Last Modified: 08-22-2025 6.11:8.1.0 Doc ID: RM0000003TPDFBB
Model Year Start: 2026 Model: GR Corolla Prod Date Range: [08/2025 -           ]
Title: G16E-GTS (ENGINE CONTROL): ECM: INSTALLATION; 2026 MY GR Corolla [08/2025 -        ]

INSTALLATION

CAUTION / NOTICE / HINT

NOTICE:

  • After replacing the ECM, make sure to perform vehicle identification number (VIN) registration, ECU configuration and update ECU security key.
  • After performing the vehicle identification number (VIN) registration, ECU configuration procedure and update ECU security key procedure, make sure to perform the initialization procedure for when the cable has been disconnected and reconnected to the negative (-) battery terminal.

PROCEDURE

1. INSTALL NO. 1 ECM BRACKET

(a) Install the No. 1 ECM bracket to the ECM with the screw.

Torque:

4.5 N·m {46 kgf·cm, 3 ft·lbf}

2. INSTALL NO. 2 ECM BRACKET

(a) Install the No. 2 ECM bracket to the ECM with the screw.

Torque:

4.5 N·m {46 kgf·cm, 3 ft·lbf}

3. INSTALL WIRE HARNESS CLAMP BRACKET

(a) Install the wire harness clamp bracket to the ECM with the bolt.

Torque:

4.5 N·m {46 kgf·cm, 3 ft·lbf}

4. INSTALL ECM

(a) Install the ECM with the bolt and nut.

Torque:

Bolt :

12.5 N·m {127 kgf·cm, 9 ft·lbf}

Nut :

8.0 N·m {82 kgf·cm, 71 in·lbf}

NOTICE:

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

(b) Connect the 3 ECM connectors and rotate the 3 levers to lock them.

NOTICE:

  • When connecting the ECM connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the ECM connectors.
  • Be sure to securely connect the ECM connectors.

(c) Engage the 4 clamps.

5. INSTALL AIR CLEANER WITH AIR CLEANER HOSE

Click here 2026 MY GR Corolla [08/2025 -        ]; G16E-GTS (EMISSION CONTROL): MONOLITHIC CONVERTER: INSTALLATION+

6. INSTALL INLET NO. 1 AIR CLEANER

7. INSTALL RADIATOR SUPPORT OPENING COVER

Click here 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2025 -        ]; EXTERIOR PANELS / TRIM: FRONT BUMPER (for Hatchback, GR): INSTALLATION+

8. INSTALL NO. 4 INLET AIR CLEANER

Click here 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2025 -        ]; EXTERIOR PANELS / TRIM: FRONT BUMPER (for Hatchback, GR): INSTALLATION+

9. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

Click here 2025 - 2026 MY GR Corolla [09/2024 -        ]; G16E-GTS (BATTERY / CHARGING): GENERATOR: INSTALLATION+

10. INSTALL DECK BOARD ASSEMBLY

Click here 2023 - 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING (for Hatchback): INSTALLATION+

11. VEHICLE IDENTIFICATION NUMBER (VIN) REGISTRATION

Click here 2023 - 2026 MY GR Corolla [09/2022 -        ]; G16E-GTS (ENGINE CONTROL): SFI SYSTEM: REGISTRATION+

12. ECU CONFIGURATION

Click here 2023 - 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: ECU CONFIGURATION

13. UPDATE ECU SECURITY KEY

Click here 2023 - 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: UPDATE ECU SECURITY KEY

14. PERFORM INITIALIZATION

Click here 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2025 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: WORK PROCEDURE

15. INITIALIZATION AFTER RECONNECTING BATTERY TERMINAL

HINT:

When disconnecting and reconnecting the battery, there is an automatic learning function that completes learning when the respective system is used.

Click here 2023 - 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; SETUP: WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL: AUTOMATIC LEARNING CHART