Toyota Tacoma manuals

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 air–fuel 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:

Antenna cord sub–assy
Replacement Hint: components: 1. Remove instrument panel sub–assy upper Hint: refer to the procedure until the step, ”remove instrument panel sub–assy upper” of instrument panel sub–assy lower. Remove the related parts as long as the antenna cord sub–assy can be removed. 2. Remo ...

Precaution
1. Check that the battery cables are connected to the correct terminals. 2. Disconnect the battery cables when the battery is given a quick charge. 3. Do not perform tests with a high voltage insulation resistance tester. 4. Never disconnect the battery while the engine is running. 5. Check that ...

Circuit description
Refer to dtc p0130 Dtc no Dtc detection condition Trouble area P0136 The following condition (a) or (b) continues for 300 seconds or more: During driving with the engine warmed up, heated oxygen sensor o tp t does not change output change. he ...

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