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 switch 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 ".
CHECK GENERATOR "L" CIRCUIT SIGNAL
CONSULT DATA MONITOR
1. Start the engine.
2. Select "ACG L" of AIR LEVELIZER data monitor item.
3. Check the monitor status.
  ACG L
  
  : OFF with charge light OFF
  
  : ON with charge light ON
  
  Is the generator "L" signal operating normally?
  
  YES: GO TO 4.
  
  NO: Check generator L circuit. Refer to "DIAGNOSIS PROCEDURE "(open) and "DIAGNOSIS PROCEDURE "(short).
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: System is operating normally.

NO: Repair or replace the malfunctioning part.