STOP AND START SYSTEM TERMINALS OF ECU

ENGINE STOP AND START ECU

1. Disconnect the A61, A62 and F77 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
   A61-1 (BIN2) - Body ground	W - Body ground	Battery	Always	9.5 to 14 V
   A61-2 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   A61-3 (BIN1) - Body ground	B - Body ground	Battery	Always	9.5 to 14 V
   A61-8 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   A62-1 (+B) - Body ground	B - Body ground	Power source of engine stop and start ECU	Ignition switch ON	9.5 to 14 V
   A62-6 (DGND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   A62-10 (NE) - Body ground	L - Body ground	Engine speed signal from ECM	Always	10 kΩ or higher
   F77-13 (CANH) - Body ground	R - Body ground	CAN communication	Always	200 Ω or higher
   F77-14 (CANL) - Body ground	P - Body ground	CAN communication	Always	200 Ω or higher
   F77-18 (IG2) - Body ground	L - Body ground	Ignition switch signal	Ignition switch ON	9.5 to 14 V
   F77-19 (ACC) - Body ground	R - Body ground	Ignition switch signal	Ignition switch ACC	9.5 to 14 V
   F77-21 (IG1) - Body ground	V - Body ground	Ignition switch signal	Ignition switch ON	9.5 to 14 V

3. Reconnect the A61, A62 and F77 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
   A62-3 (BRE2) - Body ground	LG - Body ground	Ground (vacuum sensor assembly (brake booster pressure sensor))	Always	Below 1 Ω
   A62-7 (BNT1) - A62-6 (DGND)	R - W-B	Engine hood courtesy switch (Hood lock assembly) signal	Ignition switch ON Engine stopped Engine hood closed	0 to 1.5 V
   			Ignition switch ON Engine stopped Engine hood open	8 to 14 V
   A62-8 (TMN) - A62-25 (TME2)	V - GR	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
   A62-10 (NE) - A62-6 (DGND)	L - W-B	Engine speed signal from ECM	Idling after engine warmed up	Pulse generation (see waveform)
   A62-13 (PB) - A62-3 (BRE2)	V - LG	Vacuum sensor assembly (brake booster pressure sensor) signal	Ignition switch ON Absolute pressure of 40 kPa 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
   A62-14 (BRVC) - A62-6 (DGND)	P - W-B	Vacuum sensor assembly (brake booster pressure sensor) power supply	Ignition switch ON Engine stopped	4.5 to 5.5 V
   A62-17 (CLL) - A62-6 (DGND)	W - W-B	Clutch start switch assembly signal	Ignition switch ON Clutch pedal released	8 to 14 V
   			Ignition switch ON Clutch pedal fully depressed	Below 1.5 V
   A62-21 (STA) - A62-6 (DGND)	LG - W-B	Starter pinion operation signal	Cranking	6.0 V or more
   A62-26 (TMVC) - A62-6 (DGND)	W - W-B	Neutral position switch power supply	Ignition switch ON Engine stopped	4.5 to 5.5 V
   F77-1 (IG31) - A62-6 (DGND)	V - W-B	Backup boost converter signal	Ignition switch ON	10.5 to 16 V
   F77-2 (B41) - A62-6 (DGND)	SB - W-B	Backup boost converter signal	Always	10.5 to 16 V
   F77-3 (IG41) - A62-6 (DGND)	BE- W-B	Backup boost converter signal	Ignition switch ON	10.5 to 16 V
   F77-5 (ECAN) - A62-6 (DGND)	P - W-B	Stop and start system cancel switch (Electric parking brake switch assembly) signal	Ignition switch ON Stop and start system cancel switch (Electric parking brake switch assembly) pressed	0 to 1.5 V
   			Ignition switch ON Stop and start system cancel switch (Electric parking brake switch assembly) not pressed	8 to 14 V
   F77-6 (IG11) - A62-6 (DGND)	LG - W-B	Backup boost converter signal	Ignition switch ON	10.5 to 16 V
   F77-10 (IG12) - A62-6 (DGND)	P - W-B	Backup boost converter signal	Ignition switch ON	10.5 to 16 V
   F77-12 (B42) - A62-6 (DGND)	SB - W-B	Backup boost converter signal	Always	10.5 to 16 V
   F77-18 (IG2) - A62-6 (DGND)	L - W-B	Ignition switch signal	Ignition switch ACC	Below 1 V
   			Ignition switch ON	9.5 to 14 V
   F77-19 (ACC) - A62-6 (DGND)	R - W-B	Ignition switch signal	Ignition switch off	Below 1 V
   			Ignition switch ACC	9.5 to 14 V
   F77-21 (IG1) - A62-6 (DGND)	V - W-B	Ignition switch signal	Ignition switch ACC	Below 1 V
   			Ignition switch ON	9.5 to 14 V
   F77-24 (AC41) - A62-6 (DGND)	GR - W-B	Backup boost converter signal	Ignition switch ACC	10.5 to 16 V

5. 

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

   Waveform

   Item	Content
   Tester Connection	A62-10 (NE) - A62-6 (DGND)
   Tool Setting	5 V/DIV., 2 ms./DIV.
   Condition	Idling after engine warmed up