TERMINALS OF ECU

System information

HINT:

Inspect the connector from the backside while connector is connected.

SKID CONTROL ECU

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
GND1 (S41-1) - Body ground	W-B - Body ground	Ground circuit	Always	Below 1 Ω
GND2 (S40-2) - Body ground	W-B - Body ground	Ground circuit	Always	Below 1 Ω
GND3 (S40-1) - Body ground	W-B - Body ground	Ground circuit	Always	Below 1 Ω
GND4 (S39-2) - Body ground	W-B - Body ground	Ground circuit	Always	Below 1 Ω
GND5 (S39-1) - Body ground	W-B - Body ground	Ground circuit	Always	Below 1 Ω
GND6 (S38-4) - Body ground	W-B - Body ground	Ground circuit	Always	Below 1 Ω
FR+ (S41-32) - FR- (S41-22)	W - O	Front speed sensor RH circuit	Ignition switch ON, driving at approximately 30 km/h (18 mph)	Pulse generation (see waveform 1)
FL+ (S38-28) - FL- (S38-22)	G - R	Front speed sensor LH circuit	Ignition switch ON, driving at approximately 30 km/h (18 mph)	Pulse generation (see waveform 1)
RR+ (S39-31) - RR- (S39-23)	G - R	Rear speed sensor RH circuit	Ignition switch ON, driving at approximately 30 km/h (18 mph)	Pulse generation (see waveform 1)
RL+ (S40-35) - RL- (S40-27)	G - R	Rear speed sensor LH circuit	Ignition switch ON, driving at approximately 30 km/h (18 mph)	Pulse generation (see waveform 1)
FSS (S38-13) - Body ground	LG - Body ground	Front speed sensor shield ground circuit	Always	Below 1 Ω
RSS (S40-10) - Body ground	BR - Body ground	Rear speed sensor shield ground circuit	Always	Below 1 Ω
IG1 (S40-7) - Body ground	Y - Body ground	Power source voltage	Ignition switch ON	10 to 14 V
IG2 (S38-5) - Body ground	W - Body ground	Power source voltage	Ignition switch ON	10 to 14 V
CANH (S40-19) - CANL (S40-18)	B - W	CAN communication line	Ignition switch off	54 to 67 Ω

1. Waveform 1 (Reference):
   

   Item	Contents
   Tool setting	1 V/DIV, 2 ms/DIV
   Vehicle condition	Driving at approximately 30 km/h (18 mph)

   HINT:

   As vehicle speed (wheel rotation speed) increases, the width of the waveform narrows.