Back Door Closer does not Operate [08/2017 - 08/2019]: Procedure

1. Check if the back door is fully closed by hand.

Result: 

NG 

IMPROPER FIT OF BACK DOOR, OR A FOREIGN OBJECT IS STUCK IN BACK DOOR 

Result: 

OK 

See step  2

1. Check that the power back door drive unit (power back door ECU) can be initialized (Refer to INITIALIZATION [08/2015 - ] ).

Result: 

NEXT 

See step  3

1. Check that the back door closer system operates normally.

   Refer to OPERATION CHECK [08/2015 - ]

   OK

   Back door closer system operates normally.

Result: 

OK 

END 

Result: 

NG 

See step  4

1. Check for the DTCs (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).
   RESULT
   
   

   Result	Proceed to
   DTC is not output	A
   B2250 is output	B
   B2251 is output	C

Result: 

B 

GO TO DTC B2250 

(Refer to DTC B2250: Back Door Closer Operation Malfunction [08/2015 - ] )

Result: 

C 

GO TO DTC B2251 

(Refer to DTC B2251: Back Door Closer Switch Malfunction [08/2015 - 08/2019] )

Result: 

A 

See step  5

1. Disconnect the O30 power back door ECU connector.
2. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   O30-8 (IG) - Body ground	Ignition switch ON	11 to 14 V
   O30-10 (ECUB) - Body ground	Always	11 to 14 V
   O30-12 (B) - Body ground	Always	11 to 14 V

3. Reconnect the power back door ECU connector.

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

1. Disconnect the O30 power back door ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O30-11 (GND) - Body ground	Always	Below 1 Ω

3. Reconnect the power back door ECU connector.

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  7

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the back door lock (Refer to REMOVAL [08/2015 - ] ).
2. Apply battery voltage and check the operation of the door lock motor.

   Apply Battery Voltage

   Measurement Condition	Specified Condition
   Battery positive (+) → Terminal 2 (ACT-) Battery negative (-) → Terminal 1 (ACT+)	Latch turns to open-latch position
   Battery positive (+) → Terminal 1 (ACT+) Battery negative (-) → Terminal 2 (ACT-)	Latch turns to full-latch position

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

   Standard Resistance

   Latch Switch

   Tester Connection	Door Lock Latch Position	Specified Condition
   5 (CLS) - 3 (E)	Over-latch	Below 1 Ω
   5 (CLS) - 3 (E)	Open-latch	10 kΩ or higher
   5 (CLS) - 3 (E)	Full-latch	10 kΩ or higher
   5 (CLS) - 3 (E)	Half-latch	10 kΩ or higher

   Standard Resistance

   Back Door Courtesy Switch

   Tester Connection	Door Lock Latch Position	Specified Condition
   6 (S) - 3 (E)	Over-latch	10 kΩ or higher
   6 (S) - 3 (E)	Open-latch	Below 1 Ω
   6 (S) - 3 (E)	Full-latch	10 kΩ or higher
   6 (S) - 3 (E)	Half-latch	Below 1 Ω

Result: 

NG 

REPLACE BACK DOOR LOCK 

(Refer to REMOVAL [08/2015 - ] )

Result: 

OK 

See step  8

1. Disconnect the V5 back door lock connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the O30 ECU connector.
3. Disconnect the V2 and V3 ECU connectors.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   V5-2 (ACT-) - O30-2 (DC+)	Always	Below 1 Ω
   V5-1 (ACT+) - O30-1 (DC-)	Always	Below 1 Ω
   V5-5 (CLS) - O30-22 (HAF)	Always	Below 1 Ω
   V5-6 (S) - V3-10 (BDCY)	Always	Below 1 Ω
   V5-3 (E) - V3-20 (CTYE)	Always	Below 1 Ω
   V2-17 (OCTY) - O30-20 (FUL)	Always	Below 1 Ω
   O30-2 (DC+) - Body ground	Always	10 kΩ or higher
   O30-1 (DC-) - Body ground	Always	10 kΩ or higher
   O30-22 (HAF) - Body ground	Always	10 kΩ or higher
   O30-20 (FUL) - Body ground	Always	10 kΩ or higher

5. Reconnect the door lock and ECU connectors.

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  9

1. Temporarily replace the power back door drive unit (power back door ECU) with a new or normally functioning one (Refer to REMOVAL [08/2015 - ] ).

Result: 

NEXT 

See step  10

1. Check that the back door closer operates normally.

   Refer to OPERATION CHECK [08/2015 - ]

   OK

   It operates normally.

Result: 

OK 

END (POWER BACK DOOR UNIT [POWER BACK DOOR ECU] WAS DEFECTIVE) 

Result: 

NG 

REPLACE BACK DOOR ECU 

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