Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

SUSPENSION CONTROL UNIT POWER AND GROUND INSPECTION
Check the suspension control unit power and ground supply. Refer to "SUSPENSION CONTROL UNIT: DIAGNOSIS PROCEDURE ".

Does the suspension control unit power and ground pass inspection?

YES: GO TO 2.

NO: Repair or replace the malfunctioning part.
CHECK HEIGHT SENSOR SIGNAL INPUT
CONSULT DATA MONITOR
1. Turn ignition ON.
2. Select "HEIGT SEN" of AIR LEVELIZER data monitor item.
3. Check the monitor status.
  HEIGT SEN: 0.2V - 4.8V
  
  Is the height sensor voltage normal?
  
  YES: GO TO 3.
  
  NO: Check height sensor signal circuit. Refer to "DIAGNOSIS PROCEDURE ".
SUSPENSION AIR COMPRESSOR POWER AND GROUND INSPECTION
Check the suspension air compressor power and ground supply. Refer to "SUSPENSION AIR COMPRESSOR: DIAGNOSIS PROCEDURE ".

Does the suspension air compressor power and ground pass inspection?

YES: Inspect for a weak compressor, leak or restriction in the system. Repair or replace malfunctioning part.

NO: Repair or replace the malfunctioning part.