Toyota Venza: Sensor (Motor) Failure (B2341,B2344)

Toyota Venza Service Manual / Sliding Roof / Convertible / Sliding Roof System / Sensor (Motor) Failure (B2341,B2344)

DESCRIPTION

When the sliding roof ECU (sliding roof drive gear sub-assembly) detects a motor malfunction and the sliding roof operation is stopped, DTC B2341 is output.

When the sliding roof ECU (sliding roof drive gear sub-assembly) detects a gear malfunction and the sliding roof operation is stopped, DTC B2344 is output.

DTC Code	DTC Detection Condition	Trouble Area
B2341	Sensor (motor) failure (When the ECU enters fail-safe mode due to a problem with the motor)	Sliding roof ECU (Sliding roof drive gear sub-assembly) Sliding roof switch (Roof console box assembly) Wire harness or connector
B2344	Position failure (When the ECU enters fail-safe mode due to a problem with the gear position)	Sliding roof ECU (Sliding roof drive gear sub-assembly) Sliding roof switch (Roof console box assembly) Wire harness or connector

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.
When the sliding roof ECU (sliding roof drive gear sub-assembly) is replaced or removed and reinstalled, it requires initialization (See page ).

PROCEDURE

1.	CHECK SLIDING ROOF OPERATION

(a) Check the sliding roof auto operation (See page ).

OK:

Auto operation operates normally.

GO TO STEP 3

2.	CHECK DTC OUTPUT

(a) Clear the DTC (See page ).

(b) Recheck for DTCs.

OK:

DTC B2341 or B2344 is not output.

USE SIMULATION METHOD TO CHECK

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

3.	INITIALIZE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

(a) Check that the sliding roof ECU (sliding roof drive gear sub-assembly) can be initialized (See page ).

OK:

Sliding roof ECU (sliding roof drive gear sub-assembly) can be initialized.

GO TO STEP 5

4.	CHECK DTC OUTPUT

(a) Clear the DTC (See page ).

(b) Recheck for DTCs.

OK:

DTC B2341 or B2344 is not output.

END

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

5.	CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU - SLIDING ROOF SWITCH)

(a) Disconnect the P6 switch connector.

(b) Disconnect the P4 ECU connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
P4-9 (CLS) - P6-2 (CLS)	Always	Below 1 Ω
P4-9 (CLS) - Body ground	Always	10 kΩ or higher
P4-7 (OPN) - P6-3 (OPN)	Always	Below 1 Ω
P4-7 (OPN) - Body ground	Always	10 kΩ or higher
P4-8 (DWN) - P6-4 (DOWN)	Always	Below 1 Ω
P4-8 (DWN) - Body ground	Always	10 kΩ or higher
P4-10 (UP) - P6-5 (UP)	Always	Below 1 Ω
P4-10 (UP) - Body ground	Always	10 kΩ or higher
P6-1 (GND) - Body ground	Always	Below 1 Ω
P4-2 (E) - Body ground	Always	Below 1 Ω

Text in Illustration

Front view of wire harness connector

(to Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly))

Front view of wire harness connector

(to Sliding Roof Switch (Roof Console Box Assembly))

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	INSPECT SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY)

(a) Remove the sliding roof switch (roof console box assembly) (See page ).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
P6-4 (DOWN) - P6-1 (GND)	TILT DOWN switch is pressed	Below 1 Ω
P6-4 (DOWN) - P6-1 (GND)	TILT DOWN switch is not pressed	10 kΩ or higher
P6-5 (UP) - P6-1 (GND)	TILT UP switch is pressed	Below 1 Ω
P6-5 (UP) - P6-1 (GND)	TILT UP switch is not pressed	10 kΩ or higher
P6-2 (CLS) - P6-1 (GND)	SLIDE CLOSE switch is pressed	Below 1 Ω
P6-2 (CLS) - P6-1 (GND)	SLIDE CLOSE switch is not pressed	10 kΩ or higher
P6-3 (OPN) - P6-1 (GND)	SLIDE OPEN switch is pressed	Below 1 Ω
P6-3 (OPN) - P6-1 (GND)	SLIDE OPEN switch is not pressed	10 kΩ or higher

Text in Illustration

*1	Component without harness connected (Sliding Roof Switch (Roof Console Box Assembly))

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

REPLACE SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY)

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