STOP AND START SYSTEM TERMINALS OF ECU

ENGINE STOP AND START ECU

1. Disconnect the G125, G126 and G127 engine stop and start ECU connectors.

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

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   G125-1 (BIN2) - Body ground	L - Body ground	Battery	Always	9.5 to 14 V
   G125-2 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   G125-3 (BIN1) - Body ground	R - Body ground	Battery	Always	9.5 to 14 V
   G125-8 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   G126-1 (+B) - Body ground	Y - Body ground	Power source of engine stop and start ECU	Ignition switch ON	9.5 to 14 V
   G126-6 (DGND) - Body ground	BR - Body ground	Ground	Always	Below 1 Ω
   G126-10 (NE) - Body ground	SB - Body ground	Engine speed signal from ECM	Always	10 kΩ or higher
   G127-13 (CANH) - Body ground	P - Body ground	CAN communication	Always	200 Ω or higher
   G127-14 (CANL) - Body ground	W - Body ground	CAN communication	Always	200 Ω or higher
   G127-18 (IG2) - Body ground	Y - Body ground	Ignition or starter switch assembly (w/o Entry and Start System) or push start switch assembly (w/ Entry and Start System) signal	Ignition switch ON	9.5 to 14 V
   G127-19 (ACC) - Body ground	GR - Body ground	Ignition or starter switch assembly (w/o Entry and Start System) or push start switch assembly (w/ Entry and Start System) signal	Ignition switch ACC	9.5 to 14 V
   G127-21 (IG1) - Body ground	R - Body ground	Ignition or starter switch assembly (w/o Entry and Start System) or push start switch assembly (w/ Entry and Start System) signal	Ignition switch ON	9.5 to 14 V

3. Reconnect the G125, G126 and G127 engine stop and start ECU connectors.

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

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   G126-3 (BRE2) - Body ground	Y - Body ground	Ground (vacuum sensor assembly)	Always	Below 1 Ω
   G126-7 (BNT1) - G126-6 (DGND)	Y - BR	Engine hood courtesy switch (Hood lock assembly) signal	Ignition switch ON Engine hood closed	0 to 1.5 V
   			Ignition switch ON Engine hood open	8 to 14 V
   G126-10 (NE) - G126-6 (DGND)	SB - BR	Engine speed signal from ECM	Idling after engine warmed up	Pulse generation (see waveform 1)
   G126-11 (CLU) - G126-6 (DGND)*2	P - BR	Clutch switch assembly (for upper) signal	Ignition switch ON Clutch pedal released	Below 1.5 V
   			Ignition switch ON Clutch pedal fully depressed	8 to 14 V
   G126-26 (TMVC) - G126-25 (TME2)*2	B - R	Neutral position sensor (neutral position switch) power supply	Ignition switch ON	4.5 to 5.5 V
   G126-8 (TMN) - G126-25 (TME2)*2	LG - R	Neutral position sensor (neutral position switch) signal	Ignition switch ON Shift lever in neutral	2.7 to 4.3 V
   			Ignition switch ON Shift lever in any other than neutral	0.7 to 1.9 V
   G126-13 (PB) - G126-3 (BRE2)	B - Y	Vacuum sensor assembly signal	Ignition switch ON Absolute pressure of 40 kPa (300 mmHg, 11.8 in.Hg) applied to vacuum sensor assembly	1.6 to 2.0 V
   			Ignition switch ON Absolute pressure of 60 kPa (450 mmHg, 17.7 in.Hg) applied to vacuum sensor assembly	2.2 to 2.6 V
   			Ignition switch ON Atmospheric pressure applied to vacuum sensor assembly	3.4 to 3.8 V
   G126-14 (BRVC) - G126-6 (DGND)	P - BR	Vacuum sensor assembly power supply	Ignition switch ON Engine stopped	4.5 to 5.5 V
   G126-17 (CLL) - G126-6 (DGND)	L - BR	Park/neutral position switch assembly signal*1	Ignition switch ON Shift lever not in P or N	8 to 14 V
   			Ignition switch ON Shift lever in P or N	Below 3.0 V
   		Clutch start switch assembly (for lower) signal*2	Ignition switch ON Clutch pedal released	8 to 14 V
   			Ignition switch ON Clutch pedal fully depressed	Below 1.5 V
   G126-21 (STA) - G126-6 (DGND)	G - BR	Starter pinion operation signal	Cranking	6.0 V or more
   G126-23 (STA2) - G126-6 (DGND)	GR - BR	Starter motor operation signal	Cranking	6.0 V or more
   G127-1 (IG31) - G126-6 (DGND)	L - BR	Backup boost converter signal	Ignition switch ON	10.5 to 16 V
   G127-3 (IG41) - G126-6 (DGND)	L - BR	Backup boost converter signal	Ignition switch ON	10.5 to 16 V
   G127-5 (ECAN) - G126-6 (DGND)	V - BR	Stop and start system cancel switch (ecorun cancel switch assembly) signal	Ignition switch ON Stop and start system cancel switch (ecorun cancel switch assembly) push and held	0 to 1.5 V
   			Ignition switch ON Stop and start system cancel switch (ecorun cancel switch assembly) not pressed	8 to 14 V
   G127-8 (EGND) - G125-8 (GND1)*1	R - W-B	Electromagnetic oil pump directions signal	Either of the following conditions is met: Engine stopped by stop and start control Ignition switch ON (engine not running) and Active Test "Electromagnetic Oil Pump" being performed	Pulse generation (see waveform 2)
   G127-9 (EMOP) - G125-8 (GND1)*1	W - W-B	Electromagnetic oil pump directions signal	Either of the following conditions is met: Engine stopped by stop and start control Ignition switch ON (engine not running) and Active Test "Electromagnetic Oil Pump" being performed	Pulse generation (see waveform 2)
   G127-10 (IG12) - G126-6 (DGND)	Y - BR	Backup boost converter signal	Ignition switch ON	10.5 to 16 V
   G127-12 (B42) - G126-6 (DGND)	SB - BR	Backup boost converter signal	Always	10.5 to 16 V
   G127-15 (AC42) - G126-6 (DGND)	GR - BR	Backup boost converter signal	Ignition switch ACC	10.5 to 16 V
   G127-18 (IG2) - G126-6 (DGND)	Y - BR	Ignition or starter switch assembly (w/o Entry and Start System) or push start switch assembly (w/ Entry and Start System) signal	Ignition switch ACC	Below 1 V
   			Ignition switch ON	9.5 to 14 V
   G127-19 (ACC) - G126-6 (DGND)	GR - BR	Ignition or starter switch assembly (w/o Entry and Start System) or push start switch assembly (w/ Entry and Start System) signal	Ignition switch off	Below 1 V
   			Ignition switch ACC	9.5 to 14 V
   G127-21 (IG1) - G126-6 (DGND)	R - BR	Ignition or starter switch assembly (w/o Entry and Start System) or push start switch assembly (w/ Entry and Start System) signal	Ignition switch ACC	Below 1 V
   			Ignition switch ON	9.5 to 14 V

   *1: for Automatic Transmission

   *2: for Manual Transmission

5. 

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

   Waveform 1

   Item	Content
   Tester Connection	G126-10 (NE) - G126-6 (DGND)
   Tool Setting	5 V/DIV., 2 ms./DIV.
   Condition	Idling after engine warmed up

6. 

   *1	10 V/DIV.
   *2	20 ms./DIV.

   Waveform 2

   Item	Content
   Tester Connection	G127-8 (EGND) - G125-8 (GND1) G127-9 (EMOP) - G125-8 (GND1)
   Tool Setting	10 V/DIV., 20 ms./DIV.
   Condition	Either of the following conditions is met: Engine stopped by stop and start control Ignition switch ON (engine not running) and Active Test "Electromagnetic Oil Pump" being performed