Hyundai Sonata: Engine Control System / Ambient Temperature Sensor (ATS) Repair procedures

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the ATS connector.
3.
Measure resistance between the ATS terminals 1 and 2 [B1/S1].
4.
Check that the resistance is within the specification.

Specification: Refer to "Specification"

Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Remove the under cover front pannel.
(Refer to Engine Mechanical System - "Engine and Transaxle Assembly")
3.
Disconnect the connector, an then remove the ambient temperature sensor (A).

Installation
   
Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.
1.
Install in the reverse order of removal.
Ambient Temperature Sensor (ATS) Schematic Diagrams
Circuit Diagram ...

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Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Thermostat Repair procedures
Removal     Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. 1. Drain engine coolant so that its level would be under the thermostat height. 2. Remove the radiator lower hose. (Refer to Cooling System - "Radiator Hose ...

Hyundai Sonata LF 2014-2019 Service Manual: Timing Chain Cover Repair procedures
Removal     • Use fender covers to avoid damaging painted surfaces. • To avoid damage, unplug the wiring connectors carefully while holding the connector portion.     Mark all wiring and hoses to avoid misconnection.     ...

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