Terminals Of Ecu

1. Disconnect the ECU connectors D17, D18 and D19.
2. Check the voltage and continuity of each terminal of the vehicle's side connector.
   Fig 1: Inspecting Driver Door ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   ECU CONNECTORS VOLTAGE AND CONTINUITY CONDITION REFERENCE
   
   

   Symbols (Terminal No.)	Wiring color	Condition	Specified condition
   GND (D19-1) <--> Body ground	W-B <--> Body ground	Constant	Continuity
   CPUB (D19-4) <--> GND (D19-1)	L-O <--> W-B	Constant	10-14V
   SIG (D19-5) <--> GND (D19-1)	V-W <--> W-B	Ignition switch OFF <--> ON	0V <--> 10-14V
   BDR (D19-6) <--> GND (D19-1)	B-R <--> W-B	Constant	10-14V
   DN(D19-2) <--> UP(D19-3)	G <--> L	Constant	Continuity
   WLSW (D17-9) <--> GND (D19-1)	R <--> W-B	Ignition switch ON, window lock switch LOCK --> UNLOCK	0V --> 10-14V
   LMT (D19-10) <--> SGND (D19-11)	B-W <--> BR	Driver's door glass fully closed --> Opened by 4 mm or more	No continuity --> Continuity
   CTY (D17-27) <--> GND (D19-1)	R-W <--> W-B	Driver's door fully closed --> Opened	No continuity --> Continuity
   KUL (D18-4) <--> CPSE (D18-20)	L-W <--> R-L	Driver's door lock cylinder turned into neutral with key --> UNLOCK	No continuity --> Continuity
   KL (D18-13) <--> CPSE (D18-20)	L-B <--> R-L	Driver's door lock cylinder turned into neutral with key --> LOCK	No continuity --> Continuity
   DT1 (D17-5) <--> SC1 (D17-16)	G-R <--> L-R	Passenger's switch of power window master switch OFF --> DOWN	No continuity (4 kΩ)
   DT1 (D17-5) <--> SC2 (D17-15)	G-R <--> Y-R	Passenger's switch of power window master switch OFF --> UP	No continuity --> Continuity (4 kΩ)
   DT1 (D17-5) <--> SC3(D17-14)	G-R <--> L	Passenger's switch of power window master switch UP --> UP AUTO, DOWN --> DOWN AUTO	No continuity --> Continuity (4 kΩ)
   AUTO (D17-2) <--> GND (D19-1)	W-G <--> W-B	Passenger's switch of power window master switch UP --> UP AUTO, DOWN --> DOWN AUTO	No continuity --> Continuity
   MUP (D17-23) <--> GND (D19-1)	P-L <--> W-B	Driver's switch of power window master switch OFF --> UP	No continuity --> Continuity
   MDN (D17-25) <--> GND (D19-1)	V <--> W-B	Driver's switch of power window master switch OFF --> DOWN	No continuity --> Continuity

   HINT:

   If the value is not as specified, there may be a malfunction at the vehicle's side.

3. Connect the connector, and inspect the voltage between each terminal of the connector.

   Standard: 

   ECU CONNECTORS VOLTAGE AND CONTINUITY CONDITION REFERENCE
   
   

   Symbols (Terminal No.)	Wiring color	Condition	Specified condition
   DN (D19-2) <--> GND (D19-1)	G <--> W-B	Ignition switch ON, driver's switch of power window master switch OFF --> DOWN	0V --> 10-14V
   UP (D19-3) <--> GND (D19-1)	L <--> W-B	Ignition switch ON, driver's switch of power window master switch OFF --> UP
   WLS1 (D17-20) <--> GND (D19-1)	Y-B <--> W-B	Ignition switch ON, window lock switch LOCK --> UNLOCK

   HINT:

   If the value is not as specified, the driver door ECU or communication line may be defective.

1. Disconnect the door ECU connectors P9, P10 and P11.
2. Inspect the voltage and continuity of each terminal of the vehicle's side connector.
   Fig 2: Inspecting Passenger Door ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   ECU CONNECTORS VOLTAGE AND CONTINUITY CONDITION REFERENCE
   
   

   Symbols (Terminal No.)	Wiring color	Condition	Specified condition
   GND(P11-1) <--> Body ground	W-B <--> Body ground	Constant	Continuity
   CPUB(P11-4) <--> GND(P11-1)	L-O <--> W-B	Constant	10-14V
   SIG(P11-5) <--> GND(P11-1)	V-W <--> W-B	Ignition switch OFF --> ON	0V --> 10-14V
   BDR (P11-6) <--> GND (P11-1)	G-Y <--> W-B	Constant	10-14V
   DN(P11-2) <--> UP(P11-3)	G <--> L	Constant	Continuity
   WLSW (P9-9) <--> GND (P11-1)	Y-B <--> W-B	Ignition switch ON, window lock switch LOCK --> UNLOCK	0V --> 10-14V
   LMT(P11-10) <--> SGND(P11-11)	B-W <--> BR	Driver's door glass fully closed --> Opened by 4 mm or more	No continuity --> Continuity
   CTY (P9-27) <--> GND (P11-1)	R-W <--> W-B	Driver's door fully closed --> Opened	No continuity --> Continuity
   AUTO (P9-2) <--> GND (P11-1)	W-G <--> W-B	Passenger's switch of power window master switch UP --> UP AUTO, DOWN --> DOWN AUTO	No continuity --> Continuity
   MUP (P9-23) <--> GND (P11-1)	B-W <--> W-B	Driver's switch of power window master switch OFF --> UP	No continuity --> Continuity
   MDN (P9-25) <--> GND (P11-1)	V <--> W-B	Driver's switch of power window master switch OFF --> DOWN	No continuity --> Continuity

   HINT:

   If the value is not as specified, there may be a malfunction at the vehicle's side.

3. Connect the connector, and inspect the voltage between each terminal of the connector.

   Standard: 

   ECU CONNECTORS VOLTAGE AND CONTINUITY CONDITION REFERENCE
   
   

   Symbols (Terminal No.)	Wiring color	Condition	Specified condition
   DN(P11-2) <-->G ND (P11-1)	G <--> W-B	Ignition switch ON, driver's switch of power window master switch OFF --> DOWN	0V --> 10-14V
   UP (P11-3) <--> GND (P11-1)	L <--> W-B	Ignition switch ON, driver's switch of power window master switch OFF --> UP
   WLS1 (P9-20) <--> GND(P11-1)	L-R <--> W-B	Ignition switch ON, window lock switch LOCK --> UNLOCK

HINT:

If the value is not as specified, the passenger door ECU or communication line may be defective.