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The Role of Scan Tool Graphing in Complex Auto Mechanic Diagnostics

Automotive Training Centre

When today’s vehicles roll into the garage with a check engine light or a strange misfire, gone are the days of relying on guesswork. Graphing brings those events to light. Complex auto mechanic diagnostic problems now require high-level tools and skills, and one of the most valuable is scan tool graphing.

Mechanic 177
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Throttle-By-Wire Diagnostics

Tomorrow's Technician

During events like increased loads on the alternator caused by electric power steering, the throttle angle will keep the engine speed constant. The other advantage to throttle-by-wire is the ability to manage power from the engine during ABS, ESC and traction corrections. Codes P0120-P0124 are for sensor A.

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P0442: EVAP System Leak Detected (Small Leak)

RepairSmith

An Illuminated Check Engine Light It’s almost impossible to physically detect an EVAP leak. So when the leak detection pump in the exhaust system suspects a small EVAP leak event, it immediately turns the Check Engine Light on.