Inspection Procedure

1. Check that the manual UP/DOWN function of each switch operates normally.

   OK: 

   Manual UP/DOWN function operates normally. 

NG: OTHER PROBLEM 

OK: Go to next step 

1. Check that the AUTO UP/DOWN function of each switch operates normally.

   OK: 

   AUTO UP/DOWN function operates normally. 

NG: OTHER PROBLEM 

OK: Go to next step 

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

   Multiplex network master switch assembly 

   DIAGNOSIS NOTE CHART
   
   

   Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
   P P/W AUTO SW	Front passenger side power window switch auto UP/DOWN signal/ ON or OFF	ON: Front passenger side power window AUTO switch operates OFF: Front passenger side power window auto switch does not operate	-
   P P/W UP SW	Front passenger side power window switch UP signal/ ON or OFF	ON: Front passenger side power window manual UP switch operates OFF: Front passenger side power window manual UP switch does not operate	-
   P P/W DOWN SW	Front passenger side power window switch DOWN signal/ ON or OFF	ON: Front passenger side power window manual DOWN switch operates OFF: Front passenger side power window manual DOWN switch does not operate	-
   RL P/W AUTO SW	Rear power window LH switch auto UP/DOWN signal/ ON or OFF	ON: Rear power window LH AUTO switch operates OFF: Rear power window LH AUTO switch does not operate	-
   RL P/W UP SW	Rear power window LH switch UP signal/ ON or OFF	ON: Rear power window LH manual UP switch operates OFF: Rear power window LH manual UP switch does not operate	-
   RL P/W DOWN SW	Rear power window LH switch DOWN signal/ ON or OFF	ON: Rear power window LH manual DOWN switch operates OFF: Rear power window LH manual DOWN switch does not operate	-
   RR P/W AUTO SW	Rear power window RH switch auto UP/DOWN signal/ ON or OFF	ON: Rear power window RH AUTO switch operates OFF: Rear power window RH AUTO switch does not operate	-
   RR P/W UP SW	Rear power window RH switch UP signal/ ON or OFF	ON: Rear power window RH manual UP switch operates OFF: Rear power window RH manual UP switch does not operate	-
   RR P/W DOWN SW	Rear power window RH switch DOWN signal/ ON or OFF	ON: Rear power window RH manual DOWN switch operates OFF: Rear power window RH manual DOWN switch does not operate

   OK: 

   ON (power window regulator switch on master switch operates) appears on screen. 

NG:  Go to step  4

OK: REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 

1. Disconnect the M4, O7 and O3 ECU connectors.
2. Disconnect the Q6, S5 and S1 switch connectors.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance: 

   Front passenger side 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   M4-7 (MPX3) - Q6-4 (MPX1)	Below 1 Ω
   M4-7 (MPX3) or Q6-4 (MPX1) - Body ground	10 kΩ or higher

   Rear LH 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   O7-7 (MPX3) - S5-4 (MPX1)	Below 1 Ω
   O7-20 (PWSL) - S5-11 (SEL2)	Below 1 Ω
   O7-7 (MPX3) or S5-4 (MPX1) - Body ground	10 kΩ or higher
   O7-20 (PWSL) or S5-11 (SEL2) - Body ground	10 kΩ or higher

   Rear RH 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   O3-7 (MPX3) -S1-4 (MPX1)	Below 1 Ω
   O3-20 (PWSL) - S1-10 (SEL1)	Below 1 Ω
   O3-7 (MPX3) or S1-4 (MPX1) - Body ground	10 kΩ or higher
   O3-20 (PWSL) or S1-10 (SEL1) - Body ground	10 kΩ or higher

Fig 1: Checking Wire Harness (Multiplex Network Door ECU - Multiplex Network Switch Assembly)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

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

   Multiplex network master switch assembly 

   DIAGNOSIS NOTE CHART
   
   

   Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
   P/W LOCK SW	Power window LOCK switch signal ON/OFF	ON: Power window LOCK switch ON OFF: Power window LOCK switch OFF	-

NG:  Go to step  6

OK: REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 

1. Disconnect the Q13 switch connector.
2. Disconnect the Q6, S5 and S1 switch connectors.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance: 

   Front Passenger Side 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   Q13-6 (PWS) - Q6-9 (PCT)	Below 1 Ω
   Q13-6 (PWS) or Q6-9 (PCT) - Body ground	10 kΩ or higher

   Rear LH 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   Q13-6 (PWS) - S5-9 (PCT)	Below 1 Ω
   Q13-6 (PWS) or S5-9 (PCT) - Body ground	10 kΩ or higher

   Rear RH 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   Q13-6 (PWS) - S1-9 (PCT)	Below 1 Ω
   Q13-6 (PWS) or S1-9 (PCT) - Body ground	10 kΩ or higher

Fig 2: Checking Wire Harness (Master Switch - Switch))

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY