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Toyota Corolla Repair Manual: 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 airfuel ratio was lean or rich, etc. At the time of the malfunction.

1 Perform simulation test

  1. Clear the dtc
  2.  shuffle arrangement of the ignition coil and igniters.

    Notice

    : do not shuffle the connectors.

  3.  perform the simulation test.

Result:

2 Inspect ecm(igt1, igt2, igt3, igt4 and igf signal)

2 Inspect ecm(igt1, igt2, igt3, igt4 and igf signal)

  1. Inspection using the oscilloscope.
  2.  during cranking or idling, check the waveform between terminals igt1 to igt4 and e1, igf and e1 of the ecm connector.

Standard:

Hint:

Hint

: correct waveform is as shown in the diagram on the left.

3 Check harness and connector(ignition coil assy  ecm)

3 Check harness and connector(ignition coil assy ecm)

  1. Disconnect the i2, i3, i4 or i5 ignition coil and igniter connector.
  2.  disconnect the e3 ecm connector.
  3.  check the resistance between the wire harness side connectors.

Standard (check for open):

Standard (check for open):

Standard (check for open):

Standard (check for short):

Standard (check for short):

Standard (check for short):

Standard (check for short):

  1. Reconnect the ecm connector.
  2.  reconnect the ignition coil and igniter connector

4 Inspect ignition coil assy(power source)

4 Inspect ignition coil assy(power source)

  1. Disconnect the i2, i3, i4 or i5 ignition coil and igniter connector.
  2.  check the resistance between the wire harness side connectors.

Standard (check for open):

  1. Turn the ignition switch on position.
  2. measure the voltage between the terminal of the wire harness side connector and body ground.

Standard:

  1. Reconnect the ignition coil and igniter connector.

5 Check harness and connector(ignition coil assy  ignition switch)

5 Check harness and connector(ignition coil assy ignition switch)

  1. Disconnect the i2, i3, i4 or i5 ignition coil and igniter connector.
  2.  disconnect the i10 ignition switch connector.
  3.  check the resistance between the wire harness side connectors.

Standard (check for open):

Standard (check for short):

Standard (check for short):

  1. Reconnect the ignition coil and igniter connector.
  2.  reconnect the ignition switch connector.

Replace ignition coil assy

Replace ignition coil assy

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 ...

Catalyst system efficiency below threshold
Dtc p0420 catalyst system efficiency below threshold (bank 1) ...

Other materials:

Inspection procedure
1 Check side squib(rh) circuit(airbag sensor assy center front seat airbag assy rh) Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the front seat airbag assy (rh ...

Inspection procedure
1 Check d squib circuit(airbag sensor assy center horn button assy) Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connector between the airbag sensor assy center and the horn button assy.  for the black con ...

Bluetooth Audio (Multimedia system)
Listening to Bluetooth Audio The Bluetooth audio system enables the user to enjoy music played on a portable player from the vehicle speakers via wireless communication. When a Bluetooth device cannot be connected, check the connection status on the Bluetooth* Audio screen. If the device ...

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