Inspection Procedure

1. Check that the front passenger side power window manual UP/DOWN function 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 (front passenger side): 

   DIAGNOSIS NOTE CHART
   
   

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

   OK: 

   Front passenger side power window operates normally. 

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

NG: Go to step 3 

OK: REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH (FRONT PASSENGER DOOR ECU) 

1. Remove the FR 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 Q6 switch connector.
2. Disconnect the N5 motor connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   Q6-6 (U) - N5-2 (U)	Below 1 Ω
   Q6-1 (D) - N5-1 (D)	Below 1 Ω
   Q6-6 (U) or N5-2 (U) - Body ground	10 kΩ or higher
   Q6-1 (D) or N5-1 (D) - Body ground	10 kΩ or higher

Fig 1: Checking Wire Harness (Switch Assembly (Front Passenger Side) - Front Motor Assembly RH (Front Passenger Side))

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Disconnect the Q6 switch connector.
2. Disconnect the N5 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   Q6-7 (+B) - M4-5 (BDRJ)	Below 1 Ω
   Q6-12 (E) - M4-2 (PWE)	Below 1 Ω
   Q6-7 (+B) or M4-S (BDRJ) - Body ground	10 kΩ or higher
   Q6-12 (E) or M4-2 (PWE) - Body ground	10 kΩ or higher

Fig 2: Checking Wire Harness (Switch Assembly (Front Passenger Side) - Front Door ECU RH)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Disconnect the M4 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
   M4-4 (CPUB) - Body ground	Always	10 to 14 V
   M4-6 (BDR) - Body ground	Always	10 to 14 V
   M4-3 (SIG) - Body ground	Engine switch on (IG)	10 to 14 V

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   M4-1 (GND) - Body ground	Always	Below 1 Ω

Fig 3: Checking Wire Harness (Door ECU Front RH - 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 clockwise
   Battery positive (+) → 2 Battery negative (-) → 1	Motor gear rotates counterclockwise

Fig 4: Inspecting Front Power Window Regulator Motor Assembly RH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY RH FRONT 

OK: Go to next step 

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

   OK: 

   Power window operates normally. 

NG: REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH (FRONT PASSENGER DOOR ECU) 

OK: END (MULTIPLEX NETWORK SWITCH ASSEMBLY (FRONT PASSENGER SIDE) IS FAULTY)