QUICK DIAGNOSTIC CHART [SKYACTIV-D 1.5]


id0103q2052800

×: 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
Blown fuses
2
Check engine light illuminates
×
×
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
×
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
×
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
×
×
20
Emission compliance
×
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
×
×
×
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: Applicable
—: Not applicable

Troubleshooting item

Intake air system

Exhaust system

Water-cooled charge air cooler

Improper installation of turbocharger

Interference with housing of turbo rotational mechanism

Each exhaust system part

Variable turbine geometry turbocharger

Turbocharger actuator

Turbocharger solenoid valve

Leakage

Clogging

Leakage

Clogging (mostly in oxidation catalytic converter for diesel, diesel particulate filter)

Improper operation

Improper operation

Improper operation

1
Blown fuses
2
Check engine light illuminates
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
×
×
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
18
Knocking/pinging-acceleration/cruise
×
19
Poor fuel economy
×
×
×
×
20
Emission compliance
21
High oil consumption/leakage
×
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
×
×
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
18
Knocking/pinging-acceleration/cruise
×
×
19
Poor fuel economy
×
×
×
20
Emission compliance
×
×
×
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
×
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: Applicable
—: Not applicable

Troubleshooting item

Fuel system

Fuel line

Fuel filter

Fuel warmer

Supply pump

Suction control valve

Fuel pressure relief valve

Leakage

Leakage

Clogging

Improper operation

Poor discharge amount

Low adjusted pressure value

High adjusted pressure value

Low adjusted pressure value

High adjusted pressure value

1
Blown fuses
2
Check engine light illuminates
×
×
×
×
×
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item
 

×: Applicable
—: Not applicable

Troubleshooting item

Fuel system

Fuel system/Fuel injection system malfunction (such as leakage)

Fuel injector

Open circuit in drive circuit

Short circuit in drive circuit

Leakage

Restricted or clogged

Always open

Always close

QR code mismatch

1
Blown fuses
2
Check engine light illuminates
×
×
×
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
×
11
Engine stalls-after start/at idle
×
12
Cranks normally but will not start
×
13
Engine runs rough/rolling idle
×
14
Fast idle/runs on
×
15
Low idle/stalls during deceleration
×
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
×
17
Lack/loss of power-acceleration/cruise
×
18
Knocking/pinging-acceleration/cruise
×
19
Poor fuel economy
20
Emission compliance
×
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
×
26
Engine noise
27
Vibration concerns (engine)
×
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
×
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
×
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
×
×
10
Hard to start/long crank/erratic start/erratic crank
×
×
×
11
Engine stalls-after start/at idle
×
×
×
12
Cranks normally but will not start
×
×
×
13
Engine runs rough/rolling idle
×
×
×
×
14
Fast idle/runs on
15
Low idle/stalls during deceleration
×
×
×
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
×
×
×
17
Lack/loss of power-acceleration/cruise
×
×
×
18
Knocking/pinging-acceleration/cruise
×
×
19
Poor fuel economy
×
×
×
20
Emission compliance
×
×
×
×
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
×
27
Vibration concerns (engine)
×
×
×
×
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
×
×
×
×
×
×
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
×
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
×
×
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
×
×
11
Engine stalls-after start/at idle
×
×
12
Cranks normally but will not start
×
×
13
Engine runs rough/rolling idle
×
×
14
Fast idle/runs on
15
Low idle/stalls during deceleration
×
×
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
×
×
17
Lack/loss of power-acceleration/cruise
×
×
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
×
23
Cooling system concerns-runs cold
×
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
×
×
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
×
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
×
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
×
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
×
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
×
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
×
×
×
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
×
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
×
×
×
×
×
×
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
×
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
×
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: Applicable
—: Not applicable

Troubleshooting item

Control system (PCM input signal)

A/F sensor

BARO sensor (built-intoPCM)

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
Blown fuses
2
Check engine light illuminates
×
×
×
×
×
×
×
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
×
×
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
×
×
×
×
×
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
×
×
×
×
×
×
×
×
×
×
×
×
×
18
Knocking/pinging-acceleration/cruise
×
×
×
×
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
×
×
×
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
×
×
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
×
×
×
18
Knocking/pinging-acceleration/cruise
×
×
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
×
×
×
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
×
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
×
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
×
×
×
23
Cooling system concerns-runs cold
×
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
×
×
×
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
×
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
×
×
10
Hard to start/long crank/erratic start/erratic crank
×
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
×
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
×
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
×
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
×
×
29
A/C is always on or A/C compressor runs continuously
×
i-stop related troubleshooting item

×: 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

High compression pressure

No compression in specific cylinder

No compression in all cylinders

1
Blown fuses
2
Check engine light illuminates
×
×
×
×
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
×
×
×
×
11
Engine stalls-after start/at idle
×
×
×
×
12
Cranks normally but will not start
×
×
×
×
×
13
Engine runs rough/rolling idle
×
×
×
×
14
Fast idle/runs on
15
Low idle/stalls during deceleration
×
×
×
×
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
×
×
×
×
17
Lack/loss of power-acceleration/cruise
×
×
×
×
18
Knocking/pinging-acceleration/cruise
×
×
×
×
19
Poor fuel economy
×
×
×
×
20
Emission compliance
×
×
×
×
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
×
×
×
27
Vibration concerns (engine)
×
×
×
×
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
×
×
×
×
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
×
×
×
11
Engine stalls-after start/at idle
×
×
×
12
Cranks normally but will not start
×
×
×
13
Engine runs rough/rolling idle
×
×
×
14
Fast idle/runs on
×
15
Low idle/stalls during deceleration
×
×
×
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
×
×
×
17
Lack/loss of power-acceleration/cruise
×
×
×
18
Knocking/pinging-acceleration/cruise
×
×
×
19
Poor fuel economy
×
×
×
20
Emission compliance
×
×
×
21
High oil consumption/leakage
×
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
×
×
27
Vibration concerns (engine)
×
×
×
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
×
×
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
×
×
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
×
×
×
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
18
Knocking/pinging-acceleration/cruise
×
×
19
Poor fuel economy
×
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
×
×
×
×
23
Cooling system concerns-runs cold
×
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
×
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
×
×
×
×
×
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
×
×
×
×
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: Applicable
—: Not applicable

Troubleshooting item

Emission system

ATX

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
Blown fuses
2
Check engine light illuminates
×
×
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
×
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
×
×
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
×
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
×
17
Lack/loss of power-acceleration/cruise
×
×
×
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
×
×
×
×
20
Emission compliance
×
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
×
×
×
×
28
A/C does not work sufficiently
×
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: 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
Blown fuses
2
Check engine light illuminates
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
×
×
×
×
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
×
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
×
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
×
17
Lack/loss of power-acceleration/cruise
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
×
×
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: Applicable
—: Not applicable

Troubleshooting item

i-stop

i-stop OFF signal 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

Cabin temperature sensor

Stuck open

Stuck close

Stuck open

Stuck close

Stuck off

Stuck on

Erratic signal input

Erratic signal input

1
Blown fuses
2
Check engine light illuminates
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
×
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: Applicable
—: Not applicable

Troubleshooting item

i-stop

Solar radiation sensor

Driver-side air mix actuator malfunction

Driver-side air mix actuator position sensor

Steering angle sensor

Defroster switch malfunction

Low power brake unit load

Power brake unit vacuum sensor

Battery management system malfunction

Erratic signal input

Erratic signal input

Erratic signal input

Erratic signal input

1
Blown fuses
2
Check engine light illuminates
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
×
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item

×: Applicable
—: Not applicable

Troubleshooting item

i-stop

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)

Erratic signal input

Erratic signal input

Erratic signal input

Stuck on

1
Blown fuses
2
Check engine light illuminates
3
Diesel particulate filter indicator light illuminated frequently/message related to accumulation condition in diesel particulate filter indicated in display
4
Diesel particulate filter indicator light flashes/message related diesel particulate filter malfunction indicated in display
5
Wrench warning indicator light illuminated or flashes
6
Master warning light illuminated/message related to vehicle system malfunction indicated in display
7
Charging system warning light illuminated/message related to charging system malfunction indicated in display
8
Engine oil warning light illuminated/message related to engine hydraulic pressure indicated in display
9
Will not crank
10
Hard to start/long crank/erratic start/erratic crank
11
Engine stalls-after start/at idle
12
Cranks normally but will not start
13
Engine runs rough/rolling idle
14
Fast idle/runs on
15
Low idle/stalls during deceleration
16
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
17
Lack/loss of power-acceleration/cruise
18
Knocking/pinging-acceleration/cruise
19
Poor fuel economy
20
Emission compliance
21
High oil consumption/leakage
22
Cooling system concerns-overheating
23
Cooling system concerns-runs cold
24
Excessive black smoke
25
Fuel odor (in engine compartment)
26
Engine noise
27
Vibration concerns (engine)
28
A/C does not work sufficiently
29
A/C is always on or A/C compressor runs continuously
i-stop related troubleshooting item