Symptom Troubleshooting

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

SYMPTOM TROUBLESHOOTING REFERENCE

No.	Symptom
1	Any of the following lights are not illuminated with the ignition switched 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)
2	Any of the following lights remain illuminated: 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)
3	Brake system warning light stay on
4	A malfunction in the system even though the 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) are not illuminated
5	ABS or TCS operates frequently
5	TCS does not work correctly
6	DSC operates frequently
6	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
8	Hill launch assist (HLA) does not operate on a slope

x: Applied

SYMPTOM TROUBLESHOOTING REFERENCE

Troubleshooting item	Courtesy of MAZDA MOTORS CORP.	Courtesy of MAZDA MOTORS CORP.	Courtesy of MAZDA MOTORS CORP.	Courtesy of MAZDA MOTORS CORP.	Courtesy of MAZDA MOTORS CORP.	Courtesy of MAZDA MOTORS CORP.	Courtesy of MAZDA MOTORS CORP.	Courtesy of MAZDA MOTORS CORP.
DSC HU/Control Module does not operate	x	x	x
Communication error between DSC HU/Control Module and instrument cluster	x	x	x					x
DSC HU/Control Module internal malfunction	x	x	x
Instrument cluster malfunction	x	x	x
Brake fluid amount is low			x
DSC HU/Control Module detected malfunction (input and output device malfunction)		x	x		x	x		x
DSC HU/Control Module detects low voltage in power supply		x	x
DSC HU/Control Module ground malfunction	x	x	x
No connection at DSC HU/Control Module connector		x	x
Electric parking brake does not release			x					x
Electric 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/Control Module		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/Control Module initial setting has not been performed after replacing DSC HU/Control Module		x				x		x
Input signal malfunction from electric parking brake control module (electric parking brake switch signal)			x					x
Input signal malfunction from PCM (reverse gear signal)								x
Communication error between DSC HU/Control Module and front body control module (FBCM)			x					x
Communication error between DSC HU/Control Module and PCM		x						x
Low-G sensor initialization has not been performed after replacing SAS control module		x					x	x
DSC HU/Control Module 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
DSC system function contains traction control function, TCS/DSC indicator light goes on and off while TCS operates TCS/DSC indicator light goes on and off while DSC operates