Judgment Self-Diagnosis Code

When a malfunction is detected, the malfunction route is indicated by flickering of the RAS warning lamp.

Fig 1: RAS Warning Lamp Blinking Pattern

Courtesy of NISSAN MOTOR CO., U.S.A.

NOTE: When the RAS warning lamp flashes 4 Hz and continues repeating it, the system is normal.

FLICKERING PATTERN REFERENCE

Flickering pattern	Display items	Malfunction detected condition	Check item
11	RAS control unit	Malfunction has occurred inside RAS control unit.	C1900, C1901, C1906, C1907, C1927 RAS CONTROL UNIT , C1905, C1908, C1922, C1925, C1928 RAS CONTROL UNIT or C1909 RAS CONTROL UNIT
12	Motor power supply	Battery voltage circuit malfunction of RAS motor	C1911, C1912 RAS MOTOR POWER SUPPLY
13	Motor output	When the RAS motor current value is 10 A or more, actual output is excessively low and the condition continues for some time.	C1902, C1903, C1904, C1910, C1913 RAS MOTOR OUTPUT
21	Vehicle speed signal	Malfunction is detected in vehicle speed signal that is output from ABS actuator and electric unit (control unit) via CAN communication. Improper signal is input vehicle speed.	C1919 VEHICLE SPEED SIGNAL
22	Steering angle sensor signal	Malfunction is detected in steering angle sensor signal that is output from steering angle sensor via CAN communication. Improper signal is input steering angle sensor.	C1920 STEERING ANGLE SENSOR , C1923 STEERING ANGLE SENSOR , C1924 STEERING ANGLE SENSOR or C1926 STEERING ANGLE SENSOR
24	Rear wheel steering angle (main)	The rear wheel steering angle sensor (main) output signal is malfunctioning. The rear wheel steering angle sensor (main) power supply value is malfunction. The output signal value differs between rear wheel steering angle sensor (main) and (sub).	C1914 REAR WHEEL STEERING ANGLE SENSOR , C1915, C1916 REAR WHEEL STEERING ANGLE SENSOR or C1917, C1918 REAR WHEEL STEERING ANGLE SENSOR
25	Rear wheel steering angle (sub)	The rear wheel steering angle sensor (sub) output signal is malfunctioning. The rear wheel steering angle sensor (sub) power supply value is malfunction. The output signal value differs between rear wheel steering angle sensor (main) and (sub).	C1914 REAR WHEEL STEERING ANGLE SENSOR , C1915, C1916 REAR WHEEL STEERING ANGLE SENSOR or C1917, C1918 REAR WHEEL STEERING ANGLE SENSOR
26	VDC	Malfunction is detected in VDC malfunction signal that is output from ABS actuator and electric unit (control unit) via CAN communication. ABS actuator and electric unit (control unit) outputs the malfunction signal. Improper signal is input VDC malfunction signal.	C1929 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
33	Engine speed signal	Malfunction is detected in engine speed signal that is output from ECM via CAN communication. Improper signal is input engine speed.	C1921 ENGINE SPEED SIGNAL
No flickering	Stop lamp switch	Stop lamp switch circuit is shorted or open.	STOP LAMP SWITCH