EVAP System Malfunction Judgment: Notes

M-MDS detect the small/large leak or blockage based on fuel tank pressure at the end of EVAP Test.

Fig 1: EVAP System Malfunction Judgment Chart
Courtesy of MAZDA MOTORS CORP.

A small leak in the purge solenoid valve is suspect.
This judgment means tank pressure goes to minus side at stage 2 test.
- Check the purge solenoid valve. Refer to the workshop manual.
Evaporative system test procedure
Verify that all PIDs within the following specifications.

Fig 2: PIDs Specifications Chart
Courtesy of MAZDA MOTORS CORP.
NOTE:
- To successfully perform this procedure, all PIDs must be within the specifications before proceeding to the next step.
Select the following items from the initialization screen of the M-MDS.
- Select the "Powertrain".
- Select the "Fuel".
- Select the "EVAP Test".
  - Verify that ECT and IAT are within the specifications at the confirmation screen. To successfully perform this procedure, ECT and IAT must be within the spec before proceeding to the next step.
  - Fuel Level must be maintained within 15 %-85 % . PCM will cancel the EVAP Test If the Fuel Level is lower than 15 % or higher than 85 % .
Verify the test results described on the M-MDS and follow the instructions.