SLIDING ROOF SYSTEM, Diagnostic DTC:B2341, B2344

DESCRIPTION

When the sliding roof drive gear sub-assembly (sliding roof control ECU) detects malfunctions in the motor, and the sliding roof operation is stopped, DTC B2341 is output. When the sliding roof drive gear sub-assembly (sliding roof control ECU) detects malfunctions in the gear, and the sliding roof operation is stopped, DTC B2344 is output.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK SLIDING ROOF FUNCTION

   
   

   1. Check the auto operation with the OPEN, DOWN, CLOSE and UP switches Click here.

      OK
      Auto operation operates normally with OPEN, DOWN, CLOSE and UP switches.

   
   

   NG

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

   OK

2. RECHECK FOR DTC

   
   

   1. Delete the DTCs Click here.

   2. Recheck for DTCs Click here.

      Tech Tips

      If DTCs are detected frequently, replace the ECU.

      OK
      DTC is not output.

   
   

   NG

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

   OK

   END

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

   
   

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

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

   
   

   NG

   CHECK WIRE HARNESS (SLIDING ROOF CONTROL ECU - ROOF CONSOLE BOX ASSEMBLY) Click here

   OK

4. CHECK SLIDING ROOF FUNCTION

   
   

   1. Check the auto operation with the OPEN, DOWN, CLOSE and UP switches Click here.

      OK
      Auto operation operates normally with OPEN, DOWN, CLOSE and UP switches.

   
   

   NG

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

   OK

5. RECHECK FOR DTC

   
   

   1. Delete the DTCs Click here.

   2. Recheck for DTCs Click here.

      Tech Tips

      If DTCs are detected frequently, replace the ECU.

      OK
      DTC is not output.

   
   

   NG

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

   OK

   END

6. CHECK WIRE HARNESS (SLIDING ROOF CONTROL ECU - ROOF CONSOLE BOX ASSEMBLY)

   
   

   1. 

      Disconnect the Q12 and Q1 connectors.

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

      Standard resistance

      Tester Connection Condition Specified Condition Q12-2 (E) - Q1-2 (GND) Always Below 1 Ω Q12-7 (OPN) - Q1-4 (OPN) Always Below 1 Ω Q12-8 (DWN) - Q1-5 (DOWN) Always Below 1 Ω Q12-9 (CLS) - Q1-3 (CLS) Always Below 1 Ω Q12-10 (UP) - Q1-6 (UP) Always Below 1 Ω Q1-3 (CLS) - Body ground Always 10 kΩ or higher Q1-4 (OPN) - Body ground Always 10 kΩ or higher Q1-2 (GND) - Body ground Always Below 1 Ω Q1-5 (DOWN) - Body ground Always 10 kΩ or higher Q1-6 (UP) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

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

   
   

   1. 

      Remove the roof console box assembly.

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition Q1-3 (CLS) - Q1-2 (GND) CLOSE Below 100 Ω Q1-4 (OPN) - Q1-2 (GND) OPEN Below 100 Ω Q1-5 (DOWN) - Q1-2 (GND) DOWN Below 100 Ω Q1-6 (UP) - Q1-2 (GND) UP Below 100 Ω Q1-3 (CLS) - Q1-2 (GND) OPEN 1 kΩ or higher Q1-4 (OPN) - Q1-2 (GND) CLOSE 1 kΩ or higher Q1-5 (DOWN) - Q1-2 (GND) UP 1 kΩ or higher Q1-6 (UP) - Q1-2 (GND) DOWN 1 kΩ or higher

   
   

   NG

   REPLACE ROOF CONSOLE BOX ASSEMBLY (SLIDING ROOF SWITCH ASSEMBLY) Click here

   OK

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