Advertisment for Reading Codes in Your Car
Using a Diagnostic Motorcar Code Reader
Unravel the mysteries of the "Bank check Engine" light with a car code reader.
Diagnose machine problems without going to a mechanic with an auto code reader. But plug it into the auto's figurer system, then interpret the trouble lawmaking readout.
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Use the car lawmaking reader every bit a starting point
Photograph 1: Plug in
Plug your motorcar code reader into the diagnostic link connector under the dash (engine off). Then get-go the vehicle and follow the auto code reading procedure in the instruction manual.
Nothing can knock your day off track faster than a "Cheque Engine" light popping up on your dash. You lot wonder if you lot should pull over and close off your vehicle or drive right to a shop. An engine lawmaking reader/scanner tin help you make the bulldoze/no drive conclusion and even help y'all ready the trouble. Information technology works past plugging into the car's calculator arrangement and displaying a "trouble code."
An engine code reader/scanner is worth buying if you're a fairly competent amateur mechanic who understands how an engine works. But it's not a silver bullet that will always tell yous exactly what'due south incorrect. An motorcar lawmaking reader give you lot a head starting time, only yous'll even so have to exercise some detective work before you beginning pulling and replacing parts (more on this later).
The to the lowest degree expensive auto code reader units are elementary car lawmaking readers that burp up an alphanumeric trouble code just no data about what information technology means. Yous'll take to look up the code in a reference book or search the Internet. Midpriced units really display the problem on the screen, like "P0115 Engine Coolant Temperature Circuit Malfunction." One model fifty-fifty accesses the Internet, then you tin can upload the trouble lawmaking to a Web site that has information on the most likely cause of the problem.
But if you're a true grease monkey, go for a more expensive scanner. A scanner gives you real-time "live" information and then you see the same information your car's computer is seeing. That saves you the hassle of diving under the hood (with a wiring diagram in paw), piercing wires and taking sensor readings.
Motorcar code reading and scanning sound simple, right? Well, there's more to it than that. A lawmaking that indicates your oxygen sensor is "lean" can mean the sensor is expressionless, or information technology can mean that the air/fuel mixture actually is lean and you've got either a vacuum leak or a fuel problem. How practice you know? Hither are three means to get to the root of a problem without replacing adept parts.
- Go to the auto code reader/scan tool manufacturer's Spider web site to see if it has data on your trouble code.
- Take advantage of Cyberspace forums. Simply search for your car'south model and add "forum" to the search term. Annals for the site (usually free) and post your question, including your vehicle's yr, mileage, code number and what you've washed then far. Y'all'll be surprised by the number and quality of responses you get.
- Subscribe to an online store manual. It volition accept not only all the carmaker's technical service bulletins listed but besides the consummate diagnostic procedure for your particular code. It will walk you through the testing procedure, telling you which wires to bank check and what voltages you should see. The services also include component locators to help you find the part in your vehicle, and wiring diagrams showing the connector position for each wire.
Required Tools for this Project
Yous'll need a code reader or scanner, along with a computer with cyberspace access for interpreting the trouble codes.
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Source: https://www.familyhandyman.com/project/using-a-vehicle-diagnostic-code-reader/
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