Hyundai Genesis: Cruise Control System / Cruise Control Switch Repair procedures

Removal
1.
Turn the ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air-bag module from the steering wheel.
(Refer to Restraint - "Driver Airbag (DAB) Module and Clock Spring")
3.
Remove the cover (A) after loosening the screw.

4.
Disconnect the cruise control switch connector.
5.
Remove the cruise control switch mounting screws (A).

6.
Remove the cruise control switch (A).

Inspection
[Measuring Resistance]
1.
Disconnect the cruise control switch connector from the control switch.

2.
Measure resistance between terminals on the control switch when each function switch is ON (switch is depressed).
Function switch
Terminal
Resistance (k?)
SET -
5 - 6
0.31 ~ 0.35
RES +
5 - 6
0.52 ~ 0.58
CANCEL
5 - 6
0.17 ~ 0.19
CRUISE
5 - 6
0.84 ~ 0.92

3.
If not within specification, replace switch.
[Measuring Voltage]
1.
Connect the cruise control switch connector to the control switch.

2.
Measure voltage between terminals on the harness side connector when each function switch is ON (switch is depressed).
Function switch
Terminal
Voltage (V)
SET -
5 - 6
1.04 ~ 1.44
RES +
5 - 6
1.55 ~ 1.99
CANCEL
5 - 6
0.61 ~ 0.91
CRUISE
5 - 6
2.24 ~ 2.44

3.
If not within specification, inspect the control switch resistance.
The measuring resistance value is not within specification, replace the switch and measure the voltage again.
4.
If resistance is OK but, the measured voltage is not within specification, inspect the wiring harness and connectors between the switch and the ECM.
Installation
1.
Install in the reverse order of removal.
Cruise Control Switch Schematic Diagrams
Circuit Diagram ...

Smart Cruise Control System
...

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