OIL CONTROL VALVE (OCV) INSPECTION [ZY, Z6]

id0110b0801400

Coil resistance inspection

1.  Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [ZY, Z6].)

2.  Disconnect the negative battery cable.

3.  Disconnect the OCV connector.

4.  Measure the coil resistance between terminals A and B using a tester.

am3zzw00006275

•  If not within the specification, replace the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [ZY, Z6].)

5.  Install in the reverse order of removal.

Spool Valve Operation Inspection

1.  Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [ZY, Z6].)

2.  Disconnect the negative battery cable.

3.  Remove the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [ZY, Z6].)

4.  Verify that the spool valve inside the OCV is at the minimum valve timing retard position as shown in the figure.

am3zzw00006276

•  If it cannot be verified, replace the OCV.

5.  Verify that the battery is fully charged. (See BATTERY INSPECTION [ZY, Z6].)

Note

•  When applying battery positive voltage between the oil control valve terminals, the connection of the negative and positive cable can be either the A or B terminal.

6.  Apply battery positive voltage between oil control valve terminals A and B, and verify that the spool valve operates and moves to the maximum valve timing advance position.

am3zzw00006275

am3zzw00006277

•  If there is any malfunction, replace the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [ZY, Z6].)

7.  Stop applying battery positive voltage and verify that the spool valve returns to the minimum valve timing retard position.

•  If it cannot be verified, replace the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [ZY, Z6])

8.  Install in the reverse order of removal.