Infiniti FX35 / FX45. Manual - part 211

 

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Infiniti FX35 / FX45. Manual - part 211

 

 

INTELLIGENT KEY SYSTEM

BL-111

< SERVICE INFORMATION >

C

D

E

F

G

H

J

K

L

M

A

B

BL

N

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Check CAN Communication System Inspection

INFOID:0000000001534751

1.

PERFORM SELF DIAGNOSTIC

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result” of BCM.

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

BCS-13, "U1000 CAN Communication Circuit"

.

NO

>> INSPECTION END.

Check Intelligent Key Unit Power Supply and Ground Circuit

INFOID:0000000001327853

1.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition knob OFF position.

2.

Disconnect Intelligent Key unit connector.

3.

Check voltage between Intelligent Key unit connector and
ground.

OK or NG

Door lock non-operation warning does not 
sound.

Intelligent Key warning chime does not sound

1.

Intelligent Key battery inspection

BL-130

2.

Check door request switch

BL-119

3.

Check inside key antenna

BL-123

4.

Check Intelligent Key warning buzzer

BL-120

5.

Replace Intelligent Key unit

BL-130

Ignition knob OFF position warning chime does not sound

1.

Intelligent Key battery inspection

BL-130

2.

Check door request switch

BL-119

3.

Check outside key antenna

BL-121

4.

Check Intelligent Key warning buzzer

BL-120

5.

Check ignition knob switch

BL-114

6.

Replace Intelligent Key unit

BL-130

Door ajar alarm

1.

Check CAN communications

BCS-13

2.

Check door request switch

BL-119

3.

Check outside key antenna

BL-121

4.

Check Intelligent Key warning buzzer

BL-120

5.

Check door switch

BL-115

6.

Intelligent Key battery inspection

BL-130

7.

Replace Intelligent Key unit

BL-130

Symptom

Diagnoses service procedure

Refer to page

Connector

Terminal

(Wire color)

Ignition knob position

M34

(+)

(–)

OFF

ACC

ON

6

(W)

Ground

0V

0V

Battery voltage

10 

(LG)

0V

Battery voltage

Battery voltage

11 

(L/R)

Battery voltage

Battery voltage

Battery voltage

MIIB0360E

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< SERVICE INFORMATION >

INTELLIGENT KEY SYSTEM

OK

>> GO TO 2.

NG

>> Repair or replace Intelligent Key power supply circuit.

2.

CHECK GROUND CIRCUIT

Check continuity between Intelligent Key unit connector M34 termi-
nal 12 (B) and ground.

OK or NG

OK

>> Power supply and ground circuits are normal.

NG

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

Check Key Switch (Intelligent Key Unit Input)

INFOID:0000000001327854

1.

CHECK KEY SWITCH

 With CONSULT-III

Display “KEY SW” on DATA MONITOR screen, and check if ON-OFF display is linked to insertion of mechan-
ical key in ignition knob.

OK or NG

OK

>> Key switch is OK.

NG

>> GO TO 2.

2.

CHECK KEY SWITCH POWER SUPPLY CIRCUIT

1.

Remove mechanical key from ignition knob.

2.

Disconnect key switch and ignition knob switch connector.

3.

Check voltage between key switch and ignition knob switch connector M22 terminal 3 (L/R) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace key switch power supply circuit.

3.

CHECK KEY SWITCH OPERATION

Check continuity between key switch and ignition knob switch terminals 3 and 4.

OK or NG

OK

>> GO TO 4.

NG

>> Replace key switch.

12 (B) - Ground

: Continuity should exist.

MIIB0361E

When key is inserted in ignition knob

: ON

When key is removed in ignition knob

: OFF

3 (L/R) - Ground

: Battery voltage

PIIA6738E

Terminals

Condition

Continuity

3

4

Key is inserted in ignition key cylinder.

Yes

Key is removed from ignition key cylinder. 

No

PIIA6140E

INTELLIGENT KEY SYSTEM

BL-113

< SERVICE INFORMATION >

C

D

E

F

G

H

J

K

L

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A

B

BL

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4.

CHECK KEY SWITCH CIRCUIT

1.

Disconnect Intelligent Key unit connector.

2.

Check continuity between Intelligent Key unit connector M34 terminal 7 (B/W) and key switch and ignition
knob switch connector M22 terminal 4 (B/W).

3.

Check continuity between key switch and ignition knob switch
connector M22 terminal 4 (B/W) and ground.

OK or NG

OK

>> Replace Intelligent key unit.

NG

>> Repair or replace harness between Intelligent Key unit

and key switch and ignition knob switch.

Check Key Switch (BCM Input)

INFOID:0000000001327855

1.

CHECK KEY SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition knob OFF position.

2.

Disconnect key switch and ignition knob switch connector.

3.

Check voltage between key switch and ignition knob switch con-
nector M22 terminal 3 (L/R) and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Check harness between key switch and ignition knob

switch and fuse.

2.

CHECK KEY SWITCH

Check continuity between key switch and ignition knob switch as fol-
lows.

OK or NG

OK

>> GO TO 3.

NG

>> Replace key switch and ignition knob switch.

3.

CHECK KEY SWITCH SIGNAL CIRCUIT

7 (B/W) - 4 (B/W)

: Continuity should exist.

4 (B/W) - Ground

: Continuity should not exist.

PIIA6740E

3 (L/R) – Ground

: Battery voltage.

PIIA5093E

Terminals

Condition

Continuity

3

4

Key is inserted in ignition key cylinder.

Yes

Key is removed from ignition key cylinder. 

No

PIIA6140E

BL-114

< SERVICE INFORMATION >

INTELLIGENT KEY SYSTEM

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 (B/W) and BCM connector M3 termi-
nal 37 (B/W).

3.

Check continuity between key switch and ignition knob switch
connector M22 terminal 4 (B/W) and ground.

OK or NG

OK

>> Key switch (BCM input) circuit is OK.

NG

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

Check Ignition Knob Switch

INFOID:0000000001327856

1.

CHECK IGNITION KNOB SWITCH

 With CONSULT-III

Display “PUSH SW” on “DATA MONITOR” screen, and check if ON/OFF display is linked to ignition knob oper-
ation.

OK or NG

OK

>> Ignition knob switch is OK.

NG

>> GO TO 2.

2.

CHECK IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition knob LOCK position.

2.

Disconnect key switch and ignition knob switch connector.

3.

Check voltage between key switch and ignition knob switch connector M22 terminal 1 (L/R) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace key switch and ignition knob switch

power supply circuit.

3.

CHECK IGNITION KNOB SWITCH OPERATION

Check continuity between key switch and ignition knob switch terminals 1 and 2.

4 (B/W) – 37 (B/W)

: Continuity should exist.

4 (B/W) – Ground

: Continuity should not exist.

PIIA5095E

Press ignition knob.

: ON

Return ignition knob (release hands 
from ignition knob)

: OFF

1 (L/R) - Ground

: Battery voltage

PIIA6741E

 

 

 

 

 

 

 

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