Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000028GEO
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: G16E-GTS (ENGINE CONTROL): ECM: REMOVAL; 2023 - 2025 MY GR Corolla [11/2022 -        ]

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/ Steering Lock Function

Replacement of ECM

Vehicle Identification Number (VIN) registration

MIL comes on

2023 - 2025 MY GR Corolla [09/2022 -        ]; G16E-GTS (ENGINE CONTROL): SFI SYSTEM: REGISTRATION

ECU configuration

-

2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: ECU CONFIGURATION

Update ECU security key

Vehicle Control History (RoB) are stored

2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: UPDATE ECU SECURITY KEY

Heavy Knock History

-

2023 - 2025 MY GR Corolla [09/2022 -        ]; G16E-GTS (ENGINE CONTROL): SFI SYSTEM: REGISTRATION

ECU communication ID registration (Immobiliser system)

Engine start function

2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

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*1

2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

NOTICE:

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

HINT:

When the cable is disconnected / reconnected to the battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when vehicle is driven

Effect/Inoperative Function when Necessary Procedure not Performed

Necessary Procedure

Link

Front Camera System

Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.

2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ADVANCED DRIVER ASSISTANCE SYSTEM: FRONT CAMERA SYSTEM: INITIALIZATION

Learning completes when vehicle is operated normally

Effect/Inoperative Function when Necessary Procedure not Performed

Necessary Procedure

Link

Power Door Lock Control System

  • Back door opener

Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.

2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: INITIALIZATION

PROCEDURE

1. PRECAUTION

NOTICE:

After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL: BEFORE DISCONNECTING BATTERY

2. REMOVE DECK BOARD ASSEMBLY

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING (for Hatchback): REMOVAL+

3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

Click here 2023 - 2025 MY GR Corolla [11/2022 -        ]; G16E-GTS (BATTERY / CHARGING): GENERATOR: REMOVAL+

4. REMOVE RADIATOR SUPPORT OPENING COVER

Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 08/2023]; EXTERIOR PANELS / TRIM: FRONT BUMPER (for Hatchback, GR): REMOVAL+ 2024 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2023 -        ]; EXTERIOR PANELS / TRIM: FRONT BUMPER (for Hatchback, GR): REMOVAL+

5. REMOVE INLET NO. 1 AIR CLEANER

Click here 2023 - 2025 MY GR Corolla [09/2022 -        ]; G16E-GTS (EMISSION CONTROL): MONOLITHIC CONVERTER: REMOVAL+

6. REMOVE AIR CLEANER WITH AIR CLEANER HOSE

Click here 2023 - 2025 MY GR Corolla [09/2022 -        ]; G16E-GTS (EMISSION CONTROL): MONOLITHIC CONVERTER: REMOVAL+

7. REMOVE ECM

(a) Disengage the 4 clamps.

(b) Rotate the 3 lock levers while pushing the locks on the levers, and disconnect the 3 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.

(c) Remove the bolt, nut and ECM.

NOTICE:

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

8. REMOVE WIRE HARNESS CLAMP BRACKET

(a) Remove the bolt and wire harness clamp bracket from the ECM.

9. REMOVE NO. 1 ECM BRACKET

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

10. REMOVE NO. 2 ECM BRACKET

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