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A car owner must know some obd basic RSS
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By Lucy Quliar on August 9, 2011 | Leave a response
In modern,more and more people can easily buy a car.even a family own above three
cars.when you drive some years,it maybe lead problem,such as check engine light on,airbag Search
or oil problem lead you can’t continue to drive.so you should repair and pay big bucks.there
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is a way can keep your money down on your car repair,if you know some obd knowledge. So
what is OBD-II?
What is OBD-II?
OBD-II abbreviation of the On-Board Diagnostics, obd the second generation. On-Board
Diagnostic systems are in most cars and light trucks on the road today. During the ’70s and Categories
early 1980′s manufacturers started using electronic means to control engine functions and
diagnose engine problems. This was primarily to meet EPA emission standards. Through Auto Code Reader
the years on-board diagnostic systems have become more sophisticated. OBD-II, a new auto user manual
standard introduced in the mid-’90s, provides almost complete engine control and also car key programmer
monitors parts of the chassis, body and accessory devices, as well as the diagnostic control car repair terms
network of the car. OBD trouble codes lookup
How do I know whether my car is OBD-II compliant? OBDII PDF E-BOOK Download
There are five basic OBD-II protocols in use, on the communication pattern between the on-
board diagnostic computer and the scanner console or tool.While there have been some
manufacturer changes between protocols in the past few years, as a rule of thumb.
Archives
Chrysler products and all European and most Asian imports use ISO 9141 circuitry or
KWP2000. August 2011 (8)
GM cars and light trucks use SAE J1850 VPW (Variable Pulse Width Modulation) July 2011 (97)
Fords use SAE J1850 PWM (Pulse Width Modulation) communication patterns. June 2011 (1)
CAN is the newest protocol added to the OBD-II specification, and it is mandated for all
2008 and newer model years.
You may also want to know which protocol is used on a specific automobile by examining Recent Comments
the connector socket carefully.
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obd connector picture reasons for an OBD diagnostic
Failure
J1850 VPW –The connector should have metallic contacts in pins 2, 4, 5, and 16,but Kayleen on What is OBDII(On-Board
not 10. Diagnostic)
ISO 9141-2/KWP2000 –The connector should have metallic contacts in pins 4, 5, 7, Jewel Fraize on free 2010 Chevrolet
2. 15, and 16. Avalanche Owner’s Manual pdf
J1850 PWM –The connector should have metallic contacts in pins 2, 4, 5, 10, and16. download
CAN –The connector should have metallic contacts in pins 4, 5, 6, 14 and 16.
If the vehicle is not OBD-II compliant, you cannot use a generic OBD-II scan tool such as
Autel MaxiScan MS309 to obtain diagnostic information from your vehicle.
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