ANTI-LOCK BRAKE SYSTEM TERMINALS OF ECU


  1. TERMINALS OF ECU

    A01BAXBE01
    Symbols (Terminal No.) Terminal Description
    +BS (1) Power supply for solenoid
    GND1 (2) Skid control ECU ground
    P (6)* P shift position switch signal
    FL- (8) Front left wheel speed sensor output
    FL+ (9) Front left wheel speed sensor input
    STP (10) Stop light switch input
    RL+ (11) Rear left wheel speed sensor input
    RL- (12) Rear left wheel speed sensor output
    WA (13) ABS warning light output
    D/G (14) Diagnosis tester communication line
    TS (15) Sensor check switch input
    TC (16) Diagnosis switch input
    PKB (18) Parking brake switch input
    N (20)* N shift position switch signal
    +BM (23) Power supply for motor
    GND2 (24) Skid control ECU ground
    IG1 (25) ECU power supply
    FR- (30) Front right wheel speed sensor output
    FR+ (31) Front right wheel speed sensor input
    RR+ (33) Rear right wheel speed sensor input
    RR- (34) Rear right wheel speed sensor output

    • *: for Automatic Transmission

  2. TERMINAL INSPECTION


    1. Disconnect the connector and measure the voltage or resistance on the wire harness side.

      A01BI64E02

      Tech Tips

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

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      +BS (B19-1) - Body ground W-R - Body ground Power supply for solenoid (Front battery) Always 10 to 14 V
      GND1 (B19-2) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω
      STP (B19-10) - Body ground G - Body ground Stop light switch input Stop light switch ON → OFF (Brake pedal depressed → released) 8 to 16 V → Below 1.5 V
      PKB (B19-18) - Body ground B - Body ground Parking brake switch input Ignition switch ON, parking brake switch ON → OFF Below 1.5 V → 10 to 14 V
      +BM (B19-23) - Body ground W - Body ground Power supply for motor (Front battery) Always 10 to 14 V
      GND2 (B19-24) - Body ground W-B - Body ground Skid control ECU ground Always Below 1 Ω
      IG1 (B19-25) - Body ground B - Body ground ECU power supply Ignition switch off → ON Below 1 V → 10 to 14 V