Airflow Inspection

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Perform the following test only when directed.

Disconnect the negative battery cable.
Remove the EVAP system leak detection pump. (See EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM COMPONENT REMOVAL/INSTALLATION .)
Blow air into port A and verify that there is airflow from port B.
- If not as specified, replace the EVAP system leak detection pump.
Blow air into port B and verify that there is airflow from port A.
- If not as specified, replace the EVAP system leak detection pump.
- If as specified, perform the following "Resistance Inspection".
  
  Fig 1: Identifying Evaporative Emission (EVAP) System Leak Detection Pump Airflow Ports
  Courtesy of MAZDA MOTORS CORP.