ELECTRONICALLY CONTROLLED BRAKE SYSTEM > TERMINALS OF ECU

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TERMINALS OF ECU

C110368E01


Symbols (Terminal No.)
Terminal Description
GND (1)
Skid control ECU ground
BS1 (2)
FR, RL linear solenoid switching valve (SMC1, SS) power supply
FRA+ (3)
FR pressure increase linear solenoid (+) output
FRR+ (4)
FR pressure decrease linear solenoid (+) output
SMC1 (5)
Master cut solenoid 1 output
BZ (6)
Skid control buzzer output
SP1 (7)
Speed signal output to combination meter
ENA (8)
Capacitor signal output
PCK1 (9)
Pressure sensor 1 stuck check output
FRO (10)
FR wheel speed signal output
RL+ (11)
RL wheel speed sensor power supply output
RL- (12)
RL wheel speed sensor input
CTY+ (13)
Start power supply input (Door)
PMC1 (14)
Master cylinder pressure sensor 1 signal input
FR+ (15)
FR wheel speed sensor power supply output
IG1 (16)
IG1 power supply
FRR- (17)
FR pressure decrease linear solenoid (-) output
FRA- (18)
FR pressure increase linear solenoid (-) output
RLR- (19)
RL pressure decrease linear solenoid (-) output
MR1 (20)
Motor relay 1 power supply output
CBI1 (21)
Capacitor power supply input 1
VBZ (22)
Skid control buzzer power supply output
FAIL (23)
Capacitor signal input
TS (25)
Signal check (Test mode) input
PAC1 (26)
Accumulator pressure sensor 1 signal input
VCM (27)
Pressure sensor 1 power supply output
FR- (28)
FR wheel speed sensor input
+B (29)
Start power supply input (STP)
R1+ (30)
Main relay 1 power supply output
BSO3 (31)
Stroke simulator cut solenoid power supply output
BSO1 (32)
SMC1 power supply output
RLA+ (33)
RL pressure increase linear solenoid (+) output
RLR+ (34)
RL pressure decrease linear solenoid (+) output
RLA- (35)
RL pressure increase linear solenoid (-) output
R1- (36)
Motor relay 1 output
MTT (37)
Motor relay test input
DO1 (38)
+B output 1
DI1 (39)
+B input 1
SS (40)
Stroke simulator cut solenoid output
PRL (42)
RL wheel cylinder pressure sensor signal input
E (43)
Pressure sensor 1 ground
PFR (44)
FR wheel cylinder pressure sensor signal input
STP (45)
Stop light switch input
R3+ (46)
Main relay 1 output

C106606E01


Symbols (Terminal No.)
Terminal Description
SKS2 (1)
Brake pedal stroke sensor signal 2 input
SKS (3)
Brake pedal stroke sensor signal 1 input
SKG (4)
Brake pedal stroke sensor ground
VCSK (5)
Brake pedal stroke sensor power supply output

C106607E01


Symbols (Terminal No.)
Terminal Description
GND4 (1)
Skid control ECU ground
BS2 (2)
FL, RR linear solenoid switching valve (SMC2) power supply
FLA+ (3)
FL pressure increase linear solenoid (+) output
FLR+ (4)
FL pressure decrease linear solenoid (+) output
SMC2 (5)
Master cut solenoid 2 output
PCK2 (6)
Pressure sensor 1 stuck check output
CANH (8)
CAN communication line H
FLO (9)
FL wheel speed signal output
RR+ (10)
RR wheel speed sensor power supply output
LBL (11)
Brake fluid level warning switch input
PMC2 (12)
Master cylinder pressure sensor 2 signal input
FL+ (13)
FL wheel speed sensor power supply output
IG2 (14)
IG2 power supply
FLR- (15)
FL pressure decrease linear solenoid (-) output
FLA- (16)
FL pressure increase linear solenoid (-) output
RRA- (17)
RR pressure increase linear solenoid (-) output
R2- (18)
Motor relay 2 output
CANL (19)
CAN communication line L
PKB (20)
Parking brake switch input
RR- (23)
RR wheel speed sensor input
VCM2 (24)
Pressure sensor 2 power supply output
FL- (25)
FL wheel speed sensor input
R2+ (26)
Main relay 2 power supply output
BSO2 (28)
SMC2 power supply output
RRA+ (29)
RR pressure increase linear solenoid (+) output
RRR+ (30)
RR pressure decrease linear solenoid (+) output
RRR- (31)
RR pressure decrease linear solenoid (-) output
MR2 (32)
Motor relay 2 power supply output
DI2 (33)
+B input 2
DO2 (34)
+B output 2
CBI2 (35)
Capacitor power supply input 2
CSW (36)
Traction OFF switch input
PRR (37)
RR wheel cylinder pressure sensor signal input
E2 (38)
Pressure sensor 2 ground
PFL (39)
FL wheel cylinder pressure sensor signal input
R4+ (40)
Main relay 2 output

TERMINAL INSPECTION


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


    C110473E01

    HINT:
    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
    GND (A13-1) - Body ground
    		W-B - Body ground
    		Skid control ECU ground
    		Always
    		Below 1 Ω
    IG1 (A13-16) - Body ground
    		B-Y (LHD), B-W (RHD) - Body ground
    		IG1 power supply
    		Engine switch on (IG)
    		10 to 14 V
    +B (A13-29) - Body ground
    		G-R - Body ground
    		Start power supply input (STP)
    		Always
    		10 to 14 V
    DI1 (A13-39) - Body ground
    		GR - Body ground
    		+B input 1
    		Always
    		10 to 14 V
    STP (A13-45) - Body ground
    		R-W - Body ground
    		Stop light switch input
    		Stop light switch ON → OFF (Brake pedal depressed → released)
    		8 to 14 V →
    Below 1.5 V
    GND4 (A15-1) - Body ground
    		W-B - Body ground
    		Skid control ECU ground
    		Always
    		Below 1 Ω
    LBL (A15-11) - Body ground
    		Y-B - Body ground
    		Brake fluid level warning switch input
    		Brake fluid level is minimum level → maximum level
    		1.9 to 2.1 kΩ →
    Below 1 Ω
    IG2 (A15-14) - Body ground
    		B-W - Body ground
    		IG2 power supply
    		Engine switch on (IG)
    		10 to 14 V
    PKB (A15-20) - Body ground
    		Y-R - Body ground
    		Parking brake switch input
    		Engine switch on (IG), parking brake switch ON → OFF
    		Below 1.5 V →
    10 to 14 V
    DI2 (A15-33) - Body ground
    		B - Body ground
    		+B input 2
    		Always
    		10 to 14 V