Deterioration of fuel efficiency

2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]; K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION for K313

Replacement of ECM*1

Code registration (Smart Key System (for Gasoline Model, Start Function))
  • Wireless Door Lock Control System (for Gasoline Model with Smart Key System)
  • Smart Key System (for Gasoline Model, Entry Function)
  • Smart Key System (for Gasoline Model, Start Function)
  • Steering lock function

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

Replacement of ECM*2

Code registration (Immobiliser system)

Engine start

2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION 2021 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [04/2020 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION

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))
  • Perform the Vehicle Identification Number (VIN) registration when replacing the ECM.

    Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: REGISTRATION

PROCEDURE

1. PRECAUTION

NOTICE:

After turning the ignition 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 BATTERY TERMINAL

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

3. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE

Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): THROTTLE BODY: REMOVAL+

4. REMOVE RADIATOR SUPPORT OPENING COVER

Click here 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]; EXTERIOR PANELS / TRIM: FRONT BUMPER (for Sedan without Illumination): REMOVAL+

5. REMOVE INLET NO. 1 AIR CLEANER

Click here 2020 - 2022 MY Corolla [01/2019 - 09/2022]; 2ZR-FAE (COOLING): COOLING FAN MOTOR: REMOVAL+

6. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; MAINTENANCE: 2ZR-FAE AIR CLEANER FILTER ELEMENT: REMOVAL+

7. REMOVE AIR CLEANER CASE SUB-ASSEMBLY

(a) Remove the 2 bolts.

(b) Disengage the guide to remove the air cleaner case sub-assembly.

8. REMOVE ECM

(a) Disengage the claw and 2 guides to remove the No. 1 relay block cover from the No. 1 engine room relay block and No. 1 junction block assembly.

(b) Disconnect the 3 connectors from the No. 1 engine room relay block and No. 1 junction block assembly.

(c) Disengage the 2 claws to separate the engine wire from the No. 1 engine room relay block and No. 1 junction block assembly.

(d) Raise the 2 lock levers while pushing the locks on the levers, and disconnect the 2 ECM connectors.

NOTICE:

After disconnecting the ECM connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the ECM connectors.

(e) Remove the bolt and nut.

(f) Disengage the guide to remove the ECM.

NOTICE:

If the ECM has been struck or dropped, replace it.

9. REMOVE NO. 1 ECM BRACKET

(a) Remove the 2 screws and No. 1 ECM bracket from the ECM.

10. REMOVE NO. 2 ECM BRACKET

(a) Remove the 2 screws and No. 2 ECM bracket from the ECM.