Mazda MX-5 Miata Sport 2007 Manual page 1999

2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
correct with ignition
switch to ON position?
(See FUEL LINE
PRESSURE
INSPECTION [LF] .)
11 Visually inspect for fuel
leakage at fuel injector
O-ring and fuel line.
Service if necessary.
Is fuel line pressure
held after ignition
switch is turned off?
(See FUEL LINE
PRESSURE
INSPECTION [LF] .)
12
NOTE:
The following

test is for
engine stall with
the A/C on. If
other symptom
exists, go to the
next step.
Connect a pressure
gauge to A/C low and
high pressure side
lines.Turn the A/C on
and measure low side
and high side
pressure.Are pressures
within specifications?
(See REFRIGERANT
PRESSURE
CHECK .)
13
NOTE:
The following

test should be
performed for
symptom with
cruise control
ON. If other
symptoms exist,
go to the next
step.
Inspect cruise control
2007 Mazda MX-5 Miata Sport
Yes
No
Yes
No
Yes
No
High:
Replace the fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION
[LF] .)
Go to the next step.
Inspect the fuel injector.
If the fuel injector is normal,
replace the fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION
[LF] .)
Go to the next step.
If the A/C is always on, go to
symptom troubleshooting
"No.24 A/C is always on or A/C
compressor runs continuously".
(See NO.24 A/C IS ALWAYS
ON OR A/C COMPRESSOR
RUNS CONTINUOUSLY
[LF] .)
For other symptoms, inspect the
following:
Refrigerant charging

amount
Condenser fan operation

Go to the next step.
Repair or replace the
malfunctioning part.