DTC U0428:62 [DYNAMIC STABILITY CONTROL (DSC)]

id0402b2862300

DTC

U0428:62

DSC HU/CM control

DETECTION CONDITION

•  While the vehicle is driven at 20 km/h or more, the DSC HU/CM cannot determine the steering angle neutral position for 2 min or more.

Note

•  Each time the ignition is switched ON, the DSC HU/CM calculates the steering angle neutral position based on the signals from each sensor and each module.

•  If the vehicle is driven as follows just after the engine is started, DTC U0428:62 may be output.

―  Vehicle is accelerated rapidly while being steered right or left

―  Vehicle is driven on abnormal road surface such as banked road

―  Vehicle is driven on continuously curved road such as mountain road

•  If the DTC is a past malfunction during DTC inspection, it does not indicate a vehicle malfunction.

FAIL-SAFE FUNCTION

•  Refer to “Fail-safe Function Malfunction Contents”. (See DTC TABLE [DYNAMIC STABILITY CONTROL (DSC)].)

POSSIBLE CAUSE

•  Vehicle is driven just after engine is started (in this case, vehicle is not malfunctioning)

―  Vehicle is accelerated rapidly while being steered right or left

―  Vehicle is driven on abnormal road surface such as banked road

―  Vehicle is driven on continuously curved road such as mountain road

•  Each sensor, module signal error caused by rough-road driving

•  Poor connection at connectors (female terminal)

SYSTEM WIRING DIAGRAM

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Diagnostic Procedure

Step	Inspection		Action
1	VERIFY WHETHER MALFUNCTION IS PAST OR PRESENT • Switch the ignition ON (engine off or on). • Are the TCS/DSC indicator light and the master warning light^12 illuminated?	Yes	Perform the DTC inspection and go to the applicable DTC inspection. (See DTC INSPECTION [DYNAMIC STABILITY CONTROL (DSC)].) DTC troubleshooting completed, then go to the next step.
1		No	Using the M-MDS, clear the DTC from the DSC HU/CM, then go to the next step. (See CLEARING DTC [DYNAMIC STABILITY CONTROL (DSC)].)
2	VERIFY NO DTC IS PRESENT • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [DYNAMIC STABILITY CONTROL (DSC)].)
2	VERIFY NO DTC IS PRESENT • Are any DTCs present?	No	DTC troubleshooting completed.

*1 :Vehicles with Mazda Radar Cruise Control (MRCC) and/or Smart Brake Support (SBS)

*2 :Vehicles with Smart City Brake Support (SCBS)

DTC	U0428:62		DSC HU/CM control
DETECTION CONDITION		• While the vehicle is driven at 20 km/h or more, the DSC HU/CM cannot determine the steering angle neutral position for 2 min or more. Note • Each time the ignition is switched ON, the DSC HU/CM calculates the steering angle neutral position based on the signals from each sensor and each module. • If the vehicle is driven as follows just after the engine is started, DTC U0428:62 may be output. ― Vehicle is accelerated rapidly while being steered right or left ― Vehicle is driven on abnormal road surface such as banked road ― Vehicle is driven on continuously curved road such as mountain road • If the DTC is a past malfunction during DTC inspection, it does not indicate a vehicle malfunction.
FAIL-SAFE FUNCTION		• Refer to “Fail-safe Function Malfunction Contents”. (See DTC TABLE [DYNAMIC STABILITY CONTROL (DSC)].)
POSSIBLE CAUSE		• Vehicle is driven just after engine is started (in this case, vehicle is not malfunctioning) ― Vehicle is accelerated rapidly while being steered right or left ― Vehicle is driven on abnormal road surface such as banked road ― Vehicle is driven on continuously curved road such as mountain road • Each sensor, module signal error caused by rough-road driving • Poor connection at connectors (female terminal)
SYSTEM WIRING DIAGRAM		—