Hyundai Sonata: Auto Light Switch. Repair procedures
Inspection
Lighting Switch Inspection
With the multi function switch in each position, make sure that continuity
exists between the terminals below. If continuity is not as specified, replace
the multi-function switch.

Lighting Switch (Auto Light)

Schematic Diagrams
Circuit Diagram
...
Auto Light Sensor. Repair procedures
Inspection
In the state of IGN1 ON, when multi function switch module detects auto
light switch on, tail lamp relay output and head lamp low relay output are controlled
according to auto lig ...
See also:
Headlamp delay
If you turn the ignition switch to the ACC or OFF position with the headlights
ON, the headlights (and/or tail lights) remain on for about 20 minutes. However,
if the driver’s door is opened and ...
Knock Sensor (KS) Schematic Diagrams
Circuit Diagram
...
Manifold Absolute Pressure Sensor (MAPS). Repair procedures
Inspection
1.
Connect the GDS on the Data Link Connector (DLC).
2.
Measure the output voltage of the MAPS at idle and IG ON.
...
