Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Combination meter / Malfunction in water temperature receiver gauge

Toyota Corolla (E120): Malfunction in water temperature receiver gauge

Wiring diagram

Inspection procedure

Inspection procedure

1 Read value of hand–held tester

  1. Check output value of ecm.
  1.  Connect the hand–held tester to dlc3.
  2.  Turn the ignition switch to on and push the hand–held tester main switch on.
  3.  Select the data list mode on the hand–held tester.

2 Inspect combination meter assy

2 Inspect combination meter assy

(Reference) inspection using oscilloscope

(Reference) inspection using oscilloscope

  1.  check the input signal waveform.
  1.  Remove the combination meter with connectors still connected.
  2.  Connect the oscilloscope to the terminals c9–8 of combination meter assy and body ground.
  3.  Start engine.
  4.  Check the signal waveform.

3 Check harness and connector(between ecm and combination

3 Check harness and connector(between ecm and combination meter assy)

  1. Remove the combination meter.
  2. check the continuity between terminals 14 (thwo) of ecm and c9–8 of combination meter connector.

    Standard: there is continuity.

Check and replace ecm

Check and replace ecm

    Share this page:

    Other materials:

    Circuit description
    The seat position sensor circuit consists of the airbag sensor assy center and seat position sensor. Dtc b1153/25 is recorded when a malfunction is detected in the seat position sensor circuit. Wiring diagram ...

    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 ...

    Problem symptoms table
    If a normal code is displayed during the dtc check but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page. Notice: when replacing skid control ecu, sensor or etc., Turn the ignition swi ...