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Tuesday, 26 February 2019 21:59

ASA Webinar Features ‘G’ Jerry Truglia’s ‘Why a DTC is Not Always Displayed’

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Discussing the PIDs that absolutely need to be viewed, Truglia explained that graphing PIDs helps problems stand out. He recommended looking at the LTFT, MAF, MAP, Calculated Load and when checking for a P0420 and P0430 catalyst efficiency DTCs. He recommended graphing the front O2 or air fuel sensor along with the rear O2 sensor at idle, 2000 and 3000 rpms to make sure that the rear O2 sensor does not dither. This efficiency test will uncover a potential issue that causes the P0420 and P0430 DTCs.

 

Regarding time to temperature, Truglia pointed out, “This tells us if the engine is warming up too slowly or too fast. If the thermostat doesn’t open at the right pace, there could be transmission or drivebility issues. Be assured that you need to look at time to temperature.”

 

After providing several more case studies, Truglia advised that CO2 and the ATS Bulleye leak detection tool, along with thermal imaging, can be helpful tools for some DTCs and how to find problems.

 

He ended his presentation by reminding participants, “Don’t just look at the DTCs. Look at all of the information that’s available to you. That’s the moral of the story here.”

 

Molla then resumed control of the broadcast and led a question-and-answer session based on attendees’ feedback. ASA will host a bonus webinar on Feb. 27 on “How Engaging with AMi can Increase Profits” with AMi President Jeff Peevy.

 

On March 20, ASA’s Webinar Wednesday will feature Robert L. Redding Jr., ASA legislative representative for the D.C. office. He will provide an update on the 2019 state legislative sessions and shop-relevant items on the legislative agenda.

 

For more information on ASA, visit asashop.org.


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