No.27 Fuel Refill Concerns - Mazda CX-7 2007 Workshop Manual

SYMPTOM TROUBLESHOOTING [L3 WITH TC]
STEP INSPECTION
3 Connect the M-MDS to the DLC-2.
Turn the ignition switch to the ON position
(Engine off).
Retrieve any DTCs.
Are there any DTCs displayed?
4 Access and monitor FUEL_PRES PID.
Is the FUEL_PRES PID value within the
specified?
(See 01-40-6 PCM INSPECTION[L3 WITH TC].)
5 Is vehicle accelerate performance normally?
6 Inspect the fuel pressure sensor.
(See 01-40-35 FUEL PRESSURE SENSOR
INSPECTION[L3 WITH TC].)
Is the fuel pressure sensor normal?
7 Replace the high pressure fuel pump.
Monitor FUEL_PRES PID.
Is the FUEL_PRES PID value within the
specified?
(See 01-40-6 PCM INSPECTION[L3 WITH TC].)
8 Inspect the charcoal canister for fuel saturation.
Is excess amount of liquid fuel present in
canister?
9 Verify test results.
• If normal, return to the diagnostic index to service any additional symptoms.
• If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the
repair or diagnosis.
— If the vehicle is repaired, troubleshooting is completed.
— If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later
calibration is available. Retest.le. Retest.
End Of Sie
NO.27 FUEL REFILL CONCERNS[L3 WITH TC]
27 Fuel refill concerns
• Fuel tank does not fill smoothly.
DESCRIPTION
• Clogged EVAP pipes
• Nonreturn valve malfunction
• Improper use of fuel nozzle
• Inadequate fuel filling speed
Warning
• The following troubleshooting flow chart contains the fuel system diagnosis and repair
procedures. Read the following warnings before servicing the fuel system:
— Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always
— Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or
POSSIBLE
CAUSE
Caution
• Disconnecting/connecting the quick release connector without cleaning it may possibly
cause damage to the fuel pipe and quick release connector. Always clean the quick release
connector joint area before disconnecting/connecting, and make sure that it is free of foreign
material.
keep sparks and flames away from fuel.
death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete
"BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this
manual.
(See01-14-4 BEFORE REPAIR PROCEDURE[L3 WITH TC].)
(See01-14-4 AFTER REPAIR PROCEDURE[L3 WITH TC].)
RESULTS
Yes DTC is displayed:
Go to the appropriate DTC test.
No No DTC is displayed:
Go to the next step.
Yes Go to Step 8.
No Go to the next step.
Yes Go to the next step.
No Go to Step 7.
Yes Go to Step 8.
No Go to the next step.
Yes Troubleshooting is completed.
Go to Step 9.
No Go to the next step.
Yes Replace the charcoal canister.
No Inspect the fuel tank vent system.
If fuel tank vent system is normal, suggest trying a
different brand since sulfur content can vary in different
fuels.
If fuel tank vent system is not normal, repair or replace
the malfunctioning parts.
ACTION
id010339803300
01-03–71
01-03