Terminals Of Ecu

HINT:

This section describes the standard CAN values for all CAN related components.

1. JUNCTION CONNECTOR 
   Fig 1: Identifying Junction Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   JUNCTION CONNECTOR REFERENCE
   
   

   Junction Connector	Wiring Color	Connect to
   CANH (J25-10)	R	ECM
   CANL (J25-21)	W	ECM
   CANH (J25-11)	R	Translate ECU
   CANL (J25-22)	W	Translate ECU
   CANH (J25-9)	R	DLC3
   CANL (J25-20)	W	DLC3
   CA1H (J25-8)	R	Gateway ECU
   CA1L (J25-19)	W	Gateway ECU

2. CHECK DLC3 
   1. Measure the resistance of the connector.
      Fig 2: Identifying DLC3 Connector Terminal

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      DLC3 CONNECTOR REFERENCE
      
      

      Symbols (Terminal No.)	Wiring Color	Condition	Specified Condition
      CANH (D1-6) - CANL (D1-14)	R - W	Ignition switch OFF	54 to 69 Ω
      CANH (D1-6) - CG (D1-4)	R - W-B	Ignition switch OFF	1 kΩ or higher
      CANL (D1-14) - CG (D1-4)	W - W-B	Ignition switch OFF	1 kΩ or higher
      CANH (D1-6) - BAT (D1-16)	R - B	Ignition switch OFF	1 MΩ or higher
      CANL (D1-14)- BAT (D1-16)	W - B	Ignition switch OFF	1 MΩ or higher

3. CHECK ECM 
   Fig 3: Identifying ECM Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Measure the resistance of the connector.
      ECM CONNECTOR REFERENCE
      
      

      Symbols (Terminal No.)	Wiring Color	Condition	Specified Condition
      CANH (E6-25) - CANL (E6-24)	R - W	Ignition switch OFF	54 to 69 Ω

   2. Disconnect the E4 and E6 ECM connectors.
   3. Measure the resistance of the wire harness side connectors.
      CONNECTOR TERMINALS REFERENCE
      
      

      Symbols (Terminal No.)	Wiring Color	Condition	Specified Condition
      CANH (E6-25) - CANL (E6-24)	R - W	Ignition switch OFF	108 to 132 Ω
      CANH (E6-25) - E01 (E4-2)	R - W-B	Ignition switch OFF	1 kΩ or higher
      CANL (E6-24) - E01 (E4-2)	W - W-B	Ignition switch OFF	1 kΩ or higher
      CANH (E6-25) - BATT (E6-4)	R - B	Ignition switch OFF	1 MΩ or higher
      CANL (E6-24) - BATT (E6-4)	W - B	Ignition switch OFF	1 MΩ or higher

4. CHECK TRANSLATE ECU 
   Fig 4: Identifying Translate ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Disconnect the T28 ECU connector.
   2. Measure the resistance of the wire harness side connectors.
      CONNECTOR TERMINALS REFERENCE
      
      

      Symbols (Terminal No.)	Wiring Color	Condition	Specified Condition
      CANH (T28-8) - CANL (T28-10)	R - W	Ignition switch OFF	108 to 132 Ω
      CANH (T28-8) - GND (T28-40)	R - W-B	Ignition switch OFF	1 kΩ or higher
      CANL (T28-10) - GND (T28-40)	W - W-B	Ignition switch OFF	1 kΩ or higher
      CANH (T28-8) - BAT (D1-16)	R - B	Ignition switch OFF	1 MΩ or higher
      CANL (T28-10) - BAT (D1-16)	W - B	Ignition switch OFF	1 MΩ or higher

5. CHECK GATEWAY ECU 
   Fig 5: Identifying Gateway ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Measure the resistance of the connector.
      CONNECTOR TERMINALS REFERENCE
      
      

      Symbols (Terminal No.)	Wiring Color	Condition	Specified Condition
      CA1H (G3-17) - CA1L (G3-18)	R - W	Ignition switch OFF	54 to 69 Ω

   2. Disconnect the G3 ECU connector.
   3. Measure the resistance of the wire harness side connector.
      CONNECTOR TERMINALS REFERENCE
      
      

      Symbols (Terminal No.)	Wiring Color	Condition	Specified Condition
      CA1H (G3-17) - CA1L (G3-18)	R - W	Ignition switch OFF	54 to 69 Ω
      CA1H (G3-17) - GND (G3-24)	R - W-B	Ignition switch OFF	1 kΩ or higher
      CA1L (G3-18) - GND (G3-24)	W - W-B	Ignition switch OFF	1 kΩ or higher
      CA1H (G3-17) - BATT (G3-10)	R - B	Ignition switch OFF	1 MΩ or higher
      CA1L (G3-18) - BATT (G3-10)	W - B	Ignition switch OFF	1 MΩ or higher