STOP AND START SYSTEM

Disconnect the A37, A38 and I57 engine stop and start ECU connectors.

Measure the resistance and voltage according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A37-5 (+B) - Body ground	B - Body ground	Power source of engine stop and start ECU	Engine switch on (IG)	9.5 to 14 V
A37-7 (BIN) - Body ground	L - Body ground	Battery	Always	9.5 to 14 V
A37-8 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
A38-10 (NE) - Body ground	B - Body ground	Engine speed signal from ECM	Always	10 kΩ or higher
A38-17 (VB-) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
I57-15 (CANH) - Body ground	LG - Body ground	CAN communication	Always	200 Ω or higher
I57-16 (CANL) - Body ground	W - Body ground	CAN communication	Always	200 Ω or higher
I57-17 (IG1) - Body ground	L - Body ground	Engine switch signal	Engine switch on (IG)	9.5 to 14 V
I57-19 (ACC) - Body ground	R - Body ground	Engine switch signal	Engine switch on (ACC)	9.5 to 14 V
I57-20 (IG2) - Body ground	V - Body ground	Engine switch signal	Engine switch on (IG)	9.5 to 14 V

Reconnect the A37, A38 and I57 engine stop and start ECU connectors.

Measure the resistance and voltage according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A37-6 (OPO) - A37-8 (GND)	B - W-B	for 8AR-FTS: Oil pump assembly with motor (automatic transaxle assembly) drive power source signal for 3ZR-FAE: Oil pump assembly with motor (continuously variable transaxle assembly) drive power source signal	Either of the following conditions is met: Engine stopped by stop and start control Engine switch on (IG) (engine not running) and Active Test "AT Oil Pump (Lo)" being performed	10.5 to 16 V
A38-3 (BRE2) - Body ground	G - Body ground	Ground (vacuum sensor assembly (brake booster pressure sensor))	Always	Below 1 Ω
A38-7 (BNT1) - A37-8 (GND)	GR - W-B	Engine hood courtesy switch (Hood lock assembly) signal	Engine switch on (IG) Engine stopped Engine hood closed	0 to 1.5 V
A38-7 (BNT1) - A37-8 (GND)	GR - W-B	Engine hood courtesy switch (Hood lock assembly) signal	Engine switch on (IG) Engine stopped Engine hood open	8 to 14 V
A38-9 (OPM1) - A37-8 (GND)	P - W-B	for 8AR-FTS: Oil pump assembly with motor (automatic transaxle assembly) directions signal for 3ZR-FAE: Oil pump assembly with motor (continuously variable transaxle assembly) directions signal	Either of the following conditions is met: Engine stopped by stop and start control Engine switch on (IG) (engine not running) and Active Test "AT Oil Pump (Lo)" being performed	Pulse generation (see waveform 1)
A38-10 (NE) - A37-8 (GND)	B - W-B	Engine speed signal from ECM	Idling after engine warmed up	Pulse generation (see waveform 2)
A38-13 (PB) - A38-3 (BRE2)	B - G	Vacuum sensor assembly (Brake booster pressure sensor) signal	Engine switch on (IG) Absolute pressure of 40 kPa (300 mmHg, 11.8 in.Hg) applied to vacuum sensor assembly (brake booster pressure sensor)	1.6 to 2.0 V
			Engine switch on (IG) Absolute pressure of 60 kPa (450 mmHg, 17.7 in.Hg) applied to vacuum sensor assembly (brake booster pressure sensor)	2.2 to 2.6 V
			Engine switch on (IG) Atmospheric pressure applied to vacuum sensor assembly (brake booster pressure sensor)	3.4 to 3.8 V
A38-14 (BRVC) - A37-8 (GND)	P - W-B	Vacuum sensor assembly (Brake booster pressure sensor) power supply	Engine switch on (IG) Engine stopped	4.5 to 5.5 V
A38-21 (STA) - A37-8 (GND)	LG - W-B	Starter pinion operation signal	Cranking	6.0 V or more
A38-23 (STA2) - A37-8 (GND)	R - W-B	Starter motor operation signal	Cranking	6.0 V or more
A38-27 (NOPM) - A37-8 (GND)	L - W-B	for 8AR-FTS: Oil pump assembly with motor (automatic transaxle assembly) speed signal for 3ZR-FAE: Oil pump assembly with motor (continuously variable transaxle assembly) speed signal	Either of the following conditions is met: Engine stopped by stop and start control Engine switch on (IG) (engine not running) and Active Test "AT Oil Pump (Lo)" being performed	Pulse generation (see waveform 3)
A38-28 (CLL) - A37-8 (GND)	W - W-B	Park/neutral position switch assembly signal	Engine switch on (IG) Shift lever not in P or N	8 to 14 V
A38-28 (CLL) - A37-8 (GND)	W - W-B	Park/neutral position switch assembly signal	Engine switch on (IG) Shift lever in P or N	Below 3.0 V
I57-2 (BO1) - A37-8 (GND)	R - W-B	Backup boost converter signal	Always	10.5 to 16 V
I57-3 (ACO) - A37-8 (GND)	B - W-B	Backup boost converter signal	Engine switch on (ACC)	10.5 to 16 V
I57-9 (BO2) - A37-8 (GND)	P - W-B	Backup boost converter signal	Always	10.5 to 16 V
I57-11 (IGO2) - A37-8 (GND)	B - W-B	Backup boost converter signal	Engine switch on (IG)	10.5 to 16 V
I57-12 (IGO1) - A37-8 (GND)	L - W-B	Backup boost converter signal	Engine switch on (IG)	10.5 to 16 V
I57-17 (IG1) - A37-8 (GND)	L - W-B	Engine switch signal	Engine switch on (ACC)	Below 1 V
I57-17 (IG1) - A37-8 (GND)	L - W-B	Engine switch signal	Engine switch on (IG)	9.5 to 14 V
I57-19 (ACC) - A37-8 (GND)	R - W-B	Engine switch signal	Engine switch off	Below 1 V
I57-19 (ACC) - A37-8 (GND)	R - W-B	Engine switch signal	Engine switch on (ACC)	9.5 to 14 V
I57-20 (IG2) - A37-8 (GND)	V - W-B	Engine switch signal	Engine switch on (ACC)	Below 1 V
I57-20 (IG2) - A37-8 (GND)	V - W-B	Engine switch signal	Engine switch on (IG)	9.5 to 14 V
I57-23 (ECAN) - A37-8 (GND)	V - W-B	Stop and start system cancel switch (Integration control and panel assembly) signal	Engine switch on (IG) Stop and start system cancel switch (Integration control and panel assembly) pressed	0 to 1.5 V
I57-23 (ECAN) - A37-8 (GND)	V - W-B		Engine switch on (IG) Stop and start system cancel switch (Integration control and panel assembly) not pressed	8 to 14 V
I57-24 (DON2) - A37-8 (GND)	LG - W-B	Eco run vehicle converter assembly (external back-up boost converter) signal	Engine running	Pulse generation (see waveform 4)


*a	5 V/DIV.
*b	5 ms./DIV.

Waveform 1

Item	Content
Tester Connection	A38-9 (OPM1) - A37-8 (GND)
Tool Setting	5 V/DIV.,5 ms./DIV.
Condition	Either of the following conditions is met: Engine stopped by stop and start control Engine switch on (IG) (engine not running) and Active Test "AT Oil Pump (Lo)" being performed

Item

Content

Tester Connection

A38-9 (OPM1) - A37-8 (GND)

Tool Setting

5 V/DIV.,5 ms./DIV.

Condition

Either of the following conditions is met:

Engine stopped by stop and start control
Engine switch on (IG) (engine not running) and Active Test "AT Oil Pump (Lo)" being performed


*a	5 V/DIV.
*b	2 ms./DIV.

Waveform 2

Item	Content
Tester Connection	A38-10 (NE) - A37-8 (GND)
Tool Setting	5 V/DIV., 2 ms./DIV.
Condition	Idling after engine warmed up


*a	5 V/DIV.
*b	5 ms./DIV.

Waveform 3

Item	Content
Tester Connection	A38-27 (NOPM) - A37-8 (GND)
Tool Setting	5 V/DIV.,5 ms./DIV.
Condition	Either of the following conditions is met: Engine stopped by stop and start control Engine switch on (IG) (engine not running) and Active Test "AT Oil Pump (Lo)" being performed