Height Sensor System Inspection

INSPECTION PROCEDURE

1. SELF-DIAGNOSIS RESULT CHECK 

   Check self-diagnosis results.

   HEIGHT SENSOR SYSTEM - SELF-DIAGNOSIS RESULTS
   
   

   Self-diagnosis results
   C1801
   C1806
   C1807

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

   1. YES: GO TO 3
   2. NO: GO TO 2.
2. DATA MONITOR CHECK 

   Conduct data monitor of "HEIGHT SEN" to check if the status is normal.

   HEIGHT SEN SPECIFICATION
   
   

   HEIGHT SEN

   0.2V - 4.8V

   OK or NG 

   1. OK: Inspection End.
   2. NG: GO TO 3.
3. CONNECTOR INSPECTION 
   1. Disconnect suspension control unit connector B3 and height sensor C8.
   2. Check the terminals for deformation, disconnection, looseness or damage.

   OK or NG 

   1. OK: GO TO 4.
   2. NG: Repair or replace as necessary.
4. CHECK HEIGHT SENSOR POWER AND GROUND 
   1. Reconnect the suspension control unit connector.
   2. Turn the ignition switch ON.
   3. Check voltage between height sensor connector C8 terminal 1 (R) and ground.
      1. Voltage: Approx. 5V 
      Fig 1: Checking Voltage Between Height Sensor Connector C8 Terminal 1 (R) And Ground

      Courtesy of NISSAN MOTOR CO., U.S.A.
   4. Check resistance between height sensor connector C8 terminal 3 (L) and ground.
   1. Continuity should exist. 

   OK or NG 

   1. OK: GO TO 5.
   2. NG: Repair the circuit.
   Fig 2: Checking Resistance Between Height Sensor Connector C8 Terminal 3 (L) And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
5. CHECK HEIGHT SENSOR SIGNAL CIRCUIT 
   1. Check resistance between height sensor connector C8 terminal 2 (W) and suspension control unit connector B3 terminal 3 (W).
      1. Continuity should exist. 
      Fig 3: Checking Resistance Between Height Sensor Connector C8 Terminal 2 And Suspension Control Unit Connector B3 Terminal 3

      Courtesy of NISSAN MOTOR CO., U.S.A.
   2. Check resistance between height sensor connector C8 terminal 2 (W) and ground.
      1. Continuity should not exist. 

   OK or NG 

   1. OK: Replace the height sensor. Refer to "HEIGHT SENSOR ".
   2. NG: Repair the circuit.
   Fig 4: Checking Resistance Between Height Sensor Connector C8 Terminal 2 (W) And Ground

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