Terminals Of Ecu

TERMINALS OF ECU

Fig 1: Identifying Connector Terminals Of ECU

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

ECU CONNECTOR TERMINALS REFERENCE CHART

Terminal No. (Symbol)	Terminal Description
1 (GND1)	Skid control ECU ground
3 (GL1)	Deceleration sensor signal input
4 (RL-)	Rear wheel speed LH (-) signal input
5 (RL+)	Rear wheel speed LH (+) power supply output
6 (FR-)	Front wheel speed RH (-) signal input
7 (FR+)	Front wheel speed RH (+) power supply output
12 (+BS)	Solenoid relay power supply
13 (GND2)	Pump motor ground
14 (CANL)	CAN communication line L
15 (GGND)	Deceleration sensor ground
16 (RR-)	Rear wheel speed RH (-) signal input
17 (RR+)	Rear wheel speed RH (+) power supply output
18 (FL-)	Front wheel speed LH (-) signal input
19 (FL+)	Front wheel speed LH (+) power supply output
22 (SP1)	Speed signal output for speedometer
24 (+BM)	Motor relay power supply
25 (CANH)	CAN communication line H
26 (VGS)	Deceleration sensor power supply
28 (STP)	Stop light switch input
34 (IG1)	ECU power supply

TERMINAL INSPECTION

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

Fig 2: Identifying Skid Control Control ECU Connector Terminals

HINT:

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

Standard:

ECU CONNECTOR TERMINALS REFERENCE CHART

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A14-1 (GND1) - Body ground	W-B - Body ground	Skid control ECU ground	Always	Below 1 Ω
A14-12 (+BS) - Body ground	W - Body ground	Solenoid relay power supply	Always	11 to 14 V
A14-13 (GND2) - Body ground	W-B - Body ground	Pump motor ground	Always	Below 1 Ω
A14-28 (STP) - Body ground	G - Body ground	Stop light switch input	Stop light switch ON → OFF (Brake pedal depressed → released)	8 to 14 V → Below 1.5 V
A14-24 (+BM) - Body ground	B - Body ground	Motor relay power supply	Always	11 to 14 V
A14-25 (CANH) - A14-14 (CANL)	G-W	CAN BUS	Ignition switch OFF	54 to 69 Ω
A14-34 (IG1) - Body ground	B - Body ground	ECU power supply	Ignition switch ON	11 to 14 V