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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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Warning buzzer does not sound (key reminder warning, light reminder warning)
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:

Inspection
1. Inspect sliding roof limit switch Inspect the sliding roof limit switch continuity. Standard: If the continuity is not as specified, replace the switch. 2. Inspect sliding roof drive gear subassy Connect the positive (+) lead from the battery to terminal 2 and the nega ...

Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the correct procedure as given in these sections. CAUTION The engine compartment contains many mechanisms and fluids that may move suddenly, become hot, or become electrically energized. To avoid death or serious injury, observe t ...

Hood
Release the lock from the inside of the vehicle to open the hood. 1 Pull the hood lock release lever. The hood will pop up slightly. 2 Pull up the auxiliary catch lever and lift the hood. 3 Hold the hood open by inserting the support rod into the slot. CAUTION ■Pre-driving check C ...

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