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:

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 the handheld tester. 1 Read value of handheld tester(skid control sensor) Check that there is no difference between the speed value output from the speed sensor displ ...

Front door belt moulding assy lh
Replacement Hint: the installation procedures are the removal procedures in reverse order. Use the same procedures for the rh side and lh side. 1. Remove front armrest assy lh 2. Remove power window regulator master switch assy (w/ power window) 3. Remove front armrest base panel up ...

Warning lights
Warning lights inform the driver of malfunctions in the indicated vehicles systems. *1: Vehicles without a smart key system: These lights turn on when the engine switch is turned to the ON position to indicate that a system check is being performed. They will turn off after the engine is ...

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