Toyota Corolla (E120): How to proceed with troubleshooting

1 Vehicle brought in

2 Customer problem analysis check and symptom check

2 Customer problem analysis check and symptom check

3 Problem symptoms table

3 Problem symptoms table

  1. Without applicable symptoms, proceed to ”a”
  2.  with applicable symptoms, proceed to ”b”

4 Perform troubleshooting in the following method, depending on

4 Perform troubleshooting in the following method, depending on malfunction symptom

  1. Terminals of ecu
  2.  inspection
  3.  on–vehicle inspection

5 Adjustment, repair or replacement

End

End

Customer problem analysis check

Location

Location

Terminals of ecu

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    Inspection
    1. Inspect driver’s door lock Inspect the door lock motor operation. Standard: If the result is not as specified, replace the door lock assembly. Inspect the door lock and unlock switch continuity. Standard: If the result is not as specified, replace the door lock assem ...

    Overhaul
    1. Drain clutch fluid 2. Remove brake master cylinder sub–assy 3. Remove brake booster assy 4. Disconnect clutch reservoir tube Loosen the clip and disconnect the clutch reservoir tube from the clutch master cylinder assy. Hint: use a container to catch the fluid. 5. Disconnect ...

    Circuit description
    The throttle position sensor is mounted in the throttle body and detects the throttle valve opening angle. When the throttle valve is fully closed, a voltage of approximately 0.3 To 1.0 V is applied to terminal vta of the ecm. The voltage applied to terminal vta of the ecm increases in pro ...