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. 

OK: REPLACE MULTIPLEX NETWORK SWITCH ASSEMBLY 

NG: GO TO Next Step 

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

   Multiplex network master switch (for front passenger side) 

   ACTIVE TEST REFERENCE
   
   

   Item	Test Details
   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.

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

NG: GO TO Next Step 

1. Remove the FR DOOR RH and RH-IG fuses from the main body ECU 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 M5 motor connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   Q6-6 (U) - M5-2 (U)	Below 1 Ω
   Q6-1 (O) - M5-1 (D)	Below 1 Ω
   Q6-6 (U) or M5-2 (U) - Body ground	10 kΩ or higher
   Q6-1 (D) or M5-1 (D) - Body ground	10 kΩ or higher

Fig 1: Checking Wire Harness (Power Window Switch - Power Window Motor)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO Next Step 

1. Disconnect the Q6 switch connector.
2. Disconnect the M4 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   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 M4-5 (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 (Power Window Switch - Front Door ECU RH)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR 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 

   STANDARD VOLTAGE REFERENCE
   
   

   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	Power switch ON (IG)	10 to 14 V

   Standard resistance 

   STANDARD RESISTANCE REFERENCE
   
   

   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 OR 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 AND SPECIFIED CONDITION
   
   

   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 FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH 

OK: GO TO Next Step 

1. Temporarily replace the multiplex network switch (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 (FRONT PASSENGER SIDE) IS FAULTY)