Infiniti QX56 (JA60). Manual - part 224

OVERHEAD CONSOLE AREA ANTENNA

DLK-67

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

3. Check continuity between Intelligent Key unit harness connector

(A) M70 terminals 33, 34 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness between Intelligent Key unit and overhead console area antenna.

3.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SINGAL

1. Replace overhead console area antenna. (New antenna or other antenna)

2. Connect Intelligent Key unit connector.

3. Check signal between Intelligent Key unit connector and ground

with oscilloscope.

Is the inspection result normal?

YES

>> Replace overhead console area antenna.

NO

>> Replace Intelligent Key unit. Refer to 

SEC-120, "Removal and Installation"

.

Intelligent Key 
unit connector

Terminals

Overhead console 
area antenna con-

nector

Terminals

Continuity

A: M70

33

B: R210

1

Yes

34

2

Item

Connector

Terminals

Continuity

Intelligent Key 

unit

A: M70

33

Ground

No

34

ALKIA0590ZZ

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M70

Intelligent 

Key unit

33

Ground

Ignition 
switch is 
pushed.

ALKIA0589ZZ

PIIB7441E

DLK-68

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

INTELLIGENT KEY UNIT
INTELLIGENT KEY UNIT : Diagnosis Procedure

INFOID:0000000005146923

Regarding Wiring Diagram information, refer to 

DLK-178, "Wiring Diagram — INTELLIGENT KEY SYSTEM —

"

.

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

M70 terminals 6, 11 and ground.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace Intelligent Key unit power supply circuit.

2.

CHECK GROUND CIRCUIT

Check continuity between Intelligent Key unit harness connector

M70 terminal 12 and ground.

Is the inspection result normal?

YES

>> Power supply and ground circuits are OK.

NO

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

BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000005380580

Regarding Wiring Diagram information, refer to 

BCS-49, "Wiring Diagram"

.

1.

 CHECK FUSES AND FUSIBLE LINK

Check that the following fuses and fusible link are not blown.

Is the fuse blown?

Connector

Terminals

Ignition switch position

M70

(+)

(–)

OFF

ON

6

Ground

0V

Battery voltage

11

Battery voltage

Battery voltage

WIIA1171E

12 - Ground

: Continuity should exist.

WIIA1172E

Terminal No.

Signal name

Fuses and fusible link No.

57

Battery power supply

22 (15A)

70

F (50A)

11

Ignition ACC or ON

4 (10A)

38

Ignition ON or START

59 (10A)

POWER SUPPLY AND GROUND CIRCUIT

DLK-69

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM.

3. Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

BACK DOOR CONTROL UNIT
BACK DOOR CONTROL UNIT : Diagnosis Procedure

INFOID:0000000005146925

Regarding Wiring Diagram information, refer to 

DLK-199, "Wiring Diagram—AUTOMATIC BACK DOOR SYS-

TEM—"

.

1.

BACK DOOR POWER SUPPLY CIRCUIT INSPECTION

1. Turn ignition switch OFF.

2. Disconnect back door control unit connector.

Connector

Terminals 

Power

source

Condition

Voltage (V) (Ap-

prox.)

(+)

(-)

M18

11

Ground

ACC 

power 

supply

Ignition 

switch 

ACC or 

ON

Battery voltage

38

Ground

Ignition 

power 

supply

Ignition 

switch ON 

or START

Battery voltage

M20

57

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

70

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

LIIA2415E

BCM

Ground

Continuity

Connector

Terminal

M20

67

Yes

LIIA0915E

DLK-70

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

POWER SUPPLY AND GROUND CIRCUIT

3. Check voltage between back door control unit connector B55

terminals 3, 7, 10 and ground.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair the back door control unit power supply circuit.

2.

BACK DOOR GROUND CIRCUIT INSPECTION

Check continuity between back door control unit connector B55 ter-

minal 1, 2 and ground.

Is the inspection result normal?

YES

>> Circuit is OK.

NO

>> Repair the harness between the back door control unit

and ground.

Connector

Terminals 

Power

source

Condition

Voltage (V) (Ap-

prox.)

(+)

(-)

B55

3

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

7

Ground

Ignition 

power 

supply

Ignition 

switch ON 

or START

Battery voltage

10

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

ALKIA1604ZZ

BCM

Ground

Continuity

Connector

Terminal

B55

1

Yes

2

Yes

LIIA0801E