Access Key Lockout Protection Function in the Trunk does not Operate [11/2021 - ]: Procedure

1. Check that the trunk opens with the driver's seat trunk opener switch.

   Does it open normally?

   Result	Proceed to
   Yes	A
   No (Check the door lock circuit.)	B

Result: 

B 

CHECK THE DOOR LOCK CIRCUIT 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

Result: 

A 

See step  2

1. Check that the trunk opens when the luggage door opening switch of the electrical key transmitter sub-assembly is operated.

   Does it open normally?

   Result	Proceed to
   Yes	A
   No	B

Result: 

B 

See step  8

Result: 

A 

See step  3

1. Prepare all electrical key transmitter sub-assemblies registered to the vehicle.
2. Check that the trunk opens with each electrical key transmitter sub-assembly.

   Does it open normally?

   Result	Proceed to
   Yes	A
   No (Replace the electrical key transmitter sub-assembly.)	B

Result: 

B 

REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY 

Result: 

A 

See step  4

1. Disconnect the No. 3 indoor electrical key oscillator connector and the smart key ECU assembly connector.
2. Using a tester, measure the resistance between the No. 3 indoor electrical key oscillator connector and smart key ECU assembly connector.

   Connector & terminal

   O9-1 - F9-2 (CLG7)

   O9-3 - F9-1 (CG7B)

   Is the resistance less than 10 Ω?

   Result	Proceed to
   Yes	A
   No (Repair or replace the open circuit of harness.)	B

Result: 

B 

REPAIR OR REPLACE THE OPEN CIRCUIT OF HARNESS 

Result: 

A 

See step  5

1. Using a tester, measure the resistance between the smart key ECU assembly connector and chassis ground.

   Connector & terminal

   F9-2 (CLG7) - Chassis ground

   F9-1 (CG7B) - Chassis ground

   Is the resistance 10 kΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair or replace the short circuit of the harness.)	B

Result: 

B 

REPAIR OR REPLACE THE SHORT CIRCUIT OF THE HARNESS 

Result: 

A 

See step  6

1. Replace the No. 3 indoor electrical key oscillator with a new or properly functioning part.

   Refer to REMOVAL [11/2021 - ]

   Does it operate properly?

   Result	Proceed to
   Yes (The No. 3 indoor electrical key oscillator has a failure.)	A
   No	B

Result: 

A 

NO. 3 INDOOR ELECTRICAL KEY OSCILLATOR HAS A FAILURE 

Result: 

B 

See step  7

1. Turn the ignition switch to ON.
2. Using the GTS, check the following items in the [Keyless Access with Push Button Start] of [Keyless Access with Push Button Start(Collation)].

   Refer to DATA LIST / ACTIVE TEST [11/2021 - ]

   • Trunk transmitter - In the trunk
3. Hold the electrical key transmitter sub-assembly 1 m or more away from the luggage door opening switch assembly, and then come closer to within 0.8 m.

   Does the wireless door lock buzzer sound?

   Result	Proceed to
   Yes (The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.) HINT:  In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.	A
   No (Replace the smart key ECU assembly.)	B

Result: 

A 

THE CIRCUIT HAS RETURNED TO A NORMAL CONDITION AT THIS TIME 

The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

HINT: 

In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

Result: 

B 

REPLACE SMART KEY ECU ASSEMBLY 

Refer to REMOVAL [11/2021 - ]

1. Turn the ignition switch to ON.
2. Using the GTS, check the following items in the [Active Test] of [Body Control].

   Refer to DATA LIST / ACTIVE TEST [11/2021 - 10/2024] , or refer to DATA LIST / ACTIVE TEST [10/2024 - ]

   • Rear gate/Trunk UNLOCK output
3. Check that the trunk opens when [Rear gate/Trunk UNLOCK output] is output.

   Does it open normally?

   Result	Proceed to
   Yes	A
   No	B

Result: 

A 

See step  3

Result: 

B 

See step  9

1. Turn the ignition switch to OFF.
2. Disconnect the connector from instrument panel junction block assembly.
3. Disconnect the connector from the trunk lid lock assembly.
4. Measure the resistance between the instrument panel junction block assembly connector and trunk lid lock assembly connector.

   Connector & terminal

   2D-6 - T2-1

   Is the resistance less than 10 Ω?

   Result	Proceed to
   Yes	A
   No (Repair or replace the open circuit of harness.)	B

Result: 

B 

REPAIR OR REPLACE THE OPEN CIRCUIT OF HARNESS 

Result: 

A 

See step  10

1. Measure the resistance between the trunk lid lock assembly connector and chassis ground.

   Connector & terminal

   T2-2 - Chassis ground

   Is the resistance less than 10 Ω?

   Result	Proceed to
   Yes	A
   No (Repair or replace the open circuit of harness.)	B

Result: 

B 

REPAIR OR REPLACE THE OPEN CIRCUIT OF HARNESS 

Result: 

A 

See step  11

1. Check the trunk lid lock assembly

   Refer to INSPECTION [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes (Replace the main body (multiplex network body ECU).)	A
   No (Replace the trunk lid latch & actuator assembly.)	B

Result: 

A 

REPLACE MAIN BODY (MULTIPLEX NETWORK BODY ECU) 

Refer to REMOVAL [11/2021 - ]

Result: 

B 

REPLACE TRUNK LID LOCK ASSEMBLY 

Refer to REMOVAL [11/2021 - ]