Last Modified: 05-08-2025 6.11:8.1.0 Doc ID: RM1000000026LJQ
Model Year Start: 2023 Model: RAV4 Prod Date Range: [10/2022 - 10/2023]
Title: A25A-FKS (ENGINE CONTROL): ECM: REMOVAL; 2023 MY RAV4 [10/2022 - 10/2023]

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
*: When performing learning using the Techstream.

Click here 2023 MY RAV4 [10/2022 - 10/2023]; PARK ASSIST / MONITORING: PARKING SUPPORT BRAKE SYSTEM (for Gasoline Model): CALIBRATION

Battery terminal is disconnected/reconnected

Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes)

Stop and start system

2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: PRECAUTION

Perform steering sensor zero point calibration

Lane control system

2022 - 2025 MY RAV4 RAV4 HV [12/2021 -        ]; PRE-COLLISION: PRE-COLLISION SYSTEM: INITIALIZATION

Parking support brake system (for Gasoline model)*

Pre-collision system

Reset back door close position

Power back door system (for Gasoline model)

2019 - 2023 MY RAV4 [11/2018 - 10/2023]; DOOR / HATCH: POWER BACK DOOR SYSTEM (for Gasoline Model): INITIALIZATION

Back door lock initialization

Power door lock control system

2019 - 2025 MY RAV4 RAV4 HV [11/2018 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: INITIALIZATION

ECM

Perform Vehicle Identification Number (VIN) or frame number registration

DTC P063051 is output

2021 - 2025 MY RAV4 [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM: REGISTRATION

Code registration

Engine start function

w/ Smart Key System: 2022 - 2025 MY RAV4 [12/2021 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

w/o Smart Key System: 2023 - 2025 MY RAV4 [10/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (for Gasoline Model without Smart Key System): REGISTRATION

for UB80E:

  • If transaxle compensation code read from ECM
    • Perform reset memory
    • Transfer transaxle compensation code
    • Perform road test to allow ECM to learn
  • Large shift shock
  • Deterioration of fuel efficiency

for Initialization: 2019 - 2025 MY RAV4 [11/2018 -        ]; UB80E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: INITIALIZATION

for Registration: 2019 - 2025 MY RAV4 [11/2018 -        ]; UB80E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: REGISTRATION

for UB80E:

  • If transaxle compensation code not read from ECM
    • Perform reset memory
    • Reset transaxle compensation code
    • Perform road test to allow ECM to learn

for UB80F:

  • If transaxle compensation code read from ECM
    • Perform reset memory
    • Transfer transaxle compensation code
    • Perform road test to allow ECM to learn
  • Large shift shock
  • Deterioration of fuel efficiency

for Initialization: 2019 - 2025 MY RAV4 [11/2018 -        ]; UB80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: INITIALIZATION

for Registration: 2019 - 2025 MY RAV4 [11/2018 -        ]; UB80F (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: REGISTRATION

for UB80F:

  • If transaxle compensation code not read from ECM
    • Perform reset memory
    • Reset transaxle compensation code
    • Perform road test to allow ECM to learn

NOTICE:

  • If the ECM has been struck or dropped, replace it.
  • Perform Vehicle Identification Number (VIN) registration when replacing the ECM.

    Click here 2021 - 2025 MY RAV4 [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM: REGISTRATION

  • 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, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) battery terminal.

    Waiting Time before Disconnecting Cable from Negative (-) Battery Terminal

    System Name

    See Procedure

    Vehicle enrolled in Toyota Audio Multimedia system or safety connect system

    6 minutes

    Vehicle not enrolled in Toyota Audio Multimedia system and safety connect system

    1 minute

PROCEDURE

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

Click here 2023 MY RAV4 [10/2022 - 10/2023]; MAINTENANCE: A25A-FKS BATTERY: REMOVAL

2. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY

Click here 2023 MY RAV4 [10/2022 - 10/2023]; A25A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

3. REMOVE INLET AIR CLEANER ASSEMBLY

Click here 2021 - 2025 MY RAV4 [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): THROTTLE BODY: REMOVAL+

4. REMOVE AIR CLEANER ASSEMBLY WITH AIR CLEANER HOSE

Click here 2021 - 2025 MY RAV4 [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): THROTTLE BODY: REMOVAL+

5. REMOVE ECM

(a) Rotate the 3 levers while pushing the locks, 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.

(b) Remove the 2 bolts, nut and ECM.

NOTICE:

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

6. REMOVE NO. 1 ECM BRACKET

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

7. REMOVE NO. 2 ECM BRACKET

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