Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001HK1Z
Model Year Start: 2019 Model: RAV4 HV Prod Date Range: [02/2019 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, HV Model): Rear Door RH Entry Unlock Function does not Operate; 2019 - 2024 MY RAV4 HV [02/2019 -        ]

Rear Door RH Entry Unlock Function does not Operate

DESCRIPTION

If the entry unlock function does not operate for the rear door RH only, but the entry lock function operates, the request code is being transmitted properly from the rear door RH. In this case, there may be a problem related to the unlock sensor (connection between the certification ECU (smart key ECU assembly) and rear door outside handle assembly RH).

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.
  • The smart key system (for Entry 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 Entry Function) after confirming that the communication systems are functioning properly.

    Click here 2019 - 2021 MY RAV4 HV [02/2019 - 12/2021]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): HOW TO PROCEED WITH TROUBLESHOOTING 2022 - 2023 MY RAV4 HV [12/2021 - 10/2023]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): HOW TO PROCEED WITH TROUBLESHOOTING 2024 MY RAV4 HV [10/2023 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

  • Before replacing the certification ECU (smart key ECU assembly), refer to 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 repair, confirm that no DTCs are output.
  • Check that there are no electrical key transmitter sub-assemblies in the vehicle.

PROCEDURE

1.

CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) When the door control switch on the multiplex network master switch assembly is operated, check that the doors unlock and lock according to the switch operation.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: OPERATION CHECK

OK:

Door locks operate normally.

NG

GO TO POWER DOOR LOCK CONTROL SYSTEM

OK

2.

READ VALUE USING TECHSTREAM (RR-DOOR LOCK POS SW)

(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 / Main Body / Data List.

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

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

RR-Door Lock Pos SW

Rear door RH unlock detection switch signal

ON or OFF

ON: Rear door RH unlocked

OFF: Rear door RH locked

-

Body Electrical > Main Body > Data List

Tester Display

RR-Door Lock Pos SW

OK:

The Techstream display changes correctly in response to the lock/unlock operation of the rear door RH.

NG

GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit)

OK

3.

READ VALUE USING TECHSTREAM (PR-DOOR TOUCH SENSOR)

(a) Turn the power switch off.

*a

Unlock Sensor (Backside)

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

(c) Open and close the rear door RH.

(d) With the electrical key transmitter sub-assembly outside of the vehicle, press the lock switch of the electrical key transmitter sub-assembly to lock all of the doors.

(e) Hold the electrical key transmitter sub-assembly at the same height as the door outside handle assembly and approximately 0.3 m (0.984 ft.) from the rear door RH.

(f) Check that the LED of the electrical key transmitter sub-assembly blinks.

(g) Enter the following menus: Body Electrical / Smart Key / Data List.

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

(i) Touch the unlock sensor on the backside of the rear door outside handle assembly RH.

HINT:

When checking the operation of the unlock sensor again, make sure to perform the procedure from step (a).

Body Electrical > Smart Key > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Pr-Door Touch Sensor

Rear door RH touch sensor (unlock sensor)

ON or OFF

ON: Rear door RH touch sensor (unlock sensor) touched

OFF: Rear door RH touch sensor (unlock sensor) not touched

  • Displays whether the unlock sensor is on or off (even if the sensor is touched and contact is maintained, "ON" is displayed only momentarily).
  • Use this Data List item to help determine if there is an unlock sensor malfunction when the entry unlock function does not operate.

Body Electrical > Smart Key > Data List

Tester Display

Pr-Door Touch Sensor

OK:

The Techstream display changes correctly in response to the operation of the rear door outside handle assembly RH.

OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2024 MY RAV4 RAV4 HV [10/2023 -        ]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL

NG

4.

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - REAR DOOR OUTSIDE HANDLE ASSEMBLY RH)

(a) Disconnect the M7 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the K6 rear door outside handle assembly RH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

M7-9 (CLG4) - K6-6 (ANT1)

Always

Below 1 Ω

M7-8 (CG4B) - K6-4 (ANT2)

Always

Below 1 Ω

M7-9 (CLG4) or K6-6 (ANT1) - Other terminals and body ground

Always

10 kΩ or higher

M7-8 (CG4B) or K6-4 (ANT2) - Other terminals and body ground

Always

10 kΩ or higher

(d) Reconnect the K6 rear door outside handle assembly RH connector.

(e) Reconnect the M7 certification ECU (smart key ECU assembly) connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.

CHECK REAR DOOR OUTSIDE HANDLE ASSEMBLY RH (INPUT TO REAR DOOR RH UNLOCK SENSOR)

*a

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

*b

Waveform 1

*c

Unlock sensor not touched

*d

Unlock sensor touched

(a) Using an oscilloscope, check the waveform.

OK:

Tester Connection

Condition

Tool Setting

Specified Condition

M7-9 (CLG4) - G54-18 (E)

Procedure:

  1. Power switch off
  2. Electrical key transmitter sub-assembly brought outside vehicle
  3. All doors locked
  4. Electrical key transmitter sub-assembly not near the vehicle
  5. Rear door RH unlock sensor touched

5 V/DIV., 50 ms/DIV.

Pulse generation

(See waveform 1)

OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2024 MY RAV4 RAV4 HV [10/2023 -        ]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL

NG

REPLACE REAR DOOR OUTSIDE HANDLE ASSEMBLY RH 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; DOOR / HATCH: REAR DOOR: DISASSEMBLY 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; DOOR / HATCH: REAR DOOR: DISASSEMBLY 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; DOOR / HATCH: REAR DOOR: DISASSEMBLY 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; DOOR / HATCH: REAR DOOR: DISASSEMBLY 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; DOOR / HATCH: REAR DOOR: DISASSEMBLY 2024 MY RAV4 RAV4 HV [10/2023 -        ]; DOOR / HATCH: REAR DOOR: DISASSEMBLY