z
Access the PCM and monitor the
SHRTFT1 and SHRTFT2 PIDs.
z
Allow the engine to stabilize at the
temperature necessary to recreate
the concern.
z
Record the SHRTFT1 and
SHRTFT2 PID values.
z
Turn the ignition switch off.
z
Repair the vacuum leak.
z
Turn the ignition switch to the ON
position (Engine running).
z
Allow the engine to stabilize at the
temperature necessary to recreate
the concern.
z
Access the PCM and monitor the
SHRTFT1 and SHRTFT2 PIDs.
z
Compare the recorded SHRTFT
PID values, prior to the no vacuum
leak repair, to the current SHRTFT
PID values.
z
Is the decrease in the SHRTFT
PIDs more than 15%?
101 °C {180-215 °F} and the
intake air temperature less than
46 °C {115 °F}.
No
A vacuum leak is still present. Go to Step
6.
8
INSPECT FUEL PRESSURE
z
Remove the jumper wire(s).
WARNING:
z
Fuel line spills and leakage are
dangerous. Fuel can ignite and
cause serious injuries or death.
Fuel can also irritate skin and
eyes. To prevent this, always
complete the "BEFORE REPAIR
PROCEDURE".
NOTE:
z
For vehicle specific fuel
pressure ranges, refer to the
"FUEL LINE PRESSURE
INSPECTION ".
Yes
Go to Step 10.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:30 AM
Page 114
© 2005 Mitchell Repair Information Company, LLC.