Key Switch And Key Lock Solenoid Circuit Inspection

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

CHECK KEY SWITCH AND KEY LOCK SOLENOID
Connect the key switch and key lock solenoid connector M64.

With CONSULT-II

With "IGN KEY SW" on the DATA MONITOR, Check ON/OFF operation.

Fig 1: Checking Key Switch & Key Lock Solenoid
Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II

GO TO 2.

OK or NG
1. OK: System is OK.
2. NG: GO TO 2.
CHECK FUSE
Check if any of the following fuses is blown.

Fig 2: Checking Fuse
Courtesy of NISSAN MOTOR CO., U.S.A.

NOTE: Refer to COMPONENT PARTS AND HARNESS CONNECTOR LOCATION .

OK or NG
1. OK: GO TO 3.
2. NG: If fuse is blown, be sure to eliminate cause of problem before installing new fuse. Refer to COMPONENT PARTS AND HARNESS CONNECTOR LOCATION .
KEY SWITCH AND KEY LOCK SOLENOID POWER SUPPLY CIRCUIT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect key switch connector and key lock solenoid connector.
3. Check voltage between key switch and key lock solenoid connector M64 terminal 3 (W) and body ground.
  
  Fig 3: Checking Voltage Between Key Switch & Key Lock Solenoid Connector Terminal 3 & Body Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  3 (W) - Ground: Battery voltage
OK or NG
1. OK: GO TO 4.
2. NG: Check harness between key switch and key lock solenoid and fuse.
CHECK KEY SWITCH
Check continuity between key switch.

Fig 4: Checking Continuity Between Key Switch (1 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 5: Checking Continuity Between Key Switch (2 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: GO TO 5.
2. NG: Replace key switch and key lock solenoid.
CHECK KEY SWITCH SIGNAL
Check voltage between BCM connector body ground.

Fig 6: Checking Voltage Between BCM Connector Body Ground (1 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 7: Checking Voltage Between BCM Connector Body Ground (2 Of 2)
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: System is OK.
2. NG: GO TO 6.
CHECK HARNESS CONTINUITY
1. Disconnect key switch and key lock solenoid connector and BCM connector.
2. Check continuity between key switch and key lock solenoid connector M64 terminal 4 (PU/W) and BCM connector M4 terminal 69 (PU/W).
  4 (PU/W) - 69 (PU/W): Continuity should exist.
3. Check continuity between key switch and key lock solenoid connector M64 terminal 4 (PU/W) and body ground.
  4 (PU/W) - Ground: Continuity should not exist.
  
  Fig 8: Checking Harness Continuity
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: Check the harness and connector.
2. NG: Repair or replace harness between key switch and key lock solenoid and BCM.