Toyota Corolla (E120): Circuit description

Hint

:

  • these dtcs indicate a malfunction related to the primary circuit.
  • If dtc p0351 is displayed, check the no.1 Ignition coil with igniter circuit.
  • If dtc p0352 is displayed, check the no.2 Ignition coil with igniter circuit.
  • If dtc p0353 is displayed, check the no.3 Ignition coil with igniter circuit.
  • If dtc p0354 is displayed, check the no.4 Ignition coil with igniter circuit.

A direct ignition system (dis) is used on this vehicle. The dis improves the ignition timing accuracy, reduces high–voltage loss, and enhances the overall reliability of the ignition system by eliminating the distributor.

The dis is a 1–cylinder ignition system which ignites one cylinder with one ignition coil. In the 1–cylinder ignition system, the one spark plug is connected to the end of the secondary winding. High voltage generated in the secondary winding is applied directly to the spark plug. The spark of the spark plug passes from the center electrode to the ground electrode.

The ecm determines the ignition timing and outputs the ignition signals (igt) for each cylinder. Using the ignition (igt) signal, the ecm turns on and off the power transistor inside the igniter and this switches on and off the current to the primary coil. When the current flow to the primary coil is cut off, high–voltage is generated in the secondary coil and this voltage is applied to the spark plugs to spark inside the cylinders.

As the ecm cuts the current to the primary coil, the igniter sends back the ignition confirmation (igf) signal for each cylinder ignition to the ecm.

Monitor description

Monitor description

If the ecm does not receive the ignition confirmation signal (igf) after

If the ecm does not receive the ignition confirmation signal (igf) after sending the ignition signal (igt), it interprets this as a fault in the igniter and sets a dtc.

Monitor strategy

Typical enabling conditions

Typical enabling conditions

Typical malfunction thresholds

Typical malfunction thresholds

Component operating range

Component operating range

Wiring diagram

Wiring diagram

Inspection procedure

    Share this page:

    Other materials:

    Setting the tire pressure (vehicles with a tire pressure warning system)
    In the following situations, it will be necessary to perform the tire inflation pressure setting procedure of the tire pressure warning system. When the specified tire inflation pressure has changed, such as due to carried load, etc. When the tire inflation pressure is changed such as when t ...

    Battery
    Check the battery as follows. ■ Battery exterior Make sure that the battery terminals are not corroded and that there are no loose connections, cracks, or loose clamps. 1 Terminals 2 Hold-down clamp ■Before recharging When recharging, the battery produces hydrogen gas which is ...

    Steering column
    Service data Torque specification Power steering Service data Torque specification : For use without sst ...