P0350 Hyundai -

Question

Where is the primary and secondary coil

Answer 1

Hi there, 

The primary coil and the secondary coil are all part of the same coil. The primary is the one that runs directly to the spark plug while the secondary is the one that has the plug wire on it. When you are looking at this code, it's basically telling you there is a malfunction with the ignition coils.

General Description 

With the ignition switch in the ON or START position, voltage is applied to the ignition coil.
Each ignition coil consists of two coils. High tension leads go to each cylinder from the ignition coils.
The ignition coils fire two spark plugs on every power stroke (the cylinder under compression and the cylinder on the exhaust stroke). The Powertrain Control Module (PCM) provides a switching circuit to ground for energizing the primary ignition coils. The PCM uses the crankshaft position sensor and camshaft position sensor signal to time the energizing of the coil. When a primary ignition coil is energized and de-energized, the secondary coil produces a high voltage spike to the attached spark plugs.