Power Back Door cannot be Operated Using Kick Sensor [10/2023 - ]: Procedure

1. Operate the multi-information display and check the customization status.

   Display	Description	Default	Setting	Relevant ECU
   System Settings	Function that enables or disables the power back door operation.	On	On or Off	Multiplex network door ECU
   Hands Free	Function that can be used to set the hands free power back door.	On	On or Off	Multiplex network door ECU

   Result

   Result	Proceed to
   Customization item is "On"	A
   Customization item is "Off"	B

Result: 

B 

PERFORM CUSTOMIZE SETTING 

Refer to CUSTOMIZE PARAMETERS [10/2023 - 11/2024] , or refer to CUSTOMIZE PARAMETERS [11/2024 - ]

Result: 

A 

See step  2

1. Check the power back door system.

   Result

   Result	Proceed to
   Power back door system does not operate normally	A
   Power back door system operates normally	B

Result: 

B 

GO TO POWER BACK DOOR CANNOT BE OPERATED FREQUENTLY 

Refer to Power Back Door cannot be Operated Frequently [10/2023 - ] 

Result: 

A 

See step  3

1. Clear the DTCs.

   Body Electrical > Back Door > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Turn the ignition switch to ON and wait for at least 10 seconds.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Check for DTCs.

   Body Electrical > Back Door > Trouble Codes 

   Result

   Result	Proceed to
   DTC is output	A
   DTC is not output	B

Result: 

A 

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer To  DIAGNOSTIC TROUBLE CODE CHART [10/2023 - 11/2024]  , or Refer To  DIAGNOSTIC TROUBLE CODE CHART [11/2024 - ] 

Result: 

B 

See step  6

1. Read the Data List according to the display on the GTS.

   Body Electrical > Back Door > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Kick Sensor Error	Status of the kick door control sensor error	Normal or Error	Normal: Kick door control sensor normal Error: Kick door control sensor abnormal	-

   Body Electrical > Back Door > Data List 

   Tester Display
   Kick Sensor Error

   OK

   On the GTS, Normal is displayed.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE KICK DOOR CONTROL SENSOR 

Refer to REMOVAL [10/2023 - ]

Result: 

OK 

See step  7

1. Read the Data List according to the display on the GTS.

   Body Electrical > Back Door > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Kick Sensor Detection	Status of the kick door control sensor detection	OFF or ON	OFF: Kick door control sensor not detecting a foot ON: Kick door control sensor detecting a foot	-

   Body Electrical > Back Door > Data List 

   Tester Display
   Kick Sensor Detection

   OK

   On GTS screen, item changes between ON and OFF according to above chart.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  9

Result: 

OK 

See step  8

1. Disconnect the Q7 kick door control sensor connector.
2. Disconnect the 4D instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Q7-6 (LIN) - 4D-17	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MULTIPLEX NETWORK DOOR ECU 

Refer to REMOVAL [10/2023 - ]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the kick door control sensor connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Kick Door Control Sensor)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Q7-7 (GND) - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   Q7-2 (B) - Body ground	Ignition switch off	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  10

1. Disconnect the Q7 kick door control sensor connector.
2. Disconnect the R26 multiplex network door ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Q7-3 (KSOT) - R26-12 (KSIN)	Always	Below 1 Ω
   Q7-3 (KSOT) or R26-12 (KSIN) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  11

1. Remove the multiplex network door ECU with the connector(s) still connected.

   Refer to REMOVAL [10/2023 - ]

2. Check the signal waveform according to the condition(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Multiplex Network Door ECU)
   *b	Waveform

   MEASUREMENT CONDITION
   
   

   Item	Condition
   Tester Connection	R26-12 (KSIN) - Body ground
   Tool Setting	2 V/DIV., 50 ms./DIV.
   Vehicle Condition	Ignition switch ON, kick door control sensor not detecting a foot

   OK

   The waveform displayed is as shown in the illustration.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE KICK DOOR CONTROL SENSOR 

Refer to REMOVAL [10/2023 - ]

Result: 

NG 

REPLACE MULTIPLEX NETWORK DOOR ECU 

Refer to REMOVAL [10/2023 - ]