Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM1000000020BCQ
Model Year Start: 2022 Model: RAV4 Prod Date Range: [12/2021 -           ]
Title: A25A-FXS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]

INITIALIZATION

Inspection After Repair

Perform Learning Value Reset and Idle Learning after replacing or servicing parts related to engine operation. Details on procedures required are indicated by an asterisk and a number, and are explained in detail following the table.

Part Replaced

Engine Operation

Learning Value Reset*1

Idle Learning*2
  • Throttle body with motor assembly*3
  • Cleaning the deposits from the throttle body with motor assembly*3

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  • Cam timing control motor with EDU assembly
  • Removal and installation of a cam timing control motor with EDU assembly
  • Camshaft timing gear assembly
  • Removal and installation of a camshaft timing gear assembly

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Engine assembly

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  • Cylinder head sub-assembly
  • Camshaft (for intake or exhaust camshaft)
  • Camshaft timing exhaust gear assembly
  • Piston or piston ring
  • Mass air flow meter sub-assembly
  • Port fuel injector assembly
  • Direct fuel injector assembly
  • Fuel pump (for low pressure side)
  • Fuel pump assembly (for high pressure side)
  • Fuel pressure sensor (for low pressure side)
  • Fuel pressure sensor (for high pressure side)
  • Air fuel ratio sensor (sensor 1)
  • Air fuel ratio sensor (sensor 2)
  • Engine coolant temperature sensor
  • Spark plug
  • Ignition coil assembly
  • EGR valve assembly
  • Air leaks from intake system
  • Gas leaks from exhaust system

Confirm the following and perform Learning Value Reset and Idle Learning when one or more of the following conditions is met:

  1. A DTC was output before component replacement.
  2. An air fuel ratio learned value (A/F Learn Value Idle (Port) Bank 1, A/F Learn Value Low (Port) Bank 1, A/F Learn Value Mid No.1 (Port) Bank 1, A/F Learn Value Mid No.2 (Port) Bank 1, A/F Learn Value High (Port) Bank 1, A/F Learn Value Idle Bank 1, A/F Learn Value Low Bank 1, A/F Learn Value Mid No.1 Bank 1, A/F Learn Value Mid No.2 Bank 1, A/F Learn Value High Bank 1 displayed in the Data List was higher than +/- 20% before component replacement.
  3. Starting failure or rough idle occurs, or the engine stalls after component replacement.

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None of the conditions in the list above are met.

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Knock control sensor*4

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  • ○: Necessary.
  • -: Unnecessary.

NOTICE:

Engine learned values cannot be reset by disconnecting the cable from the negative (-) auxiliary battery terminal or removing the EFI-MAIN NO. 4 fuse.

  • *1: Learning Value Reset
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Utility / Learning Value Reset.
    5. Confirm the following conditions as instructed on the screen.
      • - ignition switch to ON
      • - Engine stopped
      • - Auxiliary battery voltage is higher than 9 V
    6. After confirming, select "Next" and initialize the learned value.

      HINT:

      If a message indicating learned value initialization failure is displayed on the screen, confirm the execution conditions, and perform learned value initialization again.

    7. After the completion of learned value initialization, confirm the air fuel ratio learned values (A/F Learn Value Idle (Port) Bank 1, A/F Learn Value Low (Port) Bank 1, A/F Learn Value Mid No.1 (Port) Bank 1, A/F Learn Value Mid No.2 (Port) Bank 1, A/F Learn Value High (Port) Bank 1, A/F Learn Value Idle Bank 1, A/F Learn Value Low Bank 1, A/F Learn Value Mid No.1 Bank 1, A/F Learn Value Mid No.2 Bank 1, A/F Learn Value High Bank 1) in the Data List.

      If 0 is displayed for all of the air fuel ratio learned values, initialization has completed correctly.

      If a value other than 0 is displayed for one of the air fuel ratio learned values, perform initialization again. After initialization, confirm the air fuel ratio learned values. If a value other than 0 is displayed, replace the ECM.

  • *2: Idle Learning
    1. Turn the ignition switch off and wait for at least 30 seconds.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Put the engine in Inspection Mode (Maintenance Mode).

      Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INSPECTION MODE PROCEDURE

    5. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.
    6. Start the engine and warm it up with the air conditioning and all accessories off, until the engine coolant temperature is 80°C (176°F) or higher.

      HINT:

      Learning starts when the engine coolant temperature is 80°C (176°F) or higher.

    7. Turn the ignition switch off, and then to ON (READY).
    8. With the shift lever in P, lightly depress the accelerator pedal to start the engine.
    9. Wait until the engine stops.

      HINT:

      The engine normally stops within 1 minute. However, when the HV battery SOC is low, the engine may remain running for approximately 3 minutes.

    10. Enter the following menus: Powertrain / Engine / Data List / ISC Learning.
    11. Confirm that "Compl" is displayed on the Techstream screen.
    12. Put the engine in Inspection Mode (Maintenance Mode).

      Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INSPECTION MODE PROCEDURE

    13. Start the engine.
    14. Enter the following menus: Powertrain / Engine / Data List / Engine Speed and Engine Independent.
    15. Check the Engine Speed when the value of Data List item Engine Independent is "Operate".

      Standard:

      Engine Idle Speed

      1050 to 1150 rpm

      HINT:

      • Be sure to perform this step with the A/C switch and all accessories off.
      • Make sure that the shift lever in P.
      • If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Check the Engine Speed after charge control is complete ("Operate" is displayed).
  • *3: Perform Learning Value Reset and Idle Learning after replacing the throttle body with motor assembly or cleaning deposits from the throttle body with motor assembly.

    After that, check the idle speed. If the idle speed is out of the specified range, perform the following procedure.

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    HINT:

    History information for driving and stopping is necessary to update Idle Learning.

    1. Turn the ignition switch to ON.
    2. Turn the Techstream on.
    3. Put the engine in Inspection Mode (Maintenance Mode).

      Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INSPECTION MODE PROCEDURE

    4. Warm up the engine (engine coolant temperature of 80°C (176°F) or higher) with the A/C switch and all accessories off [A].
    5. While the engine running, drive the vehicle at a speed of 10 km/h (6 mph) or more [B].

      HINT:

      If the engine stops, further depress the accelerator pedal to restart the engine.

    6. Idle the engine for 20 seconds or more [C].
    7. Repeat procedure [B] and [C].
    8. Enter the following menus: Powertrain / Engine / Data List / Engine Speed and Engine Independent.
    9. Check the Engine Speed when the value of Data List item Engine Independent is "Operate" [D].

      Standard:

      Engine Idle Speed

      1050 to 1150 rpm

      HINT:

      • Be sure to perform this step with the A/C switch and all accessories off.
      • Make sure that the shift lever is in P.
      • If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Check the Engine Speed after charge control is complete ("Operate" is displayed).
      • If the idle speed is still out of the specified range, repeat procedure [B] and [C] until the idle speed is within the specified range [E].
  • *4: Drive the vehicle for a short while after replacing the knock control sensor, and check if knocking occurs. If knocking occurs, drive the vehicle until knocking stops.

GRILLE SHUTTER SWITCH SPECIFICATION INFORMATION

HINT:

  • Perform Switch Specification Information after replacing the ECM.
  • Perform Switch Specification Information using Utility of the Techstream.

(a) Connect the Techstream to the DLC3.

(b) Turn the Techstream on.

(c) Enter the following menus: Powertrain / Engine / Utility / Switch Specification Information.

Powertrain > Engine > Utility

Tester Display

Switch Specification Information

(d) According to the prompts on the Techstream screen, perform Switch Specification Information.

(e) Enter the following menus: Powertrain / Engine / Data List / Status of Active Grille Air Shutter.

Powertrain > Engine > Data List

Tester Display

Status of Active Grille Air Shutter

(f) Using the Data List, confirm that the specification information matches that of the vehicle.

CHANGE GRILLE SHUTTER CONTROL MODE AND/OR PERFORM INITIALIZATION

In the following situations, it is necessary to change the grille shutter control mode and/or initialize the grille shutter system.

 

Change Control Mode

(Normal Mode → Maintenance Mode)

Change Control Mode

(Maintenance Mode → Normal Mode)

Initialize

Before removing the radiator shutter assembly

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When the radiator shutter assembly has been replaced with a new one

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After installing the radiator shutter assembly

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Before troubleshooting

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After troubleshooting

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NOTICE:

In order to ensure safety, before performing troubleshooting or removing the radiator shutter assembly, change the grille shutter control mode to maintenance mode.

HINT:

  • When the grille shutter system is in maintenance mode, the grille shutter will not operate when operation signals are received.
  • When driving the vehicle to change the grille shutter control mode and/or perform initialization, make sure the grille shutter system is in maintenance mode. Initialization cannot be performed and the grille shutter control mode cannot be changed by driving the vehicle if the grille shutter system is in normal mode.

WHEN USING TECHSTREAM

  1. Change the control mode to maintenance mode
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Utility / Switch Grille Shutter Control Mode.
    5. According to the display on the Techstream, change the grille shutter control mode from normal mode to maintenance mode.
  2. Change the control mode to normal mode
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Utility / Switch Grille Shutter Control Mode.
    5. According to the display on the Techstream, change the grille shutter control mode from maintenance mode to normal mode.
  3. Initialize
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Utility / Grille Shutter Initialization / Initialization operation (Low Torque).
    5. According to the display on the Techstream, perform initialization.

WHEN DRIVING THE VEHICLE

  • Change the control mode to normal mode and initialize

    HINT:

    When changing the grille shutter control mode and/or performing initialization by driving the vehicle, the grille shutter control mode can only be changed and initialization can only be performed if the grille shutter system is in maintenance mode.

    1. Turn the ignition switch to ON (READY).
    2. Drive the vehicle at speed of 5 km/h (3 mph) or more. The grille shutter control mode will be changed and initialization (low torque) will be performed automatically when the vehicle speed exceeds 5 km/h (3 mph).