Check Ignition Knob Switch

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IGNITION KNOB SWITCH

With CONSULT-II

Display "PUSH SW" on DATA MONITOR screen, and check if ON/OFF display is linked to ignition switch operation.

MONITOR ITEM AND CONDITION REFERENCE

Monitor item	Condition
PUSH SW	Ignition switch is pushed: ON
PUSH SW	Ignition switch is withdrawn: OFF

Fig 1: Display CONSULT-II - Data Monitor Screen

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

Without CONSULT-II

Turn ignition switch OFF.
Disconnect Intelligent Key unit connector.

Check voltage between Intelligent Key unit harness connector M75 terminal 27 and ground.

TERMINALS VOLTAGE REFERENCE

Connector	Terminal (Wire color)		Condition	Voltage (V) (Approx.)
Connector	(+)	(-)	Condition	Voltage (V) (Approx.)
M75	27 (OR)	Ground	Ignition switch is pushed	Battery voltage
M75	27 (OR)	Ground	Ignition switch is released	0

Fig 2: Identifying Voltage Between Intelligent Key Unit Harness Connector M75 Terminal 27 And Ground

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

OK or NG

OK: Ignition knob switch is OK.

NG: GO TO 2.

CHECK IGNITION KNOB 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 harness connector M310 terminal 1 and ground.
  1 (Y) - Ground: Battery voltage
OK or NG

OK: GO TO 3.

NG: Repair or replace key switch and ignition knob switch power supply circuit.

Fig 3: Identifying Voltage Between Key Switch And Ignition Knob Switch Harness Connector M310 Terminal 1 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK IGNITION KNOB SWITCH OPERATION

Check continuity between ignition knob switch connector M310 terminal 1 and 2.

TERMINALS CONTINUITY REFERENCE

Connector	Terminal		Condition	Continuity
M310	1	2	Ignition switch is pushed	Yes
M310	1	2	Ignition switch is withdrawn	No

Fig 4: Identifying Continuity Between Ignition Knob Switch Harness Connector M310 Terminal 1 And 2

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

OK or NG

OK: GO TO 4.

NG: Replace key switch and ignition knob switch.

CHECK IGNITION KNOB SWITCH CIRCUIT
1. Check continuity between Intelligent Key unit harness connector M75 terminal 27 and key switch and ignition knob switch harness connector M310 terminal 2.
  27 (OR) - 2 (OR): Continuity should exist .
2. Check continuity between Intelligent Key unit harness connector M75 terminal 27 and ground.
  27 (OR) - Ground: Continuity should not exist .
  
  Fig 5: Identifying Continuity Between Intelligent Key Unit Harness Connector M75 Terminal 27 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: Check the condition of harness and harness connector.

NG: Repair or replace harness between Intelligent Key unit and key switch and ignition knob switch.