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Home >> Mazda >> 2021 >> CX-30 Turbo Premium >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 27 (On-Board Diagnostic - Engine Control System (VIN L & VIN M) (3 Of 4)) >> DTC P144A:00 [Pcm (SKYACTIV-G)] >> Troubleshooting Diagnostic Procedure >> Intention of troubleshooting procedure

Intention of troubleshooting procedure

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TROUBLESHOOTING DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 PURPOSE: INSPECT FUEL TANK PRESSURE SENSOR FOR MALFUNCTION Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification.
(See PRESSURE CONTROL VALVE REMOVAL/INSTALLATION (VIN M) .)
(See PRESSURE CONTROL VALVE REMOVAL/INSTALLATION (VIN 7, L) .)
2 PURPOSE: INSPECT PURGE SOLENOID VALVE FOR MALFUNCTION Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification.
(See PURGE SOLENOID VALVE REMOVAL/INSTALLATION (VIN M) .)
(See PURGE SOLENOID VALVE REMOVAL/INSTALLATION (VIN 7, L) .)
3 PURPOSE: VERIFY IF THERE IS CLOGGING BETWEEN FUEL TANK PRESSURE SENSOR AND FUEL TANK
  • Verify the following passage hoses, pipe connection condition, and that there is no clogging.
    • Between fuel tank pressure sensor and fuel shut-off valve
  • Is there any poor connection or clogging?
Yes Repair or replace the malfunctioning location and perform the repair completion verification.
No Go to the next step.
4 PURPOSE: INSPECT FUEL SHUT-OFF VALVE FOR MALFUNCTION Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification.
(See FUEL TANK REMOVAL/INSTALLATION (VIN M) .)
(See FUEL TANK REMOVAL/INSTALLATION (VIN 7, L) .)
5 PURPOSE: INSPECT ROLLOVER VALVE FOR MALFUNCTION Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification.
(See FUEL TANK REMOVAL/INSTALLATION (VIN M) .)
(See FUEL TANK REMOVAL/INSTALLATION (VIN 7, L) .)
Repair completion verification 1 PURPOSE: VERIFY THAT VEHICLE IS REPAIRED
  • Install/connect the part removed/disconnected during the troubleshooting procedure.
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(US)] .)
If the CAN communication is normal, perform the diagnosis from Step 1.
No Go to the next step.
Repair completion verification 2 PURPOSE: VERIFY IF OTHER DTCs DISPLAYED
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.