distributor.
Short check connector
terminal F/P to body
GND using a jumper
wiring.
Turn the ignition switch
to the ON position
(Engine off).
Is the fuel line pressure
correct with the ignition
switch at ON?
(See
FUEL LINE
PRESSURE
INSPECTION [LF]
.)
Open or short circuit in
injector
Leakage
Injection volume
No
Zero or low:
Inspect the fuel pump relay and
fuel pump circuit.
Inspect the fuel line for
clogging.
If there is no malfunction,
replace the fuel pump unit.
(See
FUEL PUMP UNIT
REMOVAL/INSTALLATION
[LF]
.)
High:
Replace the fuel pump unit.
(See
FUEL PUMP UNIT
REMOVAL/INSTALLATION
[LF]
.)
7
Inspect the spark plug
for the following.
Heat range
Air gap
Is the spark plug
normal?
Yes
Go to the next step.
No
Replace the spark plug.
(See
SPARK PLUG
REMOVAL/INSTALLATION
[LF]
.)
8
Remove the suspected
fuel injector.
Inspect the following:
Resistance
(See
FUEL
INJECTOR
INSPECTION
[LF]
.)
Fuel injection
volume
(See
FUEL
INJECTOR
INSPECTION
[LF]
.)
Yes
Inspect for open circuit in
wiring harness between fuel
injector connector terminal B
and PCM at the following
terminals:
For No.1 cylinder: 2BB
For No.2 cylinder: 2BC
For No.3 cylinder: 2BD
For No.4 cylinder: 2AZ
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:42:11 PM
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