On-Vehicle Inspection

REMOVE NO.2 CYLINDER HEAD COVER
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE RESISTANCE
1. Disconnect the oil control valve connector.
2. Using an ohmmeter, measure the resistance between the terminals.
  
  Fig 1: Inspecting Camshaft Timing Oil Control Valve Resistance
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Resistance: 5.5 to 12 Ω at 20 °C (68 °F)
  
  If the resistance is not as specified, replace the valve.
3. Reconnect the oil control valve connector.
INSPECT VVT-i OPERATION
1. Allow the engine to warm up to normal operating temperature.
2. Check that the engine stalls or idles roughly when battery positive voltage is applied to the oil control valve with the engine idling.
3. If operation is not as specified, check the oil control valve (see INSPECTION ), VVT-i pulley, intake camshaft, wiring and engine ECU.
INSTALL NO.2 CYLINDER HEAD COVER