DTC C0044:28/C0044:47/C0044:49/C0044:51/C0044:54/C0044:64/C0044:8F [DYNAMIC STABILITY CONTROL (DSC)]

id0402b2893500

DTC
C0044:28, C0044:47, C0044:49, C0044:51, C0044:54, C0044:64, C0044:8F
Brake fluid pressure sensor
DETECTION CONDITION
•  C0044:28, C0044:64
―  The pressure from the brake fluid pressure sensor is not within specification.
•  C0044:47, C0044:49
―  The voltage value from the brake fluid pressure sensor is not within specification.
•  C0044:51, C0044:8F
―  The DSC HU/CM detects the internal brake fluid pressure sensor circuit malfunction.
•  C0044:54
―   The brake fluid pressure sensor detects the initialization procedure has not been perform.
FAIL-SAFE FUNCTION
•  C0044:28, C0044:47, C0044:49, C0044:51
―  Illuminates the TCS/DSC indicator light, Mazda Radar Cruise Control (MRCC) warning light*1*2, and Smart Brake Support/Smart City Brake Support (SBS/SCBS) indicator light (amber)*1*2.
―  Tire pressure monitoring system warning light*1 illuminates after flashes. (Not illuminated/flashed depending on malfunction content.)
―  Inhibits the TCS*3, DSC*3, brake assist control, vehicle roll prevention function*1*3, Hill Launch Assist (HLA)*3, TPMS*1*3, Secondary Collision Reduction (SCR)*1*3, Mazda Radar Cruise Control (MRCC)*1*3, Smart Brake Support (SBS)*1*3, and Smart City Brake Support (SCBS)*1*3 controls.
•  C0044:54
―  Illuminates the TCS/DSC indicator light, Mazda Radar Cruise Control (MRCC) warning light*1, and Smart Brake Support/Smart City Brake Support (SBS/SCBS) indicator light (amber)*1.
―  Tire pressure monitoring system warning light*1 illuminates after flashes. (Not illuminated/flashed depending on malfunction content.)
―  Inhibits the TCS, DSC, brake assist control, vehicle roll prevention function*1, Hill Launch Assist (HLA), TPMS*1*3, Secondary Collision Reduction (SCR)*1, Mazda Radar Cruise Control (MRCC)*1, Smart Brake Support (SBS)*1, and Smart City Brake Support (SCBS)*1 controls.
•  C0044:64, C0044:8F
―  Illuminates the TCS/DSC indicator light, Mazda Radar Cruise Control (MRCC) warning light*1, and Smart Brake Support/Smart City Brake Support (SBS/SCBS) indicator light (amber)*1.
―  Tire pressure monitoring system warning light*1 illuminates after flashes.
―  Inhibits the TCS, DSC, brake assist control, vehicle roll prevention function*1, Hill Launch Assist (HLA), TPMS*1, Secondary Collision Reduction (SCR)*1, Mazda Radar Cruise Control (MRCC)*1, Smart Brake Support (SBS)*1, and Smart City Brake Support (SCBS)*1 controls.
*1: If equipped.
*2: Not illuminated depending on malfunction content.
*3: Enabled depending on malfunction content.
POSSIBLE CAUSE
•  The initialization procedure for the brake fluid pressure sensor has not been performed.
•  Brake fluid pressure sensor malfunction
•  Open or short circuit in the brake fluid pressure sensor circuit in DSC HU/CM
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic procedure

STEP

INSPECTION

ACTION
1
PERFORM BRAKE FLUID PRESSURE SENSOR INITIALIZATION PROCEDURE
•  Perform the brake fluid pressure sensor initialization procedure using the M-MDS.
•  Is the brake fluid pressure sensor initialization procedure completed normally?
Yes
Go to the next step.
No
Replace the DSC HU/CM, then go to the next step.
(See DSC HU/CM REMOVAL/INSTALLATION.)
2
VERIFY NO ABNORMALITY ON BRAKE FLUID PRESSURE SENSOR
•  Clear the DTCs from the memory.
•  Start the engine and drive the vehicle at 10 km/h {6.2 mph} or more.
•  Are the same DTCs present?
Yes
Replace the DSC HU/CM, then go to the next step.
(See DSC HU/CM REMOVAL/INSTALLATION.)
No
Go to the next step.
3
VERIFY THAT NO OTHER DTCS ARE PRESENT
•  Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
No
DTC troubleshooting completed.