Variable Valve Timing Solenoid Component Description and Operation
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Variable Valve Timing Solenoid: Testing and Inspection
COMPONENT INSPECTION
Swirl Control Valve
Supply vacuum to actuator and check swirl control valve operation.
Condition / Swirl control valve
Supply vacuum to actuator / Close
No supply / Open
Swirl Control Valve Control Solenoid Valve
Check solenoid valve air passage continuity.
Condition / Air passage continuity between (A) and (B) / Air passage continuity between (A) and (C)
12V direct current supply between terminals (1) and (2)
No supply / No / Yes
If NG, replace solenoid valve.
One-way Valve
Check one-way valve air passage continuity.
Condition / Air passage continuity
Blow air from side B to A / Yes
Blow air from side A to B / No
If NG, replace one-way valve.
Vacuum Tank
