SLIDING ROOF SYSTEM, Diagnostic DTC:B2341, B2344

DESCRIPTION

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

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

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK SLIDING ROOF OPERATION

   
   

   1. Check the sliding roof auto operation Click here.

      OK
      Auto operation operates normally.

   
   

   NG

   INITIALIZE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU) Click here

   OK

2. CHECK DTC OUTPUT

   
   

   1. Clear the DTC Click here.

   2. Recheck for DTCs Click here.

      OK
      DTC B2341 or B2344 is not output.

   
   

   NG

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

   OK

   USE SIMULATION METHOD TO CHECK Click here

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

   
   

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

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

   
   

   NG

   CHECK HARNESS AND CONNECTOR (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY - MAP LIGHT ASSEMBLY AND BODY GROUND) Click here

   OK

4. CHECK DTC OUTPUT

   
   

   1. Clear the DTC Click here.

   2. Recheck for DTCs Click here.

      OK
      DTC B2341 or B2344 is not output.

   
   

   NG

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

   OK

   END (PROBLEM DUE TO INITIALIZATION FAILURE)

5. CHECK HARNESS AND CONNECTOR (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY - MAP LIGHT ASSEMBLY AND BODY GROUND)

   
   

   1. Disconnect the Y4 sliding roof drive gear sub-assembly (sliding roof ECU) connector.

   2. Disconnect the Y9 map light assembly (sliding roof switch) connector.

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

      Standard Resistance

      Tester Connection Condition Specified Condition Y9-2 (CLS) - Y4-5 (CLS) Always Below 1 Ω Y9-2 (CLS) - Body ground Always 10 kΩ or higher Y9-16 (OPN) - Y4-7 (OPN) Always Below 1 Ω Y9-16 (OPN) - Body ground Always 10 kΩ or higher Y9-15 (DOWN) - Y4-6 (DWN) Always Below 1 Ω Y9-15 (DOWN) - Body ground Always 10 kΩ or higher Y9-1 (UP) - Y4-4 (UP) Always Below 1 Ω Y9-1 (UP) - Body ground Always 10 kΩ or higher Y9-10 (GND) - Body ground Always Below 1 Ω Y4-12 (E) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

6. INSPECT MAP LIGHT ASSEMBLY (SLIDING ROOF SWITCH)

   
   
   1. 

      Text in Illustration

      *a	Component without harness connected (Map Light Assembly [Sliding Roof Switch])

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

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition 15 (DOWN) - 10 (GND) TILT DOWN switch is pressed Below 1 Ω 15 (DOWN) - 10 (GND) TILT DOWN switch is not pressed 10 kΩ or higher 1 (UP) - 10 (GND) TILT UP switch is pressed Below 1 Ω 1 (UP) - 10 (GND) TILT UP switch is not pressed 10 kΩ or higher 2 (CLS) - 10 (GND) SLIDE CLOSE switch is pressed Below 1 Ω 2 (CLS) - 10 (GND) SLIDE CLOSE switch is not pressed 10 kΩ or higher 16 (OPN) - 10 (GND) SLIDE OPEN switch is pressed Below 1 Ω 16 (OPN) - 10 (GND) SLIDE OPEN switch is not pressed 10 kΩ or higher

   
   

   NG

   REPLACE MAP LIGHT ASSEMBLY (SLIDING ROOF SWITCH) Click here

   OK

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