Back Door Entry Lock and Unlock Functions do not Operate [08/2015 - 08/2019]: Procedure

1. 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 (Refer to OPERATION CHECK [08/2015 - 08/2019] ).

   OK

   Door locks operate normally.

Result: 

NG 

Go to POWER DOOR LOCK CONTROL SYSTEM 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] )

Result: 

OK 

See step  2

1. When the door control switch on the multiplex network master switch assembly on the driver side door is operated, check that the Data List using the Techstream (Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2019] ).
   MAIN BODY
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Back Door Lock Pos SW	Back door lock / OFF or ON	ON: Back door unlocked OFF: Back door locked	-

   OK

   The Techstream display changes correctly in response to the operation of the back door lock assembly.

Result: 

NG 

Go to POWER DOOR LOCK CONTROL SYSTEM 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] )

Result: 

OK 

See step  3

1. Bring the electrical key transmitter approximately 0.3 m (0.98 ft.) from the electrical key antenna (outside luggage) and perform an entry back door unlock function check (Refer to OPERATION CHECK [08/2015 - 08/2016] , or refer to OPERATION CHECK [08/2016 - 08/2019] ).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *a	Approximately 0.3 m (0.98 ft.)

   NOTE:

   If the key is brought within 0.2 m (0.66 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 electric wave interference is high. Also, added vehicle components may cause electric wave interference. If installed, remove them and perform the operation check.

   OK

   Entry function operates normally.

Result: 

OK 

AFFECTED BY WAVE INTERFERENCE 

Result: 

NG 

See step  4

1. Check the following antenna in the key diagnostic mode (Refer to SYSTEM DESCRIPTION [08/2015 - 08/2016] , or refer to SYSTEM DESCRIPTION [08/2016 - 08/2019] ).
   1. Check the electrical key antenna (outside luggage).

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      TEXT IN ILLUSTRATION
      
      

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

      When the electrical key transmitter 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: 

OK 

REPLACE CERTIFICATION ECU 

(Refer to REMOVAL [08/2015 - 08/2019] )

Result: 

NG 

See step  5

1. Disconnect the R19 electrical key antenna (outside luggage) connector.
2. Disconnect the G27 certification ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R19-1 (CLG5) - G27-19 (CLG8)	Always	Below 1 Ω
   R19-2 (CLGB) - G27-20 (CG8B)	Always	Below 1 Ω
   R19-1 (CLG5) or G27-19 (CLG8) - Body ground	Always	10 kΩ or higher
   R19-2 (CLGB) or G27-20 (CG8B) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

1. Remove the electrical key antenna (outside luggage) (Refer to REMOVAL [08/2015 - 08/2019] ).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (CLG5) - 2 (CLGB)	Always	Below 1 Ω

Result: 

OK 

REPLACE CERTIFICATION ECU 

(Refer to REMOVAL [08/2015 - 08/2019] )

Result: 

NG 

REPLACE ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE) 

(Refer to REMOVAL [08/2015 - 08/2019] )