Toyota Tacoma manuals

Toyota Corolla Repair Manual: Malfunction in tachometer

Wiring diagram

Inspection procedure

Inspection procedure

  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 assy with connectors still connected.
  2.  Connect the oscilloscope to the terminals c919 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 5 (tach) of ecm and c919 of combination meter connector.

Standard: there is continuity.

Check and replace ecm

Check and replace ecm

Malfunction in speedometer
Wiring diagram Inspection procedure 1 Check combination meter assy Remove the combination meter assy with connector still connected.  check voltage.  Jack up either o ...

Malfunction in fuel receiver gauge
Wiring diagram Inspection procedere 1 Inspect fuel sender gage assy Disconnect the connector fuel sender gauge. check the float position between e and f and measure the resistance betw ...

Other materials:

What to do if... (Troubleshooting)
If you have a problem, check the following before contacting your Toyota dealer. The doors cannot be locked, unlocked, opened or closed You lose your keys ● If you lose your keys or mechanical keys, new genuine keys or mechanical keys can be made by your Toyota dealer. ● If you lo ...

Overhaul
Hint: components: 1. Remove front wheel 2. Disconnect front stabilizer link assy lh Remove the nut and disconnect the front stabilizer link assy lh from the shock absorber assy front lh. Hint: if the ball joint turns together with the nut, use a hexagon (6 mm) wrench to hold the st ...

Cd cannot be inserted or is ejected right after insertion
Wiring diagram Inspection procedure 1 Check if a proper cd is inserted Check that a proper cd is inserted.  Make sure that the cd is normal audio cd, and that there is no deformation, flaw, stain, burr and other defects on the cd. Standard: normal audio cd. Reference: ...

2011-2022 Copyright www.tcorolla.net