Toyota Tacoma manuals

Toyota Corolla Repair Manual: Inspection procedure

Hint

:

1 Inspect heated oxygen sensor(heater resistance)

  1. Disconnect the h5 or h8 heated oxygen sensor connector.
  2.  measure the resistance between the terminals of the heated oxygen sensor connector.

Standard:

Standard:

  1. Reconnect the heated oxygen sensor connector.

2 Inspect efi relay

2 Inspect efi relay

  1. Remove the efi relay from the engine room r/b.
  2.  check for continuity in the efi relay.

Standard:

Standard:

  1. Reinstall the efi relay.

3 Inspect ecm(ht1a or ht1b voltage)

3 Inspect ecm(ht1a or ht1b voltage)

  1. Turn the ignition switch on.
  2.  measure the voltage between the applicable terminals of the e4 and e5 ecm connectors.

Standard:

Standard:

4 Check harness and connector(heated oxygen sensor  ecm,

4 Check harness and connector(heated oxygen sensor ecm, heated oxygen sensor efi relay)

  1. Check the harness and connector between the ecm and heated oxygen sensor connectors.
  1.  Disconnect the h5 or h8 heated oxygen sensor connector.
  2.  Disconnect the e4 or e5 ecm connector.
  3.  Check the resistance between the wire harness side connectors.

Standard (check for open):

Standard (check for open):

Standard (check for short):

Standard (check for short):

  1. Reconnect the heated oxygen sensor connector.
  2.  Reconnect the ecm connector.
  1.  check the harness and connector between the heated oxygen sensor connector and efi relay.
  1.  Disconnect the h5 or h8 heated oxygen sensor connector.
  2.  Remove the efi relay from the engine room r/b.
  3.  Check the resistance between the wire harness side connectors.

Standard (check for open):

Standard (check for open):

Standard (check for short):

Standard (check for short):

  1. Reconnect the heated oxygen sensor connector.
  2.  Reinstall the efi relay.

Replace ecm

Replace ecm

Circuit description
Refer to dtc p0130 Hint: the ecm provides a pulse width modulated control circuit to adjust current through the heater. The heated oxygen sensor heater circuit uses a relay on the b+ side of the ...

Mass or volume air flow circuit
Dtc p0100 mass or volume air flow circuit Dtc p0102 mass or volume air flow circuit low input Dtc p0103 mass or volume air flow circuit high input Circuit description The maf (mass air flow) sen ...

Other materials:

Luggage door hinge torsion bar rh
Replacement Hint: installation is in the reverse order of the removal. But the installation is indicated only when it has a point. In the lh side, work in the same procedure as in the rh side. Since the removal of the torsion bar will cause no tension, operation of opening and closi ...

Inspection procedure
Hint: if different dtcs related to different systems that have terminal e2 as the ground terminal are output simultaneously, terminal e2 may be open. Read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malf ...

Inspection procedure


Handheld tester: 1 Check operation of stop light Check if the stop lights go on and off normally when the brake pedal is depressed and released. 2 Inspect stop light switch assy Check the resistance between the terminals when the switch is turned on and off. Standard: ...

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