NOW:53208:USA01012
http://widgets.journalinteractive.com/cache/JIResponseCacher.ashx?duration=5&url=http%3A%2F%2Fdata.wp.myweather.net%2FeWxII%2F%3Fdata%3D*USA01012
63°
H 63° L 41°
Clear | 9MPH

How to use ECU code reader diagnose a ECU

May 21, 2014

In order to diagnose and remove fault, connect Fcar ECU code reader to diagnostic socket of vehicle, as shown in Pic.4-37.It has special functions as follow, such as engine off-cylinder running, test injection solenoid valve response time, calibrate and replace injector, take rapid sample of engine data, user can limitedly alter ECU program etc. under engine manufacturer restricted working condition or characteristic parameter.

Maintenance technician can use Fcar vehicle code reader to enter ECU memory, monitor sensor output, read DTC, And also selectively program options that already exists in system.Now I'll tell you how to use auto scanner diagnose ECU.

How to use ECU code reader diagnose a ECU
All electronically controlled engines will save DTCs in ECU memory after sensor out of normal operating range. When problems monitored, they will be sent back to ECU, some serious problems will cause yellow or red diagnostic light on instrument panel lighten, when yellow light on, power and RPM of engine will reduce; when red light on, indicates the problem that sensor detected is serious. If ECU has stop control function, then this function will be triggered. Some electronic control system has diagnosis trigger switch, if operate this switch, check engine light on instrument panel will blink, for driver and maintenance technician to read flashing DTC. Some electronic control systems need use jumper to short circuit two terminals in diagnostic connector, to display DTC saved in ECU through flashing of diagnostic light of instrument panel. Pic. 4-35(a)shows a 12-pin diagnostic data connector(DDL), DDL connector normally located in truck cab(the specific position determined by manufacturer, this is a special case of Detroit DDEC I system or DDEC II system, but DDEC Ⅲ system and DDECⅣ system no longer adopt this kind of connector).
In order to flashing display DTC, ignition switch are required to turn off (in OFF) and insert jumper between terminal A and M which are marked clearly on connector. Pic. 4-35(b)shows an example of interpreting flashing DTC, taking DDEC I system or DDEC II system as example, flash code 13 means coolant level sensor has detected coolant level too low, flash code 21 indicates throttle position sensor has detected circuit voltage too high.
http://www.fcar.com

This site uses Facebook comments to make it easier for you to contribute. If you see a comment you would like to flag for spam or abuse, click the "x" in the upper right of it. By posting, you agree to our Terms of Use.

Suburban News Roundup

E-mail Newsletter

Your link to the biggest stories in the suburbs delivered Thursday mornings.


Enter your e-mail address above and click "Sign Up Now!" to begin receiving your e-mail newsletter
Get the Newsletter!

Login or Register to manage all your newsletter preferences.

Community Watch

» Thai-namite plans fall through in East Tosa 9/15

» Preps football photos of the week: Sept. 12 9/12

» Chili'n on the Ave. is Saturday 9/12

» DSW Designer Shoe Warehouse opens tomorrow at Mayfair Collection 9/9

» TosaFest fight had no arrests or reported injuries, police say 9/9

» E-Cigarette store Vape Haven rejected by Tosa Plan Commission 9/8

» 10 Days in Tosa starts today 9/8

» 'Chaotic' scene at TosaFest limited to one area, mayor says 9/7

» Preps football photos of the week: Sept. 5 9/7

» Unruly teens disrupt Tosa Fest Updated:  9/6

» See inside Wisconsin International Academy Saturday 9/5

» Athleta coming to Mayfair 9/2

» Preps football photos of the week: Aug. 29 8/29

» Tosa West's Purifoy, big plays spark 35-15 win 8/29

» 88-year-old passenger dies after three-car crash in Tosa 8/29

» Nordstrom at Mayfair is planning a restaurant, Ruscello, and a coffee bar 8/29

» Police say train accident was 'apparent suicide' by Oak Creek man 8/28

» Milwaukee gets its first green bike lane installed in Riverwest Updated:  8/27

» Mayfair Applebee's closes after 24 years in business 8/27

» Second design workshop for Tosa skate park is Thursday 8/26

» Former Wauwatosa priest pleads not guilty to embezzlement charges 8/26

» The social media story of Wauwatosa West at Wauwatosa East football 8/23

» Trojans rule the city another year 8/22

» Preps football photos of the week: Aug. 22 8/22

» Poll: Who will win the Battle of Wauwatosa: West or East? 8/21

View All Posts Got a tip? Welcome rss
Deal Watch - Milwaukee

Milwaukee's Best Discounts & Deals

Advertisement

Hidden Tosa

 

"Hidden Tosa" is a semi-regular feature where reporter Rory Linnane explores the closed down and closed off parts of Wauwatosa.

Local Business Directory

CONNECT