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 do not illuminate with the ignition to ON:
•  ABS warning light
•  Brake system warning light
•  TCS/DSC indicator light
•  TCS OFF indicator light (without Off-Road Traction Assist)/Off-Road Traction Assist indicator light (with Off-Road Traction Assist) light
2
Any of the following lights stay on:
•  ABS warning light
•  TCS/DSC indicator light
•  TCS OFF indicator light (without Off-Road Traction Assist)/Off-Road Traction Assist indicator light (with Off-Road Traction Assist) light
3
Brake system warning light stay on
4
There is a malfunction in the system even though ABS warning light, brake system warning light, TCS/DSC indicator light and TCS OFF indicator light (without Off-Road Traction Assist)/Off-Road Traction Assist indicator light (with Off-Road Traction Assist) light do not illuminate
5
ABS or TCS*1 operates frequently
TCS does not work correctly
6
DSC*2 operates frequently
DSC does not work correctly
7
TCS/DSC indicator light flashes (when neither the TCS nor the DSC are operating)
8
Hill launch assist (HLA) operates even on a downhill
Hill launch assist (HLA) does not operate on a slope

X: Applied

Troubleshooting item

1

2

3

4

5

6

7

8
DSC HU/CM does not operate
X
X
X
 
 
 
 
 
Communication error between DSC HU/CM and instrument cluster
X
X
X
 
 
 
 
 
DSC HU/CM internal malfunction
X
X
X
 
 
 
 
 
Instrument cluster malfunction
X
X
X
 
 
 
 
 
Brake fluid amount is low
 
 
X
 
 
 
 
 
DSC HU/CM detected malfunction (input and output device malfunction)
 
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 brake fluid level sensor and front body control module (FBCM)
 
 
X
 
 
 
 
 
There is a mechanical malfunction in system
 
 
 
X
 
 
 
 
Incorrect ABS wheel-speed signal is inputted to DSC HU/CM
 
X
 
 
X
X
 
X
There is a difference in size, air pressure or wear conditions between front and rear tires
 
 
 
 
X
X
 
X
There is a malfunction in engine control system (TCS malfunction)
 
 
 
 
X
 
 
 
Poor installation with 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
Low-G sensor initialization has not been performed after replacing SAS control module
 
X
 
 
 
 
X
X
DSC HU/CM detects a malfunction (input/output device malfunction)
 
X
 
 
 
 
 
X
Center point of low-G sensor has deviated
 
X
 
 
 
 
 
X
PCM and/or instrument cluster detect a malfunction
 
X
 
 
 
 
 
X
Error input signal from PCM
 
X
 
 
 
 
 
X
Brake (foot brake/parking brake) drag
 
 
 
 
 
 
 
X
Laser sensor detect a malfunction
 
 
 
 
 
 
 
 

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