Back Door Entry Lock and Unlock Functions do not Operate [08/2019 - ]: Procedure

1. When the door control switch on the power window regulator master switch is operated, check that the doors unlock and lock according to the switch operation.

   Refer to OPERATION CHECK [08/2019 - 08/2022] , or refer to OPERATION CHECK [08/2022 - ]

   Result

   Result	Proceed to
   Door locks operate normally	A
   Door locks do not operate	B

Result: 

B 

GO TO POWER DOOR LOCK CONTROL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

Result: 

A 

See step  2

1. Bring the electrical key transmitter sub-assembly approximately 0.3 m (0.984 ft.) from the electrical key antenna (outside luggage) and perform an entry back door unlock function check.

   Refer to OPERATION CHECK [08/2019 - 08/2021] , or refer to OPERATION CHECK [08/2021 - 08/2022] , or refer to OPERATION CHECK [08/2022 - ]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Approximately 0.3 m (0.984 ft.)

   NOTE:

   If the electrical key transmitter sub-assembly is brought within 0.2 m (0.656 ft.) of the rear bumper, communication may not possible.

   HINT: 

   If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.

   Result

   Result	Proceed to
   Entry function does not operate normally	A
   Entry function operates normally	B

Result: 

B 

AFFECTED BY WAVE INTERFERENCE 

Result: 

A 

See step  3

1. Check the following antenna in key diagnostic mode.

   Refer to OPERATION CHECK [08/2019 - 08/2021] , or refer to OPERATION CHECK [08/2021 - 08/2022] , or refer to OPERATION CHECK [08/2022 - ]

   BODY ELECTRICAL > SMART KEY > UTILITY
   
   

   Tester Display
   Communication Check(Key Diag Mode)

2. Select either channel 1 or channel 2 and perform the key diagnostic mode inspection for each channel.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	0.7 to 1 m (2.30 to 3.28 ft.)

   HINT: 

   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.

   1. Check the electrical key antenna (outside luggage).

      When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the electrical key antenna (outside luggage), check that the wireless door lock buzzer sounds.

      OK

      Wireless door lock buzzer sounds.

   Result

   Result	Proceed to
   Diagnostic mode inspections fail	A
   Diagnostic mode inspections succeed	B

Result: 

B 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

Result: 

A 

See step  4

1. Disconnect the N26 electrical key antenna (outside luggage) connector.
2. Disconnect the F112 certification ECU (smart key ECU assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N26-1 (CLGB) - F112-1 (CLG8)	Always	Below 1 Ω
   N26-2 (ANTE8) - F112-2 (CG8B)	Always	Below 1 Ω
   N26-1 (CLGB) or F112-1 (CLG8) -Body ground	Always	10 kΩ or higher
   N26-2 (ANTE8) or F112-2 (CG8B) -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. Remove the electrical key antenna (outside luggage).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Electrical Key Antenna (Outside Luggage))

   Refer to REMOVAL [08/2015 - ]

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (CLGB) - 2 (ANTE8)	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

Result: 

NG 

REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE). Refer to  REMOVAL [08/2015 - ]