Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM1000000021J4L
Model Year Start: 2022 Model: RAV4 Prod Date Range: [12/2021 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): Immobiliser System does not Operate Properly; 2022 - 2024 MY RAV4 [12/2021 -        ]

Immobiliser System does not Operate Properly

DESCRIPTION

The immobiliser function compares the ID code that is registered to the certification ECU (smart key ECU assembly) with the ID code of the transponder chip that is embedded in the electrical key transmitter sub-assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
  • The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.

    Click here 2022 - 2023 MY RAV4 [12/2021 - 10/2023]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING 2024 MY RAV4 [10/2023 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

  • Before replacing the ID code box (immobiliser code ECU) or ECM, refer to the Registration.

    Click here 2022 - 2024 MY RAV4 [12/2021 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

  • Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart.
  • After completing repairs, confirm that the problem does not recur.
  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical or Powertrain / Smart Key or Engine / Trouble Codes.

(e) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

Powertrain > Engine > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B
B

GO TO DIAGNOSTIC TROUBLE CODE CHART 2022 MY RAV4 [12/2021 - 10/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): DIAGNOSTIC TROUBLE CODE CHART 2023 - 2024 MY RAV4 [10/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): DIAGNOSTIC TROUBLE CODE CHART

A

2.

READ VALUE USING TECHSTREAM (IMMOBILISER FUEL CUT STATUS)

(a) Enter the following menus: Powertrain / Engine / Data List.

(b) Read the Data List according to the display on the Techstream.

Powertrain > Engine > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Immobiliser Fuel Cut Status

Status of immobiliser fuel cut

OFF or ON

OFF: Fuel cut off

ON: Fuel cut on

-

Powertrain > Engine > Data List

Tester Display

Immobiliser Fuel Cut Status

OK:

OFF is displayed after the engine is started.

OK

GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

NG

3.

CHECK WHETHER ENGINE STARTS

(a) Check that the engine starts within 5 seconds of the engine switch being turned on (IG).

OK:

Engine starts normally.

OK

USE SIMULATION METHOD TO CHECK

NG

4.

CHECK ECM (TERMINAL EFII AND EFIO)

(a) Using an oscilloscope, check the waveform.

*a

Component with harness connected

(ID Code Box (Immobiliser Code ECU))

*b

Approximately 160 ms.

*c

Approximately 270 ms.

*d

Approximately 40 ms.

*e

Approximately 60 ms.

*f

IMO Waveform

*g

IMI Waveform

*h

Waveform A

*i

Waveform B

*j

Waveform C

*k

Waveform A (detail)

-

-

NOTICE:

The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

Measurement Condition:

Tester Connection

Condition

Tool Setting

Specified Condition

G57-3 (EFII) - Body ground

Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after cable disconnected and reconnected to battery

2 V/DIV., 500 ms./DIV.

Pulse generation

(See waveform B)

G57-4 (EFIO) - Body ground

Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after cable disconnected and reconnected to battery

2 V/DIV., 500 ms./DIV.

Pulse generation

(See waveform A and C)

Result

Proceed to

Normal waveform

A

Waveform A is not output, or has abnormal wavelength or shape

B

Waveform B is not output, or has abnormal wavelength or shape

C

Waveform C is not output, or has abnormal wavelength or shape

D
B

GO TO STEP 7

C

REPLACE ECM 2021 - 2022 MY RAV4 [08/2020 - 10/2022]; A25A-FKS (ENGINE CONTROL): ECM: REMOVAL 2023 MY RAV4 [10/2022 - 10/2023]; A25A-FKS (ENGINE CONTROL): ECM: REMOVAL 2024 MY RAV4 [10/2023 -        ]; A25A-FKS (ENGINE CONTROL): ECM: REMOVAL

D

GO TO STEP 8

A

5.

REGISTER ECU COMMUNICATION ID (ID CODE BOX (IMMOBILISER CODE ECU) - ECM)

(a) Register the ECU communication ID codes.

HINT:

Refer to Registration.

Click here 2022 - 2024 MY RAV4 [12/2021 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

NEXT

6.

CHECK WHETHER ENGINE STARTS

(a) Check that the engine starts.

OK:

Engine starts normally.

OK

END (COMMUNICATION ID WAS NOT REGISTERED)
NG

GO TO STEP 8

7.

CHECK HARNESS AND CONNECTOR (ID CODE BOX (IMMOBILISER CODE ECU) - ECM)

(a) Disconnect the G57 ID code box (immobiliser code ECU) connector.

(b) Disconnect the A24 ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

G57-3 (EFII) - A24-25 (IMO)

Always

Below 1 Ω

G57-4 (EFIO) - A24-26 (IMI)

Always

Below 1 Ω

G57-3 (EFII) or A24-25 (IMO) - Other terminals and body ground

Always

10 kΩ or higher

G57-4 (EFIO) or A24-26 (IMI) - Other terminals and body ground

Always

10 kΩ or higher
OK

GO TO STEP 8

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

(a) Replace the ID code box (immobiliser code ECU) with a new one.

Click here 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; THEFT DETERRENT / KEYLESS ENTRY: ID CODE BOX: REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; THEFT DETERRENT / KEYLESS ENTRY: ID CODE BOX: REMOVAL 2024 MY RAV4 RAV4 HV [10/2023 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ID CODE BOX: REMOVAL

NEXT

9.

REGISTER RECOGNITION CODE

(a) Register the recognition codes to the ECUs.

HINT:

Refer to Registration.

Click here 2022 - 2024 MY RAV4 [12/2021 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

NEXT

10.

REGISTER ECU COMMUNICATION ID

(a) Register the ECU communication ID codes.

HINT:

Refer to Registration.

Click here 2022 - 2024 MY RAV4 [12/2021 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

NEXT

11.

CHECK WHETHER ENGINE STARTS

(a) Check that the engine starts.

OK:

Engine starts normally.

OK

END (ID CODE BOX (IMMOBILISER CODE ECU) WAS DEFECTIVE)
NG

GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)