SYMPTOM TROUBLESHOOTING [DYNAMIC STABILITY CONTROL (DSC)]

id0403b2804200

• Verify the symptoms, and perform troubleshooting according to the appropriate number.

No.

Symptom

1

Any of the following lights are not illuminated when the ignition is switched ON:

•  ABS warning light

•  Brake system warning light

•  TCS/DSC indicator light

•  DSC OFF indicator light

2

Any of the following lights remain illuminated:

•  ABS warning light

•  TCS/DSC indicator light

•  DSC OFF indicator light

3

Brake system warning light remains illuminated

4

A malfunction in the system even though the ABS warning light, brake system warning light, TCS/DSC indicator light and DSC OFF indicator light are not illuminated

5

ABS or TCS^*1 operates frequently

TCS does not work correctly

6

DSC^*2 operates frequently

DSC does not work correctly

7

Hill launch assist (HLA) operates even on a down slope

Hill launch assist (HLA) does not operate on a slope

8

Smart Brake Support/Smart City Brake Support (SBS/SCBS) indicator light (amber) stay on

No.	Symptom
1	Any of the following lights are not illuminated when the ignition is switched ON: • ABS warning light • Brake system warning light • TCS/DSC indicator light • DSC OFF indicator light
2	Any of the following lights remain illuminated: • ABS warning light • TCS/DSC indicator light • DSC OFF indicator light
3	Brake system warning light remains illuminated
4	A malfunction in the system even though the ABS warning light, brake system warning light, TCS/DSC indicator light and DSC OFF indicator light are not illuminated
5	ABS or TCS^*1 operates frequently
TCS does not work correctly
6	DSC^*2 operates frequently
DSC does not work correctly
7	Hill launch assist (HLA) operates even on a down slope
Hill launch assist (HLA) does not operate on a slope
8	Smart Brake Support/Smart City Brake Support (SBS/SCBS) indicator light (amber) stay on

X: Applied

Troubleshooting item	1	2	3	4	5	6	7	8
Troubleshooting item
DSC HU/CM does not operate	X	X	X					X
Communication error between DSC HU/CM and instrument cluster	X	X	X					X
DSC HU/CM internal malfunction	X	X	X					X
Instrument cluster malfunction	X	X	X					X
Brake fluid amount is low			X
DSC HU/CM detected malfunction (input and output device malfunction)		X	X		X	X	X	X
DSC HU/CM detects low voltage in power supply		X	X
DSC HU/CM ground malfunction	X	X	X
No connection at DSC HU/CM connector		X	X
Parking brake does not release			X				X
Parking brake switch or brake fluid level sensor stuck on			X
Short to ground in wiring harness between parking brake switch and instrument cluster			X
Short to ground in wiring harness between brake fluid level sensor and front body control module (FBCM)			X
Mechanical malfunction in system				X
Incorrect ABS wheel-speed signal is inputted to DSC HU/CM		X			X	X	X
Difference in size, air pressure or wear conditions between front and rear tires					X	X	X
Malfunction in engine control system (TCS malfunction)					X
Poor installation of SAS control module (yaw rate sensor, low-G sensor)						X	X
DSC HU/CM initial setting has not been performed after replacing DSC HU/CM		X				X	X
Input signal malfunction from instrument cluster (parking brake signal)			X				X
Input signal malfunction from PCM (reverse gear signal)							X
Communication error between DSC HU/CM and front body control module (FBCM)			X				X
Communication error between DSC HU/CM and PCM		X					X	X
Low-G sensor initialization has not been performed after replacing SAS control module		X					X
DSC HU/CM detects a malfunction (input/output device malfunction)		X					X	X
Center point of low-G sensor has deviated		X					X
PCM and/or instrument cluster detects a malfunction		X					X	X
Error input signal from PCM		X					X
Brake (foot brake/parking brake) drag							X
Laser sensor detects a malfunction								X
Vehicle Control Module (V/C-Module) detects a malfunction								X

*1 :DSC system function contains traction control function, TCS/DSC indicator light turns on and off while TCS operates

*2 :TCS/DSC indicator light turns on and off while DSC operates