STOP AND START SYSTEM PROBLEM SYMPTOMS TABLE

Tip:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Table 1. Stop and Start System
Symptom	Suspected Area	Link
Stop and start system does not operate	Stop and start system operation prohibition based on the battery conditions (Refer to "Stop and Start System does not Operate (Battery Condition)")	Click here
	Engine hood courtesy switch circuit	Click here
	Driver door courtesy switch circuit (system prohibits control)	Click here
	Driver door courtesy switch circuit (CAN communication DTC U0155)	Click here
	Driver door courtesy switch circuit	Click here
	Driver seat belt buckle switch circuit (system prohibits control)	Click here
	Driver seat belt buckle switch circuit (CAN communication DTC U0155)	Click here
	Front seat inner belt assembly (for driver side)	Click here
	Air conditioning system (system prohibits control)*2	Click here
	Air conditioning system*2	Click here
	Air conditioning control panel circuit*3	Click here
	Brake booster vacuum is low (system prohibits control)	Click here
	Brake booster vacuum is low	Click here
	Backup boost converter circuit	Click here
	Neutral position switch circuit	Click here
	Crank position sensor	Click here
	ECM	Click here
	Vacuum sensor assembly	Click here
	Brake booster assembly*4	Click here
	Brake booster assembly*5	Click here
	Starter assembly	Click here
	The deceleration sensor 0 point calibration is performed	Click here
	Airbag sensor assembly (yaw rate sensor)	Click here
	Skid control ECU (brake actuator assembly)	Click here
	CAN communication system	Click here
	Engine stop and start ECU	Click here
	Battery*1	Click here
	Wire harness or connector	-
Stop and start cancel indicator light does not operate	Combination meter assembly	Click here
	Indicator circuit (CAN communication DTC U0155)	Click here
	Engine stop and start ECU	Click here
Stop and start indicator light does not operate	Combination meter assembly	Click here
	Indicator circuit (CAN communication DTC U0155)	Click here
	Engine stop and start ECU	Click here
Stop and start control cannot be canceled	ECAN terminal voltage	Click here
	Stop and start system cancel switch (ecorun cancel switch assembly (w/o Pre-crash Safety System) or combination switch assembly (w/ Pre-crash Safety System))	Click here
	Stop and start cancel switch circuit	Click here
Engine not stopped by stop and start control (stop and start operation prohibited)	Engine hood courtesy switch circuit	Click here
	Driver side door courtesy switch circuit	Click here
	Stop light switch assembly	Click here
	Clutch start switch assembly (for lower)	Click here
	Clutch start switch assembly (for upper)	Click here
	Engine stop and start ECU	Click here
	The shift lever is operated without depressing the clutch pedal (system operation prohibition)	Click here

*1: When the vehicle has not been used for a long period, the battery capacity decreases, and stop and start control is disabled. In this case, first charge the battery and then using the GTS, initialize the integrated current item.
Click here

Tip:
If the Data List item "Integrated Current" indicates 0 or more, initialization is not necessary.
*2: w/ Air Conditioning System
*3: except Automatic Air Conditioning System
*4: for LHD
*5: for RHD