Mazda CX-9 Grand Touring 2009 Manual page 1435

2. Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [MZI-3.7].)
3. Disconnect the OCV connector.
4. Measure the coil resistance between terminals A and B using a tester.
If it is not within the specification, replace the OCV.
Oil control valve resistance 5-14 ohms
5. Install in the reverse order of removal.
Fig. 33: Locating OCV Connector
Courtesy of MAZDA MOTORS CORP.
SPOOL VALVE OPERATION INSPECTION
1. Disconnect the negative battery cable.
2. Remove the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [MZI-3.7].)
3. Verify that the spool valve in the OCV is in the maximum valve timing retard position as indicated in the
figure.
If not as specified, replace the OCV.
4. Verify that the battery is fully charged.
If not as specified, recharge the battery.
Fig. 34: Identifying Maximum Valve Timing Retard Position (Spool Valve)
Courtesy of MAZDA MOTORS CORP.
2008 Mazda CX-9 Grand Touring
2008 ENGINE Mechanical (MZI-3.7) - Mazda CX-9