Toyota Venza: Front Passenger Side Door ECU Communication Stop (B2322)

Toyota Venza Service Manual / Networking / Lin Communication System / Front Passenger Side Door ECU Communication Stop (B2322)

DESCRIPTION

This DTC is stored when LIN communication between the power window regulator motor assembly (for front passenger side) and main body ECU (driver side junction block assembly) stops for more than 10 seconds.

DTC No.	DTC Detection Condition	Trouble Area
B2322	No communication between the power window regulator motor assembly (for front passenger side) and main body ECU (driver side junction block assembly) for more than 10 seconds.	Power window regulator motor assembly (for Front passenger side) Main body ECU (Driver side junction block assembly) Wire harness or connector FR DOOR fuse

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When the power window regulator motor assembly (for front passenger side) is replaced or removed and reinstalled, it requires initialization (See page ).

When using the Techstream to troubleshoot with the ignition switch off:
Connect the Techstream to the DLC3, and turn the courtesy switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MOTOR - BATTERY AND BODY GROUND)

(a) Disconnect the H4 motor connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
H4-1 (GND) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Condition	Specified Condition
H4-2 (B) - Body ground	Always	11 to 14 V

Text in Illustration

*1	Front view of wire harness connector (to Power Window Regulator Motor Assembly (for Front Passenger Side))

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - POWER WINDOW REGULATOR MOTOR ASSEMBLY)

(a) Disconnect the D48 ECU connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
D48-10 (LIN2) - H4-9 (LIN)	Always	Below 1 Ω
D48-10 (LIN2) - Body ground	Always	10 kΩ or higher

Text in Illustration

Front view of wire harness connector

(to Main Body ECU (Driver Side Junction Block Assembly))

Front view of wire harness connector

(to Power Window Regulator Motor Assembly (for Front Passenger Side))

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for FRONT PASSENGER SIDE)

(a) Replace the power window regulator motor assembly (for front passenger side) (See page ).

4.	CHECK DTC OUTPUT

(a) Clear the DTC (See page ).

(b) Recheck for DTCs.

OK:

DTC B2322 is not output.

END (POWER WINDOW REGULATOR MOTOR ASSEMBLY WAS DEFECTIVE)

REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

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DESCRIPTION The main body ECU (driver side junction block assembly) monitors communication between all the ECUs connected to the door bus lines. When the main body ECU (driver side junction block ...

Rear Door RH ECU Communication Stop (B2323)

DESCRIPTION This DTC is stored when LIN communication between the power window regulator motor assembly (for rear RH side) and main body ECU (driver side junction block assembly) stops for more t ...

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