Check Key Slot

WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK KEY SLOT INPUT SIGNAL

Check voltage between Intelligent Key unit harness connector and ground.

TERMINAL VOLTAGE CHART

Terminals			Condition	Voltage (V) (Approx.)
(+)		(-)
Intelligent Key unit connector	Terminal	(-)
M32	19	Ground	Intelligent Key inserted	Battery voltage
M32	19	Ground	Intelligent Key removed	0

OK or NG

OK: Key slot is OK.

NG: GO TO 2.

Fig 1: Checking Voltage Between Intelligent Key Unit Harness Connector Terminal 19 And Ground

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

CHECK KEY SLOT POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect key slot connector.

Check voltage between slot connector and ground.

TERMINAL VOLTAGE CHART

Terminals			Voltage (V) (Approx.)
(+)		(-)
Key slot connector	Terminal	(-)
M14	1	Ground	Battery voltage

OK or NG

OK: GO TO 3.

NG: Repair or replace key slot power supply circuit.

Fig 2: Checking Voltage Between Slot Connector Terminal 1 And Ground

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

CHECK KEY SLOT

Check key slot.

TERMINAL CONTINUITY CHART

Terminal		Condition	Continuity
Key slot		Condition	Continuity
1	3	Intelligent Key inserted	Yes
1	3	Intelligent Key removed	No

OK or NG

OK: GO TO 4.

NG: Replace key slot.

Fig 3: Checking Key Slot Connector Terminals

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

CHECK KEY SLOT GROUND CIRCUIT

Check continuity between key slot connector and ground.

TERMINAL CONTINUITY CHART

Key slot connector	Terminal	Ground	Continuity
M14	8	Ground	Yes

OK or NG

OK: GO TO 5.

NG: Repair or replace key slot ground circuit.

Fig 4: Checking Continuity Between Key Slot Connector Terminal 8 And Ground

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

CHECK KEY SWITCH CIRCUIT

Disconnect Intelligent Key unit connector.

Check continuity between Intelligent Key unit connector 7 and key slot connector.

CONTINUITY CHART

A		B		Continuity
Intelligent Key unit connector	Terminal	Key slot connector	Terminal	Continuity
M32	19	M14	2	Yes

Check continuity between Intelligent Key unit connector and ground.

CONTINUITY CHART

A		Ground	Continuity
Intelligent Key unit connector	Terminal
M32	19		No

Fig 5: Checking Continuity Between Intelligent Key Unit Connector Terminals 19 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 slot.