STOP AND START SYSTEM(for 1AD-FTV) 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
	Stop and start system operation prohibition based on the PM regeneration conditions (Refer to "Stop and Start System does not Operate (During PM Regeneration)")	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 U0140)	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 U0140)	Click here
	Front seat inner belt assembly (for driver side)	Click here
	Air conditioning system (system prohibits control)	Click here
	Air conditioning system (for Automatic Air Conditioning System)	Click here
	Air conditioning system (for Manual Air Conditioning System)	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 Click here Click here
	Neutral position switch circuit	Click here
	Crankshaft position sensor	Click here
	ECM	Click here
	Vacuum sensor assembly	Click here
	Brake booster assembly (for LHD)	Click here
	Brake booster assembly (for RHD)	Click here
	Starter assembly	Click here Click here
	The deceleration sensor zero point calibration is performed	Click here
	Deceleration sensor (airbag sensor assembly)	Click here
	Skid control ECU (brake actuator assembly)	Click here
	CAN communication system (for LHD)	Click here
	CAN communication system (for RHD)	Click here
	Engine stop and start ECU	Click here
	Battery*	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	Stop and start cancel switch circuit	Click here
	ECAN terminal voltage	Click here
	Stop and start system cancel switch (combination switch assembly)	Click here Click here
The engine is not stopped by stop and start control (stop and start operation is prohibited)	The shift lever is operated without depressing the clutch pedal (system operation prohibition)	Click here
	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 switch assembly (for upper)	Click here
	Engine stop and start ECU	Click here

*: If the vehicle has not been driven for a long time, the battery charge will be low and stop and start control operation will be prohibited. In this case, recharge the battery, initialize the integrated current value* and drive the vehicle until stop and start control operation is permitted (approximately 15 to 40 minutes).
*: Disconnect the cables from the battery, wait for 30 seconds or more and then reconnect the cables.

Tip:

When the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited for a certain amount of time. After connecting the cable, drive the vehicle until stop and start control is permitted (approximately 15 to 40 minutes).