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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
Hint: start the inspection from step 1 in case of using the handheld tester and start from step 2 in case of not using handheld tester. 1 Inspect brake actuator assy Select the datalist mode on the handheld tester.  check the operation sound of the abs pump motor when operating it ...

Shifting the shift lever
Vehicles without a smart key system: While the engine switch is in the ON position, depress the brake pedal and move the shift lever. Vehicles with a smart key system: While the engine switch is in IGNITION ON mode, depress the brake pedal and move the shift lever. When shifting the shif ...

Registering a Bluetooth phone for the first time
To use the hands-free system, it is necessary to register a Bluetooth phone with the system. Once the phone has been registered, it is possible to use the hands-free system. For details about registering a Bluetooth device 1 Turn the Bluetooth connection setting of your cellular phone on. 2 ...

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