QUICK DIAGNOSTIC CHART [SKYACTIV-D 1.5]

id1103q4000400

×: Applicable

—: Not applicable

Troubleshooting item		Intake air system
		Intake air system part		Air cleaner			Intake shutter valve		Compressor	Electric water pump
		Air suction/Leakage/Perforation	Clogging	Deformation	Air cleaner element restricted	Non-genuine part installation	Does not fully close (Does not conform to target value)	Clogging, sticking	Improper operation	Improper operation
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Intake air system				Exhaust system
		Water-cooled charge air cooler		Improper installation of turbocharger with variable turbine geometry	Interference with housing of turbo rotational mechanism	Each exhaust system part		Turbocharger with variable turbine geometry	Turbocharger actuator	Turbocharger solenoid valve
		Coolant leakage	Coolant passage restriction		Interference with housing of turbo rotational mechanism	Leakage	Clogging (mostly in oxidation catalytic converter for diesel, diesel particulate filter)	Improper operation	Improper operation	Improper operation
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Exhaust system
		HP-EGR control valve	LP-EGR control valve	Exhaust shutter valve	LP-EGR cooler		HP-EGR control valve	LP-EGR control valve	EGR filter	Diesel particulate filter
		Improper operation	Improper operation	Improper operation	Leakage (gas)	Clogging	Clogging	Clogging	Clogging	Loss
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Fuel system
		Fuel line	Fuel filter		Fuel warmer	Jet pump (4WD)	Supply pump	Suction control valve		Fuel pressure relief valve
		Leakage	Leakage	Clogging	Improper operation	Improper operation	Poor discharge amount	Low adjusted pressure value	High adjusted pressure value	Low adjusted pressure value	High adjusted pressure value
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	×	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	×	×	×	—	×	×
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Fuel system
		Fuel check valve	Fuel feed valve	Fuel system/Fuel injection system malfunction (such as leakage)	Sedimentor switch		Fuel injector
		Improper operation	Improper operation		Always on	Always off	Open circuit in drive circuit	Short circuit in drive circuit	Leakage	Restricted or clogged	Always open	Always close	QR code mismatch
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	×	×	×	—	—	—	—	×	×	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Fuel system			Control system
		Fuel injector	Fuel		PCM				Main relay
		Injection amount correction miss-match	Low cetane value	Inferior constituent	No initiation	No configuration	No learning	Open circuit in back-up power supply circuit of PCM	Always off	Always on
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	×	×	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	×	×	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Control system (PCM input signal)
		MAF sensor			Intake shutter valve position sensor		APP sensor		CKP sensor			CMP sensor
		High input	Low input	Open or short circuit in signal circuit	Erratic signal input	Open or short circuit in signal circuit	Erratic signal input	Open or short circuit in signal circuit	False signal output (no noise, pulse)	Open or short circuit in signal circuit	Engine speed signal	False signal output (no noise, pulse)	Open or short circuit in signal circuit
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Control system (PCM input signal)
		ECT sensor			IAT sensor No.1			Boost air temperature sensor			IAT sensor No.2
		High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	×	×	—	×	×	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	×	—	—	×	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Control system (PCM input signal)
		MAP sensor			Fuel temperature sensor			Fuel pressure sensor
		High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	×	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Control system (PCM input signal)
		Exhaust gas temperature sensor No.1			Exhaust gas pressure sensor No.1			Engine oil temperature sensor			Engine oil pressure sensor
		High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Control system (PCM input signal)
		Exhaust gas temperature sensor No.2			Exhaust gas temperature sensor No.3			Exhaust gas temperature sensor No.4			Exhaust gas pressure sensor No.2
		High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Control system (PCM input signal)
		A/F sensor			BARO sensor (built-into PCM)			HP-EGR control valve position sensor		LP-EGR control valve position sensor		Exhaust shutter valve position sensor		Speed sensor assy (turbocharger with variable turbine geometry)
		High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit	Erratic signal input	Open or short circuit in signal circuit	Erratic signal input	Open or short circuit in signal circuit	Erratic signal input	Open or short circuit in signal circuit	Erratic signal input	Open or short circuit in signal circuit
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	×	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	×	—	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Control system (PCM input signal)
		Actuator position sensor (turbocharger with variable turbine geometry)		Generator output current signal			Refrigerant pressure sensor			Check connector	CPP switch (MTX)		Starter interlock switch (MTX)
		Erratic signal input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit	High input	Low input	Open or short circuit in signal circuit	Open circuit	Always on	Always off	Always on	Always off
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	×	×	×	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	×	×	×	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	×	×	×	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Control system (PCM input signal)								Control system (PCM output signal)
		Brake switch (No.1 signal)		Brake switch (No.2 signal)		Neutral switch (MTX)		Back-up light switch (MTX)		Fan control module control circuit
		Always on	Always off	Always on	Always off	Always on	Always off	Always on	Always off	Open circuit in power supply circuit	Control signal circuit always on	Control signal circuit always off	Open circuit in ground circuit
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Control system (PCM output signal)
		A/C relay circuit			Generator control signal	Starter relay circuit			Blow-by heater relay circuit
		Open circuit in circuit on coil side	Circuit on switch side constantly on	Circuit on switch side constantly off	Open or short circuit	Open circuit in circuit on coil side	Circuit on switch side constantly on	Circuit on switch side constantly off	Open circuit in circuit on coil side	Circuit on switch side constantly on	Circuit on switch side constantly off
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	×	—	×	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	×	×	×	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Control system (PCM output signal)						Mechanical
		Glow control module control signal				A/F sensor heater		Each engine internal part
		Open circuit in power supply circuit	Control signal circuit constantly energizes (FET malfunction)	Control signal circuit always off	Open circuit in ground circuit	Always on	Always off	Large mechanical resistance	Deviation in valve timing	Abnormal compression pressure	No compression in specific cylinder	No compression in all cylinders
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	×	×	—	—	×
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	×	×	×	×	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Mechanical
		Each engine internal part				Blow-by heater		Engine oil solenoid valve
		Bad compression in specific cylinder	Bad compression in all cylinders	Oil working up or down	Piston ring malfunction	Always on	Always off	Open circuit in drive circuit	Short circuit in drive circuit	Valve stuck open	Valve stuck close
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	×	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	×	×	×	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Mechanical	Lubrication system				Cooling system
		Belts for engine accessories	Engine oil				Engine coolant passage		Coolant control valve	Cooling fan motor
		Slippage	Inferior constituent	Leakage	Clogging	Improper level	Restricted or clogged	Leakage	Improper operation	Improper operation
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Charging system
		Battery		Generator			Starter		Glow plug
		Does not charge	No discharge (deterioration)	Low power generation voltage	No power generation	High power generation	Open/short circuit in drive circuit	Internal malfunction	Always off	Always on
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	×	×	×	—	×	×	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	×	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	×	×	—	—
7	Limited i-stop function operation time	×	×	×	×	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Emission system	ATX					Other
		Catalytic converter (diesel particulate filter)	ATF		Automatic transaxle			Engine mount	Instrument cluster	Brake	Tire
		Deterioration or loss	Oil cooler restriction	Lack of ATF	TCC non-operation	Constant lockup	Abnormal shift point	Looseness	Improper operation	Drag	Low air pressure
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	×	—	—	×	—	—	×	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	×	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Other
		Vehicle electric devices			A/C compressor	Immobilizer system		Advanced keyless entry system	Climate control unit	Magnetic clutch
		Remote transmitter left in vehicle cabin	Large amount of parasitic draw	Large power consumption	Large mechanical resistance	Improper operation	Unprogrammed remote transmitter	Improper operation	Improper operation	Improper operation
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	—	×	×	—	×	—	×	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	—	—	—	—	—	—
6	Engine does not restart	—	—	—	—	—	—	×	—	—
7	Limited i-stop function operation time	—	—	×	—	—	—	×	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	×	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		i-stop
		i-stop OFF signal malfunction	i-stop OFF switch malfunction	Bonnet latch switch		Door latch switch or trunk lid latch switch (4SD)/liftgate latch switch (5HB)		False detection of driver-side buckle switch		Instrument cluster malfunction	Number of times i-stop function operates exceeds assured operation amount of components	Ambient temperature sensor
		i-stop OFF signal malfunction	i-stop OFF switch malfunction	Stuck open	Stuck close	Stuck open	Stuck close	Stuck off	Stuck on	Instrument cluster malfunction		Erratic signal input
1	i-stop warning light (amber) illuminates	×	×	—	—	—	—	—	—	×	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—	—	×	×	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	×	—	—
4	i-stop function does not operate	×	—	×	—	×	—	×	—	×	×	×
5	i-stop function operates under no engine-stop conditions	—	—	—	×	—	×	—	×	×	—	×
6	Engine does not restart	×	—	—	—	—	—	—	—	—	—	×
7	Limited i-stop function operation time	×	—	—	—	—	—	—	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—	—	×
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		i-stop
		Cabin temperature sensor	Solar radiation sensor	Driver-side air mix actuator malfunction	Driver-side air mix actuator position sensor	Steering angle sensor		DEFROSTER switch malfunction (with full-auto air conditioner system)	MODE dial malfunction (with manual air conditioner system)	Low power brake unit load	Power brake unit vacuum sensor
		Erratic signal input	Erratic signal input	Driver-side air mix actuator malfunction	Erratic signal input	Erratic signal input	Initialization malfunction		MODE dial malfunction (with manual air conditioner system)	Low power brake unit load	Erratic signal input
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	×	—	—	—	—	×
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	×	—	×	×	×	—	×	×	×	×
5	i-stop function operates under no engine-stop conditions	×	—	×	×	×	×	—	—	×	×
6	Engine does not restart	×	—	—	—	×	—	—	—	—	×
7	Limited i-stop function operation time	—	—	×	×	×	×	×	×	×	×
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	×	×	×	×	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	—	—	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		i-stop
		Battery management system malfunction	Brake fluid pressure sensor (built-into DSC HU/CM)	M position switch malfunction (ATX)	Low-G (XY) sensor (built-into SAS control module)	TFT sensor (ATX)	Electric AT oil pump malfunction (ATX)	DSC HU/CM malfunction	Generator drive belt wear	Ignition switch signal (PCM terminal 2H)
		Battery management system malfunction	Brake fluid pressure sensor (built-into DSC HU/CM)	Erratic signal input	Erratic signal input	Erratic signal input	Electric AT oil pump malfunction (ATX)	DSC HU/CM malfunction	Generator drive belt wear	Stuck on
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	×	×	—	×	×	×	×	×	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—	—	—
4	i-stop function does not operate	×	×	×	×	×	×	×	×	—
5	i-stop function operates under no engine-stop conditions	—	×	—	×	×	—	—	—	—
6	Engine does not restart	×	—	×	—	—	—	—	—	—
7	Limited i-stop function operation time	×	×	×	—	×	—	—	—	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	×	—	×	—	×	×	×	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	×	—	×	—	×	×	—	—

*1 :Vehicles with full-auto air conditioner system

*2 :ATX

×: Applicable

—: Not applicable

Troubleshooting item		Other			i-stop
		Active air shutter			Brake switch	EPS control module malfunction	Clutch stroke sensor malfunction	DC-DC converter malfunction
		Stuck	Improper operation of control module	Open or short circuit in signal circuit	Erratic signal input	EPS control module malfunction	Clutch stroke sensor malfunction	DC-DC converter malfunction
1	i-stop warning light (amber) illuminates	—	—	—	—	—	—	—
2	i-stop warning light (amber) flashes	—	—	—	—	—	—	—
3	i-stop indicator light (green) flashes	—	—	—	—	—	—	—
4	i-stop function does not operate	—	—	—	—	—	—	—
5	i-stop function operates under no engine-stop conditions	—	—	—	×	×	—	—
6	Engine does not restart	—	—	—	—	—	—	—
7	Limited i-stop function operation time	—	—	—	—	×	×	—
8^*1	Ineffective operation of A/C during engine stop (i-stop system)	—	—	—	—	—	—	—
9^*2	Acceleration malfunction	—	—	—	—	—	—	—
10^*2	Vehicle moves when accelerating from standstill on slope	—	—	—	—	—	—	×

*1 :Vehicles with full-auto air conditioner system

*2 :ATX