Vapor test

WARNING: This page is about a different variant/trim than selected.

Move the vehicle to a location where safety can be assured.
Ignition switched ON (engine off).
Access the following PIDs using the M-MDS. (See PCM INSPECTION (VIN 7, L) .) (See PCM INSPECTION (VIN M) .)
- EVAPCP
- EVAPCV
Press the [VAPOR TEST] button in the center of the tester and verify that the red lamp turns on.

Courtesy of MAZDA MOTORS CORP.
Turn the EVAP/low pressure flow control valve for the EVAP/low pressure testing (right side of tester) to ON.

Courtesy of MAZDA MOTORS CORP.
NOTE:
- The vapor flow can be adjusted between the minimum and maximum levels.
- The value indicated by the flow meter indicates the flow rate of the vapor supplied to the EVAP system.
- The value indicated by the system pressure gauge indicates the internal pressure of the EVAP system.
Set the value for simulation item EVACP to 50% duty cycle.
Remove the evaporative hose inside the engine compartment. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION (VIN 7, L) .) (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION (VIN M) .)
Verify that vapor comes out from the evaporative hose.
Set the CV solenoid valve (simulation item: EVAPCV) to ON using the M-MDS.
Set the value for simulation item EVACP to 0% duty cycle.
Leave for 2 min with the EVAP/low pressure flow control valve ON.
Monitor the indication of the flow meter for the EVAP/low pressure testing (right side of tester).
Flow meter value decreases to the minimum flow rate
- The EVAP system is normal in the passage between the fuel-filler cap installation surface and the purge solenoid valve, or between the charcoal canister and the CV solenoid valve.
  - Perform inspections of the following part because malfunctions can be considered with them.
- Fuel-filler cap (See FUEL-FILLER CAP INSPECTION (VIN 7, L) .) (See FUEL-FILLER CAP INSPECTION (VIN M) .)
Flow meter value does not decrease to the minimum flow rate
- The EVAP system has a malfunction between the fuel-filler cap and the purge solenoid valve, or between the charcoal canister and the CV solenoid valve.
  - Proceed to the next step.
Verify that vapor is leaking from the evaporative hose.
Vapor is leaking
- A malfunction can be considered with the purge solenoid valve. Perform the purge solenoid valve inspection. (See PURGE SOLENOID VALVE INSPECTION (VIN 7, L) .) (See PURGE SOLENOID VALVE INSPECTION (VIN M) .)
Vapor is not leaking
- Verify if vapor is leaking from between the fuel-filler cap and the purge solenoid valve using the halogen inspection light.
  - If vapor is leaking, replace the malfunctioning part, and perform the Air only test again. (See AIR ONLY TEST .)