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.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - WITH INTELLIGENT KEY SYSTEM ".

BACK DOOR HANDLE SWITCH SIGNAL INSPECTION
With all doors unlocked, check the back door handle operation by lifting the handle.

Did the back door respond correctly by opening?

YES: GO TO 2

NO: Refer to "DIAGNOSIS PROCEDURE ".
KEYFOB SIGNAL INSPECTION
Check keyfob operation using lock and unlock buttons.

Did the keyfob operate correctly?

YES: GO TO 3

NO: Refer to "DIAGNOSIS PROCEDURE ".
INTELLIGENT KEY UNIT SIGNAL INSPECTION
NOTE: Since the diode is a uni-directional component, pay close attention to the polarity of the ohmmeter being used as the presence of a diode in the circuit will affect the result.
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit, back door handle switch and back door control unit connectors.
3. Check continuity between Intelligent Key unit connector (A) M70 terminal 29 and back door handle switch connector (B) D706 terminal 1.
  29 (+) - 1 (-): Continuity should exist.
4. Check continuity between Intelligent Key unit connector (A) M70 terminal 29 and ground.
  29 (+) - Ground (-): Continuity should not exist.
  
  Fig 1: Checking Intelligent Key Unit Signal Continuity
  Courtesy of NISSAN NORTH AMERICA, INC.
  
  Is the inspection result normal?
  
  YES: Replace the Intelligent Key unit.
  
  NO: Repair or replace the harness or the diode as necessary.