z
Is any related Service Bulletins
available?
No
Go to the next step.
3
INSPECT FUEL INJECTOR NO.4
CONNECTOR FOR POOR
CONNECTION
z
Turn the ignition switch off.
z
Disconnect the fuel injector No.4
connector.
z
Inspect for poor connection (such as
damaged/pulled-out pins,
corrosion).
z
Are there malfunction?
Yes
Repair or replace suspected part, then go
to Step 8.
No
Go to the next step.
4
INSPECT PCM CONNECTOR FOR
POOR CONNECTION
z
Turn the ignition switch off.
z
Disconnect the PCM connector.
z
Inspect for poor connection (such as
damaged/pulled-out pins,
corrosion).
z
Is there malfunction?
Yes
Repair or replace suspected part, then go
to Step 8.
No
Go to the next step.
5
INSPECT FUEL INJECTOR NO.4
POWER SUPPLY CIRCUIT FOR
OPEN CIRCUIT
z
Turn the ignition switch to the ON
position (Engine off).
z
Measure the voltage between fuel
injector No.4 connector terminal B
and body ground.
z
Is the voltage
B+
?
Yes
Go to the next step.
No
Repair or replace suspected part, then go
to Step 8.
6
INSPECT FUEL INJECTOR NO.4
SIGNAL CIRCUIT FOR OPEN
CIRCUIT
z
Inspect continuity between fuel
injector No.4 terminal A (wiring
harness-side) and PCM terminal
2BH (wiring harness-side).
z
Is there continuity?
Yes
Go to the next step.
No
Repair or replace suspected part, then go
to Step 8.
7
INSPECT FUEL INJECTOR NO.4
Yes
Replace the fuel injector No.4, then go
to the next step.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:31 AM
Page 132
© 2005 Mitchell Repair Information Company, LLC.
