Terminals Of Ecu

HINT:

This part of the article describes the standard CAN values for all CAN related components.

1. CAN J/C 
   1. CAN J/C connectors.

      HINT:

      • The connectors connected to the CAN J/C can be distinguished by the colors of the bus lines and the connecting side of the connector.
      • J39, J40, J41 and J42 are interchangeable.
        Fig 1: Identifying CAN J/C Connector Terminals

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        COLOR SPECIFICATION
        
        

        CAN J/C connectors ("A" side, w/ earth terminal)	Color (CAN-H Side)	Color (CAN-L Side)
        ECM (J39)	L	LG
        DLC3 (J40)	P	V
        Skid Control ECU (J41)	B	W
        Steering angle sensor (J42)	Y	B

        COLOR SPECIFICATION
        
        

        CAN J/C connectors ("B" side, w/o earth terminal)	Color (CAN-H Side)	Color (CAN-L Side)
        Yaw rate sensor (J43)	R	W

   2. The terminals of the CAN J/C connectors.
      TERMINAL SPECIFICATION
      
      

      Terminal	Terminal symbol
      1	CANH
      2	CANL

      Fig 2: Identifying CAN J/C Connectors

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   3. Measure the resistance according to the value(s) in TERMINALS SPECIFIED VALUE .

      Standard: 

      TERMINALS SPECIFIED VALUE
      
      

      Terminals	Specified value
      CANH - CANL	108 to 132 ohms

      Fig 3: Identifying CAN J/C Connectors - (With & Without Earth Terminal)

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2. DLC3 
   1. Check the DLC3.
      1. Measure the resistance according to the value(s) in Fig 5.
         Fig 4: Checking DLC3 Connector Terminal

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         Standard: 

         Fig 5: Terminal Description Specified Value Table

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3. SKID CONTROL ECU 
   1. Check the skid control ECU harness side connector (S37).
      1. Disconnect the connector (S37) from the skid control ECU.
      2. Measure the resistance according to the value(s) in Fig 7.
         Fig 6: Disconnecting Connector (S37) From Skid Control ECU

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         Standard: 

         Fig 7: Terminal Description Specified Value Table

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4. STEERING ANGLE SENSOR 
   1. Check the harness side connector (S12) of the steering angle sensor.
      1. Disconnect the connector (S12) from the steering angle sensor.
      2. Measure the resistance according to the value(s) in Fig 9.
         Fig 8: Disconnecting Connector (S12) From Steering Angle Sensor

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         Standard: 

         Fig 9: Terminal Description Specified Value Table

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5. YAW RATE SENSOR 
   1. Check the yaw rate sensor harness side connector (Y1).
      1. Disconnect the connector (Y1) from the yaw rate sensor.
      2. Measure the resistance according to the value(s) in Fig 11.
         Fig 10: Disconnecting Connector (Y1) From Yaw Rate Sensor

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         Standard: 

         Fig 11: Terminal Description Specified Value Table

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6. ECM 
   1. Measure the resistance according to the value(s) in Fig 13.
      Fig 12: Identifying ECM Connector Terminal

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      Fig 13: Terminal Specified Value Table

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   2. Measure the resistance according to the value(s) in Fig 15.
      Fig 14: Disconnecting Connecting Terminal

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      Standard: 

      Fig 15: Terminal Specified Value Table

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