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:

    If the shift lever cannot be shifted from P (except vehicles with a manual transmission)
    If the shift lever cannot be shifted with your foot on the brake pedal, there may be a problem with the shift lock system (a system to prevent accidental operation of the shift lever). Have the vehicle inspected by your Toyota dealer immediately. The following steps may be used as an emergency ...

    Editing the contact data
    For PBAP compatible Bluetooth® phones, this function is available when “Automatic Contact/History Transfer” is set to off. 1 Select “Edit Contact”. 2 Select the desired contact. 3 Select corresponding to the desired name or number. ► For editing the name Follow the steps in “R ...

    Overhaul
    1. Remove repair service starter kit Remove the nut, then disconnect the lead wire from terminal c. Remove the 2 screws which are used to secure the repair service starter kit to the starter drive housing.  remove the repair service starter kit.  remove the return ...