DTC B2342: Switch Failure [10/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Sliding Roof / Data List.
5. Read the Data List according to the display on the Techstream.
   SLIDING ROOF
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Open Switch Failure(Past)	Open switch failure signal (Past)/ON or OFF	ON: Sliding roof open switch failure signal (Past) OFF: No sliding roof open switch failure signal (Past)	-
   Close Switch Failure(Past)	Close switch failure signal (Past)/ON or OFF	ON: Sliding roof close switch failure signal (Past) OFF: No sliding roof close switch failure signal (Past)	-
   Up Switch Failure(Past)	Up switch failure signal (Past)/ON or OFF	ON: Sliding roof tilt up switch failure signal (Past) OFF: No sliding roof tilt up switch failure signal (Past)	-
   Down Switch Failure(Past)	Down switch failure signal (Past)/ON or OFF	ON: Sliding roof tilt down switch failure signal (Past) OFF: No sliding roof tilt down switch failure signal (Past)	-
   Open Switch Failure(Current)	Open switch failure signal (Current)/ON or OFF	ON: Sliding roof open switch failure signal (Current) OFF: No sliding roof open switch failure signal (Current)	-
   Close Switch Failure(Current)	Close switch failure signal (Current)/ON or OFF	ON: Sliding roof close switch failure signal (Current) OFF: No sliding roof close switch failure signal (Current)	-
   Up Switch Failure(Current)	Up switch failure signal (Current)/ON or OFF	ON: Sliding roof tilt up switch failure signal (Current) OFF: No sliding roof tilt up switch failure signal (Current)	-
   Down Switch Failure(Current)	Down switch failure signal (Current)/ON or OFF	ON: Sliding roof tilt down switch failure signal (Current) OFF: No sliding roof tilt down switch failure signal (Current)	-

   OK

   "OFF" appears on the Techstream screen.

Result: 

OK 

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) 

(Refer to REMOVAL [10/2014 - 10/2015] or REMOVAL [10/2015 - ] )

Result: 

NG 

See step  2

1. Disconnect the N4 sliding roof ECU (sliding roof drive gear assembly) connector.
2. Disconnect the N6 sliding roof switch (roof console box assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N4-7 (OPN) - Body ground	Always	10 kΩ or higher
   N4-6 (DWN) - Body ground	Always	10 kΩ or higher
   N4-5 (CLS) - Body ground	Always	10 kΩ or higher
   N4-4 (UP) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Remove the sliding roof switch (roof console box assembly) (Refer to REMOVAL [10/2014 - ] ).

   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
   5 (UP) - 1 (GND)	UP switch is pressed	Below 1 Ω
   5 (UP) - 1 (GND)	UP switch is not pressed	10 kΩ or higher
   4 (DOWN) - 1 (GND)	DOWN switch is pressed	Below 1 Ω
   4 (DOWN) - 1 (GND)	DOWN switch is not pressed	10 kΩ or higher
   3 (OPN) - 1 (GND)	OPEN switch is pressed	Below 1 Ω
   3 (OPN) - 1 (GND)	OPEN switch is not pressed	10 kΩ or higher
   2 (CLS) - 1 (GND)	CLOSE switch is pressed	Below 1 Ω
   2 (CLS) - 1 (GND)	CLOSE switch is not pressed	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Sliding Roof Switch (Roof Console Box Assembly))

Result: 

OK 

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) 

(Refer to REMOVAL [10/2014 - 10/2015] or REMOVAL [10/2015 - ] )

Result: 

NG 

REPLACE SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY) 

(Refer to REMOVAL [10/2014 - ] )