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SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0]

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2016 – MX-5 – Engine

SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0]

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

Diagnostic Index—: Not applicable

No.

TROUBLESHOOTING ITEM

DESCRIPTION

1

Blown fuses

2

Check engine light illuminates

  • Check engine light illuminates incorrectly.

3

Will not crank

  • Starter does not work.

4

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.

5

Engine stalls

After start/at idle

  • Engine stops unexpectedly at idle, after start, or both.

6

Cranks normally but will not start

  • Starter cranks engine at normal speed but engine will not run.

  • Refer to symptom troubleshooting “NO.5 ENGINE STALLS-AFTER START/AT IDLE” if this symptom appears after engine stalls.

  • Fuel is in tank.

  • Battery is in normal condition.

7

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. (With center display)

8

Engine runs rough/rolling idle

  • Engine speed fluctuates between specified idle speed and lower speed and, engine shakes excessively.

  • Idle speed is too slow and engine shakes excessively.

9

Fast idle/runs on

  • Engine speed continues at fast idle after warm-up.

  • Engine runs after ignition is switched off.

10

Low idle/stalls during deceleration

  • Engine stops unexpectedly at beginning of deceleration or recovery from deceleration.

11

Engine stalls/quits

Acceleration/cruise

  • Engine stops unexpectedly at beginning of acceleration or during acceleration.

  • Engine stops unexpectedly while cruising.

Engine runs rough

Acceleration/cruise

  • Engine speed fluctuates during acceleration or cruising.

Misses

Acceleration/cruise

  • Engine misses during acceleration or cruising.

Buck/jerk

Acceleration/cruise/deceleration

  • Vehicle bucks/jerks during acceleration, cruising, or deceleration.

Hesitation/stumble

Acceleration

  • Momentary pause at beginning of acceleration or during acceleration.

Surges

Acceleration/cruise

  • Momentary minor irregularity in engine output.

12

Lack/loss of power

Acceleration/cruise

  • Performance is poor under load. (e.g., power down when climbing hills)

13

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.

14

Poor fuel economy

  • The fuel consumption is high compared to the customer’s expectations or the previous fuel consumption.

15

Emission compliance

  • Fails emissions test.

16

High oil consumption/leakage

  • Oil consumption is excessive.

17

Cooling system concerns

Overheating

  • Engine runs at higher than normal temperature/overheats.

18

Cooling system concerns

Runs cold

  • Engine does not reach normal operating temperature.

19

Exhaust smoke

  • Blue, black, or white smoke from exhaust system.

20

Fuel odor (in engine compartment)

  • Gasoline fuel smell or visible leakage.

21

Engine noise

  • Engine noise from under hood.

22

Vibration concerns (engine)

  • Vibration from under hood or driveline.

23

A/C does not work sufficiently

  • A/C compressor magnetic clutch does not engage when A/C switch is turned on.

24

A/C is always on or A/C compressor runs continuously

  • A/C compressor magnetic clutch does not disengage.

25

Exhaust sulphur smell

  • Rotten egg smell (sulphur) from exhaust.

26

Fuel refill concerns

  • Fuel tank does not fill smoothly.

27

Fuel filling shut off concerns

  • Fuel does not shut off properly.

28

Spark plug condition

  • Incorrect spark plug condition.

29

AT concerns

Upshift/downshift/engagement

  • AT concerns not related to engine performance.

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