z
If there is airflow, replace the PCV valve. (See
POSITIVE CRANKCASE VENTILATION
(PCV) VALVE REMOVAL/INSTALLATION [MZI-3.7]
.)
4. Verify that there is airflow when vacuum is applied to the PCV valve.
z
If there is no airflow, replace the PCV valve. (See
POSITIVE CRANKCASE VENTILATION
(PCV) VALVE REMOVAL/INSTALLATION [MZI-3.7]
.)
RESISTANCE INSPECTION
1. Disconnect the negative battery cable. (See
BATTERY REMOVAL/INSTALLATION [MZI-3.7]
.)
2. Remove the engine cover. (See
ENGINE COVER REMOVAL/INSTALLATION [MZI-3.7]
.)
3. Disconnect the PCV valve heater control connector.
4. Measure the resistance between the PCV valve heater control terminals.
z
If within the specification, perform out the "Circuit Open/Short Inspection".
z
If not within the specification, replace the PCV valve. (See
POSITIVE CRANKCASE
VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [MZI-3.7]
.)
PCV valve heater control resistance 10-35 ohm
Fig. 18: Identifying PCV Valve Heater Control Connector Terminals
Courtesy of MAZDA MOTORS CORP.
CIRCUIT OPEN/SHORT INSPECTION
1. Disconnect the PCM connector.
2. Inspect the following wiring harnesses for open or short circuit (continuity check).
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE Emission System (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:04:04 AM
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