DTC B2220: Back Door Motor Circuit [11/2018 - 10/2023]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [11/2018 - 10/2023]

   Body Electrical > Back Door > Clear DTCs 

2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [11/2018 - 10/2023]

   Body Electrical > Back Door > Trouble Codes 

   OK

   DTC B2220 is not output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

Result: 

NG 

See step  2

1. Fully open the back door.
2. Disconnect the power back door unit assembly set LH connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Power Back Door Unit Assembly Set LH)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (BD+) - Body ground	Always	10 kΩ or higher
   2 (BD-) - Body ground	Always	10 kΩ or higher
   1 (BD+) - 2 (BD-)	Always	Below 1 MΩ

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE POWER BACK DOOR UNIT ASSEMBLY SET LH. Refer to  REMOVAL [11/2018 - 10/2023] 

Result: 

OK 

See step  3

1. Fully open the back door.
2. Disconnect the power back door unit assembly set RH connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component without harness connected (Power Back Door Unit Assembly Set RH)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 (BD+2) - Body ground	Always	10 kΩ or higher
   2 (BD-2) - Body ground	Always	10 kΩ or higher
   1 (BD+2) - 2 (BD-2)	Always	Below 1 MΩ

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE POWER BACK DOOR UNIT ASSEMBLY SET RH. Refer to  REMOVAL [11/2018 - 10/2023] 

Result: 

OK 

See step  4

1. Disconnect the R19 multiplex network door ECU connector.
2. Disconnect the R21 power back door unit assembly set LH connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R19-7 (BD+) - R21-1 (BD+)	Always	Below 1 Ω
   R19-6 (BD-) - R21-2 (BD-)	Always	Below 1 Ω
   R19-7 (BD+) or R21-1 (BD+) - Body ground	Always	10 kΩ or higher
   R19-6 (BD-) or R21-2 (BD-) - 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. Disconnect the R19 multiplex network door ECU connector.
2. Disconnect the R20 power back door unit assembly set RH connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R19-8 (BD+2) - R20-1 (BD+2)	Always	Below 1 Ω
   R19-9 (BD-2) - R20-2 (BD-2)	Always	Below 1 Ω
   R19-8 (BD+2) or R20-1 (BD+2) - Body ground	Always	10 kΩ or higher
   R19-9 (BD-2) or R20-2 (BD-2) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MULTIPLEX NETWORK DOOR ECU. Refer to  REMOVAL [11/2018 - 10/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR