Operation CHARM: Car repair manuals for everyone.
Home >> Mazda >> 1995 >> B3000 2WD V6-3.0L OHV >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Evaporative Emissions System >> Purge Flow Sensor >> Testing and Inspection
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Purge Flow Sensor: Testing and Inspection

Purge Flow Sensor Pinout:




PURGE FLOW SENSOR (PFS) INSPECTION
1. Disconnect the vacuum hoses from the PFS.
2. Plug the port leading to the evaporative emission canister purge solenoid valve.
3. Apply 13.6 kPa (4.1 in. Hg) to the PFS.
4. Verify that vacuum holds.
5. Measure the resistance between PFS SIG (Pin 2) and PWR GND (Pin 3) on the PFS.
Resistance: 15 ohms


6. Measure the resistance between PFS SIG (Pin 2) and VPWR (Pin 1) on the PFS.
Resistance: 25.65 - 28.35 ohms

7. If vacuum and/or resistance are not as specified, replace the PFS.
pro multis · About Operation CHARM