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SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G (E)]

SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G (E)]


 id0103s48005s7


Diagnostic Index

•  Verify malfunction symptoms using the following diagnostic index, then go to the appropriate troubleshooting chart.

TROUBLESHOOTING ITEM

DESCRIPTION

Blown fuses
•  Fuse is damaged.
Check engine light illuminates
•  Check engine light illuminates incorrectly.
Will not crank
•  Starter does not work.
Hard to start/long crank/erratic start/erratic crank
•  Starter cranks engine at normal speed but engine requires excessive cranking time before starting.
•  Battery is operating normally.
Engine stalls-after start/at idle
•  Stalling occurs if vehicle is left idling under no load.
•  Stalling occurs when load (electric, A/C) is applied during idling.
•  Stalling occurs if the accelerator pedal is depressed from an idling condition when accelerating from a stop.
Cranks normally but will not start
•  Cranking occurs but no ignition.
Engine oil warning light illuminated/message related to engine hydraulic pressure malfunction indicated in display
•  Engine oil warning light illuminated.
•  Message related to engine hydraulic pressure malfunction indicated in display.
Low fuel warning light flashes/message related to low fuel level indicated in display
•  The low fuel warning light flashes.
•  A message related to a low fuel level is indicated in the display.
Engine runs rough/rolling idle
•  Idle speed lower than the specification.
•  Idling speed unstable, increases/decreases.
Fast idle/runs on
•  Engine speed continues at fast idle after warm-up.
•  Engine runs after ignition is switched off.
Low idle/stalls during deceleration
•  Engine speed decreases when the accelerator pedal is released.
•  Stalls during deceleration with the accelerator pedal fully released.
•  When the accelerator pedal is fully released, vehicle stalls directly after vehicle stops.
Engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges
•  Stalling occurs while driving with the throttle open.
Lack/loss of power-acceleration/cruise
•  Engine speed increase delays when the accelerator pedal is fully depressed.
Knocking/pinging-acceleration/cruise
•  Abnormal combustion occurs under the condition such as the temperature in the combustion chamber is too high resulting in abnormal noise.
•  Knocking sound occurs from the engine compartment during acceleration.
Poor fuel economy
•  The fuel consumption is high compared to the customer’s expectations or the previous fuel consumption.
Emission compliance
•  Fails emissions test.
High oil consumption/leakage
•  Oil consumption is excessive.
Cooling system concerns-overheating
•  The engine coolant temperature is abnormally high.
Cooling system concerns-runs cold
•  Engine does not reach normal operating temperature.
Exhaust smoke
•  Blue, black, or white smoke from exhaust system.
Fuel odor (in engine compartment)
•  Gasoline fuel smell or visible leakage.
Engine noise
•  Engine noise from under hood.
Vibration concerns (engine)
•  Vibration from under hood or driveline.
A/C does not work sufficiently
•  A/C compressor magnetic clutch does not engage when A/C switch is turned on.
•  Compressor valve inoperative
A/C is always on or A/C compressor runs continuously
•  A/C compressor magnetic clutch does not disengage.
Sulfuric smell occurs
•  Rotten egg smell (sulphur) from exhaust.
Spark plug condition
•  Incorrect spark plug condition.
No cylinder deactivation
•  Cylinder deactivation control does not operate.
ATX related troubleshooting item
i-stop related troubleshooting item