Toyota Corolla (E120): Actuator magnetic clutch circuit

Dtc 12 actuator magnetic clutch circuit

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Inspection
1. Cooling fan relay Inspect the cooling fan relay continuity.  Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay.  Check that there is no continuity between terminals 3 and 5. If there is conti ...

Inspection procedure
Hint: read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the ...

Circuit description
The variable valve timing (vvt) system includes the ecm, the oil control valve (ocv) and the vvt controller. The ecm sends a target ”duty–cycle” control signal to the ocv. This control signal, applied to the ocv, regulates the oil pressure supplied to the vvt controller. Camshaft timin ...