DTC    B2341    Sensor (Motor) Failure

DTC    B2344    Position Failure

for Preparation Click here


DESCRIPTION

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

DTC No.
DTC Detection Condition
Trouble Area
B2341
Sensor (motor) failure (When the ECU enters fail-safe mode due to a problem with the motor)
  1. Sliding roof ECU (Sliding roof drive gear assembly)
  2. Sliding roof switch (Map light assembly)
  3. Wire harness or connector
B2344
Position failure (When the ECU enters fail-safe mode due to a problem with the gear position)
  1. Sliding roof ECU (Sliding roof drive gear assembly)
  2. Sliding roof switch (Map light assembly)
  3. Wire harness or connector

WIRING DIAGRAM


B270917E01


INSPECTION PROCEDURE

NOTICE:
  1. When the sliding roof ECU (sliding roof drive gear assembly) is removed and reinstalled or replaced, it requires initialization (Click here).
  2. The sliding roof system uses the CAN and LIN communication systems. First, confirm that there are no malfunctions in the CAN and LIN communication systems. Refer to the How to Proceed with Troubleshooting procedure (Click here).

1.CHECK SLIDING ROOF OPERATION

  1. Check the sliding roof auto operation (Click here).

    OK:
    Auto operation operates normally.



NG
Go to step 3
OK


2.CHECK DTC OUTPUT

  1. Clear the DTCs (Click here).

  1. Recheck for DTCs.

    OK:
    DTC B2341 or B2344 is not output.



NG
REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) (Click here)
OK

USE SIMULATION METHOD TO CHECK (Click here)  

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

  1. Check that the sliding roof ECU (sliding roof drive gear assembly) can be initialized (Click here).

    OK:
    Sliding roof ECU (sliding roof drive gear assembly) can be initialized.



NG
Go to step 5
OK


4.CHECK DTC OUTPUT

  1. Clear the DTCs (Click here).

  1. Recheck for DTCs.

    OK:
    DTC B2341 or B2344 is not output.



NG
REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) (Click here)
OK

END (PROBLEM DUE TO INITIALIZATION FAILURE) 

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

  1. Disconnect the T6 sliding roof switch (map light assembly) connector.

  1. Disconnect the T10 sliding roof ECU (sliding roof drive gear assembly) connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    T10-9 (CLS) - T6-28 (CLS)
    		Always
    		Below 1 Ω
    T10-9 (CLS) - Body ground
    		Always
    		10 kΩ or higher
    T10-7 (OPN) - T6-27 (OPN)
    		Always
    		Below 1 Ω
    T10-7 (OPN) - Body ground
    		Always
    		10 kΩ or higher
    T10-8 (DWN) - T6-25 (DOWN)
    		Always
    		Below 1 Ω
    T10-8 (DWN) - Body ground
    		Always
    		10 kΩ or higher
    T10-10 (UP) - T6-24 (UP)
    		Always
    		Below 1 Ω
    T10-10 (UP) - Body ground
    		Always
    		10 kΩ or higher
    T6-3 (GND3) - Body ground
    		Always
    		Below 1 Ω
    T10-2 (E) - Body ground
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.INSPECT SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY)


    B260665E01

  1. Remove the sliding roof switch (map light assembly) (Click here).

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    25 (DOWN) - 3 (GND3)
    		TILT DOWN switch is pressed
    		Below 1 Ω
    25 (DOWN) - 3 (GND3)
    		TILT DOWN switch is not pressed
    		10 kΩ or higher
    24 (UP) - 3 (GND3)
    		TILT UP switch is pressed
    		Below 1 Ω
    24 (UP) - 3 (GND3)
    		TILT UP switch is not pressed
    		10 kΩ or higher
    28 (CLS) - 3 (GND3)
    		SLIDE CLOSE switch is pressed
    		Below 1 Ω
    28 (CLS) - 3 (GND3)
    		SLIDE CLOSE switch is not pressed
    		10 kΩ or higher
    27 (OPN) - 3 (GND3)
    		SLIDE OPEN switch is pressed
    		Below 1 Ω
    27 (OPN) - 3 (GND3)
    		SLIDE OPEN switch is not pressed
    		10 kΩ or higher

    Text in Illustration 
    *a
    		Component without harness connected
    (Sliding Roof Switch (Map Light Assembly))



NG
REPLACE SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY) (Click here)
OK

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) (Click here)