Inspection Procedure

1. Check that the rear power window RH manual UP/DOWN functions on multiplex network master switch operate normally.

   OK: 

   Remote UP/DOWN functions operate normally. 

NG: Go to step 2 

OK: REPLACE MULTIPLEX NETWORK SWITCH ASSEMBLY 

1. Select the ACTIVE TEST, use the intelligent tester to generate a control command, and then check the power window.

   Multiplex network switch assembly (rear RH) : 

   DIAGNOSIS NOTE CHART
   
   

   Item	Test Details	Diagnostic Note
   P/W UP/DOWN	Power Window UP/DOWN	-

   OK: 

   Rear power window RH operates normally. 

   CAUTION: Be careful to avoid injuries as this test causes vehicle parts to move.

NG: Go to step 3 

OK: REPLACE REAR MULTIPLEX NETWORK SWITCH ASSEMBLY RH 

1. Remove the RR DOOR RH, RH-IG and AM2 fuses from the cowl side junction block RH.
2. Remove the MPX-B and D/C CUT fuses from the engine room No. 1 relay block.
3. Measure the resistance of the fuses.

   Standard resistance: 

   Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to next step 

1. Disconnect the S1 switch connector.
2. Disconnect the O4 motor connector.
3. Measure the resistance of the wire harness side connectors.

Standard resistance 

Fig 1: Checking Wire Harness (Switch Assembly (Rear RH) - Rear Motor Assembly RH)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Disconnect the S1 switch connector.
2. Disconnect the O3 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   S1-7 (+B) - O3-5 (BDRJ)	Below 1 Ω
   S1-12 (E) - O3-2 (PWE)	Below 1 Ω.
   S1-7 (+B) or O3-5 (BDRJ) - Body ground	10 kΩ or higher
   S1-12 (E) or O3-2 (PWE) - Body ground	10 kΩ or higher

Fig 2: Checking Wire Harness (Switch Assembly (Rear RH) - Rear Door ECU RH)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Disconnect the O3 ECU connector.
2. Measure the voltage and resistance of the wire harness side connector.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   O3-4 (CPUB) - Body ground	Always	10 to 14 V
   O3-6 (BDR) - Body ground	Always	10 to 14 V
   O3-3 (SIG) - Body ground	Engine switch on (IG)	10 to 14 V

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   O3-1 (GND) - Body ground	Always	Below 1 Ω

Fig 3: Checking Wire Harness (Rear Door ECU RH - Battery And Body Ground)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Disconnect the O3 ECU connector.
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   O3-18 (SEL1) - O3-19 (SELE)	Below 1 Ω
   O3-18 (SEL1) or O3-19 (SELE) - Body ground	10 kΩ or higher

Fig 4: Checking Wire Harness (Rear Door ECU RH (Sel1 - Sele))

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Remove the motor.
2. Apply battery voltage to connector terminals 1 and 2.
   NOTE: Do not apply battery voltage to any terminals except terminals 1 and 2.
3. Check that the motor gear rotates smoothly as follows.

   OK 

   MEASUREMENT CONDITION CHART
   
   

   Measurement Condition	Specified Condition
   Battery positive (+) → 1 Battery negative (-) → 2	Motor gear rotates clockwise
   Battery positive (+) → 2 Battery negative (-) → 1	Motor gear rotates counterclockwise

Fig 5: Inspecting Rear Power Window Regulator Motor Assembly RH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH 

OK: Go to next step 

1. Temporarily replace the multiplex network switch assembly (rear RH) with a new or normally functioning one.
2. Check that the power window operates normally.

   OK: 

   Power window operates normally. 

NG: REPLACE REAR MULTIPLEX NETWORK DOOR ECU RH (REAR DOOR RH ECU) 

OK: END (MULTIPLEX NETWORK SWITCH ASSEMBLY (REAR RH) IS FAULTY)