VEHICLE STABILITY CONTROL SYSTEM TERMINALS OF ECU

  1. TERMINALS OF ECU

    C215260C02

    *a

    Component without harness connected

    (Skid Control ECU)

    -

    -

    Terminal No. (Symbol)

    Terminal Description

    A7-1 (GND1)

    Skid control ECU ground

    A7-2 (+BM1)

    Power supply for motor

    A7-3 (FR+)

    Front speed sensor RH power supply output

    A7-4 (FL-)

    Front speed sensor LH input

    A7-5 (RR+)

    Rear speed sensor RH power supply output

    A7-6 (RL-)

    Rear speed sensor LH input

    A7-7 (STP)

    Stop light switch

    A7-9 (CSW)

    VSC OFF switch

    A7-11 (CANH)

    CAN communication terminal H

    A7-12 (SP1)

    Speedometer signal

    A7-16 (STP0)

    Stop light control relay

    A7-17 (FR-)

    Front speed sensor RH input

    A7-18 (FL+)

    Front speed sensor LH power supply output

    A7-19 (RR-)

    Rear speed sensor RH input

    A7-20 (RL+)

    Rear speed sensor LH power supply output

    A7-24 (TS)

    Sensor test terminal (Signal check switch)

    A7-25 (CANL)

    CAN communication terminal L

    A7-27 (EXI)

    Center differential lock detection switch

    A7-30 (BZ)*2

    Skid control buzzer

    A7-31 (+BS)

    Power supply for solenoid

    A7-32 (GND2)

    Skid control ECU ground

    A7-40 (EXI3)

    Four wheel drive control ECU

    A7-41 (LBL)

    Brake fluid level warning switch

    A7-44 (HDCS)*1

    Downhill assist control switch

    A7-45 (STP2)

    Stop light switch

    A7-46 (IG1)

    IG1 power supply

    A8-1 (IG2)

    IG2 power supply

    A8-2 (+BM2)

    Power supply for motor

    A8-4 (GND3)

    Skid control ECU ground

    • *1: w/ Downhill Assist Control

    • *2: w/ Dynamic Radar Cruise Control System

  2. TERMINAL INSPECTION

    Disconnect the 2 skid control ECU connectors and measure the voltage or resistance on the wire harness side.

    Tip:

    Voltage cannot be measured with the connector connected to the skid control ECU as the connector is watertight.

    C173112C02

    *a

    Front view of wire harness connector

    (to Skid Control ECU)

    -

    -

    Terminal No. (Symbol)

    Wiring Color

    Terminal Description

    Condition

    Specified Condition

    A7-2 (+BM1) - Body ground

    B

    Power supply for motor

    (from battery)

    Always

    11 to 14 V

    A7-7 (STP) - Body ground

    V

    Stop light switch

    Brake pedal depressed → released

    8 to 14 V → Below 1.5 V

    A7-9 (CSW) - Body ground

    B

    VSC OFF switch input

    VSC OFF switch off → on and held

    10 kΩ or higher → Below 1 Ω

    A7-16 (STP0) - Body ground

    LG

    Stop light control relay

    Engine switch off → on (IG)

    Below 1.1 V → 11 to 14 V

    A7-31 (+BS) - Body ground

    L-R

    Power supply for solenoid

    (from battery)

    Always

    11 to 14 V

    A7-41 (LBL) - Body ground

    V-G

    Brake fluid level warning switch

    Brake fluid level +/-5 mm (+/-0.196 in.) from minimum level → maximum level

    Below 1 Ω → 1.9 to 2.1 kΩ

    A7-44 (HDCS)* - Body ground

    W-L

    Downhill assist control switch input

    Downhill assist control switch off → on

    10 kΩ or higher → Below 1 Ω

    A7-45 (STP2) - Body ground

    L

    Stop light switch

    Brake pedal depressed → released

    8 to 14 V → Below 1.5 V

    A7-46 (IG1) - Body ground

    G

    IG1 power supply

    Engine switch off → on (IG)

    Below 1 V → 11 to 14 V

    A8-1 (IG2) - Body ground

    W

    IG2 power supply

    Engine switch off → on (IG)

    Below 1 V → 11 to 14 V

    A8-2 (+BM2) - Body ground

    B

    Power supply for motor

    (from battery)

    Always

    11 to 14 V

    A7-1 (GND1) - Body ground

    W-B

    Ground

    Always

    Below 1 Ω

    A7-32 (GND2) - Body ground

    W-B

    Ground

    Always

    Below 1 Ω

    A8-4 (GND3) - Body ground

    W-B

    Ground

    Always

    Below 1 Ω

    • *: w/ Downhill Assist Control