Hyundai Genesis (DH): Brake System / Stop Lamp Switch Troubleshooting

Troubleshooting
1.
Part diagnosis
Items
Cause
Symptom
Remedy
Switch fuse
Faulty fuse connection, Damaged fuse
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DTC Code : P0504
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Symptom : Shifting gear trouble, Starting failure, Cruise control function cancelation trouble, EPB function cancelation trouble, Stop lamp lighting trouble, ESP OFF light illuminated.
A waveform inspection is performed using an oscilloscope on each part during vehicle acceleration/braking. (Refer to stop lamp switch circuit inspection procedures)

Refer to the relevant repair procedures of the part when something abnormal is discovered in the waveform (Refer to the repair procedures of the relevant part and if necessary replace it)
Relay fuse
Faulty fuse connection, Damaged fuse
-
DTC Code : P0504
-
Symptom : Shifting gear trouble, Starting failure, Cruise control function cancelation trouble, EPB function cancelation trouble, Stop lamp lighting trouble , ESP OFF light illuminated.
Stop lamp switch

    Schematic Diagram System Circuit Diagram Terminal function Description1IGN12Engine Control Module (ECM)3B+4Stop Lmap

    Adjustment 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the lower crash pad. (Refer to Body - "Crash Pad") 3.

    Other information:

    Hyundai Genesis (DH) 2013-2016 Service Manual: Ambient Temperature Sensor Description and Operation

    Description The ambient temperature sensor is located inside the side mirror and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperature. The sensor output will be used for discharge temperature control, temperature regulation door control,

    Hyundai Genesis (DH) 2013-2016 Service Manual: Blower Unit Repair procedures

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