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Toyota Corolla Repair Manual: Malfunction in water temperature receiver gauge

Toyota Corolla Repair Manual / Diagnostics / Combination meter / Malfunction in water temperature receiver gauge

Wiring diagram

Inspection procedure

Inspection procedure

1 Read value of handheld tester

  1. Check output value of ecm.
  1.  Connect the handheld tester to dlc3.
  2.  Turn the ignition switch to on and push the handheld tester main switch on.
  3.  Select the data list mode on the handheld 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 c98 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 c98 of combination meter connector.

    Standard: there is continuity.

Check and replace ecm

Check and replace ecm

Malfunction in fuel receiver gauge
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Wiring diagram Inspection procedere 1 Check buzzer Check that all of the warning buzzers sound. 2 Inspect front door courtesy lamp switch assy 3 Inspect unlock warning switch ...

Other materials:

Wiring diagram
1 Inspect terminal voltage(pi) (a) turn Turn the ignition switch to on.  measure voltage between terminal 5 (pi) of cruise control ecu assy and body ground, when the cruise control main switch button is on and off. Ok: 2 Inspect combination meter assy 3 Check harn ...

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1 With the headlights on, push the lever away from you to turn on the high beams. Pull the lever toward you to the center position to turn the high beams off. 2 Pull the lever toward you and release it to flash the high beams once. You can flash the high beams with the headlights on or off. &# ...

Initialization
1. Reset memory Caution: perform the reset memory (at initialization) when replacing the automatic transaxle assy, engine assy or ecm. Notice: handheld tester only Turn the ignition switch off.  connect the handheld tester to the dlc3.  turn the ignition switch to the on ...

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