Driver Side Power Window does not Operate with Power Window Master Switch: Wiring Diagram

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

   Multiplex network master switch assembly: 

   ITEM TESTER DIAGNOSIS CHART
   
   

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

   OK: Driver side power window operates normally. 

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

NG : Go to step 2 

OK : REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 

1. Check the DATA LIST for proper functioning of the power window master switch.

   Multiplex network master switch assembly 

   ITEM TESTER DIAGNOSIS CHART
   
   

   Item	Measurement Item/ Display (Range)	Normal Condition	Diagnostic Note
   P/W UP SW	Driver side power window UP switch signal/ ON or OFF	ON: Driver side power window switch UP operates OFF: Driver side power window switch UP does not operate	-
   P//W DOWN SW	Driver side power window DOWN switch signal/ ON or OFF	ON: Driver side power window switch DOWN operates OFF: Driver side power window switch DOWN does not operate	-

   OK: ON (switch operates) appears on screen. 

NG : REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 

OK : GO TO NEXT STEP 

1. Remove the FR DOOR LH, LH-IG fuses from the cowl side junction block LH.
2. Remove the AM1 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 R5 switch connector.
2. Disconnect the N5 motor connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFICATION CHART
   
   

   Tester Connection	Specified Condition
   R5-1 (DUP) - N5-2 (U)	Below 1 Ω
   R5-11 (DDN) - N5-1 (D)	Below 1 Ω
   R5-1 (DUP) or N5-2 (U) - Body ground	10 kΩ or higher
   R5-11 (DDN) or N5-1 (D) - Body ground	10 kΩ or higher

   Fig 3: Identifying Front Motor Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK : GO TO NEXT STEP 

1. Disconnect the R5 switch connector.
2. Disconnect the N3 ECU connector.
3. Measure the voltage and resistance of the wire harness side connectors.

   Standard voltage 

   TESTER CONNECTION SPECIFICATION CHART
   
   

   Tester Connection	Specified Condition
   R5-9 (CPUB) - Body ground	10 to 14 V

   Standard resistance 

   TESTER CONNECTION SPECIFICATION CHART
   
   

   Tester Connection	Specified Condition
   R5-10 (BDR1) - N3-5 (BDRJ)	Below 1 Ω
   R5-20 (SIG) - N3-10 (SIGJ)	Below 1 Ω
   R5-2 (E) - N3-2 (PWE)	Below 1 Ω
   R5-10 (BDR1) or N3-5 (BDRJ) - Body ground	10 kΩ or higher
   R5-20 (SIG) or N3-10 (SIGJ) - Body ground	10 kΩ or higher
   R5-2 (E) or N3-2 (PWE) - Body ground	10 kΩ or higher

   Fig 4: Identifying Master Switch Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK : GO TO NEXT STEP 

1. Disconnect the N3 ECU connector.
2. Measure the voltage and resistance of the wire harness side connector.

   Standard voltage 

   TESTER CONNECTION SPECIFICATION CHART
   
   

   Tester Connection	Condition	Specified Condition
   N3-4 (CPUB) - Body ground	Always	10 to 14 V
   N3-6 (BDR) - Body ground	Always	10 to 14 V
   N3-3 (SIG) - Body ground	Engine switch on (IG)	10 to 14 V

   Standard resistance 

   TESTER CONNECTION SPECIFICATION CHART
   
   

   Tester Connection	Condition	Specified Condition
   N3-1 (GND) - Body ground	Always	Below 1 Ω

   Fig 5: Measuring Voltage And Resistance Of Wire Harness Side Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK : GO TO NEXT STEP 

1. Disconnect the N4 ECU connector.
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION SPECIFICATION CHART
   
   

   Tester Connection	Specified Condition
   N4-11 (SEL1) - N4-12 (SELE)	Below 1 Ω
   N4-11 (SEL1) or D18-12 (SELE) - Body ground	10 kΩ or higher

   Fig 6: Measuring Resistance Of Wire Harness Side Connector

   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 

   TESTER CONNECTION SPECIFICATION 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 7: Inspecting Power Window Regulator Motor Assembly LH Front

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH 

OK : GO TO NEXT STEP 

1. Temporarily replace the multiplex network master switch assembly 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 LH (DRIVER DOOR ECU) 

OK : END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY IS FAULTY)