Hyundai Genesis: Brake System / Stop Lamp Switch Troubleshooting

Troubleshooting

1.

Part diagnosis Items Cause Symptom Remedy Switch 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. 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 • Damaged wiring of each part • Faulty connection • Each part is defective - 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 signal electronic module (If it applies) - DTC Code : P0504, C2130, C2131 - Symptom : Shifting gear trouble, Starting failure, Cruise control function cancelation trouble, EPB function cancelation trouble, Stop lamp lighting trouble , ESP OFF light illuminated. Engine control module(ECM) - DTC Code : P0504 - Symptom :Shifting gear trouble,Cruise control function cancelation trouble Body control module (BCM) - Shifting gear trouble Shift-lock solenoid - Shifting gear trouble Inhibitor switch - Symptom : Shifting gear trouble, Starting failure, Cruise control function cancelation trouble, EPB function cancelation trouble Smart Key Unit(SMK) - Starting failure Electronic parking brake - Symptom : EPB function cancelation trouble , ESP OFF light illuminated. ABS/VDC control module (Pressure sensor) - Symptom : ESP OFF light illuminated.

2.

Symptom diagnosis Symptom Part that could be the cause Remedy Trouble starting Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic module, ABS/VDC control module, Each wire, Connector Inspect waveform 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) Trouble shifting gears Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic module, BCM, ECM, Inhibitor switch, Each wire, Connector ESP OFF light illuminated Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic module, ABS/VDC control module, Each wire, Connector P0504 Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic module, ECM, Each wire, Connector Stop lamp does notworking Switch fuse, Relay fuse, Stop lamp switch, Stop signal electronic module, Wire/Connector disconnected Stop lamp always turns on Stop lamp switch, Stop signal electronic module, Wiring short circuit, Damaged fuse

3.	Stop lamp switch system diagnosis SSEM : Stop Signal Electronic Module

4.	Refer to DTC guide when the related DTC codes are displayed.

Stop Lamp Switch Schematic Diagrams

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

Stop Lamp Switch Repair procedures

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

Other information:

Hyundai Genesis (DH) 2013-2016 Service Manual: Brake Booster Repair procedures

Brake Booster Operating Test For simply checking the brake booster operation, perform the following tests. 1. Run the engine for one or two minutes, and then stop it.Depress the pedal several times, and if the pedal stroke gradually decreases, the brake booster operates properly. If there ...

Hyundai Genesis (DH) 2013-2016 Service Manual: Manifold Absolute Pressure Sensor (MAPS) Description and Operation

Description Manifold Absolute Pressure Sensor (MAPS) is a speed-density type sensor and is installed on the surge tank. It senses absolute pressure of the surge tank and transfers the analog signal proportional to the pressure to the ECM. By using this signal, the ECM calculates the intak ...