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Terminals Of Ecu

NOTE:
  • Turn the engine switch off before measuring the resistance of CAN bus main wires and CAN bus branch wires.
  • After the engine switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
  • Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, any other switches, or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.

HINT.

  1. CAN JUNCTION CONNECTOR (CAN LH JUNCTION CONNECTOR, CAN RH JUNCTION CONNECTOR) 

    HINT:

    • The connectors connected to the CAN junction connector can be distinguished by the colors of the bus lines and the connecting side of the junction connector
    • The connectors can be connected to any terminals on the same side.
    1. CAN LH junction connector
      Fig 1: CAN LH Junction Connector Diagram
      G05754115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Wiring Color 

      WIRING COLOR SPECIFICATION

      CAN LH Junction Connector A Side (w/ Earth Terminal) Code Color (CANH Side) Color (CANL Side)
      Steering angle sensor J1 P W
      ECM J2 B W
      Seat belt control ECU J3 V W
      Center airbag sensor J4 R W

      Wiring Color 

      WIRING COLOR SPECIFICATION

      CAN LH Junction Connector B Side (w/o Earth Terminal) Code Color (CANH Side) Color (CANL Side)
      Yaw rate sensor J5 P W
      CAN main bus line (bus line connecting CAN LH
      Junction Connector and CAN RH Junction Connector)      		 J7 B W
      DLC3 J8 G W
      Distance control ECU J9 GR W
    2. CAN RH junction connector
      Fig 2: CAN RH Junction Connector Diagram
      G05754116Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Wiring Color 

      WIRING COLOR SPECIFICATION

      CAN RH Junction Connector A Side (w/ Earth Terminal) Code Color (CANH Side) Color (CANL Side)
      CAN main bus line (bus line connecting CAN RH Junction Connector and CAN LH Junction Connector) J81 B W
      Power steering ECU J82 P W
      Skid control ECU J83 R W

      Wiring Color 

      WIRING COLOR SPECIFICATION

      CAN RH Junction Connector B Side (w/o Earth Terminal) Code Color (CANH Side) Color (CANL Side)
      Gateway ECU J84 B W
    3. The terminals on connectors for the CAN junction connector
      TERMINAL REFERENCE CHART

      Terminal Terminal symbol
      1 CANH
      2 CANL
      Fig 3: Identifying CAN Junction Connector
      G05754117Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Wiring diagram for identifying CAN junction connectors
      Fig 4: CAN Junction Connector Diagram
      G05754118Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. DLC3 
    1. Measure the resistance according to the value(s) in the table below
      Fig 5: Identifying DLC3 And J21 Connector Terminal
      G05754119Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Wiring Color Terminal Description Condition Specified Condition
      J21-6 (CANH) - J21-14 (CANL) G-W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω
      J21-6(CANH) - J21-4(CG) G-W-B HIGH-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J21-14(CANL) - J21-4(CG) W-W-B LOW-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J21-6 (CANH) - J21-16 (BAT) G-L HIGH-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
      J21-14 (CANL) - J21-16 (BAT) W-L LOW-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
  3. SKID CONTROL ECU 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 6: Identifying Skid Control ECU Connector Terminal
      G05754120Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Wiring Color Terminal Description Condition Specified Condition
      J77-8 (CANH) - J77-16 (CANL) R-W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω
      J77-8 (CANH) - J78-26 (GND1) R-W-B HIGH-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J77-16 (CANL) - J78-26 (GND1) W-W-B LOW-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J77-8 (CANH) - J21-16 (BAT) R-L HIGH-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
      J77-16 (CANL) - J21-16 (BAT) W-L LOW-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
  4. STEERING ANGLE SENSOR 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 7: Identifying J23 Connector Terminal
      G05754121Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Wiring Color Terminal Description Condition Specified Condition
      J23-10 (CANH) - J23-9 (CANL) P-W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω
      J23-10 (CANH) - J23-2 (ESS) P-W-B HIGH-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J23-9 (CANL) - J23-2 (ESS) W-W-B LOW-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J23-10 (CANH) - J23-3 (BAT) P-LG HIGH-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
      J23-9 (CANL) - J23-3 (BAT) W-LG LOW-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
  5. YAW RATE SENSOR 
    1. Measure the resistance according to the value(s) in the table below
      Fig 8: Identifying J21 And J41 Connector Terminal
      G05754122Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Wiring Color Terminal Description Condition Specified Condition
      J41-3 (CANH) - J41-2 (CANL) P-W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω
      J41-3 (CANH) - J41-1 (GND) P-W-B HIGH-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J41-2 (CANL) - J41-1 (GND) W-W-B LOW-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J41-3 (CANH) - J21-16 (BAT) P-L HIGH-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
      J41-2 (CANL) - J21-16 (BAT) W-L LOW-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
  6. DISTANCE CONTROL ECU 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 9: Identifying J21 And J17 Connector Terminal
      G05754123Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Wiring Color Condition Specified Condition
      J17-8 (CANH) - J17-9 (CANL) GR-W Engine Switch off 54 to 69 Ω
      J17-8 (CANH) - J17-12 (GND) GR-BR Engine Switch off 200 Ω or higher
      J17-9 (CANL) - J17-12 (GND) W-BR Engine Switch off 200 Ω or higher
      J17-8 (CANH) - J21-16 (BAT) GR-L Cable from negative battery terminal disconnected 6 kΩ or higher
      J17-9 (CANL) - J21-16 (BAT) W-L Cable from negative battery terminal disconnected 6 kΩ or higher
  7. SEAT BELT CONTROL ECU 
    1. Measure the resistance according to the value(s) in the table below
      Fig 10: Identifying Q38 Connector Terminal
      G05754124Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Wiring Color Terminal Description Condition Specified Condition
      Q38-4 (CANH) - Q38-6 (CANL) B-W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω
      Q38-4 (CANH) - Q38-18 (PGND) B-W-B HIGH-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      Q38-6 (CANL) - Q38-18 (PGND) W-W-B LOW-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      Q38-4 (CANH) - Q38-9 (+B) B-W HIGH-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
      Q38-6(CANL) - Q38-9(+B) W-W LOW-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
  8. POWER STEERING ECU 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 11: Identifying Q31 Connector Terminal
      G05754125Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Wiring Color Terminal Description Condition Specified Condition
      A31-2 (CANH) - A31-3 (CANL) B-R HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω
      A31-2 (CANH) - A31-5 (PGND) B-B HIGH-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      A31-3 (CANL) - A31-5 (PGND) R-B LOW-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      A31-2 (CANH) - A31-4 (PIG) B-R HIGH-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
      A31-3 (CANL) - A31-4 (PIG) R-R LOW-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
  9. CENTER AIRBAG SENSOR 
    1. Measure the resistance according to the value(s) in the table below
      Fig 12: Identifying J21 And J47 Connector Terminal
      G05754126Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Wiring Color Terminal Description Condition Specified Condition
      J47-13 (CANH) - J47-22 (CANL) R-W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 54 to 69 Ω
      J47-13 (CANH) - J47-25 (E1) R-W-B HIGH-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J47-22 (CANL) - J47-25 (E1) W-W-B LOW-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J47-13 (CANH) - J21-16 (BAT) R-L HIGH-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
      J47-22 (CANL) - J21-16 (BAT) W-L LOW-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
  10. ECM 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 13: Identifying A6 Connector Terminal
      G05754127Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Condition Specified Condition
      A6-14 (CANH) - A6-13 (CANL) Engine Switch off 108 to 132 Ω
    2. Measure the resistance according to the value(s) in the table below.
      Fig 14: Identifying A6, E6 And A5 Connector Terminal
      G05754128Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Wiring Color Terminal Description Condition Specified Condition
      A6-14(CANH) - A6-13 (CANL) B-W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 108 to 132 Ω
      A6-14(CANH) - E6-1 (E1) B-W-B HIGH-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      A6-13(CANL) - E6-1(E1) W-W-B LOW-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      A6-14 (CANH) - A6-7 (BATT) B-L HIGH-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
      A6-13 (CANL) - A6-7 (BATT) W-L LOW-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
  11. GATEWAY ECU 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 15: Identifying J76 Connector Terminal
      G05754129Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Condition Specified Condition
      J76-17 (CA1H) - J76-18 (CA1L) Engine Switch off 108 to 132 Ω
    2. Measure the resistance according to the value(s) in the table below.
      Fig 16: Identifying J76 Connector Terminal
      G05754130Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE REFERENCE

      Terminal Wiring Color Terminal Description Condition Specified Condition
      J76-17 (CA1H) - J76-18 (CA1L) B-W HIGH-level CAN bus line - LOW-level CAN bus line Engine Switch off 108 to 132 Ω
      J76-17 (CA1H) - J76-24 (GND) B-W-B HIGH-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J76-18 (CA1L) - J76-24 (GND) W-W-B LOW-level CAN bus line - Ground Engine Switch off 200 Ω or higher
      J76-17 (CA1H) - J76-10 (BATT) B-LG HIGH-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
      J76-18 (CA1L) - J76-10 (BATT) W-LG LOW-level CAN bus line - Battery positive Cable from negative battery terminal disconnected 6 kΩ or higher
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