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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic - Engine Control System (3 Of 5) >> DTC P1450-00; Evaporator System: Abnormal Negative Pressure In Fuel Tank >> Troubleshooting Diagnostic Procedure >> Intention of troubleshooting procedure

Intention of troubleshooting procedure

STEP INSPECTION RESULTS ACTION
1 PURPOSE: DETERMINE INTEGRITY OF FUEL TANK PRESSURE SENSOR Yes Replace the charcoal canister, then go to Step 6.
(See CHARCOAL CANISTER REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
2 PURPOSE: DETERMINE INTEGRITY OF CV SOLENOID VALVE Yes Replace the CV solenoid valve, then go to Step 6.
(See CANISTER VENT (CV) SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
3 PURPOSE: VERIFY IF THERE IS RESTRICTION BETWEEN CHARCOAL CANISTER AND ATMOSPHERE RELEASE PASSAGE
  • Verify the following passage hoses, pipe connection condition, and that there is no restriction.
  • Between charcoal canister and CV solenoid valve
  • Between CV solenoid valve and atmosphere release
  • Is there any poor connection or restriction?
Yes Repair or replace the malfunctioning part according to the inspection results, then go to Step 6.
No Go to the next step.
4 PURPOSE: DETERMINE INTEGRITY OF CHARCOAL CANISTER Yes Replace the charcoal canister, then go to Step 6.
(See CHARCOAL CANISTER REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
5 PURPOSE: DETERMINE INTEGRITY OF PURGE SOLENOID VALVE Yes Replace the purge solenoid valve, then go to the next step.
(See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
6 PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION Yes Repeat the inspection from Step 1 of the troubleshooting diagnostic procedure.
Go to the next step.
No Go to the next step.
7 PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION
  • Is any other DTC or pending code stored?
Yes Go to the applicable DTC inspection.
(See DTC TABLE [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .)
No DTC troubleshooting completed.