CHECK AT ABS-ECU

TERMINAL VOLTAGE CHECK CHART

1.The ABS-ECU connector, and measure the voltages between earth terminal No.12 or No.24 and each respective terminal.

2.The terminal layout is shown in the illustration.

note

Do not measure terminal voltage for approximately three seconds after the ignition switch is turned to the "ON" position. The ABS-ECU performs the initial check during that period.

Terminal No.	Terminal code	Check item	Checking requirements	Normal condition
1	+BV	Solenoid valve power supply	Always	Battery voltage
2-5	-	-	-	-
6	FR+	Wheel speed sensor (FR) power supply	Ignition switch: "ON"	Approximately system voltage
7	FR-	Wheel speed sensor (FR) signal	Drive vehicle	Approximately system voltage
8	RL+	Wheel speed sensor (RL) power supply	Ignition switch: "ON"	Approximately system voltage
9	RL-	Wheel speed sensor (RL) signal	Drive vehicle	Approximately system voltage
10-11	-	-	-	-
13	+BM	Motor power supply	Always	Battery voltage
14-17	-	-	-	-
18	FL+	Wheel speed sensor (FL) power supply	Ignition switch: "ON"	Approximately system voltage
19	FL-	Wheel speed sensor (FL) signal	Drive vehicle	Approximately system voltage
20	RR+	Wheel speed sensor (RR) power supply	Ignition switch: "ON"	Approximately system voltage
21	RR-	Wheel speed sensor (RR) signal	Drive vehicle	Approximately system voltage
22	-	-	-	-
23	CANL	CAN bus line	-	-
25	IG1	ABS-ECU power supply(IG1)	Ignition switch: "ON"	Battery voltage
25	IG1	ABS-ECU power supply(IG1)	Ignition switch: "OFF"	1 V or less
26-33	-	-	-	-
34	CANH	CAN bus line	-	-

RESISTANCE AND CONTINUITY BETWEEN HARNESS-SIDE CONNECTOR TERMINALS

1.Turn the ignition switch to the "LOCK" (OFF) position and disconnect the ABS-ECU connector before checking resistance and continuity.

2.Check the resistance and continuity between the terminals indicated in the table below.

3.The terminal layout is shown in the illustration.

Terminal No.	Terminal code	Signal	Normal condition
12	GND1	Earth	Continuity exists (2 Ω or less)
24	GND2	Earth	Continuity exists (2 Ω or less)