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Home >> Mazda >> 2004 >> 6 L4-2.3L >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Evaporative Emissions System >> Canister Purge Solenoid >> Testing and Inspection
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Canister Purge Solenoid: Testing and Inspection

PURGE SOLENOID VALVE INSPECTION

Airflow Inspection

NOTE: Perform the following test only when directed.

1. Disconnect the negative battery cable.
2. Remove the purge solenoid valve. (See Purge Solenoid Valve Installation Note.)







3. Inspect airflow between the ports under the following conditions,
- If not as specified, replace the purge solenoid valve.
- If as specified, carry out the "Circuit Open/Short Inspection".

Circuit Open/Short Inspection
1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION.)




2. Inspect the following wiring harnesses for open or short circuit (continuity check).
Open circuit
- If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
- Purge solenoid valve terminal A (harness-side) and PCM terminal 4U
- Purge solenoid valve terminal B (harness-side) and main relay terminal C (harness-side)

Short circuit
- If there is continuity, there is a short circuit. Repair or replace the wiring harness.
- Purge solenoid valve terminal A (harness-side) and body GND
- Purge solenoid valve terminal B (harness-side) and power supply
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