Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001G219
Model Year Start: 2019 Model: RAV4 HV Prod Date Range: [11/2018 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): Power Source Mode does not Change to ON (ACC); 2019 - 2024 MY RAV4 HV [11/2018 -        ]

Power Source Mode does not Change to ON (ACC)

DESCRIPTION

If the power switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode.

Related Data List and Active Test Items

Problem Symptom

Data List and Active Test

Power source mode does not change to on (ACC) but does change to on (IG)

Power Source Control

  • Power Supply Condition
  • ACC Relay Monitor

HINT:

Use this procedure to troubleshoot the malfunction that ACC mode of all the ECUs is not available.

When ACC mode of some ECUs is not available, check the ACC power source circuit related to the malfunctioning ECUs.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When using the Techstream with the power 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.
  • Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart.
  • If the smart key system (for Start Function) has been canceled, enable the system before performing troubleshooting.

    Click here 2019 MY RAV4 HV [11/2018 - 02/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): CUSTOMIZE PARAMETERS 2019 - 2020 MY RAV4 HV [02/2019 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): CUSTOMIZE PARAMETERS 2021 - 2022 MY RAV4 HV [08/2020 - 10/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): CUSTOMIZE PARAMETERS 2023 MY RAV4 HV [10/2022 - 10/2023]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): CUSTOMIZE PARAMETERS 2024 MY RAV4 HV [10/2023 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): CUSTOMIZE PARAMETERS

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Before replacing the certification ECU (smart key ECU assembly), refer to the Registration.

    Click here 2019 MY RAV4 HV [11/2018 - 10/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION 2020 - 2021 MY RAV4 HV [10/2019 - 12/2021]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION 2022 - 2024 MY RAV4 HV [12/2021 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION

  • 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 power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key, Power Source Control / Trouble Codes.

(e) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

Body Electrical > Power Source Control > Trouble Codes

Result

Proceed to

DTCs are not output

A

Smart key system (for Start Function) DTCs are output

B
B

GO TO DIAGNOSTIC TROUBLE CODE CHART 2019 MY RAV4 HV [11/2018 - 02/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): DIAGNOSTIC TROUBLE CODE CHART 2019 - 2024 MY RAV4 HV [02/2019 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): DIAGNOSTIC TROUBLE CODE CHART

A

2.

CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - POWER SUPPLY)

(a) Disconnect the instrument panel junction block assembly connectors.

*a

Front view of wire harness connector

(to Instrument Panel Junction Block Assembly)

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

4K-1 - Body ground

Always

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

*a

Component without harness connected

(Instrument Panel Junction Block Assembly)

-

-

(a) Remove the instrument panel junction block assembly.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2024 MY RAV4 RAV4 HV [10/2023 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

(b) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

(c) Connect a positive (+) lead from the auxiliary battery to terminal 4A-30.

(d) Connect a negative (-) lead from the auxiliary battery to terminal 4D-3.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

4K-1 - 4A-40

Always

Below 1 Ω
OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2024 MY RAV4 RAV4 HV [10/2023 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL