DTC B2312: Power Window Switch Malfunction [08/2017 - ]: Procedure

1. Check for LIN communication system DTCs related to the power window control system (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] ).

   OK

   LIN communication system DTCs are not output.

Result: 

NG 

GO TO LIN COMMUNICATION SYSTEM 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] )

Result: 

OK 

See step  2

1. Check where DTC B2312 is output from.
   RESULT
   
   

   Result	Proceed to
   DTC B2312 output from power window regulator master switch assembly.	A
   DTC B2312 output from front power window regulator motor assembly LH.	B
   DTC B2312 output from front power window regulator motor assembly RH.	C

Result: 

B 

See step  4

Result: 

C 

See step  6

Result: 

A 

See step  3

1. Use the Data List to check if the master switch is functioning properly.
   MASTER SWITCH
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   D Door P/W Auto SW	Driver side power window auto UP/DOWN switch signal / ON or OFF	ON: Driver side switch of master switch operated OFF: Driver side switch of master switch not operated	-
   P Door P/W Auto SW	Front passenger side power window remote auto UP/DOWN switch signal / ON or OFF	ON: Front passenger side switch of master switch operated OFF: Front passenger side switch of master switch not operated	-
   P Door P/W Up SW	Front passenger side power window remote manual UP switch signal / ON or OFF	ON: Front passenger side switch of master switch operated OFF: Front passenger side switch of master switch not operated	-
   P Door P/W Down SW	Front passenger side power window remote manual DOWN switch signal / ON or OFF	ON: Front passenger side switch of master switch operated OFF: Front passenger side switch of master switch not operated	-
   Window Lock Switch Status	Power window LOCK switch / ON or OFF	ON: Power window lock switch in LOCK position OFF: Power window lock switch in UNLOCK position	-

   OK

   The Techstream display changes normally when master switch is operated.

Result: 

OK 

END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE) 

Result: 

NG 

REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY 

(Refer to REMOVAL [08/2017 - ] )

1. Use the Data List to check if the driver side motor is functioning properly.
   D-DOOR MOTOR
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   D Door P/W Auto SW	Driver side power window auto UP/DOWN switch signal / ON or OFF	ON: Driver side switch operated OFF: Driver side switch not operated	-
   D Door P/W Up SW	Driver side power window MANUAL UP switch signal / ON or OFF	ON: Driver side switch operated OFF: Driver side switch not operated	-
   D Door P/W Down SW	Driver side power window MANUAL DOWN switch signal / ON or OFF	ON: Driver side switch operated OFF: Driver side switch not operated	-

   OK

   The Techstream display changes normally when master switch is operated.

Result: 

OK 

END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE) 

Result: 

NG 

See step  5

1. Disconnect the N2 master switch connector.
2. Disconnect the N12 motor connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N2-4 (UP) - N12-10 (UP)	Always	Below 1 Ω
   N2-5 (DOWN) - N12-7 (DOWN)	Always	Below 1 Ω
   N2-4 (UP) - Body ground	Always	10 kΩ or higher
   N2-5 (DOWN) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH 

(Refer to REMOVAL [08/2017 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Use the Data List to check if the front passenger side motor is functioning properly.
   P-DOOR MOTOR
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   P Door P/W Auto SW	Front passenger side power window auto UP/DOWN switch signal / ON or OFF	ON: Power window regulator switch assembly operated OFF: Power window regulator switch assembly not operated	-
   P Door P/W Up SW	Front passenger side power window manual UP switch signal / ON or OFF	ON: Power window regulator switch assembly operated OFF: Power window regulator switch assembly not operated	-
   P Door P/W Down SW	Front passenger side power window manual DOWN switch signal / ON or OFF	ON: Power window regulator switch assembly operated OFF: Power window regulator switch assembly not operated	-

   OK

   The Techstream display changes normally when master switch is operated.

Result: 

OK 

END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE) 

Result: 

NG 

See step  7

1. Remove the power window regulator switch assembly (Refer to REMOVAL [08/2017 - ] ).
2. Inspect the power window regulator switch assembly (Refer to INSPECTION [08/2015 - ] ).

Result: 

NG 

REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY 

(Refer to REMOVAL [08/2017 - ] )

Result: 

OK 

See step  8

1. Disconnect the M10 switch connector.
2. Disconnect the M11 motor connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   M10-6 (UP) - M11-10 (UP)	Always	Below 1 Ω
   M10-7 (DOWN) - M11-7 (DOWN)	Always	Below 1 Ω
   M10-8 (AUTO) - M11-4 (AUTO)	Always	Below 1 Ω
   M10-6 (UP) - Body ground	Always	10 kΩ or higher
   M10-7 (DOWN) - Body ground	Always	10 kΩ or higher
   M10-8 (AUTO) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH 

(Refer to REMOVAL [08/2017 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR