DTC C0051:62/C0051:64/C0051:67/C0051:85 [DYNAMIC STABILITY CONTROL (DSC)]

id0402b2906200

DTC

C0051:62, C0051:64, C0051:67, C0051:85

Steering angle sensor

DETECTION CONDITION

•  C0051:62

―  The difference between the steering angle calculated by each sensor and the steering angle from the steering angle sensor is the specification or more when the vehicle is driven in a straight line.

•  C0051:64

―  The difference between the steering angle calculated by each sensor and the steering angle from the steering angle sensor exceeds the specification.

•  C0051:67

―  The neutral position of the steering angle cannot be estimated from the signals from the ABS wheel-speed sensors and the SAS control module.

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 C0051:67 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.

•  C0051:85

―  The steering angle sensor detects signal modulation or steering angle that exceeds specification.

FAIL-SAFE FUNCTION

•  C0051:62, C0051:64, C0051:85

―  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, 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.

•  C0051:67

―  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.

―  Inhibits the TCS, DSC, 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.

POSSIBLE CAUSE

•  C0051:62, C0051:64, C0051:67, C0051:85

―  Improper installation or positioning of the steering angle sensor

―  Steering angle sensor malfunction

―  Connector or terminal malfunction

―  DSC HU/CM malfunction

•  C0051:67

―  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

SYSTEM WIRING DIAGRAM

Not applicable

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 Smart Brake Support/Smart City Brake Support (SBS/SCBS) indicator light (amber)^* illuminated?	Yes	Perform DTC inspection and go to the applicable DTC troubleshooting procedure. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) After completing the applicable DTC troubleshooting, go to the next step.
1		No	Clear the DTC from the memory and go to the Step 3. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
2	PERFORM EPS CM DTC INSPECTION • Perform the EPS CM DTC inspection. (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)
2		No	Go to the next step.
3	VERIFY THAT THE SAME DTC IS NOT PRESENT • Clear the DTCs from the memory. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) • Start the engine and drive the vehicle at 20 km/h {12 mph} or more. • Are the same DTCs present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the DSC HU/CM, then go to the next step. (See DSC HU/CM REMOVAL/INSTALLATION.)
3		No	Go to the next step.
4	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)].)
4		No	DTC troubleshooting completed.

* :Vehicles with Smart Brake Support (SBS) or Smart City Brake Support (SCBS)

DTC	C0051:62, C0051:64, C0051:67, C0051:85		Steering angle sensor
DETECTION CONDITION		• C0051:62 ― The difference between the steering angle calculated by each sensor and the steering angle from the steering angle sensor is the specification or more when the vehicle is driven in a straight line. • C0051:64 ― The difference between the steering angle calculated by each sensor and the steering angle from the steering angle sensor exceeds the specification. • C0051:67 ― The neutral position of the steering angle cannot be estimated from the signals from the ABS wheel-speed sensors and the SAS control module. 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 C0051:67 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. • C0051:85 ― The steering angle sensor detects signal modulation or steering angle that exceeds specification.
FAIL-SAFE FUNCTION		• C0051:62, C0051:64, C0051:85 ― 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, 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. • C0051:67 ― 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. ― Inhibits the TCS, DSC, 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.
POSSIBLE CAUSE		• C0051:62, C0051:64, C0051:67, C0051:85 ― Improper installation or positioning of the steering angle sensor ― Steering angle sensor malfunction ― Connector or terminal malfunction ― DSC HU/CM malfunction • C0051:67 ― 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
SYSTEM WIRING DIAGRAM		Not applicable