Inspection Procedure

1. Check for LIN communication system DTCs related to the power window control system.

   OK: LIN communication system DTCs are not output. 

NG: GO TO LIN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

OK: Go to next step 

1. Check if DTC B2312 is output.

   OK: DTC B2312 is not output. 

NG: GO TO  DTC B2312  

OK: Go to next step 

1. Use the Data List to check if the power window regulator motor is functioning properly.

   RL-Door Motor: 

   DATA LIST TABLE
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   RL Door P/W Up SW	Rear power window LH manual UP switch signal / ON or OFF	ON: Rear power window LH manual UP switch operated OFF: Rear power window switch LH not operated	-
   RL Door P/W Down SW	Rear power window LH manual DOWN switch signal / ON or OFF	ON: Rear power window LH manual DOWN switch operated OFF: Rear power window switch LH not operated	-

   OK: Techstream display changes normally when rear power window switch LH is operated. 

NG: Go to step   4 

OK: REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH  (See REMOVAL  )

1. Disconnect the O15 ECU connector.
2. Disconnect the O18 switch connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION TABLE
   
   

   Tester Connection	Condition	Specified Condition
   O15-25 (SGND) - O18-5 (GND)	Always	Below 1 Ω
   O15-25 (SGND) or O18-5 (GND) - Body ground	Always	10 kΩ or higher

   Fig 1: Identifying O15 ECU Connector & O18 Switch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the O14 ECU connector.
2. Disconnect the O19 motor connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION TABLE
   
   

   Tester Connection	Condition	Specified Condition
   O14-5 (BDRJ) - O19-2 (B)	Always	Below 1 Ω
   O14-2 (PWE) - O19-1 (E)	Always	Below 1 Ω
   O14-5 (BDRJ) or O19-2 (B) - Body ground	Always	10 kΩ or higher
   O14-2 (PWE) or O19-1 (E) - Body ground	Always	10 kΩ or higher

   Fig 2: Identifying O14 ECU Connector & O19 Motor Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the O18 switch connector.
2. Disconnect the O19 motor connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION TABLE
   
   

   Tester Connection	Condition	Specified Condition
   O18-2 (UP) - O19-10 (UP1)	Always	Below 1 Ω
   O18-10 (DOWN) - O19-7 (DWN1)	Always	Below 1 Ω
   O18-2 (UP) or O19-10 (UP1) - Body ground	Always	10 kΩ or higher
   O18-10 (DOWN) or O19-7 (DWN1) - Body ground	Always	10 kΩ or higher

   Fig 3: Identifying O18 Switch Connector & O19 Motor Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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

   Standard resistance 

   RESISTANCE SPECIFICATION TABLE
   
   

   Tester Connection	Switch Condition	Specified Condition
   O18-2 (UP) - O18-5 (GND)	Manual UP operation	Below 1 Ω
   O18-10 (DOWN) - O18-5 (GND)	Manual DOWN operation	Below 1 Ω

   Fig 4: Identifying Rear Power Window Regulator Switch Assembly LH Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH  (See REMOVAL  )

OK: REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH  (See REMOVAL  )