Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VKAB
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: DOOR / HATCH: BACK DOOR CLOSER SYSTEM: B2250; Back Door Closer Operation Malfunction; 2016 - 2020 MY Sienna [12/2015 -        ]

DTC

B2250

Back Door Closer Operation Malfunction

DESCRIPTION

The power back door ECU (power back door motor unit) receives signals from the latch switch, sector switch and back door courtesy switch, which are built into the back door lock. Based on these switch signals, the latch position of the back door lock is determined.

DTC No.

DTC Detection Condition

Trouble Area

B2250

While the back door closer is operating, a malfunction is detected in position information from the sector switch within a specified amount of time.
  • Back door lock assembly
  • Wire harness or connector
  • Power back door ECU (Power back door motor unit)

WIRING DIAGRAM

PROCEDURE

1.

INSPECT BACK DOOR LOCK ASSEMBLY (SECTOR SWITCH)

(a) Remove the back door lock assembly (See page 2016 - 2020 MY Sienna [12/2015 -        ]; DOOR LOCK: BACK DOOR LOCK: REMOVAL ).

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

Text in Illustration

*1

Sector Switch

*2

Sector Gear

*a

Component without harness connected

(Back Door Lock Assembly)

-

-

Standard Resistance:

Sector Switch

Tester Connection

Condition

Specified Condition

6 (DLSW) - 4 (E)

Sector gear in neutral position (Sector switch on)

Below 1 Ω

6 (DLSW) - 4 (E)

Sector gear not in neutral position (Sector switch off)

10 kΩ or higher
NG

REPLACE BACK DOOR LOCK ASSEMBLY

OK

2.

CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK - POWER BACK DOOR ECU)

(a) Disconnect the W11 back door lock assembly connector and K14 power back door ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

W11-6 (DLSW) - K14-24 (POS)

Always

Below 1 Ω

W11-4 (E) - Body ground

Always

Below 1 Ω

W11-6 (DLSW) - Body ground

Always

10 kΩ or higher
OK

REPLACE POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR