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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 P144A-00; Evaporator System: Clogging Between Fuel Tank And Fuel Tank Pressure Sensor >> Function Inspection Using M-MDS

Function Inspection Using M-MDS

STEP INSPECTION RESULTS ACTION
1 PURPOSE: VERIFY RELATED REPAIR INFORMATION AVAILABILITY
  • Verify related Service Bulletins and/or on-line repair information availability.
  • Is any related repair information available?
Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
2 PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION
NOTE:
  • Recording can be facilitated using the screen capture function of the PC.
  • Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (EVAP system related) on the repair order.
- Go to the next step.
3 PURPOSE: VERIFY IF FUEL GAUGE SENDER UNIT HAS MALFUNCTION Yes Perform the DTC troubleshooting for the fuel gauge sender unit first because the fuel gauge sender unit cannot detect the fuel tank level and determines that a malfunction is occurring.
(See DTC P0460:00 [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .)
(See DTC P0461:00 [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .)
(See DTC P0462:00 [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .)
(See DTC P0463:00 [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .)
No Go to the next step.
4 PURPOSE: VERIFY FUEL TANK PRESSURE SENSOR MEASURED CORRECTLY
  • EVAPCP
  • EVAPCV
  • Change to the following conditions using the simulation function.
Yes The fuel tank pressure sensor measures correctly.
  • Go to the next step.
  • EVAPCP: 100 %
  • EVAPCV: On
No The possibility of a fuel tank pressure sensor malfunction is high.
  • Go to the troubleshooting procedure to perform the procedure from Step 1.
5 PURPOSE: VERIFY IF PURGE SOLENOID VALVE IS STUCK OPEN
  • Perform the following procedure to induct barometric pressure to the fuel tank.
  • EVAPCP
  • EVAPCV
  • Change to the following conditions using the simulation function.
  • EVAPCP: 0 %
  • EVAPCV: Off
NOTE:
  • The displayed PID value is as follows:
  • Approx. 2.6 V (barometric pressure)
  • Perform the following procedure to force drive the CV solenoid valve.
  • EVAPCP
  • EVAPCV
  • Change to the following conditions using the simulation function.
  • EVAPCP: 0 %
Yes The possibility of a stuck purge solenoid valve open is high.
  • Go to the troubleshooting procedure to perform the procedure from Step 2.
No The possibility of clogging between fuel tank pressure sensor and fuel tank is high.
  • Go to the troubleshooting procedure to perform the procedure from Step 3.