DTC B2221: Jam Protection Pulse Sensor Circuit on Back Door [08/2019 - ]: Procedure

1. Initialize the back door power window regulator motor assembly (Refer to INITIALIZATION [08/2019 - ] ).

Result: 

NEXT 

See step  2

1. Clear the DTC (Refer to DTC CHECK / CLEAR [08/2019 - ] ).
2. Check for DTC (Refer to DTC CHECK / CLEAR [08/2019 - ] ).

   OK

   DTC is not output.

Result: 

OK 

END 

Result: 

NG 

See step  3

1. Disconnect the V3 back door ECU connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Back Door ECU)
   *b	Front view of wire harness connector (to Back Door Power Window Regulator Motor Assembly)

2. Disconnect the V4 back door power window regulator motor assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   V3-12 (DSV) - V4-4 (SSRB)	Always	Below 1 Ω
   V3-13 (DS1) - V4-3 (PLS1)	Always	Below 1 Ω
   V3-14 (DS2) - V4-5 (PLS2)	Always	Below 1 Ω
   V3-23 (DSG) - V4-6 (LMTE)	Always	Below 1 Ω
   V3-12 (DSV) - Body ground	Always	10 kΩ or higher
   V3-13 (DS1) - Body ground	Always	10 kΩ or higher
   V3-14 (DS2) - Body ground	Always	10 kΩ or higher
   V3-23 (DSG) - Body ground	Always	10 kΩ or higher

4. Reconnect the back door power window regulator motor assembly connector.
5. Reconnect the back door ECU connector.

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Replace back door power window regulator motor assembly (Refer to DISASSEMBLY [08/2019 - ] ).

Result: 

NEXT 

See step  5

1. Clear the DTC (Refer to DTC CHECK / CLEAR [08/2019 - ] ).
2. Check for DTC (Refer to DTC CHECK / CLEAR [08/2019 - ] ).

   OK

   DTC is not output.

Result: 

OK 

END 

Result: 

NG 

REPLACE BACK DOOR ECU 

(Refer to DISASSEMBLY [08/2019 - ] )