Toyota Tacoma manuals

Toyota Corolla Repair Manual: How to proceed with troubleshooting

Hint

: carry out troubleshooting in accordance with the procedures on the following page. Here, only the basic procedures are shown. Details are provided in the diagnostics section, showing the most effective methods for each circuit. Confirm the troubleshooting procedures first for the relevant circuit before beginning troubleshooting of that circuit.

1 Vehicle brought to workshop

2 Customer problem analysis

2 Customer problem analysis

  1.  ask the customer about the conditions and environment when the problem occurred.

  1. Check the battery positive voltage.

    Voltage: 11 Ц 14 v (engine stopped)

  2.  visually check the wire harness, connectors and fuses for open and short, etc.
  3.  warm up the engine to the normal operating temperature.
  4.  confirm the problem symptoms and conditions, and check for dtcs according to the related chart.

Ok go to step 5

4 Dtc chart

4 Dtc chart

  1. Check the results obtained in step 3, then confirm the inspection procedures for the system or the part which should be checked using the dtc chart.

Go to step 6

5 Problem symptoms chart

  1. Check the results obtained in step 3, then confirm the inspection procedures for the system or the part which should be checked using the problem symptoms table.

6 Circuit inspection or parts inspection

6 Circuit inspection or parts inspection

  1. Confirm the circuit for the system or the part which should be checked using the problem symptoms table or the results obtained in step 4.

7 Repair

7 Repair

  1. Repair the affected system or part in accordance with the instructions in step 6.

8 Confirmation test

8 Confirmation test

  1. After completing repairs, confirm that the problem has been solved (if the problem does not recur, perform a confirmation test under the same conditions and in the same environment as when it occurred for the first time).

End

End

General information
There are many ecu controlled systems used in the corolla. In general, ecu controlled system are considered to be very intricate and require a high level of technical knowledge and expert skill t ...

Customer problem analysis
Hint: in troubleshooting, the problem symptoms must be confirmed accurately, meaning that all preconceptions must be set aside in order to make an accurate judgement. To ascertain what the ...

Other materials:

Vehicle identification
■ Vehicle identification number The vehicle identification number (VIN) is the legal identifier for your vehicle. This is the primary identification number for your Toyota. It is used in registering the ownership of your vehicle. This number is stamped on the top left of the instrument p ...

Circuit description
While driving uphill with cruise control activated, in order to minimize gear shifting and provide smooth cruising overdrive may be prohibited temporarily under some conditions. The cruise control ecu sends o/d cut signals to the ecm as necessary and the ecm cancels overdrive shifting until ...

Exterior/interior trim
Preparation Recomended tools Equipment Vehicle control system Preparation Recomended tools ...

© 2011-2021 Copyright www.tcorolla.net