STOP AND START SYSTEM

Disconnect the A91, A92 and F131 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
A91-5 (+B) - Body ground	B - Body ground	Power source of engine stop and start ECU	Ignition switch ON	9.5 to 14 V
A91-7 (BIN) - Body ground	B - Body ground	Battery	Always	9.5 to 14 V
A91-8 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
A92-10 (NE) - Body ground	V - Body ground	Engine speed signal from ECM	Always	10 kΩ or higher
A92-17 (VB-) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
F131-15 (CANH) - Body ground	BE - Body ground	CAN communication	Always	10 kΩ or higher
F131-16 (CANL) - Body ground	W - Body ground	CAN communication	Always	10 kΩ or higher
F131-17 (IG1) - Body ground	L - Body ground	Ignition switch signal	Ignition switch ON	9.5 to 14 V
F131-19 (ACC) - Body ground	L - Body ground	Ignition switch signal	Ignition switch ACC	9.5 to 14 V
F131-20 (IG2) - Body ground	P - Body ground	Ignition switch signal	Ignition switch ON	9.5 to 14 V

Reconnect the A91, A92 and F131 engine stop and start ECU connectors.

Measure the resistance, voltage and check for pulse according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A91-6 (OPO)*1 - A91-8 (GND)	SB - W-B	Oil pump with motor assembly (continuously variable transaxle assembly) drive power source signal	When the engine is stopped by stop and start control system, or when performing the AT Oil Pump Lo Drive of the Active Test	10 to 14 V
A92-3 (BRE2) - Body ground	R - Body ground	Ground (vacuum sensor assembly (brake booster pressure sensor))	Always	Below 1 Ω
A92-7 (BNT1) - A91-8 (GND)	P - W-B	Engine hood courtesy switch (hood lock assembly) signal	Ignition switch ON Engine stopped Engine hood closed	0 to 1.5 V
A92-7 (BNT1) - A91-8 (GND)	P - W-B	Engine hood courtesy switch (hood lock assembly) signal	Ignition switch ON Engine stopped Engine hood open	8 to 14 V
A92-9 (OPM1)*1 - A91-8 (GND)	P - W-B	Oil pump with motor assembly (continuously variable transaxle assembly) drive power source signal	When the engine is stopped by stop and start control system, or when performing the AT Oil Pump Lo Drive of the Active Test	Pulse generation (see waveform 1)
A92-10 (NE) - A91-8 (GND)	V - W-B	Engine speed signal from ECM	Idling after engine warmed up	Pulse generation (see waveform 2)
A92-11 (CLU)*2- A91-8 (GND)	B - W-B	Clutch start switch assembly (for upper) signal	Ignition switch ON Clutch pedal released	8 to 14 V
A92-11 (CLU)*2- A91-8 (GND)	B - W-B	Clutch start switch assembly (for upper) signal	Ignition switch ON Clutch pedal fully depressed	Below 1.5 V
A92-13 (PB) - A92-3 (BRE2)	LG - R	Vacuum sensor assembly (brake booster pressure sensor) signal	Ignition switch ON Absolute pressure of 40 kPa (0.4 kgf/cm², 5.8 psi) applied to vacuum sensor assembly (brake booster pressure sensor)	1.6 to 2.0 V
			Ignition switch ON Absolute pressure of 60 kPa (0.6 kgf/cm², 8.7 psi) applied to vacuum sensor assembly (brake booster pressure sensor)	2.2 to 2.6 V
			Ignition switch ON Atmospheric pressure applied to vacuum sensor assembly (brake booster pressure sensor)	3.4 to 3.8 V
A92-14 (BRVC) - A91-8 (GND)	G - W-B	Vacuum sensor assembly (brake booster pressure sensor) power supply	Ignition switch ON Engine stopped	4.5 to 5.5 V
A92-21 (STA) - A91-8 (GND)	P - W-B	Starter pinion activation signal	Cranking	6.0 V or more
A92-23*1 (STA2) - A91-8 (GND)	W - W-B	Starter motor activation signal	Cranking	6.0 V or more
A92-26 (TMVC)*2 - A91-8 (GND)	B - W-B	Neutral position switch power supply	Ignition switch ON Engine stopped	4.5 to 5.5 V
A92-27 (TMN)2- A92-25 (TME2)2	W - P	Neutral position switch signal	Ignition switch ON Shift lever in neutral	2.7 to 4.3 V
A92-27 (TMN)2- A92-25 (TME2)2	W - P	Neutral position switch signal	Ignition switch ON Shift lever in any other than neutral	0.7 to 1.9 V
A92-27 (OPST)*1 - A91-8 (GND)	V - W-B	Oil pump with motor assembly (continuously variable transaxle assembly) drive power source signal	Idling after engine warmed up	10 to 14 V
A92-27 (OPST)*1 - A91-8 (GND)	V - W-B		When the engine is stopped by stop and start control system, or when performing the AT Oil Pump Lo Drive of the Active Test	Pulse generation (see waveform 3)
A92-28 (CLL) - A91-8 (GND)	R - W-B	Park/neutral position switch signal*1	Ignition switch ON Shift lever in any other than N or P	8 to 14 V
		Park/neutral position switch signal*1	Ignition switch ON Shift lever in N or P	Below 3.0 V
		Clutch start switch assembly (for lower) signal*2	Ignition switch ON Clutch pedal released	8 to 14 V
		Clutch start switch assembly (for lower) signal*2	Ignition switch ON Clutch pedal fully depressed	Below 1.5 V
F131-2 (BO1) - A91-8 (GND)	SB - W-B	Backup boost converter signal	Always	9.5 to 14 V
F131-3 (ACO) - A91-8 (GND)	GR - W-B	Backup boost converter signal	Ignition switch ACC	9.5 to 14 V
F131-4 (CH1) - A91-8 (GND)*3	W - W-B	Combustion type Power heater system operating signal	Ignition switch ON Heater switch assembly on	9.5 to 14 V
F131-4 (CH1) - A91-8 (GND)*3	W - W-B	Combustion type Power heater system operating signal	Ignition switch ON Heater switch assembly off	Below 1 V
F131-11 (IGO2) - A91-8 (GND)	P - W-B	Backup boost converter signal	Ignition switch ON	9.5 to 14 V
F131-12 (IGO1) - A91-8 (GND)	B - W-B	Backup boost converter signal	Ignition switch ON	9.5 to 14 V
F131-17 (IG1) - A91-8 (GND)	L - W-B	Ignition switch signal	Ignition switch ACC	Below 1 V
F131-17 (IG1) - A91-8 (GND)	L - W-B	Ignition switch signal	Ignition switch ON	9.5 to 14 V
F131-19 (ACC) - A91-8 (GND)	L - W-B	Ignition switch signal	Ignition switch off	Below 1 V
F131-19 (ACC) - A91-8 (GND)	L - W-B	Ignition switch signal	Ignition switch ACC	9.5 to 14 V
F131-20 (IG2) - A91-8 (GND)	P - W-B	Ignition switch signal	Ignition switch ACC	Below 1 V
F131-20 (IG2) - A91-8 (GND)	P - W-B	Ignition switch signal	Ignition switch ON	9.5 to 14 V
F131-23 (ECAN) - A91-8 (GND)	SB - W-B	Stop and start cancel switch (warning canceling switch assembly) signal	Ignition switch ON Stop and start cancel switch (warning canceling switch assembly) pressed	0 to 1.5 V
F131-23 (ECAN) - A91-8 (GND)	SB - W-B		Ignition switch ON Stop and start cancel switch (warning canceling switch assembly) not pressed	8 to 14 V

*1: for CVT
*2: for Manual Transaxle
*3: w/ Combustion Type Power Heater System

Waveform 1

Oil Pump Assembly with Motor (Continuously Variable Transaxle Assembly) Directions Signal
Item	Content
Tester connection	OPM1 - GND
Tool setting	5 V/DIV., 5 ms./DIV.
Condition	When the engine is stopped by stop and start control system, or when performing the AT Oil Pump Lo Drive of the Active Test.

Waveform 2

Engine Speed Signal
Item	Content
Tester connection	NE - GND
Tool setting	5 V/DIV., 5 ms./DIV.
Condition	Idling after engine warmed up

Tech Tips

The wavelength become shorter as the engine speed increases.

Waveform 3

Oil Pump Assembly with Motor (Continuously Variable Transaxle Assembly) Speed Signal
Item	Content
Tester connection	OPST - GND
Tool setting	5 V/DIV., 5 ms./DIV.
Condition	When the engine is stopped by stop and start control system, or when performing the AT Oil Pump Lo Drive of the Active Test.

STOP AND START SYSTEM TERMINALS OF ECU