VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU

  1. TERMINALS OF ECU

    C306841C03

    *a

    Component without harness connected

    (Skid Control ECU [Brake Actuator Assembly])

    -

    -

    Terminal No. (Symbol)

    Terminal Description

    1 (GND2)

    Pump motor ground

    2

    - (Not used)

    3

    - (Not used)

    4

    - (Not used)

    5 (STP2)

    Stop light switch assembly input

    6

    - (Not used)

    7

    - (Not used)

    8

    - (Not used)

    9

    - (Not used)

    10 (CANL)

    CAN communication line L

    11 (EXI3)*1

    Back-up light switch assembly input

    12 (IG1)

    ECU power supply input

    13 (BM)

    Motor relay power supply

    14 (SP1)

    Speed signal output for speedometer

    15 (RR-)

    Rear wheel speed RH (-) signal input

    16 (RR+)

    Rear wheel speed RH (+) power supply output

    17 (FL-)

    Front wheel speed LH (-) signal input

    18 (FL+)

    Front wheel speed LH (+) power supply output

    19

    - (Not used)

    20

    - (Not used)

    21

    - (Not used)

    22 (CANH)

    CAN communication line H

    23

    - (Not used)

    24

    - (Not used)

    25 (GND1)

    Skid control ECU (Brake actuator assembly) ground

    26 (STPO)

    Stop light control relay output

    27 (HDCS)*2

    Downhill assist control switch input

    28 (RL-)

    Rear wheel speed LH (-) signal input

    29 (RL+)

    Rear wheel speed LH (+) power supply output

    30 (FR-)

    Front wheel speed RH (-) signal input

    31 (FR+)

    Front wheel speed RH (+) power supply output

    32

    - (Not used)

    33 (CSW)

    VSC OFF switch (Telltale light assembly) input

    34

    - (Not used)

    35 (STP)

    Stop light switch assembly input

    36

    - (Not used)

    37

    - (Not used)

    38 (+BS)

    Solenoid relay power supply

    • *1: for Manual Transaxle

    • *2: w/ Downhill Assist Control

  2. TERMINAL INSPECTION

    1. Disconnect the A100skid control ECU (brake actuator assembly) connector and measure the voltage or resistance on the wire harness side.

      C306842C29

      *a

      Front view of wire harness connector

      (to Skid Control ECU [Brake Actuator Assembly])

      -

      -
      Tip:

      Voltage cannot be measured with the connector connected to the skid control (brake actuator assembly) as the connector is watertight.

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      A100-1 (GND2) - Body ground

      W-B - Body ground

      Pump motor ground

      Always

      Below 1 Ω

      A100-5 (STP2) - Body ground

      LG - Body ground

      Stop light signal input

      Stop light switch assembly on → off

      (Brake pedal depressed → released)

      8 to 14 V → Below 1.5 V

      A100-11 (EXI3) - Body ground*1

      R - Body ground

      Back-up light switch assembly input

      Shift lever not in R → Shift lever in R

      Below 1.5 V → 8 to 14 V

      A100-12 (IG1) - Body ground

      L - Body ground

      ECU power supply input

      Ignition switch ON

      10.5 to 16 V*3

      11 to 14 V*4

      A100-13 (BM) - Body ground

      B - Body ground

      Motor relay power supply

      Always

      11 to 14 V

      A100-14 (SP1) - Body ground

      V - Body ground

      Speed signal output for speedometer

      Ignition switch ON

      11 to 14 V

      A100-25 (GND1) - Body ground

      W-B - Body ground

      Skid control ECU (Brake actuator assembly) ground

      Always

      Below 1 Ω

      A100-26 (STPO) - Body ground

      W - Body ground

      Stop light control relay output

      Ignition switch ON

      11 to 14 V

      A100-27 (HDCS) - Body ground*2

      Y - Body ground

      Downhill assist control switch input

      Downhill assist control switch on → off

      Below 1 Ω → 10 kΩ or higher

      A100-33 (CSW) - Body ground

      L - Body ground

      VSC OFF switch (Telltale light assembly) input

      VSC OFF switch (telltale light assembly) pressed and held → released

      Below 1 Ω → 10 kΩ or higher

      A100-35 (STP) - Body ground

      L - Body ground

      Stop light switch assembly input

      Stop light switch assembly on → off

      (Brake pedal depressed → released)

      8 to 14 V → Below 1.5 V

      A100-38 (+BS) - Body ground

      W - Body ground

      Solenoid relay power supply

      Always

      11 to 14 V

      • *1: for Manual Transaxle

      • *2: w/ Downhill Assist Control

      • *3: w/ Stop and Start System

      • *4: w/o Stop and Start System