Infiniti M35/M45 Y50. Manual - part 277

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

BL-177

C

D

E

F

G

H

J

K

L

M

A

B

BL

DIAGNOSTIC PROCEDURE

1. 

CHECK POWER SUPPLY CIRCUIT

1.

Start engine.

2.

Check voltage between Intelligent Key unit connector and ground.

OK or NG

OK

>> Check the condition of harness and connector. If it is

OK, check the self-diagnosis results using CONSULT-II
again.

NG

>> Check alternator. Refer to 

Trouble Diagnosis Symptom Chart 1

NIS001Z0

Power supply switching operation cannot be operated with all Intelligent Keys.

CAUTION:

●

Follow Trouble Diagnosis Flowchart referring to “Diagnosis Procedure”. Determine malfunction-
ing condition before performing this diagnosis.

●

Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting
diagnosis.

●

Check systems shown in the “Diagnosis/service procedure” column in this order.

CONDITIONS OF VEHICLE (OPERATING CONDITIONS)

●

Engine start function is ON when setting on CONSULT-II.

●

Use Intelligent Key with registered Intelligent Key ID.

●

One or more of Intelligent Keys with registered Intelligent Key ID is in the passenger room.

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Intelligent Key unit 

connector

Terminal

M32

1

Ground

Battery voltage

M33

41

57

PIIB6252E

Diagnosis/service procedure

Reference page

1. Check push button ignition switch

BL-179

2. Check inside key antenna

BL-181

3. Check remote keyless entry receiver

BL-183

4. Replace Intelligent Key unit.

BL-123

BL-178

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

Trouble Diagnosis Symptom Chart 2

NIS001Z1

When performing the push-button ignition switch operation when the Intelligent Key is carried, there is a time
difference in the power supply position switching (the power supply changes in approximately 3 seconds)

CAUTION:

●

Follow Trouble Diagnosis Flowchart referring to “Diagnosis Procedure”. Determine malfunction-
ing condition before performing this diagnosis.

●

Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting
diagnosis.

●

Check systems shown in the “Diagnosis/service procedure” column in this order.

CONDITIONS OF VEHICLE (OPERATING CONDITIONS)

●

Another Intelligent Key or foreign materials are not inserted in the key slot.

NOTE:
If another Intelligent Key or foreign materials are inserted at push-button ignition switch operation, perform the
immobilizer ID verification first. When the immobilizer ID verification cannot be performed, the system
switches to the Intelligent Key ID verification. Therefore, there is the time difference in the push-button ignition
switch operation.

Trouble Diagnosis Symptom Chart 3

NIS001Z2

When performing the push-button ignition switch operation when the Intelligent Key is inserted into the key
slot, there is the time difference in the power supply position switching (the power supply changes in approxi-
mately 3 seconds)

CAUTION:

●

Follow Trouble Diagnosis Flowchart referring to “Diagnosis Procedure”. Determine malfunction-
ing condition before performing this diagnosis.

●

Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting
diagnosis.

●

Check systems shown in the “Diagnosis/service procedure” column in this order.

CONDITIONS OF VEHICLE (OPERATING CONDITIONS)

●

A device emitting electromagnetic signals such as a portable telephone or a radio is not used around the
key slot.

●

The Intelligent Key is inserted into the key slot until it clicks.

NOTE:
If another Intelligent Key is inserted at push-button ignition switch operation, perform the immobilizer ID verifi-
cation first. When the immobilizer ID verification cannot be performed, the system switches to the Intelligent
Key ID verification. Therefore, there is the time difference in the push-button ignition switch operation.

Diagnosis/service procedure

Reference page

1. Check key switch built in key slot

BL-184

2. Replace Intelligent Key unit.

BL-123

Diagnosis/service procedure

Reference page

1. Check NATS antenna amp. built in key slot

BL-186

2. Replace Intelligent Key unit.

BL-123

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

BL-179

C

D

E

F

G

H

J

K

L

M

A

B

BL

Check CAN Communication System

NIS001Z3

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.

Check Push-Button Ignition Switch

NIS001Z4

1. 

CHECK POWER SUPPYL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect push-button ignition switch connector.

3.

Check voltage between push-button ignition switch connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

CONSULT-II display item

DTC code

NO DTC IS DETECTED

—

CAN COMM CIRCUIT

U1000

CONROL UNIT (CAN)

U1010

Terminals

Voltage (V)

(Approx.)

(+)

(–)

push-button igni-

tion switch

connector

Terminal

M27

4

Ground

Battery voltage

PIIB6256E

BL-180

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION

2. 

CHECK HARNESS CONTINUITY

1.

Disconnect Intelligent Key unit connector.

2.

Check continuity between Intelligent Key unit connector and push-button ignition switch connector.

3.

Check continuity between Intelligent Key unit connector and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK PUSH-BUTTON IGNITION SWITCH 

Check push-button ignition switch.

OK or NG

OK

>> GO TO 4.

NG

>> Replace push-button ignition switch.

4. 

CHECK GROUND CIRCUIT

Check push-button ignition switch connector.

OK or NG

OK

>> Check the condition of harness and connector.

NG

>> Repair or replace harness.

A

B

Continuity 

Intelligent Key 
unit connector

Terminal

push-button igni-

tion switch 

connector

Terminal

M32

39

M27

4

Yes

A

Ground

Continuity 

Intelligent Key unit connector

Terminal

M32

39

No

PIIB6240E

Terminal

Push-button igni-

tion switch condi-

tion

Continuity

Push-button ignition switch

1

4

Pushed

Yes

Released

No

PIIB6241E

Push-button ignition switch con-

nector

Terminal

Ground

Continuity 

M27

1

Yes

PIIB6257E