LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> RX 350 FWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> Vehicle Stability Control System >> Terminals Of Ecu
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Terminals Of Ecu

  1. Terminal of ECU 
    Fig 1: Identifying Skid Control ECU Connector Terminals
    G05139659Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    ECU CONNECTOR TERMINAL DESCRIPTION TABLE

    Symbols (Terminal No.) Terminal Description
    GND2 (1) Pump motor ground
    BM (2) Motor relay input
    FR+ (3) Front wheel speed RH signal (+) input
    FL- (4) Front wheel speed LH signal (-) input
    RR+ (5) Rear wheel speed RH signal (+) input
    RL- (6) Rear wheel speed LH 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
    STPO (16) (2) Stop light control relay output
    FR- (17) Front wheel speed RH signal (-) input
    FL+ (18) Front wheel speed LH signal (+) input
    RR- (19) Rear wheel speed RH signal (-) input
    RL+ (20) Rear wheel speed LH signal (+) input
    STP2 (21)(2) Stop light control relay input
    TS (24) Test mode (signal check) input
    CANL (25) CAN communication line L
    STP1 (27) Stop light switch input
    PKB (28) Parking brake switch input
    BZ (30) Skid control buzzer output
    +BS (31) Solenoid relay power supply
    GND1 (32) Skid control ECU ground
    RRO (39) Rear wheel speed RH signal output
    RLO (40) Rear wheel speed LH signal output
    WFSE (42) WFSE input
    CSW (43)(1) Traction OFF switch input
    R+ (45) Power supply for motor relay
    IG1 (46) IG1 power supply
    (1) 2WD
    (2) with Dynamic Laser Cruise Control System
  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 Terminal
      G05272669Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

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

      Standard 

      CONNECTOR TERMINAL VOLTAGE SPECIFICATION TABLE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND2 (S1-1) - Body ground W-L - Body ground Pump motor ground Ignition switch OFF Below 1 Ω
      FSW+ (S1-7) - Body ground LG - Body ground Brake pedal load sensing switch input Stop light switch ON → OFF (Brake pedal depressed → released) 0.9 to 1.1 kΩ → 192 to 234 Ω
      STP2 (S1-21)(3) - Body ground GR - Body ground Stop light control relay input Stop light switch ON → OFF (Brake pedal depressed → released) 8 to 16 V → Below 1.5 V
      STP1 (S1-27) (2) - Body ground W - Body ground Stop light switch input Stop light switch ON → OFF (Brake pedal depressed → released) 8 to 16 V → Below 1.5 V
      PKB (S1-28) - Body ground LG - Body ground Parking brake switch input Ignition switch ON, parking brake switch ON → OFF Below 1 Ω → 10 kΩ or higher
      BZ (S1-30) - Body ground 0 - Body ground Buzzer output Ignition switch ON, when buzzer not sounding 6 to 10 V
      +BS (S1-31) - Body ground L - Body ground Solenoid relay power supply Always 10 to 14 V
      GND1 (S1-32) - Body ground W - B - Body ground Skid control ECU ground Always Below 1 Ω
      CSW (S1-43)(1) - Body ground B - Body ground Traction OFF switch input Traction OFF switch held ON → OFF (Not pressed) Below 1 Ω → 10 kΩ or higher
      IG1 (S1-46) - Body ground P - Body ground IG1 power supply Ignition switch ON 10 to 14 V
      (1) 2WD
      (2) without Dynamic Laser Cruise Control System
      (3) with Dynamic Laser Cruise Control System
scientia non olet · About LEMON Manuals