The temperature will increase by turning the knob to the right.
The temperature will decrease by turning the knob to the left.
Hyundai Elantra AD (2016-2020) Service Manual: Camshaft Position Sensor (CMPS) Repair procedures
Inspection
1.
Check the signal waveform of the CMPS and CKPS using the GDS.
Specification : Refer to "Wave Form"
Removal
•
DON’T remove the camshaft position sensor during engine
running or right after engine stops, or a scald by the flowed out engine
...
Hyundai Elantra AD (2016-2020) Service Manual: Starter Relay Repair procedures
Inspection
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the fuse box cover.
3.
Remove the starter relay (A).
4.
Using an ohmmeter, check that there is continuity between each terminal.
TerminalContinuity30 - 87NO85 - 86YES
5.
Apply 12V ...