Rear Power Window LH Auto Up / Down Function does not Operate with Rear Power Window Switch LH: Wiring Diagram

1. Check that the manual UP/DOWN functions operate normally.

   OK: Manual UP/DOWN functions operate normally. 

NG : OTHER PROBLEM 

OK : GO TO NEXT STEP 

1. Turn the engine switch on (IG).
2. Operate the switch for 2 seconds or more.
3. Check the blinking pattern of the AUTO light. Compare the blinking pattern with the illustration below.
   Fig 2: Identifying Multiplex Network Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 3: AUTO Light Blinking Pattern Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result: 

   BLINKING PATTERN SPECIFICATION
   
   

   Blinking Pattern	Proceed to
   1 or 3	A
   2	B
   4	C

B : Go to step   4 

C : REPLACE MULTIPLEX NETWORK SWITCH ASSEMBLY (REAR LH) 

A : GO TO NEXT STEP 

1. Check that the power window operates normally after it is reset.

   OK: Power window operates normally. 

NG : Go to step 4 

OK : END 

1. Disconnect the T1 switch connector.
2. Disconnect the P4 power window motor connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFICATION CHART
   
   

   Tester Connection	Specified Condition
   T1-8 (VCC) - P4-4 (SSRB)	Below 1 Ω
   T1-2 (PLS1) - P4-3 (PLS)	Below 1 Ω
   T1-3 (PLS2) - P4-5 (PLS2)	Below 1 Ω
   T1-5 (SGND) - P4-6 (E)	Below 1 Ω
   T1-8 (VCC) or P4-4 (SSRB) - Body ground	10 kΩ or higher
   T1-2 (PLS1) or P4-3 (PLS) - Body ground	10 kΩ or higher
   T1-3 (PLS2) or P4-5 (PLS2) - Body ground	10 kΩ or higher
   T1-5 (SGND) or P4-6 (E) - Body ground	10 kΩ or higher

   Fig 4: Identifying Rear Motor Assembly LH Terminal Components

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK : REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH