Inspection Procedure

1. Check that the rear power window LH manual UP/DOWN functions on the multiplex network master switch operates 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 LH): 

   DIAGNOSIS NOTE CHART
   
   

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

   OK: 

   Rear power window LH operates normally. 

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

NG: Go to step 3 

OK: REPLACE MULTIPLEX NETWORK SWITCH ASSEMBLY 

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

   Standard resistance: 

   Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to next step 

1. Disconnect the S5 switch connector.
2. Disconnect the O9 motor connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   S5-6 (U) - O9-1 (U)	Below 1 Ω
   S5-1 (D) - O9-2 (D)	Below 1 Ω
   S5-6 (U) or O9-1 (U) - Body ground	10 kΩ or higher
   S5-1 (D) or O9-2 (D) - Body ground	10 kΩ or higher

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Disconnect the S5 switch connector.
2. Disconnect the O7 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   S5-7 (+B) - O7-5 (BDRJ)	Below 1 Ω
   S5-12 (E) - O7-2 (PWE)	Below 1 Ω
   S5-7 (+B) or O7-5 (BDRJ) - Body ground	10 kΩ or higher
   S5-12 (E) or O7-2 (PWE) - Body ground	10 kΩ or higher

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Disconnect the O7 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
   O7-4 (CPUB) - Body ground	Always	10 to 14 V
   O7-6 (BDR) - Body ground	Always	10 to 14 V
   O7-3 (SIG) - Body ground	Engine switch on (IG)	10 to 14 V

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   O7-1 (GND) - Body ground	Always	Below 1 Ω

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

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

Fig 4: Inspecting Rear Power Window Regulator Motor Assembly LH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH REAR 

OK: Go to next step 

1. Temporarily replace the multiplex network switch assembly (rear LH) 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 LH (REAR DOOR LH ECU) 

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