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Toyota Corolla Repair Manual: 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 to troubleshoot.

The fact is, however, that if you proceed by inspecting the circuits one by one, troubleshooting of these systems is not complex. If you have adequate understanding of the system and basic knowledge of electricity, the problem can be accurately diagnosed and fixed. This manual is designed based on the above principle to help service technicians perform accurate and effective troubleshooting, and is compiled for the following major ecu controlled systems: the troubleshooting procedures are described on the following pages.

System

  1. Sfi system
  2.  Abs with ebd system
  3.  Electronic controlled automatic transaxle [ect]
  4.  Supplemental restraint system
  5.  Audio system
  6.  Combination meter
  7.  Power door lock control system
  8.  Wireless door lock control system
  9.  Toyota vehicle intrusion protection system
  10. Cruise control system

For using handheld tester

  1.  If the communication is normal when the tester is connected to another vehicle, inspect the diagnosis data link line (bus line) or ecu power circuit of the vehicle.
  2.  If the communication is still impossible when the tester is connected to another vehicle, the problem is probably in the tester itself, so perform the self test procedures outlined in the tester operators manual.
How to troubleshoot ecu controlled systems
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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 m ...

Other materials:

Other functions
■  Switching between outside air and recirculated air modes Press . The mode switches between outside air mode (indicator off) and recirculated air mode (indicator on) each time is pressed. ■ Defogging the windshield Defoggers are used to defog the windshield and front side w ...

Vehicle load limits
Vehicle load limits include total load capacity, seating capacity, towing capacity and cargo capacity. ◆ Total load capacity (vehicle capacity weight): Total load capacity means the combined weight of occupants, cargo and luggage. ◆ Seating capacity: 5 occupants (Front 2, Rear 3) S ...

PostCrash - iBrake
Concept In the event of an accident, the system can bring the vehicle to a halt automatically without intervention by the driver in certain situations. This can reduce the risk of a further collision and the consequences thereof. At standstill After coming to a halt, the brake is released automatic ...

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