Key Switch and Key Lock Solenoid Circuit Inspection

WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

CHECK KEY SWITCH AND KEY LOCK SOLENOID

With CONSULT-II

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

MONITOR ITEM

Monitor item [OPERATION or UNIT]

Contents

IGN KEY SW⁽¹⁾

"ON/OFF"

Key inserted (ON)/key removed (OFF) status judged from the key-in detection switch is displayed.

⁽¹⁾	Refer to CONSULT-II APPLICATION ITEMS .

Fig 1: Displaying "IGN KEY SW" on DATA MONITOR

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

Without CONSULT-II

GO TO 2.

OK or NG

OK : Key switch and key lock solenoid circuit is OK.
NG : GO TO 2.

KEY SWITCH AND KEY LOCK SOLENOID (KEY SWITCH) 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 M28 terminal 3 (Y/R) and ground.
  1. 3 (Y/R) - Ground : Battery voltage.
OK or NG
1. OK : GO TO 3.
2. NG : Check harness between key switch and key lock solenoid and fuse.
Fig 2: Checking Voltage Between Key Switch And Key Lock Solenoid Connector M28 Terminal 3 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK KEY SWITCH AND KEY LOCK SOLENOID (KEY SWITCH)

Check continuity between key switch and key lock solenoid (key switch) as follows.

CONDITION

Connector	Terminals		Condition	Continuity
Connector	(+)	(-)	Condition	Continuity
M28	3	4	Key is inserted in ignition key cylinder.	Yes
M28	3	4	Key is removed from ignition key cylinder.	No

OK or NG

OK : GO TO 4.
NG : Replace key switch and key lock solenoid (key switch).

Fig 3: Checking Continuity Between Key Switch And Key Lock Solenoid (Key Switch) Terminals 3 And 4

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

CHECK HARNESS CONTINUITY
1. Disconnect key switch and key lock solenoid (key switch) connector and BCM connector.
2. Check continuity between key switch and key lock solenoid (key switch) connector M28 terminal 4 (B/R) and BCM connector M37 terminal 62 (B/R).
  1. 4 (B/R) - 62 (B/R) : Continuity should exist.
3. Check continuity between key switch and key lock solenoid (key switch) connector M28 terminal 4 (B/R) and ground.
  1. 4 (B/R) - Ground : Continuity should not exist.
  Fig 4: Checking Continuity Between Key Switch And Key Lock Solenoid (Key Switch) Connector M28 Terminal 4) And BCM Connector M37 Terminal 62, And Between Connector M28 Terminal 4 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK : Key switch and key lock solenoid circuit is OK.
2. NG : Repair or replace harness between key switch and key lock solenoid (key switch) and BCM.