Back Door Entry Unlock Function does not Operate [08/2019 - ]: Procedure

1. Check that the function operates normally.

   Refer to OPERATION CHECK [08/2019 - ]

   Result

   Result	Proceed to
   Entry back door unlock function does not operate via back door outside handle.	A
   Entry back door unlock function does not operate via tail gate control switch assembly.	B
   Entry back door unlock function does not operate via back door outside handle and tail gate control switch assembly.	C

Result: 

B 

See step  7

Result: 

C 

See step  10

Result: 

A 

See step  2

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Customize Setting / Smart Key.
   SMART KEY
   
   

   Tester Display	Description	Default	Setting	ECU
   Back Door Opening Operation	Function that sets the back door when the user is carrying the electrical key transmitter sub-assembly and presses the back door outside handle.	Long	00:Long, 01:Twice, 10:OFF	Certification ECU (Smart key ECU assembly)

   Result

   Result	Proceed to
   Customize setting is "Long" or "Twice"	A
   Customize setting is "OFF"	B

Result: 

B 

PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters). Refer to  CUSTOMIZE PARAMETERS [08/2019 - ] 

Result: 

A 

See step  3

1. Enter the following menus: Body Electrical / Smart Key / Data List.
2. Read the Data List according to the display on the Techstream.
   BODY ELECTRICAL > SMART KEY > DATA LIST
   
   

   Tester Display	Measurement Item	Range	Normal Condition	Normal Condition
   Tr/B-Door Unlock SW	Back door outside handle	ON or OFF	ON: Back door outside handle pressed OFF: Back door outside handle not pressed	Displays whether the back door outside handle is on or off. Use this Data List item to help determine if there is a switch malfunction when the back door unlock function does not operate.

   OK

   The Techstream display changes correctly in response to the operation of the back door outside handle.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

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

Result: 

NG 

See step  4

1. Disconnect the V6 back door outside handle connector.
2. Disconnect the H198 certification ECU (smart key ECU assembly) connector.
3. Disconnect the V3 multiplex network door ECU connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   V6-1 - H198-5 (TSW5)	Always	Below 1 Ω
   V6-2 - V3-24 (HSW-)	Always	Below 1 Ω
   V6-1 or H198-5 (TSW5) - Other terminals and body ground	Always	10 kΩ or higher
   V6-2 or V3-24 (HSW-) - 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. Remove the back door outside handle.

   Refer to REMOVAL [08/2015 - ]

2. Inspect the back door outside handle.

   Refer to INSPECTION [08/2015 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE BACK DOOR OUTSIDE HANDLE. Refer to  REMOVAL [08/2015 - ] 

Result: 

OK 

See step  6

1. Using an oscilloscope, check the waveform.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a

   Replacement Component with harness connected (Certification ECU (Smart Key ECU Assembly))

   *b

   Waveform 1

   OK

   Tester Connection	Condition	Tool Setting	Specified Condition
   H198-5 (TSW5) - H199-11 (E)	Engine switch off	2 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 1)

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MULTIPLEX NETWORK DOOR ECU. Refer to  DISASSEMBLY [08/2019 - ] 

Result: 

NG 

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

1. When the tail gate switch assembly is operated, check that the back door window open according to the switch operation.

   Refer to OPERATION CHECK [08/2019 - ]

   OK

   Back door window operates normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [08/2019 - ] 

Result: 

NG 

See step  8

1. Disconnect the V24 tail gate control switch assembly connector.
2. Disconnect the H131 main body ECU (multiplex network body ECU) connector.
3. Disconnect the V3 multiplex network door ECU connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   V24-3 (SDN) - H131-28 (GOSW)	Always	Below 1 Ω
   V24-2 (E3) - V3-19 (KEYE)	Always	Below 1 Ω
   V24-3 (SDN) or H131-28 (GOSW) - Other terminals and body ground	Always	10 kΩ or higher
   V24-2 (E3) or V3-19 (KEYE) - 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  9

1. Remove the tail gate control switch assembly.

   Refer to REMOVAL [08/2019 - ]

2. Inspect the tail gate control switch assembly.

   Refer to INSPECTION [08/2019 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [08/2019 - ] 

Result: 

NG 

REPLACE TAIL GATE CONTROL SWITCH ASSEMBLY. Refer to  REMOVAL [08/2019 - ] 

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 [08/2019 - ]

   OK

   Door locks operate normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

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

Result: 

NG 

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