DTC B2342: Switch Failure: Procedure

1. Use the DATA LIST to check if the sliding roof switch is functioning properly.

   Sliding roof ECU

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Open SW	Slide switch open signal/ON or OFF	ON: OPEN switch is pressed. OFF: OPEN switch is not pressed.	-
   Close SW	Slide switch close signal/ON or OFF	ON: CLOSE switch is pressed. OFF: CLOSE switch is not pressed.	-
   Up SW	Tilt switch up signal/ON or OFF	ON: UP switch is pressed. OFF: UP switch is not pressed.	-
   Down SW	Tilt switch down signal/ON or OFF	ON: DOWN switch is pressed. OFF: DOWN switch is not pressed.	-

   OK 

   Techstream displays as shown in the table according to the operation of each switch.

NG → See step   4 

OK: Go to next step 

1. Check the auto operation with the OPEN, CLOSE, UP and DOWN switches. Refer to ON-VEHICLE INSPECTION .

   OK

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

NG → See step   7 

OK: Go to next step 

1. Delete the DTCs. Refer to DIAGNOSIS SYSTEM .

NEXT → END 

1. Remove the roof console box assembly.
   Fig 1: Identifying Roof Console Box Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Switch Position	Specified Condition
   Q6-1 (CLS) - Q6-3 (GND)	CLOSE	Below 100 Ω
   Q6-2 (OPN) - Q6-3 (GND)	OPEN	Below 100 Ω
   Q6-4 (DOWN) - Q6-3 (GND)	DOWN	Below 100 Ω
   Q6-5 (UP) - Q6-3 (GND)	UP	Below 100 Ω
   Q6-1 (CLS) - Q6-3 (GND)	OPEN	1 kΩ or higher
   Q6-2 (OPN) - Q6-3 (GND)	CLOSE	1 kΩ or higher
   Q6-4 (DOWN) - Q6-3 (GND)	UP	1 kΩ or higher
   Q6-5 (UP) - Q6-3 (GND)	DOWN	1 kΩ or higher

OK → See step   10 

NG: Go to next step 

1. Temporarily replace the roof console box assembly (sliding roof control switch) with a new one or normally functioning one. Refer to REMOVAL - Step 1 .

NEXT: Go to next step 

1. Delete the DTCs. Refer to DIAGNOSIS SYSTEM .

NEXT → END 

1. Check that the sliding roof drive gear sub-assembly can be initialized. Refer to INITIALIZATION .

   OK

   Sliding roof drive gear sub-assembly can be initialized.

NG → See step   10 

OK: Go to next step 

1. Check the auto operation with the OPEN, CLOSE, UP and DOWN switches. Refer to ON-VEHICLE INSPECTION .

   OK

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

NG → REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU) 

OK: Go to next step 

1. Delete the DTCs. Refer to DIAGNOSIS SYSTEM .

NEXT → END 

1. Disconnect the Q13 and Q6 connectors.
   Fig 2: Identifying Q13 And Q6 Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   Q13-2 (E) - Q6-3 (GND)	Always	Below 1 Ω
   Q13-7 (OPN) - Q6-2 (OPN)	Always	Below 1 Ω
   Q13-8 (DWN) - Q6-4 (DOWN)	Always	Below 1 Ω
   Q13-9 (CLS) - Q6-1 (CLS)	Always	Below 1 Ω
   Q13-10 (UP) - Q6-5 (UP)	Always	Below 1 Ω
   Q6-1 (CLS) - Body ground	Always	10 kΩ or higher
   Q6-2 (OPN) - Body ground	Always	10 kΩ or higher
   Q6-3 (GND) - Body ground	Always	Below 1 Ω
   Q6-4 (DOWN) - Body ground	Always	10 kΩ or higher
   Q6-5 (UP) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF CONTROL ECU)