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
    When a misfire occurs in the engine, hydrocarbons (hc) enter the exhaust in high concentrations. If this hc concentration is high enough, there could be an increase in exhaust emissions levels. High concentrations of hc passing through the catalyst also cause to temperature of the catalyst to ...

    Stabilizer bar front
    Replacement Hint: components: 1. Remove front wheel 2. Remove front stabilizer link assy lh Remove the 2 nuts and stabilizer bar link. Hint: if the ball joint turns together with the nut, use a hexagon wrench (6 mm) to hold the stud. 3. Remove front stabilizer link assy rh Hint: ...

    Tape is tangled due to incorrect tape speed or auto–reverse malfunction
    Inspection procedure 1 Check for any foreign object Check for any foreign object. Check that no foreign material and troubles are detected in the radio receiver assembly cassette tape player. Standard: no foreign material and trouble detected. 2 Replace cassette tape with an ...