Ignition Coil; Pickup Coils - Toyota 22R-E Service Manual

IG–14
The ECM monitors the engine condition by signals from each sensor, calculates the ignition
timing and sends an ignition signal to the igniter. High voltage from the ignition is distributed to
each spark plug in the appropriate order to generate a spark between the electrodes, which
ignites the air–fuel mixture.
IGNITER
The igniter temporarily interrupts the primary current with the ignition signal (lGT signal) from the
ECM and generates sparks at the spark plug. Also, as a fail–safe measure, when ignition occurs
an ignition confirmation signal (lGF signal) is sent to the ECM.

IGNITION COIL

The ignition coil uses a closed core coil with the primary coil wrapped around the core and the
secondary coil wrapped around the primary coil. This allows the generation of a high voltage
sufficient to cause a spark to jump across the spark plug gap.
DISTRIBUTOR
This correctly distributes high voltage to the spark plug of each cylinder in the specified ignition
order.

PICKUP COILS

The NE coil detects the crankshaft position, and the G 1 and G2 coils detect the camshaft
position.
IGNITION SYSTEM – (3VZ– E)