Rear Power Window LH does not Operate with Rear Power Window Switch LH: Procedure

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

   Result	Proceed to
   DTC is not output	A
   DTC is output	B

B → See step   8 

A: Go to next step 

1. Check if DTC B2312 is output.
   RESULT:
   
   

   Result	Proceed to
   B2312 is not output	A
   B2312 is output	B

B → See step   9 

A: Go to next step 

1. Use the Data List to check if the power window regulator motor is functioning properly.
   RL-DOOR MOTOR:
   
   

   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 LH switch 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 LH switch not operated	-

   OK

   Tester display changes normally when rear power window switch LH is operated.

NG → See step   4 

OK → See step   11 

1. Disconnect the O15 ECU connector.
   Fig 1: Checking Harness And Connector (Rear Door ECU LH - Rear Switch LH)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the O18 switch connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the O14 ECU connector.
   Fig 2: Checking Harness And Connector (Rear Door ECU LH - Rear Motor LH)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the O19 motor connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the O18 switch connector.
   Fig 3: Checking Harness And Connector (Rear Switch LH - Rear Motor LH)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the O19 motor connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 4: Inspecting Power Window Regulator Switch Assembly (For Rear LH)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard resistance

   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

NG → See step   10 

OK → See step   11