Toyota Venza manuals

Toyota Venza: Back Door Closer Operation Malfunction (B2250)

Toyota Venza Service Manual / Door / Hatch / Back Door Closer System / Back Door Closer Operation Malfunction (B2250)

DESCRIPTION

The power back door ECU (power back door motor unit)*1 or back door closer ECU (multiplex network door ECU)*2 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)*1
  • Back door closer ECU (Multiplex network door ECU)*2
  • *1: w/ Power Back Door System
  • *2: w/o Power Back Door System

WIRING DIAGRAM


PROCEDURE

1.

INSPECT BACK DOOR LOCK ASSEMBLY (SECTOR SWITCH)

(a) Remove the back door lock assembly (See page ).


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


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

Text in Illustration

*1

Component without harness connected

(Back Door Lock Assembly)

*3

Sector Gear

*2

Sector Switch

-

-


NG

REPLACE BACK DOOR LOCK ASSEMBLY


OK

2.

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

(a) w/ Power Back Door System


(1) Disconnect the R1 back door lock assembly connector and L20 power back door ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R1-6 (DLSW) - L20-24 (POS)

Always

Below 1 Ω

R1-4 (E) - Body ground

Always

Below 1 Ω

R1-6 (DLSW) - Body ground

Always

10 kΩ or higher

Text in Illustration

*1

Front view of wire harness connector

(to Back Door Lock)

*2

Front view of wire harness connector

(to Power Back Door ECU)

(b) w/o Power Back Door System

(1) Disconnect the R1 back door lock assembly connector and L21 back door closer ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R1-6 (DLSW) - L21-7 (POS)

Always

Below 1 Ω

R1-4 (E) - Body ground

Always

Below 1 Ω

R1-6 (DLSW) - Body ground

Always

10 kΩ or higher

Text in Illustration

*1

Front view of wire harness connector

(to Back Door Lock)

*2

Front view of wire harness connector

(to Back Door Closer ECU)


Result

Proceed to

NG

A

OK (w/ Power Back Door System)

B

OK (w/o Power Back Door System)

C


A

REPAIR OR REPLACE HARNESS OR CONNECTOR


B

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


C

REPLACE BACK DOOR CLOSER ECU (MULTIPLEX NETWORK DOOR ECU)

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART HINT: If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the following "See p ...

Back Door cannot be Opened
DESCRIPTION When the back door cannot be opened, one of the following may be malfunctioning: 1) power back door ECU (power back door motor unit)*1 or back door closer ECU (multiplex network door ...

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