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DTC    B2341    Sensor (Motor) Failure

DTC    B2344    Position Failure

for Preparation Click here


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 position 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)
  1. Sliding roof ECU (Sliding roof drive gear sub-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 sub-assembly)
  2. Sliding roof switch (Map light assembly)
  3. Wire harness or connector

WIRING DIAGRAM


B226505E02


INSPECTION PROCEDURE

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

  1. Recheck for DTCs.

    OK:
    DTC B2341 or B2344 is not output.



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

USE SIMULATION METHOD TO CHECK (Click here)  

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

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

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



NG
Go to step 5
OK


4.CHECK DTC OUTPUT

  1. Clear the DTC (Click here).

  1. Recheck for DTCs.

    OK:
    DTC B2341 or B2344 is not output.



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

END 

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


    B226506E04

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

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

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    R23-9 (CLS) - U13-2 (CLS)
    		Always
    		Below 1 Ω
    R23-9 (CLS) - Body ground
    		Always
    		10 kΩ or higher
    R23-7 (OPN) - U13-16 (OPN)
    		Always
    		Below 1 Ω
    R23-7 (OPN) - Body ground
    		Always
    		10 kΩ or higher
    U13-9 (GND1) - Body ground
    		Always
    		Below 1 Ω
    R23-2 (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 (Map Light Assembly))



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.INSPECT SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY)


    B226503E02

  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
    U13-2 (CLS) - U13-9 (GND1)
    		CLOSE switch is pressed
    		Below 1 Ω
    U13-2 (CLS) - U13-9 (GND1)
    		CLOSE switch is not pressed
    		10 kΩ or higher
    U13-16 (OPN) - U13-9 (GND1)
    		OPEN switch is pressed
    		Below 1 Ω
    U13-16 (OPN) - U13-9 (GND1)
    		OPEN switch is not pressed
    		10 kΩ or higher

    Text in Illustration 
    *1
    		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 SUB-ASSEMBLY) (Click here)