TRUE That........If You Keep Yourself Depending On DIAG Tools Then You Can't Do Anything.....We Have Sorted Dozens Of Cars With OLD SKool Way Of Solving Via CEL Reading .....Sometimes You Just Have To Be A Step Ahead And Look Yourself And Use Your M.M......!!
That's NITTO Tape's Mechanics Who Depend On DLC Stuff And Blame It For Every of Their Non-sense DOne...!!!
DLC Is Good For Fuel Trim Checks And Reading It And For Sensor Check.......Leave Aside DLC...Hardly Anyone Knows Here How To Read STFT LTFT Properly And Diagnose What Is Issue....!!
You Can't Beat OLD Skool If You Really Want To Sort Stuff Out
It Takes Me A Bit Less Than YEAR To Figure Out What;s Causing My Car To LEAN But I Do W.o Any Diag BOX Or DLC ...!!