Terminals Of Ecu

Terminals of ECU

Fig 1: Identifying Terminals Of ECU

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CONNECTOR TERMINAL REFERENCE

Symbols (Terminals No.)	Terminal Description
GND1 (1)	Skid control ECU ground
+BS (2)	Solenoid valve power supply
GL1(4) 1) (3)	Deceleration sensor signal input
P (6) (*2)	Shift position indicator P signal input
EXI2 (7) (*3)	Rear differential lock detection switch input
GGND(8)(1)(3)	Deceleration sensor ground
FL-(9)	Front wheel speed LH signal input
FL+ (10)	Front wheel speed sensor LH power supply
D/G (13)	Diagnosis tester communication line
STP (14)	Stop light switch input
RL+ (15)	Rear wheel speed sensor LH power supply
RL- (16)	Rear wheel speed LH signal input
WA (17)	ABS warning light output
SP1 (18) (*2)	Speed signal output for meter
TS (20)	Sensor diagnosis check input
TC (21)	Diagnosis tester communication line
PKB (23)	Parking brake switch input
EXI (24) (*3)	ADD change over actuator switch input
+BM (31)	Motor relay power supply
GND2 (32)	Skid control ECU ground
N (36) (*2)	Shift position indicator N signal input
VGS(37)(1)(3)	Deceleration sensor power supply
EXI4 (38) (*3)	Detection (L4) switch input
FR- (39)	Front wheel speed RH signal input
FR+ (40)	Front wheel speed sensor RH power supply
BRL (43)	Brake warning light input
RR+ (44)	Rear wheel speed sensor RH power supply
RR- (45)	Rear wheel speed RH signal input
IG1 (46)	ECU power supply
HINT: (1): Pre-runner (2): A/T (*3): 4WD

Terminal Inspection

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

HINT:

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

Fig 2: Identifying Skid Control ECU Connector Terminal

CONNECTOR TERMINAL REFERENCE

Symbols (Terminals No.)	Wiring Color	Terminal Description	Condition	STD Voltage (V)
+BS (2) - GND1 (1)	Y - W-B	Solenoid valve power supply	Always	10 to 14 V
STP (14) - GND1 (1)	L - W-B	Stop light switch input	Stop light switch ON	10 to 14 V
WA (17) - GND1 (1)	O - W-B	ABS warning light output	IG switch ON, ABS warning light ON	4 V or higher
PKB (23) - GND1 (1)	G-Y - W-B	Parking brake switch input	IG switch ON, parking brake switch ON	Below 2.0 V
PKB (23) - GND1 (1)	G-Y - W-B	Parking brake switch input	IG switch ON, parking brake switch OFF	8 to 14 V
+BM (31) - GND2 (32)	R - W-B	Motor relay power supply	Always	10 to 14 V
BRL (43) - GND1 (1)	B-W - W-B	Brake warning light output	IG switch ON, brake warning light ON	4 V or higher
IG1 (46) - GND1 (1)	LG - W-B	ECU power supply	IG switch ON	10 to 14 V