Coil Resistance Inspection

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
Disconnect the OCV connector.
Measure the resistance between terminals A and B using an ohmmeter.

Fig 1: Oil Control Valve Connector Terminal A And B
Courtesy of MAZDA MOTORS CORP.

OCV coil resistance

6.9-7.5 ohms [20°C {68°F}]
- If not as specified, replace the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION .)
Install in the reverse order of removal.