Purpose, Function
The starter relay supplies power to the starter by receiving the signal from the PCM.
Construction
The starter relay is installed to the relay and fuse block.
Operation
The contact point is on when the voltage is supplied to the coil based on the signal from the start stop unit, and the battery voltage is supplied to the starter.

Fail-safe
Function not equipped.
Starting System [Skyactiv G 2.0]
EngineKnock Sensor (Ks)
Purpose/Function
Detects abnormal combustion in the cylinder as basic information for mainly
determining the ignition timing.
Detects abnormal combustion in the combustion chamber and inputs it to the
PCM as a knocking signal.
Construction
Installed on the cylinder ...
Vacuum Pump Inspection
1. Pinch open the clamp using pliers and disconnect the vacuum hose from the
vacuum pump..
2. Install the vacuum gauge as shown in the figure, then check the vacuum.
3. Warn up the engine.
If the pressure is less than the specification, inspect for the following.
Malf ...
Air Intake Actuator Inspection [Full Auto Air Conditioner]
1. Connect battery positive voltage to air intake actuator terminal B (or C),
connect terminal C (or B) to ground, and then verify that the air intake actuator
operates as shown in the table.
If the operation condition is not normal, replace the air intake actuator.
...