Steering Angle Sensor System Inspection

INSPECTION PROCEDURE

1. SELF-DIAGNOSIS RESULT CHECK 

   Check self-diagnosis results.

   SELF-DIAGNOSIS RESULT
   
   

   Self-diagnosis results
   ST ANGLE SEN CIRCUIT
   ST ANGLE SEN SIGNAL
   ST ANG SEN COM CIR

   Is the above displayed in the self-diagnosis display items? 

   YES: GO TO  3.

   NO: GO TO 2.

2. DATA MONITOR CHECK 

   Conduct "Data Monitor" of the "STR ANGLE SIG" to check if the status is normal.

   STEERING CONDITION CHART
   
   

   Steering condition	Data monitor
   Straight-ahead	-5deg - +5deg
   Turn wheel 90° to the right.	Approx. +90°
   Turn wheel 90° to the left.	Approx. -90°

   OK or NG 

   OK: Inspection End.

   NG: GO TO 3.

3. CONNECTOR INSPECTION 
   1. Disconnect the ABS actuator and electric unit (control unit) connector E125 and steering angle sensor M47.
   2. Check the terminals for deformation, disconnection, looseness or damage.

   OK or NG 

   OK: GO TO 4.

   NG: Repair or replace as necessary.

4. CHECKING STEERING ANGLE SENSOR POWER AND GROUND 
   1. Turn the ignition switch ON.
   2. Check voltage between steering angle sensor connector M47 and ground.
      VOLTAGE REFERENCE CHART
      
      

      Terminals			Measured value (Approx.)
      (+)		(-)
      Steering angle sensor connector	Terminal
      M47	1	Ground	12V
      	3		12V

      Fig 1: Identifying Voltage Between Steering Angle Sensor Connector And Ground

      Courtesy of NISSAN MOTOR CO., U.S.A.
   3. Turn ignition switch OFF.
   4. Check resistance between steering angle sensor connector M47 and ground.
      RESISTANCE REFERENCE CHART
      
      

      Terminals			Measured value Ω (Approx.)
      (+)		(-)
      Steering angle sensor connector	Terminal
      M47	2	Ground	0Ω

      Fig 2: Identifying Resistance Between Steering Angle Sensor Connector And Ground

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

   OK or NG 

   OK: Check the CAN communication system. Refer to "CAN COMMUNICATION SYSTEM INSPECTION ". If the CAN communication system is OK, replace spiral cable (steering angle sensor) and adjust neutral position of steering angle sensor. Refer to "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION ".

   NG: Repair the circuit.