Mazda 6. Manual — part 110

VARIABLE VALVE TIMING, OIL CONTROL VALVE (OCV)

B–33

Variable Valve Timing Actuator Removal Note

1. Set a wrench or equivalent tool at the hexagonal part of the camshaft to prevent rotation.
2. Loosen the variable valve timing actuator tightening bolts.

Variable Valve Timing Actuator Installation Note

1. Set a wrench or equivalent tool at the hexagonal part of the camshaft to prevent rotation.
2. Tighten variable valve timing actuator tightening bolts.

Tightening torque

69—75N·m {7.10—7.6 kgf·m, 50.9—55.3 ft·lbf}

End Of Sie

OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION

A6E222614420W01

1. Disconnect the negative battery cable.
2. Remove the plug hole plate.
3. Remove the high-tension lead. (See

G–10–1 HIGH-TENSION LEAD REMOVAL/INSTALLATION

4. Remove the oil control valve (OCV) connector.
5. Remove the ventilation hose.
6. Remove the cylinder head cover. (See

B–17 Cylinder Head Cover Installation Note

7. Remove in the order indicated in the table.
8. Install in the reverse order of removal.

End Of Sie

OIL CONTROL VALVE (OCV) INSPECTION

A6E222614420W02

Coil Resistance Inspection

1. Disconnect the negative battery cable.
2. Disconnect the oil control valve connector.
3. Measure the resistance between terminals A and

B using an ohmmeter.

• If not as specified, replace the oil control

valve.

Specification

6.9—7.9 ohms

4. Connect the oil control valve connector.

OIL CONTROL VALVE (OCV)

Oil control valve (OCV)

AME2226W001

AME2226W002

B–34

OIL CONTROL VALVE (OCV)

Spool Valve Operation Inspection

1. Disconnect the negative battery cable.
2. Remove the oil control valve.
3. Verify that the spool valve in the oil control valve

is in the maximum valve timing retard position as
indicated in the figure.

• If not as specified, replace the oil control

valve.

4. Verify that the battery is fully charged.

• If not as specified, recharge the battery.

5. Apply battery positive voltage between the oil

control valve terminals and verify that the spool
valve operates and moves to the maximum valve
timing advance position.

• If not as specified, replace the oil control

valve.

Note

• When applying battery positive voltage between the oil control valve terminals, the connection can be

either of the following:
— Positive battery cable to terminal A, negative battery cable to terminal B
— Positive battery cable to terminal B, negative battery cable to terminal A

6. Stop applying battery positive voltage and verify

that the spool valve returns to the maximum valve
timing retard position.

• If not as specified, replace the oil control

valve.

End Of Sie

AME2226W003

AME2226W004

D–1

LUBRICATION SYSTEM

LOCATION INDEX . . . . . . . . . . . . .D-2

LOCATION INDEX. . . . . . . . . . . ...D-2

OIL PRESSURE INSPECTION . . . . . . . ..D-3