Mazda CX-9 Grand Touring 2007 Manual page 585

2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
CONDITION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC P0455 (MZI-3.5) DIAGNOSTIC PROCEDURE
STEP
1 VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
Has FREEZE FRAME DATA
been recorded?
2 VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
Verify related Service Bulletins
and/or on-line repair information
availability.
Is any related Service Bulletins
available?
3 VERIFY RELATED PENDING
CODE OR STORED DTCs
Turn the ignition switch off then to
the ON position (Engine off).
Verify related pending code or
stored DTCs.
Are other DTCs present?
4 VISUALLY INSPECT FOR LARGE
2007 Mazda CX-9 Grand Touring
EVAP system when there is -1.74 kPa (PID FTP_H2O displays "-7.0" or
less vacuum for a 30 seconds evaluation time.
After-market EVAP hardware (such as fuel-filler cap) not conforming to
required specifications.
Disconnected or cracked fuel chopping timer tube, CV solenoid valve outlet
tube or EVAP return tube.
CV solenoid valve stuck closed
Damaged or missing fuel-filler cap.
Insufficient fuel-filler cap installation.
Loose fuel vapor hose/tube connections to EVAP system components.
Blockages or restrictions in fuel vapor hoses/tubes.
Rollover valve blocked or fuel shut-off valve.
CV solenoid valve stuck open.
Mechanically inoperative Fuel tank pressure sensor.
Damaged charcoal canister.
INSPECTION ACTION
Yes Go to the next step.
No Record FREEZE FRAME DATA on the
repair order, then go to the next step.
Yes Perform repair or diagnosis according to
the available Service Bulletins.
If the vehicle is not repaired, go to
the next step.
No Go to the next step.
Yes Go to the appropriate DTC
troubleshooting.
(See DTC TABLE [MZI-3.5].)
No Go to the next step.
Yes Repair or replace the EVAP components if