Toyota Yaris: Stop And Start System / Terminals Of Ecu

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Engine & Hybrid System / Stop And Start / Stop And Start System / Terminals Of Ecu

TERMINALS OF ECU

ENGINE STOP AND START ECU

(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
A66-1 (BIN2) - Body ground	Auxiliary battery	Always	9.5 to 14 V
A66-2 (GND2) - Body ground	Ground	Always	Below 1 Ω
A66-3 (BIN1) - Body ground	Auxiliary battery	Always	9.5 to 14 V
A66-8 (GND1) - Body ground	Ground	Always	Below 1 Ω
A67-1 (+B) - Body ground	Power source of engine stop and start ECU	Ignition switch ON	9.5 to 14 V
A67-6 (DGND) - Body ground	Ground	Always	Below 1 Ω
A67-10 (NE) - Body ground	Engine speed signal from ECM	Always	Pulse generation (see waveform 1)
H43-13 (CANH) - Body ground	CAN communication	Always	200 Ω or higher
H43-14 (CANL) - Body ground	CAN communication	Always	200 Ω or higher
H43-15 (LC1H) - Body round	Local bus communication line	Always	200 Ω or higher
H43-16 (LC1L) - Body round	Local bus communication line	Always	200 Ω or higher
H43-18 (IGP) - Body ground	Ignition switch signal	Ignition switch ON	9.5 to 14 V
H43-19 (ACC) - Body ground	Ignition switch signal	Ignition switch ACC	9.5 to 14 V
H43-21 (IGR) - Body ground	Ignition switch signal	Ignition switch ON	9.5 to 14 V

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
A67-3 (BRE2) - Body ground	Ground (vacuum sensor assembly)	Always	Below 1 Ω
A67-7 (BNT1) - A67-6 (DGND)	Engine hood courtesy switch (hood lock assembly) signal	Ignition switch ON Engine stopped Engine hood closed	Below 1.5 V
A67-7 (BNT1) - A67-6 (DGND)	Engine hood courtesy switch (hood lock assembly) signal	Ignition switch ON Engine stopped Engine hood open	8 to 14 V
A67-8 (TMN) - A67-25 (TME2)	Neutral position switch signal	Ignition switch ON Shift lever in neutral	2.7 to 4.3 V
A67-8 (TMN) - A67-25 (TME2)	Neutral position switch signal	Ignition switch ON Shift lever in any other than neutral	0.7 to 1.9 V
A67-10 (NE) - A67-6 (DGND)	Engine speed signal from ECM	Idling after engine warmed up	Pulse generation (See waveform 1)
A67-13 (PB) - A67-3 (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
A67-14 (BRVC) - A67-6 (DGND)	Vacuum sensor assembly power supply	Ignition switch ON Engine stopped	4.5 to 5.5 V
A67-17 (CLL) - A67-6 (DGND)	Clutch switch assembly signal	Ignition switch ON Clutch pedal released	8 to 14 V
A67-17 (CLL) - A67-6 (DGND)	Clutch switch assembly signal	Ignition switch ON Clutch pedal fully depressed	Below 1.5 V
A67-19 (DON2) - A67-6 (DGND)	External backup boost converter (eco run vehicle converter assembly) signal	Engine running	Pulse generation (See waveform 2)
A67-21 (STA) - A67-6 (DGND)	Starter pinion operation signal	Cranking	6.0 V or more
A67-26 (TMVC) - A67-6 (DGND)	Neutral position switch power supply	Ignition switch ON Engine stopped	4.5 to 5.5 V
H43-23 (IG31) - A67-6 (DGND)	Backup boost converter signal	Ignition switch ON	10.5 to 16 V
H43-3 (IG41) - A67-6 (DGND)	Backup boost converter signal	Ignition switch ON	10.5 to 16 V
H43-5 (ECAN) - A67-6 (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
H43-5 (ECAN) - A67-6 (DGND)		Ignition switch ON Stop and start system cancel switch (combination switch assembly) not pressed	8 to 14 V
H43-10 (IG12) - A67-6 (DGND)	Backup boost converter signal	Ignition switch ON	10.5 to 16 V
H43-11 (B43) - A67-6 (DGND)	Backup boost converter signal	Always	10.5 to 16 V
H43-18 (IGP) - A67-6 (DGND)	Ignition switch signal	Ignition switch ACC	Below 1 V
H43-18 (IGP) - A67-6 (DGND)	Ignition switch signal	Ignition switch ON	9.5 to 14 V
H43-19 (ACC) - A67-6 (DGND)	Ignition switch signal	Ignition switch off	Below 1 V
H43-19 (ACC) - A67-6 (DGND)	Ignition switch signal	Ignition switch ACC	9.5 to 14 V
H43-21 (IGR) - A67-6 (DGND)	Ignition switch signal	Ignition switch ACC	Below 1 V
H43-21 (IGR) - A67-6 (DGND)	Ignition switch signal	Ignition switch ON	9.5 to 14 V
H43-23 (IG31) - A67-6 (DGND)	Backup boost converter signal	Ignition switch ON	10.5 to 16 V

(e) Waveform 1

Item	Content
Tester Connection	A67-10 (NE) - A67-6 (DGND)
Tool Setting	5 V/DIV., 2 ms./DIV.
Condition	Idling after engine warmed up

(f) Waveform 2

Item	Content
Tester Connection	A67-19 (DON2) - A67-6 (DGND)
Tool Setting	5 V/DIV., 2 ms./DIV.
Condition	Engine running

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE Stop and Start System Symptom Suspected Area Link Stop and start system does not operate Refer to "Stop and Start System does not Operate" Refer to "Stop and Start System does not Operate (Battery Condition)" Restarting after a short period of time from an idling stop Refer to "Restarting after a Short Period of Time from an Idling Stop" After engine stops due to stop and start system, engine does not restart Refer to "After Engine Stops due to Stop and Start System, Engine does not Restart" Failure to restart from IG-ON engine stall Refer to "Failure to Restart from IG-ON Engine Stall" Stop and start cancel indicator does not operate Combination meter assembly Indicator circuit (CAN communication system) Engine stop and start ECU Stop and start indicator does not operate Combination meter assembly Indicator circuit (CAN communication system) Engine stop and start ECU Stop and start control cannot be canceled ECAN terminal voltage Stop and start cancel switch circuit Multi-information display screen does not change after pressing steering pad switch assembly...

Diagnosis System

DIAGNOSIS SYSTEM DESCRIPTION When troubleshooting a vehicle with a diagnosis system, the only difference from the usual troubleshooting procedure is connecting the GTS to the vehicle and reading various data output from the engine stop and start ECU...

Other information:

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Backup Boost Converter "A" Control CPU Signal Invalid (P060629)

DESCRIPTION The engine stop and start ECU can detect open circuits when signals such as the boost, standby request or overheating signal cannot be sent to the backup boost converter control IC from the stop and start control IC in the engine stop and start ECU...

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Room Light Bulb

ReplacementREPLACEMENT PROCEDURE 1. REMOVE NO. 1 ROOM LIGHT BULB (a) Using a screwdriver with its tip wrapped in protective tape, disengage the claws to remove the No. 1 room light lens as shown in the illustration. *a Protective Tape Remove in this Direction (b) Remove the No...