FixVault
Home › Scion › 2005 › tC Automatic › Repair and Diagnosis › Brakes › Traction Control › Abs With EBD System › Terminals Of Ecu

Terminals Of Ecu

  1. Terminals of ECU 
    Fig 1: Identifying Skid Control ECU Terminals
    G03064969Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SKID CONTROL ECU TERMINALS DESCRIPTION

    Symbols (Terminal No.) Terminal Description
    +BS (1) Solenoid valve power supply
    GND1 (2) Skid control ECU ground
    WTIR (5) Tire pressure warning light output
    PN (6) NEUTRAL switch signal circuit
    FL- (8) Front LH wheel speed signal input (-)
    FL+ (9) Front LH wheel speed signal input (+)
    STP (10) Stop lamp switch input
    RL+ (11) Rear LH wheel speed signal input (+)
    RL- (12) Rear LH wheel speed signal input (-)
    WA (13) ABS warning light output
    D/G (14) Diagnosis tester communication line
    TS (15) Sensor diagnosis check input
    TC (16) Diagnosis tester communication line
    PKB (18) Parking brake switch input
    INIT (19) TPWS switch input
    +BM (23) Motor relay power supply
    GND2 (24) Actuator pump motor ground
    IG1 (25) ECU power supply
    SP1 (26) Speed signal output for meter
    TSI (27) Outside temperature sensor input
    FR- (30) Front RH wheel speed signal input (-)
    FR+ (31) Front RH wheel speed signal input (+)
    BRL (32) Brake warning light output
    RR+ (33) Rear RH wheel speed signal input (+)
    RR- (34) Rear RH wheel speed signal input (-)
  2. Terminal Inspection 

    Disconnect the connector and measure the voltage on the wire harness side.

    HINT:

    Voltage can not be measured with the connector connected to the skid control ECU as the connector is water resistance.

    Fig 2: Identifying Skid Control ECU Terminals
    G03064970Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    SKID CONTROL ECU TERMINAL DESCRIPTION AND SPECIFIED CONDITIONS

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    +BS (1) - GND1, 2 (2, 24) B - W-B Solenoid valve power supply Always 10 to 14 V
    STP (10) - GND1, 2 (2, 24) L - W-B Stop lamp switch input Stop lamp switch ON 10 to 14 V
    WA (13) - GND1, 2 (2, 24) SB - W-B ABS warning light output IG switch ON, ABS warning light ON 7 to 10 V
    PKB (18) - GND1, 2 (2, 24) LG - W-B Parking brake switch input IG switch ON, parking brake switch ON Below 2.0 V
    PKB (18) - GND1, 2 (2, 24) LG - W-B Parking brake switch input IG switch ON, parking brake switch OFF 10 to 14 V
    +BM (23) - GND1, 2 (2, 24) W - W-B Motor relay power supply Always 10 to 14 V
    BRL (32) - GND1, 2 (2, 24) V - W-B Brake warning light output IG switch ON, brake warning light ON 7 to 10 V
    IG1 (25) - GND1, 2 (2, 24) Y - W-B ECU power supply IG switch ON 10 to 14 V
About FixVault