Hyundai Sonata LF: Engine Control / Fuel System / Engine Control System

Hyundai Sonata LF 2014-2019 Service Manual / Engine Control / Fuel System / Engine Control System

Troubleshooting

Basic Troubleshooting Basic Troubleshooting Guide Customer Problem Analysis Sheet Basic Inspection Procedure Measuring Condition of Electronic Parts' Resistance The measured resistance at high temperature after vehicle running may be high or low...

Description and Operation

OBD-II review 1. Overview The California Air Resources Board (CARB) began regulation of On Board Diagnostics (OBD) for vehicles sold in California beginning with the 1988 model year...

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Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures


Inspection Check it by the procedure below to see if the function of the ECM is normal. 1. Turn the ignition key to the "ON" position. 2. Cover the forward facing sensor. 3. Head a light to the rearward looking sensor. 4. The ECM should be darkened as soon as the rearward looking sensor detects the light...

Hyundai Sonata LF 2014-2019 Service Manual: Description and Operation


Description Ignition timing is controlled by the electronic control ignition timing system. The standard reference ignition timing data for the engine operating conditions are pre-pro grammed in the memory of the ECM (Engine Control Module). The engine operating conditions (speed, load, warm-up condition, etc...

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