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Check Key Switch Circuit (With Intelligent Key)

CHECK KEY SWITCH POWER SUPPLY CIRCUIT (WITH CONSULT-II)

With CONSULT-II

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

*: Refer to "DATA MONITOR ".

MONITOR ITEM CHART

Monitor item [OPERATION or UNIT]		Contents
IGN KEY SW*	"ON/OFF"	Key inserted (ON)/key removed (OFF) status judged from the key-in detection switch is displayed.

OK or NG

OK : Key switch circuit is OK.

NG : GO TO 2.

Fig 1: CONSULT-II Function Display - DATA MONITOR

G04077737

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

CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect key switch and ignition knob switch connector.
3. Check voltage between key switch and ignition knob switch connector M22 terminal 3 and ground.
  3 (L/R) - Ground : Battery voltage.
OK or NG

OK : GO TO 3.

NG : Check harness between key switch and fuse.

Fig 2: Identifying Voltage Between Key Switch And Ignition Knob Switch Connector M22 Terminal 3 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK KEY SWITCH

Check continuity between key switch and ignition knob switch connector M22 terminal 3 and 4.

TERMINAL CONTINUITY CHART

Connector	Terminal		Condition	Continuity
M22	3	4	Key is inserted in ignition key cylinder.	Yes
M22	3	4	Key is removed from ignition key cylinder.	No

OK or NG

OK : GO TO 4.

NG : Replace key switch and ignition knob switch.

Fig 3: Identifying Continuity Between Key Switch And Ignition Knob Switch Connector M22 Terminal 3 And 4

G04077739

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

CHECK HARNESS CONTINUITY
1. Disconnect key switch and ignition knob switch connector and BCM connector.
2. Check continuity between key switch and ignition knob switch connector M22 terminal 4 and BCM connector M3 terminal 37.
  4 (B/W) - 37 (B/W) : Continuity should exist.
3. Check continuity between key switch and ignition knob switch connector M22 terminal 4 and ground.
  4 (B/W) - Ground : Continuity should not exist.
OK or NG

OK : Key switch circuit is OK.

NG : Repair or replace harness between key switch and ignition knob switch and BCM.

Fig 4: Identifying Continuity Between Key Switch And Ignition Knob Switch Connector M22 Terminal 4 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.