Key Switch and Key Lock Solenoid Check

CHECK KEY SWITCH AND KEY LOCK SOLENOID INPUT SIGNAL

With CONSULT-II

Check key switch "KEY ON SW" in DATA MONITOR mode with CONSULT-II. Refer to "DATA MONITOR ".

When key is inserted to ignition key cylinder:
KEY ON SW: ON
When key is removed from ignition key cylinder:
KEY ON SW: OFF

Fig 1: CONSULT II DATA MONITOR Screen
Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II

Check voltage between BCM connector M18 terminal 37 and ground.

BCM CONNECTOR AND GROUND VOLTAGE

Connector	Terminals		Condition	Voltage (V) (Approx.)
Connector	( + )	(-)	Condition	Voltage (V) (Approx.)
M18	37	Ground	Key is inserted.	Battery voltage
M18	37	Ground	Key is removed.	0

OK or NG

OK: Key switch and key lock solenoid circuit is OK.

NG: GO TO 2.

Fig 2: Checking Voltage Between BCM Terminal 37 And Ground

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

CHECK KEY SWITCH (INSERT)

KEY SWITCH (INSERT) CONTINUITY

Terminals	Condition	Continuity
1 - 2	Key is inserted.	Yes
1 - 2	Key is removed.	No

OK or NG

OK: Repair or replace harness.

NG: Replace key switch.

Fig 3: Identifying Continuity Between Key Switch And Key Lock Solenoid Terminals 1, 2

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