Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

1. PERFORM SUSPENSION CONTROL SYSTEM SELF-DIAGNOSIS 

   CONSULT

   1. Turn ignition ON.
   2. Perform SELF DIAGNOSIS function of AIR LEVELIZER system.

      Are any DTC's present? 

      YES: Refer to "DTC INDEX ".

      NO:

      • If warning lamp is always ON, GO TO 2.
      • If warning lamp is always OFF, GO TO  3.
2. CHECK SUSPENSION CONTROL UNIT WARNING LAMP CONTROL 
   1. Turn ignition OFF.
   2. Disconnect the suspension control unit connector B3.
   3. Turn ignition ON.

      Does the CK SUSP. warning lamp turn ON? 

      YES: GO TO 3.

      NO: Replace the suspension control unit. Refer to "REMOVAL AND INSTALLATION ".

3. CHECK CONTINUITY OF WARNING LAMP CONTROL CIRCUIT 
   1. Turn ignition switch OFF.
   2. Disconnect suspension control unit connector B3 and combination meter connector M24.
   3. Check continuity between suspension control unit connector B3 (A) terminal 10 and combination meter connector M24 (B) terminal 3.

      A		B		Continuity
      Connector	Terminal	Connector	Terminal
      B3	10	M24	3	Yes

      Fig 1: Checking Continuity Between Suspension Control Unit Connector B3 Terminal 10 And Combination Meter Connector M24 Terminal 3

      Courtesy of NISSAN NORTH AMERICA, INC.
   4. Check continuity between suspension control unit connector B3 (A) terminal 10 and ground.

      A		-	Continuity
      Connector	Terminal
      B3	10	Ground	No

      Are the continuity test results as specified? 

      YES: Replace the combination meter. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair harness or connector.