On Board Diagnostics (OBC) For Cars

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On Board Diagnostics (OBC) For Cars
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Introduction

• OBD stands for "On-Board Diagnostics".
• OBD is a computer based system designed to reduce
  emissions by evaluating the performance of major
  engine components.
• The system also monitors the performance of your
  ignition system and transmission operation.
• It generally functions by placing different kinds
  of sensors in vital areas of the vehicle.
• The system reports back to the diagnostic system
  whether those specific areas are working
  perfectly or not.

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Components of OBD System

• ECU (Electronic Control Unit) which uses input
  from oxygen sensors to control actuators
• Actuators are fuel injectors used to get the
  desired performance out of ECU.
• MIL (Malfunction Indicator Light) or "check
  engine" light provides an early warning of
  malfunctions to the vehicle owner.
• DLC (Diagnostic Link Connector) help vehicles
  support hundreds of parameters, using a device
  called a scan tool.

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OBD-I

• First generation OBD systems which were
  developed throughout the 1990s.
• These system employ proprietary connectors,
  hardware interfaces, and protocols.
• Usually a mechanic has to buy a tool for every
  different vehicle in order to access diagnostic
  information.
• OBD-I scan tools support multiple protocols
• They are supplied with a wide variety of
  adapter cables.

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OBD-II

• OBD-II is an advance update of OBD-I.
• This system comes with certain standards that
  specify the type of diagnostic connectors OBD-II
  compliant vehicles were required to use.
• The standards also state all the electrical
  signaling protocols available and the messaging
  format.
• OBD II is extensively used by garages and
  professional mechanics.

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Benefits

• Help technicians accurately diagnose and repair
  complex glitches.
• Ensures design of reliable and strong engine
  optimization systems.
• Exhaust emissions can be reduced by identifying
  the emission controls
• They also provide cost effective emission
  inspections.
• Works as long as the life of the vehicle.
• Prompt detection of malfunctions to prevent
  further failures.
• Provide vital data about the area of
  malfunction.

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Process of OBD

• The OBD system incessantly monitors and
  assesses the functioning of the vehicle.
• It assesses the signals displayed on the
  computer directly from the system.
• It then verifies the functionality of the
  malfunction criteria.
• Through warning indicators it indicates the
  driver of the particular fault.

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• I hope BP Auto Spares India are able to help you
  with the concept of On Board Diagnostics, its
  benefits, usage and process in keeping your
  engine, transmission and Spare parts in a better
  condition

Head Office BP Impex 4984-4985, Roshanara Road
Delhi 110007, INDIA Phone - 91 11
23824308, 91 9971119928 info_at_bpimpex.in www.b
pautosparesindia.com/tata-spare-parts/