Connect pressure gauge
to A/C low and high
pressure side lines.Start
engine and idle it.Turn
the A/C switch
on.Measure low side
and high side
pressures.Are pressures
within specifications?
(See
REFRIGERANT
PRESSURE
CHECK
.)
other symptoms
exist, go to the
next step.
RUNS CONTINUOUSLY
[LF]
.
For other symptoms, inspect the
following:
Refrigerant charging
amount
Condenser fan operation
7
Connect the M-MDS or
equivalent to the DLC-
2.Start the engine and
idle it.Retrieve any
DTCs for EPS.Is there
any EPS DTC
displayed?
NOTE:
The following
test is for
engine running
rough with P/S
on. If other
symptoms exist,
go to the next
step.
Yes
Go to appropriate the DTC
inspection.
(See
DTC TABLE [LF]
.)
No
Go to the next step.
8
Visually inspect the
CKP sensor and teeth of
crankshaft pulley.
Are the CKP sensor and
teeth of crankshaft
pulley normal?
Yes
Go to the next step.
No
Replace the malfunctioning part.
9
Inspect the ignition coil
related wiring harness
condition (intermittent
open or short circuit)
for all cylinders. Are
wiring harness
conditions normal?
Yes
Go to the next step.
No
Repair the wiring harnesses.
10
Inspect the spark plug
Yes
Spark plug is wet or covered
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:42:09 PM
Page 51
© 2005 Mitchell Repair Information Company, LLC.
