Infiniti QX56 (Z62). Manual - part 1169

SEC-66

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2198 NATS ANTENNA AMP.

3.

Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-32, "Removal and Installation"

.

NO

>> Repair or replace harness.

4.

CHECK NATS ANTENNA AMP. OUTPUT SIGNAL 1

1.

Connect NATS antenna amp. connector.

2.

Disconnect BCM connector.

3.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK NATS ANTENNA AMP. OUTPUT SIGNAL CIRCUIT 1

1.

Disconnect NATS antenna amp. connector.

2.

Check continuity between BCM harness connector and NATS antenna amp. connector.

3.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace NATS antenna amp. Refer to 

SEC-155, "Removal and Installation"

.

NO

>> Repair or replace harness.

6.

CHECK NATS ANTENNA AMP. COMMUNICATION SIGNAL 1

1.

Connect BCM connector.

2.

Check voltage between BCM harness connector and ground using analog tester.

Is the inspection result normal?

IPDM E/R

NATS antenna amp.

Continuity

Connector

Terminal

Connector

Terminal

E14

42

M26

1

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E14

42

Not existed

(+)

(–)

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M68

21

Ground

12

BCM

NATS antenna amp.

Continuity

Connector

Terminal

Connector

Terminal

M68

21

M26

2

Existed

BCM

Ground

Continuity

Connector

Terminal

M68

21

Not existed

(+)

(–)

Condition

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M68

21

Ground

Contact Intelligent Key backside to 
push-button ignition switch, then turn 
ignition switch ON.

Just after pressing push-button ignition 
switch, pointer of analog tester should 
move.

B2198 NATS ANTENNA AMP.

SEC-67

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

YES

>> GO TO 7.

NO

>> Replace NATS antenna amp. Refer to 

SEC-155, "Removal and Installation"

.

7.

CHECK NATS ANTENNA AMP. OUTPUT SIGNAL 2

1.

Disconnect BCM connector.

2.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 8.

8.

CHECK NATS ANTENNA AMP. OUTPUT SIGNAL CIRCUIT 2

1.

Disconnect NATS antenna amp. connector.

2.

Check continuity between BCM harness connector and NATS antenna amp. connector.

3.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace NATS antenna amp. Refer to 

SEC-155, "Removal and Installation"

.

NO

>> Repair or replace harness.

9.

CHECK NATS ANTENNA AMP. COMMUNICATION SIGNAL 2

1.

Connect BCM connector.

2.

Check voltage between BCM harness connector and ground using analog tester.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace NATS antenna amp. Refer to 

SEC-155, "Removal and Installation"

.

10.

CHECK NATS ANTENNA AMP. GROUND CIRCUIT

1.

Disconnect NATS antenna amp. connector.

2.

Check continuity between NATS antenna amp. harness connector and ground.

Is the inspection result normal?

(+)

(–)

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M68

25

Ground

12

BCM

NATS antenna amp.

Continuity

Connector

Terminal

Connector

Terminal

M68

25

M26

3

Existed

BCM

Ground

Continuity

Connector

Terminal

M68

25

Not existed

(+)

(–)

Condition

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M68

25

Ground

Contact Intelligent Key backside to 
push-button ignition switch, then turn 
ignition switch ON.

Just after pressing push-button ignition 
switch, pointer of analog tester should 
move.

NATS antenna amp.

Ground

Continuity

Connector

Terminal

M26

4

Existed

SEC-68

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2198 NATS ANTENNA AMP.

YES

>> GO TO 11.

NO

>> Repair or replace harness.

11.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

B2013 STEERING LOCK UNIT

SEC-69

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B2013 STEERING LOCK UNIT

DTC Logic

INFOID:0000000006226218

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Lock the steering.
NOTE:

3.

Press the push-button ignition switch.

4.

Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-69, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006226219

1.

PERFORM INITIALIZATION

Perform initialization of BCM and reregistration of all Intelligent Keys using CONSULT-III.
For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
Does steering lock operate?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE STEERING LOCK UNIT

1.

Replace steering lock unit.

2.

Perform the service procedure for steering lock unit replacement. Refer to CONSULT-III Operation Man-
ual NATS-IVIS/NVIS.

>> INSPECTION END

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B2013

ID DISCORD BCM-S/L

The ID verification results between BCM and 
steering lock unit are NG.

Steering lock unit

To lock the steering

1.

Set the selector lever in the P position.

2.

Turn the power supply position to the OFF position.

3.

Press any door switch.

To unlock the steering

1.

Set the selector lever in the P position.

2.

Press the push-button ignition switch with brake pedal not depressed.