Infiniti M35/M45 Y50. Manual - part 255

INTELLIGENT KEY SYSTEM

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Take away warning 
does not operate.

Door open to close

1.

Check door switch.

BL-94

2.

Check inside key antenna.

BL-110

3.

Check Intelligent Key warning buzzer.

BL-105

4.

Check warning chime function.

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5.

Check key slot illumination.

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6.

Check combination meter display.

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7.

Replace Intelligent Key unit. 

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Push-button ignition 
switch operation

1.

Check ignition switch position.

BL-115

2.

Check inside key antenna.

BL-110

3.

Check warning chime function.

BL-123

4.

Check key slot illumination.

BL-121

5.

Check combination meter display.

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6.

Replace Intelligent Key unit. 

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Door is open

1.

Check ignition switch position.

BL-115

2.

Check inside key antenna.

BL-110

3.

Check combination meter display.

BL-122

4.

Replace Intelligent Key unit. 

BL-123

Take away through 
window

1.

Check “TAKE OUT FROM WINDOW WARN” setting in 
“WORK SUPPORT”.

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2.

Check inside key antenna.

BL-110

3.

Check warning chime function.

BL-123

4.

Check key slot illumination.

BL-121

5.

Check combination meter display.

BL-122

6.

Replace Intelligent Key unit. 

BL-123

Key warning chime does not operate.

1.

Check key slot.

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2.

Check door switch.

BL-94

3.

Check warning chime function.

BL-123

4.

Check key slot illumination.

BL-121

5.

Check combination meter display.

BL-122

6.

Replace Intelligent Key unit. 

BL-123

Door lock operation warning chime does 
not operate.

1.

Check door switch.

BL-94

2.

Check key slot illumination.

BL-121

3.

Check Intelligent Key warning buzzer.

BL-105

4.

Check inside key antenna.

BL-110

5.

Replace Intelligent Key unit. 

BL-123

Symptom

Diagnosis/service procedure

Reference page

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INTELLIGENT KEY SYSTEM

Check CAN Communication System

NIS001XL

1. 

CHECK SELF-DIAGNOSTIC RESULTS

CAUTION:

If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which performs CAN communication.

 With CONSULT-II

●

Connect CONSULT-II, and turn ignition switch ON.

●

Touch “INTELLIGENT KEY” on “SELECT SYSTEM” screen.

●

Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.

●

Check display content in self-diagnostic results.

OK or NG

NO DTC IS DETECTED>> INSPECTION END
CAN COMM CIRCUIT [U1000]>> After printing “SELF-DIAGNOSIS RESULTS”, go to “CAN SYSTEM”,

Refer to 

LAN-3, "Precautions When Using CONSULT-II"

 .

CONTROL UNIT (CAN) [U1010]>> Replace Intelligent Key unit.

CONSULT-II display item

DTC code

NO DTC IS DETECTED

—

CAN COMM CIRCUIT

U1000

CONTROL UNIT (CAN)

U1010

INTELLIGENT KEY SYSTEM

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Check Power Supply and Ground Circuit

NIS001XM

1. 

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect Intelligent Key unit connector.

3.

Check voltage between Intelligent Key unit harness connector and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace Intelligent Key power supply circuit.

2. 

CHECK GROUND CIRCUIT

Check continuity between Intelligent Key unit harness connector and ground.

OK or NG

OK

>> Power supply and ground circuits are OK.

NG

>> Repair or replace the Intelligent Key unit ground circuit.

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Intelligent Key unit 

connector

Terminal

M32

1

Ground

Battery voltage

M33

41

57

PIIB6251E

Intelligent Key unit connector

Terminal

Ground

Continuity 

M32

20

Yes

40

M33

56

72

PIIB6318E

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INTELLIGENT KEY SYSTEM

Check Key Slot

NIS001XN

1. 

CHECK KEY SLOT INPUT SIGNAL

Check voltage between Intelligent Key unit harness connector and ground.

OK or NG

OK

>> Key slot is OK.

NG

>> GO TO 2.

2. 

CHECK KEY SLOT POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect key slot connector.

3.

Check voltage between slot connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace key slot power supply circuit.

3. 

CHECK KEY SLOT

Check key slot.

OK or NG

OK

>> GO TO 4.

NG

>> Replace key slot.

Terminals

Condition

Voltage (V)

(Approx.)

(+)

(–)

Intelligent Key 
unit connector

Terminal

M32

19

Ground

Intelligent Key inserted

Battery voltage

Intelligent Key removed

0

PIIB6319E

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Key slot connector

Terminal

M14

1

Ground

Battery voltage

PIIB6320E

Terminal

Condition

Continuity

Key slot

1

3

Intelligent Key inserted

Yes

Intelligent Key removed

No

PIIB6321E