Toyota Venza manuals

Toyota Venza: 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.


NG

GO TO STEP 3


OK

2.

CHECK DTC OUTPUT

(a) Clear the DTC (See page ).


(b) Recheck for DTCs.

OK:

DTC B2341 or B2344 is not output.


OK

USE SIMULATION METHOD TO CHECK


NG

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.


NG

GO TO STEP 5


OK

4.

CHECK DTC OUTPUT

(a) Clear the DTC (See page ).


(b) Recheck for DTCs.

OK:

DTC B2341 or B2344 is not output.


OK

END


NG

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.

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

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

*1

Front view of wire harness connector

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

*2

Front view of wire harness connector

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

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))


OK

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


NG

REPLACE SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY)

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