Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION - ".

1. PERFORM INITIALIZATION

   Perform initialization with CONSULT-III. Re-register all mechanical keys.

   For initialization and registration of mechanical key. Refer to CONSULT-III Operation Manual.

   Can the system be initialized and can steering lock be released with re-registered mechanical key? 

   YES: Steering lock solenoid was unregistered.

   NO: GO TO  2

2. CHECK STEERING LOCK SOLENOID POWER SUPPLY-1
   1. Turn ignition switch OFF.
   2. Disconnect steering lock solenoid connector.
   3. Check voltage between steering lock solenoid harness connector and ground.
      TERMINAL VOLTAGE REFERENCE CHART
      
      

      Terminals			Voltage (V) (Approx.)
      (+)		(-)
      Steering lock solenoid connector	Terminal
      M15	1	Ground	Battery voltage

      Fig 1: Checking Voltage Between Steering Lock Solenoid Harness Connector And Ground

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

      Is the inspection result normal? 

      YES: GO TO  3

      NO: Repair or replace harness.

3. CHECK STEERING LOCK SOLENOID GROUND CIRCUIT

   Check continuity between steering lock solenoid harness connector and ground.

   TERMINAL CONTINUITY REFERENCE CHART
   
   

   Terminals			Continuity
   (+)		(-)
   Steering lock solenoid connector	Terminal
   M15	4	Ground	Yes

   Fig 2: Checking Continuity Between Steering Lock Solenoid Harness Connector And Ground

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

   Is the inspection result normal? 

   YES: GO TO  4

   NO: Repair or replace harness.

4. CHECK STEERING LOCK SOLENOID COMMUNICATION CIRCUITS
   1. Disconnect Intelligent Key unit connector.
   2. Check continuity between steering lock solenoid connector (A) M15 terminals 2, 3 and Intelligent Key unit connector (B) M70 terminals 1, 32.
      TERMINAL CONTINUITY REFERENCE CHART
      
      

      Terminals				Continuity
      Steering lock solenoid connector	Terminal	Intelligent Key unit connector	Terminal
      M15	2	M70	1	Yes
      	3		32

   3. Check continuity between steering lock solenoid connector (A) M15 terminals 2, 3 and ground.
      Fig 3: Checking Continuity Between Steering Lock Solenoid Connector And Intelligent Key Unit Connector M70 Terminals

      Courtesy of NISSAN MOTOR CO., U.S.A.
      TERMINAL CONTINUITY REFERENCE CHART
      
      

      Terminals	-	-	Continuity
      Steering lock solenoid connector	Terminals
      M15	2	Ground	No
      	3

      Is the inspection result normal? 

      YES: GO TO  5

      NO: Repair or replace harness.

5. CHECK INTELLIGENT KEY UNIT POWER SUPPLY-2
   1. Connect Intelligent Key unit connector.
   2. Check voltage between Intelligent Key unit harness connector and ground.
      TERMINAL VOLTAGE REFERENCE CHART
      
      

      Terminals			Voltage (V) (Approx.)
      (+)		(-)
      Intelligent Key unit connector	Terminal
      M70	1	Ground	5

      Fig 4: Checking Voltage Between Intelligent Key Unit Harness Connector And Ground

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

      Is the inspection result normal? 

      YES: GO TO  6

      NO: Replace Intelligent Key unit. Refer to "REMOVAL AND INSTALLATION ".

6. CHECK STEERING LOCK SOLENOID COMMUNICATION CIRCUIT
   1. Connect steering lock solenoid connector.
   2. Using an oscilloscope, check voltage between Intelligent Key unit connector and ground.
      Fig 5: Checking Voltage Between Intelligent Key Unit Connector And Ground

      Courtesy of NISSAN MOTOR CO., U.S.A.NISSAN MOTOR CO., U.S.A.NISSAN MOTOR CO., U.S.A.
      TERMINAL VOLTAGE REFERENCE CHART
      
      

      Terminals			Condition		Voltage (V) (Approx.)
      (+)		(-)
      Intelligent Key unit connector	Terminal
      M70	32	Ground	Steering lock	Ignition knob is pushed	Courtesy of NISSAN MOTOR CO., U.S.A.
      				LOCK status	5
      				LOCK <=> UNLOCK	Courtesy of NISSAN MOTOR CO., U.S.A.
      				For 15 seconds after UNLOCK	5
      				15 seconds later UNLOCK	0

      Is the inspection result normal? 

      YES: Replace Steering lock solenoid.

      NO: Replace Intelligent Key unit. Refer to "REMOVAL AND INSTALLATION ".