Back Door Closer does not Operate: Procedure

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

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

OK: Go to next step 

1. Check that the power back door drive unit (power back door ECU) can be initialized, refer to INITIALIZATION .

NEXT: Go to next step 

1. Check that the back door closer system operation.

   OK

   Back door closer system operates normally.

NG → See step   4 

OK → END 

1. Check for the DTCs, refer to DTC CHECK / CLEAR .

   Result

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

B → See step   12 

C → See step   14 

A: Go to next step 

1. Remove the ECU IG NO. 1 fuse from the instrument panel junction block and ECU-B NO. 1 fuse from the engine room relay block.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   ECU IG NO. 1	Always	Below 1 Ω
   ECU-B NO. 1	Always	Below 1 Ω

NG → REPLACE FUSE 

OK: Go to next step 

1. Remove the fusible link block assembly.
   Fig 1: Identifying Fusible Link Block Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   A - B	Always	Below 1 Ω

   HINT: 

   PBD 30A fuse is located in the fusible link block assembly.

NG → REPLACE FUSIBLE LINK BLOCK ASSEMBLY 

OK: Go to next step 

1. Disconnect the O15 power back door ECU connector.
2. Measure the voltage according to the value(s) in the table below.
   Fig 2: Identifying O15 Power Back Door ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Condition	Specified Condition
   O15-8 (IG) - Body ground	Ignition switch ON	11 to 14 V
   O15-10 (ECUB) - Body ground	Always	11 to 14 V
   O15-12 (B) - Body ground	Always	11 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the O15 power back door ECU connector.
2. Measure the resistance according to the value(s) in the table below.
   Fig 3: Identifying O15 Power Back Door ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Condition	Specified Condition
   O15-11 (GND) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 4: Inspecting Back Door Lock

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the back door lock.
2. Apply battery voltage and check operation of the door lock motor.

   OK

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

3. Measure the resistance of the switch.

   Standard resistance

   Full-latch switch 

   Back door courtesy light switch 

   Tester Connection	Door Lock Latch Position	Specified Condition
   5 (HAF) - 4 (GND)	Over-latch	Below 1 Ω
   5 (HAF) - 4 (GND)	Open-latch	10 kΩ or higher
   5 (HAF) - 4 (GND)	Full-latch	10 kΩ or higher
   5 (HAF) - 4 (GND)	Half-latch	10 kΩ or higher

   Tester Connection	Door Lock Latch Position	Specified Condition
   3 (BDCY) - 4 (GND)	Open-latch	Below 1 Ω
   3 (BDCY) - 4 (GND)	Half-latch	Below 1 Ω
   3 (BDCY) - 4 (GND)	Full-latch	10 kΩ or higher
   3 (BDCY) - 4 (GND)	Over-latch	10 kΩ or higher

NG → See step   13 

OK: Go to next step 

1. Disconnect the T4 door lock connector.
   Fig 5: Identifying Back Door Lock And Power Back Door ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the O15 ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   T4-1 (DC+) - O15-2 (DC+)	Always	Below 1 Ω
   T4-2 (DC-) - O15-1 (DC-)	Always	Below 1 Ω
   T4-5 (HAF) - O15-22 (HAF)	Always	Below 1 Ω
   T4-6 (POS) - O15-24 (POS)	Always	Below 1 Ω
   T4-3 (BDCY) - O15-20 (FUL)	Always	Below 1 Ω
   T4-4 (GND) - Body ground	Always	Below 1 Ω
   T4-1 (DC+) - Body ground	Always	10 kΩ or higher
   T4-2 (DC-) - Body ground	Always	10 kΩ or higher
   T4-5 (HAF) - Body ground	Always	10 kΩ or higher
   T4-6 (POS) - Body ground	Always	10 kΩ or higher
   T4-3 (BDCY) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   11