the spark
plugs do not
have carbon
deposits.
Are the spark plugs
normal?
Repeat Step 1.
2
Inspect the spark
plugs for damage,
wear, carbon
deposits and proper
plug gap.
Are the spark plugs
normal?
Yes
Go to the next step.
No
Replace spark plugs, then
go to Step 1.
3
Reconnect the
spark plugs to the
ignition coil.
Ground the spark
plugs to the engine.
Is a strong blue
spark visible at
each cylinder while
cranking the
engine?
Yes
Ignition system is normal
No
Some cylinders do not
spark:
Go to the next step.
All cylinders do not
spark:
Go to Step 5.
4
Inspect the
following wiring
harnesses for open
or short:
Ignition coil
No.1
terminal C-
PCM
terminal
2BA
Ignition coil
No.2
terminal C-
PCM
terminal
2AW
Ignition coil
No.3
terminal C-
PCM
Yes
Inspect and replace the
ignition coil.
(See
IGNITION COIL
INSPECTION [LF]
.)
No
Repair or replace the
malfunctioning part, then
go to Step 1.
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:42:11 PM
Page 138
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