Key Luggage Compartment Lock-in Prevention Function does not Operate [01/2017 - 05/2023]: Procedure

1. Check that the entry luggage compartment door open function operates.

   Refer to OPERATION CHECK [01/2017 - 05/2023]

   Result

   Result	Proceed to
   Luggage compartment door open function operates normally	A
   Luggage compartment door open function does not operate normally	B

Result: 

B 

GO TO OTHER PROBLEM (Proceed to Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment). Refer to  Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment [01/2017 - ]  

Result: 

A 

See step  2

1. Bring the electrical key transmitter sub-assembly near the No. 1 indoor electrical key antenna assembly (inside luggage compartment), and check that the entry luggage compartment lock-in prevention function operates.
   NOTE:

   In order to prevent the electrical key transmitter sub-assembly from being locked inside the vehicle, perform this inspection with the window of a door open.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Inspection Point

   HINT: 

   • Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the No. 1 indoor electrical key antenna assembly (inside luggage compartment).
   • When the electrical key transmitter sub-assembly is brought near the No. 1 indoor electrical key antenna assembly (inside luggage compartment), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
   • If the operation check is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
   • There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
   • If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.

   Result

   Result	Proceed to
   Entry functions does not operate normally	A
   Entry functions operate normally	B

Result: 

B 

AFFECTED BY WAVE INTERFERENCE 

Result: 

A 

See step  3

1. Check the following antenna in key diagnostic mode.

   Body Electrical > Smart Access > Utility 

   Tester Display
   Communication Check(Key Diag Mode)

2. Select either channel 1 or channel 2 and inspect key diagnostic mode for each channel.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Inspection Point

   1. Check the No. 1 indoor electrical key antenna assembly (inside luggage compartment):

      When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless buzzer sounds.

      HINT: 

      • If the wireless buzzer sounds, it can be determined that the No. 1 indoor electrical key antenna assembly (inside luggage compartment) is operating normally.
      • If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.

   Result

   Result	Proceed to
   Wireless buzzer does not sound	A
   Wireless buzzer sounds	B

Result: 

B 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [01/2017 - 05/2023] 

Result: 

A 

See step  4

1. Disconnect the X23 certification ECU (smart key ECU assembly) connector.
2. Disconnect the b1 No. 1 indoor electrical key antenna assembly (inside luggage compartment) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   X23-11 (CLG7) - b1-1 (ANTE7)	Always	Below 1 Ω
   X23-10 (CG7B) - b1-3 (CLGB)	Always	Below 1 Ω
   X23-11 (CLG7) or b1-1 (ANTE7) - Other terminals and body ground	Always	10 kΩ or higher
   X23-10 (CG7B) or b1-3 (CLGB) - Other terminals and body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Reconnect the X23 certification ECU (smart key ECU assembly) connector.
2. Using an oscilloscope, check the waveform.

   OK

   Tester Connection	Condition	Tool Setting	Specified Condition
   b1-1 (ANTE7) - b1-3 (CLGB)	Procedure: All doors closed Power switch off Electrical key transmitter sub-assembly not inside vehicle Driver door outside handle back end not pressed → pressed	2 V/DIV., 500 ms./DIV.	Pulse generation (See Waveform 1)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to No. 1 Indoor Electrical Key Antenna Assembly (Inside Luggage Compartment))
   *b	Waveform 1
   *c	Driver door outside handle back end not pressed
   *d	Driver door outside handle back end pressed

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [01/2017 - 05/2023] 

Result: 

OK 

See step  6

1. Replace the No. 1 indoor electrical key antenna assembly (inside luggage compartment) with any of following parts.
   • New or known good No. 1 indoor electrical key antenna assembly (inside luggage compartment):

     Refer to REMOVAL [01/2017 - 05/2023]

   • Known good No. 1 indoor electrical key antenna assembly (front floor):

     Refer to REMOVAL [01/2017 - 05/2023]

   • Known good No. 1 indoor electrical key antenna assembly (rear floor):

     Refer to REMOVAL [01/2017 - 05/2023]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

1. Check that the entry luggage compartment lock-in prevention function operates normally.

   Refer to OPERATION CHECK [01/2017 - 05/2023]

   OK

   Entry luggage compartment lock-in prevention function operates normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COPMARTMENT) WAS DEFECTIVE) 

Result: 

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [01/2017 - 05/2023]