Infiniti FX35, FX50 (S51). Manual - part 493

OUTSIDE KEY ANTENNA

DLK-95

< DTC/CIRCUIT DIAGNOSIS >

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3.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2

1.

Replace malfunctioning outside key antenna. (New antenna or other antenna)

2.

Connect BCM connector and malfunctioning outside key antenna (New antenna or other antenna) con-
nector.

3.

Check signal between BCM harness connector and ground using an oscilloscope.

Is the inspection result normal?

YES-1 >> Replace malfunctioning front outside handle (LH or RH). Refer to 

DLK-271, "OUTSIDE HANDLE :

Removal and Installation"

.

YES-2 >> Replace outside key antenna (Back door). Refer to 

DLK-283, "BACK DOOR : Removal and Instal-

lation"

.

BCM

Outside key antenna

Continuity 

Connector

Terminal

Connector

Terminal

M122

76

D14 (driver side)

2

Existed

77

1

74

D44 (passenger side)

2

75

1

M121

38

D118 (back door)

2

39

1

BCM

Ground

Continuity 

Connector

Terminal

M122

74

Not existed

75

76

77

M121

38

39

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M122

Driver side

76, 77

Ground

Door request 

switch is 

pushed

When Intelligent Key 
is in the antenna de-
tection area.

Passenger 

side

74, 75

M121

Rear bumper

38, 39

When Intelligent Key 
is not in the antenna 
detection area.

JMKIA0062GB

JMKIA0063GB

DLK-96

< DTC/CIRCUIT DIAGNOSIS >

OUTSIDE KEY ANTENNA

NO

>> Replace BCM. Refer to 

BCS-83, "Removal and Installation"

.

INTELLIGENT KEY WARNING BUZZER

DLK-97

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INTELLIGENT KEY WARNING BUZZER

Description

INFOID:0000000005239592

Answers back and warns for an inappropriate operation.

Component Function Check

INFOID:0000000005239593

1.

CHECK FUNCTION

Check Intelligent Key warning buzzer (“OUTSIDE BUZZER”) in Active Test mode.

Is the inspection result normal?

YES

>> Intelligent Key warning buzzer (engine room) is OK.

NO

>> Refer to 

DLK-97, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005239594

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10 A fuse, [No.6, located in fuse block (J/B)].

Is fuse fusing?

YES

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

NO

>> GO TO 2.

2.

CHECK INTELLIGENT KEY WARNING BUZZER POWER SUPPLY CIRCUIT

1.

Disconnect Intelligent Key warning buzzer connector.

2.

Check voltage between Intelligent Key warning buzzer harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK INTELLIGENT KEY WARNING BUZZER CIRCUIT

1.

Disconnect BCM connector.

2.

Check continuity between BCM harness connector and Intelligent Key warning buzzer harness connector.

3.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK INTELLIGENT KEY WARNING BUZZER

Check 

DLK-98, "Component Inspection"

.

Is the inspection result normal?

(+)

(–)

Voltage (V)

(Approx.)

Intelligent Key warning buzzer

Connector

Terminal

E80

1

Ground

Battery voltage

BCM

Intelligent Key warning buzzer

Continuity 

Connector

Terminal

Connector

Terminal

M121

64

E80

3

Existed

BCM

Ground

Continuity 

Connector

Terminal

M121

64

Not existed

DLK-98

< DTC/CIRCUIT DIAGNOSIS >

INTELLIGENT KEY WARNING BUZZER

YES

>> Replace BCM. Refer to 

BCS-83, "Removal and Installation"

.

NO

>> Replace Intelligent Key warning buzzer. Refer to 

DLK-284, "Removal and Installation"

.

Component Inspection

INFOID:0000000005239595

1.

CHECK INTELLIGENT KEY WARNING BUZZER

Connect battery power supply to Intelligent Key warning buzzer terminals 1 and 3, and check the operation.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace Intelligent Key warning buzzer. Refer to 

DLK-284, "Removal and Installation"

.

1 (BAT+) - 3 (BAT-)

: The buzzer sounds