Infiniti FX35, FX50 (S51). Manual — part 485

B2622 INSIDE KEY ANTENNA 2

DLK-63

< DTC/CIRCUIT DIAGNOSIS >

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B2622 INSIDE KEY ANTENNA 2

Description

INFOID:0000000005239530

Detects whether Intelligent Key is inside the vehicle.
Installed in the console.

DTC Logic

INFOID:0000000005239531

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) on “Work Support” in “INTELLIGENT KEY”.

2.

Perform “INTELLIGENT KEY” Self Diagnostic Result.

Is inside key antenna DTC detected?

YES

>> Refer to

DLK-63, "Diagnosis Procedure"

.

NO

>> Inside key antenna (console) is OK.

Diagnosis Procedure

INFOID:0000000005239532

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK INSIDE KEY ANTENNA CIRCUIT

1.

Disconnect BCM and inside key antenna (console) connector.

2.

Check continuity between BCM harness connector and inside key antenna harness connector.

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B2622

INSIDE ANTENNA 2
CIRCUIT

An excessively high or low voltage from inside an-
tenna is sent to BCM.

• Inside key antenna (console)
• Between BCM and Inside key an-

tenna (console)

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M122

Console

72, 73

Ground

Place Intelligent Key inside the
vehicle.

Place Intelligent Key outside the
vehicle.

JMKIA0062GB

JMKIA0063GB

DLK-64

< DTC/CIRCUIT DIAGNOSIS >

B2622 INSIDE KEY ANTENNA 2

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 INSIDE KEY ANTENNA INPUT SIGNAL 2

1.

Replace inside key antenna (console). (New antenna or other antenna)

2.

Connect BCM and inside key antenna (console) connector.

3.

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

Is the inspection result normal?

YES

>> Replace inside key antenna (console). Refer to

DLK-281, "CONSOLE : Removal and Installation"

.

NO

>> Replace BCM. Refer to

BCS-83, "Removal and Installation"

.

4.

CHECK INTERMITTENT INCIDENT

Refer to

GI-36, "Intermittent Incident"

.

>> INSPECTION END

BCM

Inside key antenna (console)

Continuity

Connector

Terminal

Connector

Terminal

M122

72

M146

2

Existed

73

1

BCM

Ground

Continuity

Connector

Terminal

M122

Console

72

Not existed

73

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M122

Console

72, 73

Ground

Place Intelligent Key inside the
vehicle.

Place Intelligent Key outside the
vehicle.

JMKIA0062GB

JMKIA0063GB

B2623 INSIDE KEY ANTENNA 3

DLK-65

< DTC/CIRCUIT DIAGNOSIS >

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D

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L

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DLK

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P

B2623 INSIDE KEY ANTENNA 3

Description

INFOID:0000000005239533

Detects whether Intelligent Key is inside the vehicle.
Installed in the luggage room.

DTC Logic

INFOID:0000000005239534

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) on “Work Support” in “INTELLIGENT KEY”.

2.

Perform “INTELLIGENT KEY” Self Diagnostic Result.

Is inside key antenna DTC detected?

YES

>> Refer to

DLK-65, "Diagnosis Procedure"

.

NO

>> Inside key antenna (luggage room) is OK.

Diagnosis Procedure

INFOID:0000000005239535

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK INSIDE KEY ANTENNA CIRCUIT

1.

Disconnect BCM and inside key antenna (luggage room) connector.

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B2623

INSIDE ANTENNA 3
CIRCUIT

An excessively high or low voltage from inside an-
tenna is sent to BCM.

• Inside key antenna (luggage room)
• Between BCM and Inside key an-

tenna (luggage room)

Terminals

Condition

Signal

(Reference value)

(+)

(–)

BCM connector

Terminal

M121

Luggage room

34, 35

Ground

Place Intelligent Key inside the
vehicle.

Place Intelligent Key outside
the vehicle.

JMKIA0062GB

JMKIA0063GB

DLK-66

< DTC/CIRCUIT DIAGNOSIS >

B2623 INSIDE KEY ANTENNA 3

2.

Check continuity between BCM harness connector and inside key antenna (luggage room) harness con-
nector.

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 INSIDE KEY ANTENNA INPUT SIGNAL 2

1.

Replace inside key antenna (luggage room). (New antenna or other antenna)

2.

Connect BCM and inside key antenna (luggage room) connector.

3.

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

Is the inspection result normal?

YES

>> Replace inside key antenna (luggage room). Refer to

DLK-282, "LUGGAGE ROOM : Removal

and Installation"

.

NO

>> Replace BCM. Refer to

BCS-83, "Removal and Installation"

.

4.

CHECK INTERMITTENT INCIDENT

Refer to

GI-36, "Intermittent Incident"

.

>> INSPECTION END

BCM

Inside key antenna

Continuity

Connector

Terminal

Connector

Terminal

M121

34

B228

2

Existed

35

1

BCM

Ground

Continuity

Connector

Terminal

M121

Luggage room

34

Not existed

35

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M121

Luggage room

34, 35

Ground

Place Intelligent Key inside
the vehicle.

Place Intelligent Key outside
the vehicle.

JMKIA0062GB

JMKIA0063GB