RX400h · Service Manual COMMUNICATION SYSTEM

TERMINALS OF ECU

System information

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


CAN J/C (CAN RH J/C, CAN CENTER J/C)

  1. CAN RH J/C
    C113198E06

    NOTICE:
    1. 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.
    2. The connectors can be connected to any cables on the same side.

    Connector color:
    CAN RH J/C connectors
    (A side, w/ earth terminal)
    		 Connector color
    Skid control ECU (J24)
    		 W

    Connector colors:
    CAN RH J/C connectors
    (B side, w/o earth terminal)
    		 Connector color
    HV control ECU (J57)
    		 GR
    CAN main bus line (J25) (bus line to connect CAN RH - CAN CENTER)
    		 B
    Yaw rate sensor (J26)
    		 L
    Television camera ECU (J58)
    		 BR

  2. CAN Center J/C
    C116280E03

    NOTICE:
    1. 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.
    2. The connectors can be connected to any cables on the same side.

    Connector colors:
    CAN Center J/C connectors
    (A side, w/ earth terminal)
    		 Connector color
    Power steering ECU (J50)
    		 BR
    CAN main bus line (J51) (bus line to connect CAN center - CAN RH)
    		 B
    Network gateway ECU (J52)
    		 L
    DLC3 (J53)
    		 W

    Connector colors:
    CAN J/C connectors
    (B side, w/o earth terminal)
    		 Connector color
    Steering sensor (J54)
    		 GR

  3. G026205E01
    The terminals of the CAN J/C connectors.
    Terminal
    		 Terminal symbol
    1
    		 CANH
    2
    		 CANL

  4. G026214E07
    Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Terminals
    		 Condition
    		 Specified value
    CANH - CANL
    		 Disconnect the negative auxiliary battery cable
    		 108 to 132 Ω

  5. Wiring diagram for identifying CAN J/C connectors.
    C115356E02


DLC3

  1. G026206E11
    Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Terminals
    		 Condition
    		 Specified Condition
    D1-6 (CANH) - D1-14 (CANL)
    		 Disconnect the negative auxiliary battery cable
    		 54 to 69 Ω
    D1-6 (CANH) - D1-4 (CG)
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    D1-14 (CANL) - D1-4 (CG)
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    D1-6 (CANH) - D1-16 (BAT)
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher
    D1-14 (CANL) - D1-16 (BAT)
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher


SKID CONTROL ECU

  1. C113751E03
    Disconnect the connectors from the skid control ECU.

  2. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Terminals
    		 Wiring Color
    		 Condition
    		Specified Condition
    S40-19 (CANH) - S40-18 (CANL)
    		 B - W
    		 Disconnect the negative auxiliary battery cable
    		 54 to 69 Ω
    S40-19 (CANH) - S41-1 (GND1)
    		 B - W-B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    S40-18 (CANL) - S41-1 (GND1)
    		 W - W-B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    S40-19 (CANH) - S40-3 (+BI1)
    		 B - L
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher
    S40-18 (CANL) - S40-3 (+BI1)
    		 W - L
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher
    S40-19 (CANH) - S39-5 (+BI2)
    		 B - L-B
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher
    S40-18 (CANL) - S39-5 (+BI2)
    		 W - L-B
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher


STEERING SENSOR

  1. G026357E05
    Disconnect the connector from the steering sensor.

  2. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Terminals
    		 Wiring Color (ECB)
    		 Condition
    		Specified Condition
    S10-10 (CANH) - S10-9 (CANL)
    		 B - W
    		 Disconnect the negative auxiliary battery cable
    		 54 to 69 Ω
    S10-10 (CANH) - S10-2 (ESS)
    		 B - W-B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    S10-9 (CANL) - S10-2 (ESS)
    		 W - W-B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    S10-10 (CANH) - S10-3 (BAT)
    		 B - SB
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher
    S10-9 (CANL)- S10-3 (BAT)
    		 W - SB
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher


YAW RATE SENSOR

  1. G026641E01
    Disconnect the connector from the yaw rate sensor.

  2. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Terminals
    		 Wiring Color
    		 Condition
    		Specified Condition
    Y1-3 (CANH) - Y1-2 (CANL)
    		 B - W
    		 Disconnect the negative auxiliary battery cable
    		 54 to 69 Ω
    Y1-3 (CANH) - Y1-1 (GND)
    		 B - W-B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    Y1-2 (CANL) - Y1-1 (GND)
    		 W - W-B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    Y1-3 (CANH) - D1-16 (BAT)
    		 B - LG
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher
    Y1-2 (CANL) - D1-16 (BAT)
    		 W - LG
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher


HV CONTROL ECU

  1. C113752E05
    Disconnect the connectors from the HV control ECU.

  2. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Terminals
    		 Wiring Color
    		 Condition
    		Specified Condition
    H30-25 (CANH) - H30-33 (CANL)
    		 B - W
    		 Disconnect the negative auxiliary battery cable
    		 54 to 69 Ω
    H30-25 (CANH) - Body earth
    		 B - Body earth
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    H30-33 (CANL) - Body earth
    		 W - Body earth
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    H30-25 (CANH) - H29-1 (BATT)
    		 B - GR
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher
    H30-33 (CANL) - H29-1 (BATT)
    		 W - GR
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher


POWER STEERING ECU

  1. C110545E13
    Disconnect the connector from the power steering ECU.

  2. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Terminals
    		 Wiring Color
    		 Condition
    		Specified Condition
    P43-2 (CANH) - P43-3 (CANL)
    		 B - W
    		 Disconnect the negative auxiliary battery cable
    		 54 to 69 Ω
    P43-2 (CANH) - P43-5 (PGND)
    		 B - B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    P43-3 (CANL) - P43-5 (PGND)
    		 W - B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    P43-2 (CANH) - P43-6 (+B)
    		 B - B-W
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher
    P43-3 (CANL) - P43-6 (+B)
    		 W - B-W
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher


GATEWAY ECU

  1. G031972E09
    Disconnect the connector from the gateway ECU.

  2. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Terminals
    		 Wiring Color
    		 Condition
    		Specified Condition
    G1-17 (CA1H) - G1-18 (CA1L)
    		 B - W
    		 Disconnect the negative auxiliary battery cable
    		 54 to 69 Ω
    G1-17 (CA1H) - G1-24 (GND)
    		 B - W-B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    G1-18 (CA1L) - G1-24 (GND)
    		 W - W-B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    G1-17 (CA1H) - G1-10 (BATT)
    		 B - SB
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher
    G1-18 (CA1L) - G1-10 (BATT)
    		 W - SB
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher


TELEVISION CAMERA ECU

  1. C113766E03
    Disconnect the connector from the television camera ECU.

  2. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Terminals
    		 Wiring Color
    		 Condition
    		Specified Condition
    T17-18 (CANH) - T17-17 (CANL)
    		 B - W
    		 Disconnect the negative auxiliary battery cable
    		 54 to 69 Ω
    T17-18 (CANH) - T16-6 (GND1)
    		 B - W-B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    T17-17 (CANL) - T16-6 (GND1)
    		 W - W-B
    		 Disconnect the negative auxiliary battery cable
    		 1 kΩ or higher
    T17-18 (CANH) - T16-1 (+B)
    		 B - L
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher
    T17-17 (CANL) - T16-1 (+B)
    		 W - L
    		 Disconnect the negative auxiliary battery cable
    		 1 MΩ or higher

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