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Terminals Of Ecu

  1. Terminal of ECU 
    Fig 1: Identifying Skid Control ECU Terminals
    G05296900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ECU TERMINAL REFERENCE CHART

    Symbols (Terminal No.) Terminal Description
    GND 2 (1) Motor ground
    BM (2) Motor relay input
    FR+ (3) Front RH wheel speed signal power supply output
    FL- (4) Front LH wheel speed signal input
    RR+ (5) Rear RH wheel speed signal power supply output
    RL- (6) Rear LH wheel speed signal input
    FSW+ (7) Brake pedal load sensing switch input
    CANH (11) CAN communication line H
    SP1 (12) Speed signal output for combination meter
    D/G (13) Diagnosis tester communication line
    MRF (14) Fail-safe motor relay output
    MR (15) Motor relay output
    FR- (17) Front RH wheel speed signal input
    FL+ (18) Front LH wheel speed signal power supply output
    RR- (19) Rear RH wheel speed signal input
    RL+ (20) Rear LH wheel speed signal power supply output
    TS (24) Test mode input
    CANL (25) CAN communication line L
    STP (27) Stop light switch input
    PKB (28) Parking brake switch input
    BZ (30) Buzzer output
    +BS (31) Solenoid relay power supply
    GND1 (32) Skid control ECU ground
    FRO (37) Front RH wheel speed signal output
    FLO (38) Front LH wheel speed signal output
    RRO (39) Rear RH wheel speed signal output
    RLO (40) Rear LH wheel speed signal output
    WFSE (42) WFSE input
    CSW (43) VSC OFF switch input
    R+ (45) Power supply for motor relay
    IG1 (46) IG1 power supply
  2. Terminal Inspection 
    1. Disconnect the connector and measure the voltage or resistance on the wire harness side.
    Fig 2: Identifying Skid Control ECU Connector Terminals
    G05296901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

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

    ECU TERMINAL REFERENCE CHART

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    FSW+ (7) - Body ground G-O - Body ground Brake pedal load sensing switch input Stop light switch ON
    (Brake pedal depressed)    		 1 kΩ
    FSW+ (7) - Body ground G-O - Body ground Brake pedal load sensing switch input Stop light switch OFF
    (Brake pedal released)    		 213Ω
    STP (27) - Body ground R-W - Body ground Stop light switch input Stop light switch ON
    (Brake pedal depressed)    		 8 to 14 V
    STP (27) - Body ground R-W - Body ground Stop light switch input Stop light switch OFF
    (Brake pedal released)    		 Below 1.5 V
    PKB (28) - Body ground Y-R - Body ground Parking brake switch input Engine switch on (IG), parking brake switch ON Below 1 Ω
    PKB (28) - Body ground Y-R - Body ground Parking brake switch input Engine switch on (IG), parking brake switch OFF 10 kΩ or higher
    BZ (30) - Body ground Y-B - Body ground Buzzer output Engine switch on (IG), when not buzzer sounding 6 to 10 V
    +BS (31) - Body ground R - Body ground Solenoid relay power supply Always 10 to 14 V
    CSW (43) - Body ground R-L - Body ground VSC OFF switch input VSC OFF switch OFF 10 kΩ or higher
    CSW (43) - Body ground R-L - Body ground VSC OFF switch input VSC OFF switch ON Below 1 Ω
    IG1 (46) - Body ground B-W - Body ground IG1 power supply Engine switch on (IG) 10 to 14 V
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