RM38T0EC _51 Engine / Hybrid System _115233 STOP AND START _0510781 STOP AND START SYSTEM U

STOP AND START  STOP AND START SYSTEM  TERMINALS OF ECU  


ENGINE STOP AND START ECU


B412468N19
5.031,0.219 5.458,0.469 0.427,0.25 3.219,0.208 3.646,0.458 0.427,0.25 1.563,0.208 1.99,0.458 0.427,0.25 3.26,0.229 3.719,0.427 0.458,0.198 10 false A169 1.604,0.229 2.094,0.427 0.49,0.198 10 false A168 5.104,0.24 5.563,0.438 0.458,0.198 10 false I230

a.

Disconnect the engine stop and start ECU connectors.


b.

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

Terminal No. (Symbol) Terminal Description Condition Specified Condition
A168-1 (BIN2) - Body ground Auxiliary battery Always 9.5 to 14 V
A168-2 (GND2) - Body ground Ground Always Below 1 Ω
A168-3 (BIN1) - Body ground Auxiliary battery Always 9.5 to 14 V
A168-8 (GND1) - Body ground Ground Always Below 1 Ω
A169-1 (+B) - Body ground Power source of engine stop and start ECU Ignition switch ON 9.5 to 14 V
A169-6 (DGND) - Body ground Ground Always Below 1 Ω
A169-10 (NE) - Body ground Engine speed signal from ECM Always 10 kΩ or higher
I230-13 (CANH) - Body ground CAN communication Always 200 Ω or higher
I230-14 (CANL) - Body ground CAN communication Always 200 Ω or higher
I230-15 (LC1H) - Body round Local bus communication line Always 200 Ω or higher
I230-16 (LC1L) - Body round Local bus communication line Always 200 Ω or higher
I230-18 (IGP) - Body ground Ignition switch signal Ignition switch ON 9.5 to 14 V
I230-19 (ACC) - Body ground Ignition switch signal Ignition switch ACC 9.5 to 14 V
I230-21 (IGR) - Body ground Ignition switch signal Ignition switch ON 9.5 to 14 V


c.

Reconnect the engine stop and start ECU connectors.


d.

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

Terminal No. (Symbol) Terminal Description Condition Specified Condition

*: Production Date from 2022/01 to 2023/04

A168-6 (OP21) - A169-6 (DGND) Oil pump with motor assembly drive power source signal One of the following conditions is met:
·

Engine stopped by stop and start system control

·

Ignition switch ON (engine not running) and Active Test "Oil Pump" being performed


10.5 to 16 V
A169-3 (BRE2) - Body ground Ground (vacuum sensor assembly) Always Below 1 Ω
A169-7 (BNT1) - A169-6 (DGND) Engine hood courtesy switch (hood lock with courtesy light switch assembly) signal
·

Ignition switch ON

·

Engine stopped

·

Engine hood closed


Below 1.5 V
·

Ignition switch ON

·

Engine stopped

·

Engine hood open


8 to 14 V
A169-9 (OPM1) - A169-6 (DGND) Oil pump with motor assembly directions signal One of the following conditions is met:
·

Engine stopped by stop and start system control

·

Ignition switch ON (engine not running) and Active Test "Oil Pump" being performed


Pulse generation
(See waveform 1)
A169-10 (NE) - A169-6 (DGND) Engine speed signal from ECM Idling after engine warmed up Pulse generation
(See waveform 2)
A169-13 (PB) - A169-3 (BRE2) 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
A169-14 (BRVC) - A169-6 (DGND) Vacuum sensor assembly power supply
·

Ignition switch ON

·

Engine stopped


4.5 to 5.5 V
A169-17 (CLL)* - A169-6 (DGND) Park/Neutral position switch assembly signal
·

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
A169-21 (STA) - A169-6 (DGND) Starter pinion operation signal Cranking 6.0 V or more
A169-27 (NOPM) - A169-6 (DGND) Oil pump with motor assembly speed signal One of the following conditions is met:
·

Engine stopped by stop and start system control

·

Ignition switch ON (engine not running) and Active Test "Oil Pump" being performed


Pulse generation
(See waveform 3)
I230-23 (IG31) - A169-6 (DGND) Backup boost converter signal Ignition switch ON 10.5 to 16 V
I230-2 (B41) - A169-6 (DGND) Backup boost converter signal Always 10.5 to 16 V
I230-3 (IG41) - A169-6 (DGND) Backup boost converter signal Ignition switch ON 10.5 to 16 V
I230-5 (ECAN) - A169-6 (DGND) Stop and start system cancel switch (combination switch assembly) signal
·

Ignition switch ON

·

Stop and start system cancel switch (combination switch assembly) pressed


Below 1.5 V
·

Ignition switch ON

·

Stop and start system cancel switch (combination switch assembly) not pressed


8 to 14 V
I230-10 (IG12) - A169-6 (DGND) Backup boost converter signal Ignition switch ON 10.5 to 16 V
I230-11 (B43) - A169-6 (DGND) Backup boost converter signal Always 10.5 to 16 V
I230-12 (B42) - A169-6 (DGND) Backup boost converter signal Always 10.5 to 16 V
I230-18 (IGP) - A169-6 (DGND) Ignition switch signal Ignition switch ACC Below 1 V
Ignition switch ON 9.5 to 14 V
I230-19 (ACC) - A169-6 (DGND) Ignition switch signal Ignition switch off Below 1 V
Ignition switch ACC 9.5 to 14 V
I230-21 (IGR) - A169-6 (DGND) Ignition switch signal Ignition switch ACC Below 1 V
Ignition switch ON 9.5 to 14 V
I230-26 (AC42) - A169-6 (DGND) Backup boost converter signal Ignition switch ACC 10.5 to 16 V


e.
A329962E11
2.885,1.25 3.344,1.448 0.458,0.198 10 false GND

Waveform 1

Item Content
Tester Connection A169-9 (OPM1) - A169-6 (DGND)
Tool Setting 5 V/DIV., 5 ms./DIV.
Condition One of the following conditions is met:
·

Engine stopped by stop and start control

·

Ignition switch ON (engine not running) and Active Test "Oil Pump" being performed




f.
A318633E22
2.792,1.042 3.25,1.24 0.458,0.198 10 false GND

Waveform 2

Item Content
Tester Connection A169-10 (NE) - A169-6 (DGND)
Tool Setting 5 V/DIV., 2 ms./DIV.
Condition Idling after engine warmed up


g.
A112562E19
2.844,1.219 3.156,1.375 0.313,0.156 10 false GND

Waveform 3

Item Content
Tester Connection A169-27 (NOPM) - A169-6 (DGND)
Tool Setting 5 V/DIV., 5 ms./DIV.
Condition One of the following conditions is met:
·

Engine stopped by stop and start control

·

Ignition switch ON (engine not running) and Active Test "Oil Pump" being performed