Terminals Of Ecu

HINT:

Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

1. JUNCTION CONNECTOR 
   1. NO. 1 JUNCTION CONNECTOR
      Fig 1: Identifying No. 1 Junction Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Wiring Color 

      WIRING COLOR JUNCTION CONNECTOR REFERENCE CHART
      
      

      Junction Connector A Side	Color (CANH Side)	Color (CANL Side)
      Combination meter ECU (H91)*1*2	SB	W
      No. 4 junction connector (H91)*1*3	SB	W
      Center airbag sensor (H90)	BR	W
      Skid control ECU (A59)	B	W
      Distance control ECU (A60)*4	O	W
      HINT: *1: for V bus *2: w/o air suspension system *3: w/ air suspension system *4: w/ Dynamic laser cruise control

      Wiring Color 

      WIRING COLOR JUNCTION CONNECTOR REFERENCE CHART
      
      

      Junction Connector B Side	Color (CANH Side)	Color (CANL Side)
      DLC3 (H93)	V	W
      Main body ECU (H103)*1	L	W
      No. 2 junction connector (H101)	R	W
      Steering angle sensor (H94)	G	W
      Power steering ECU (H106)	GR	W
      HINT: *1: for V bus *2: w/o air suspension system *3: w/ air suspension system *4: w/ Dynamic laser cruise control

      • The connectors connected to the junction connector can be distinguished by the colors of the bus lines and the connecting side of the connector.
      • The connectors can be connected to any terminals on the same side.
   2. NO. 2 JUNCTION CONNECTOR
      Fig 2: Identifying No. 2 Junction Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Wiring Color 

      WIRING COLOR JUNCTION CONNECTOR REFERENCE CHART
      
      

      Junction Connector A Side	Color (CANH Side)	Color (CANL Side)
      Bus buffer ECU (H105)	P	W
      No. 1 junction connector (H100)	R	W
      ECM (H99)	GR	W
      4WD control ECU (H95)	O	W
      Air conditioning amplifier (H92)	B	W

      HINT:

      • The connectors connected to the junction connector can be distinguished by the colors of the bus lines and the connecting side of the connector.
      • The connectors can be connected to any terminals on the same side.
   3. NO. 3 JUNCTION CONNECTOR
      Fig 3: Identifying No. 3 Junction Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Wiring Color 

      WIRING COLOR JUNCTION CONNECTOR REFERENCE CHART
      
      

      Junction Connector A Side	Color (CANH Side)	Color (CANL Side)
      Power seat control ECU (H97)*1	GR	W
      Multiplex tilt and telescopic ECU (H96)*1	O	W
      Main body ECU (H104)*2*3	B	W
      No. 4 junction connector (H104)*2*4	B	W
      Combination meter ECU (H102)*2	Y	W

      Wiring Color 

      WIRING COLOR JUNCTION CONNECTOR REFERENCE CHART
      
      

      Junction Connector B Side	Color (CANH Side)	Color (CANL Side)
      Outer mirror control ECU (H98)*1	LG	W

      HINT:

      • *1: w/ Seat Memory
      • *2: for MS bus
      • *3: w/o power back door system
      • *4: w/ power back door system
      • The connectors connected to the junction connector can be distinguished by the colors of the bus lines and the connecting side of the connector.
      • The connectors can be connected to any terminals on the same side.
   4. TERMINALS OF CONNECTORS FOR JUNCTION CONNECTOR (No. 1, No. 2 and No. 3)
      TERMINAL SYMBOL REFERENCE CHART
      
      

      Terminal	Terminal Symbol
      1	CANH
      2	CANL

   5. NO. 4 JUNCTION CONNECTOR (FRONT OF THE VEHICLE)
      Fig 4: Identifying Junction Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002