Dtc P0455[L3 With Tc] - Mazda CX-7 2007 Workshop Manual

STEP
5 VERIFY TROUBLESHOOTING OF DTC P0446
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Turn the ignition switch to the ON position
(Engine off).
• Clear the DTC from the PCM memory using
the M-MDS.
• Perform the EVAP system test using the M-
MDS.
(See01-03-78 ENGINE CONTROL SYSTEM
OPERATION INSPECTION[L3 WITH TC].)
• Is the same DTC present?
Note
• If the EVAP system test function is not
available, preform the following
procedure:
— Perform "EVAP System Repair
Verification Drive Mode".
(See01-02-10 OBD-II DRIVE
MODE[L3 WITH TC])
— Is the PENDING CODE for this DTC
present?
6 VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR PROCEDURE".
(See01-02-10 AFTER REPAIR
PROCEDURE[L3 WITH TC].)
• Are any DTCs present?
End Of Sie

DTC P0455[L3 WITH TC]

DTC P0455 Evaporative emission control system leak detected (gross leak)
• PCM measures the pump load current (EVAP line pressure) when a specified period has passed after the
EVAP system is sealed when monitoring conditions are met. If the load does not reach the reference
current value within the specified period, the PCM determines that the EVAP system has a gross leak.
MONITORING CONDITION
— IG switch OFF
— IAT: 5— 35 °C {40— 95 °F}
— Battery voltage: 11— 20 V
— Atmospheric pressure: 72.2 kPa {542 mmHg, 21.3 inHg} or above
— Fuel tank level: 15— 85%
DETECTION
CONDITION Diagnostic support note
• This is an intermittent monitor (Evaporative system monitor).
• MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in
one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction condition during the first drive
cycle.
• FREEZE FRAME DATA is available.
• DTCs are stored in the PCM memory.
• DIAGNOSTIC MONITORING TEST RESULT is available.
• Purge solenoid valve malfunction
• EVAP system leak detection pump malfunction
• Loose, missing or detective fuel filler cap
• Charcoal canister malfunction
POSSIBLE
• Fuel tank malfunction
CAUSE
• Fuel tank misinstallation
• EVAP hose damaged or loose
• Poor connection or damaged vacuum hose
01-02–144
ON-BOARD DIAGNOSTIC [L3 WITH TC]
INSPECTION
Yes Replace the PCM, then go to the next step.
No Go to the next step.
Yes Go to the applicable DTC inspection.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No Troubleshooting completed.
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