Nissan Murano Z51. Manual - part 1251

B2013 STEERING LOCK UNIT

SEC-51

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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B2013 STEERING LOCK UNIT

Description

INFOID:0000000005515510

BCM performs the ID verification with the steering lock unit and releases the steering lock if both BCM and
steering lock unit ID are same. BCM starts the communication with the steering lock unit when Intelligent Key
is carried into the passenger compartment and the push-button ignition switch is pressed.

DTC Logic

INFOID:0000000005515511

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Lock steering.

2.

Press the push-button ignition switch.

3.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-51, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005515512

1.

PERFORM INITIALIZATION

Perform initialization with CONSULT-III.
For initialization, 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 initialization with CONSULT-III. 
For initialization, refer to “CONSULT-III Operation Manual NATS-IVIS/NVIS”.

Does steering lock operate?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B2013

ID DISCORD, BCM-S/L

The ID verification result between BCM and steering lock 
unit is NG. The registration is necessary.

Steering lock unit

SEC-52

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2014 CHAIN OF STRG-IMMU

B2014 CHAIN OF STRG-IMMU

Description

INFOID:0000000005515513

BCM performs the ID verification with the steering lock unit to release the steering. BCM starts the communi-
cation with the steering lock unit when Intelligent Key is carried into the passenger compartment and the push-
button ignition switch is pressed.

DTC Logic

INFOID:0000000005515514

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Lock steering.

2.

Press the push-button ignition switch.

3.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-52, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005515515

1.

CHECK STEERING LOCK UNIT POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect steering lock unit connector.

3.

Check voltage between steering lock unit harness connector and ground.

Is the inspection normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK STEERING LOCK UNIT POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between steering lock unit harness connector and BCM harness connector.

4.

Check continuity between steering lock unit harness connector and ground.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2014

CHAIN OF S/L-BCM

Inactive communication between steering 
lock unit and BCM

• Harness or connectors

(steering lock unit circuit is open or short-
ed)

• Steering lock unit
• BCM

(+)

(–)

Condition

Voltage (V)

(Approx.)

Steering lock unit

Connector

Terminal

M12

7

Ground

Ignition switch

OFF or ACC

Battery voltage

ON

0

Steering lock unit

BCM

Continuity

Connector

Terminal

Connector

Terminal

M12

7

M122

106

Existed

B2014 CHAIN OF STRG-IMMU

SEC-53

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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Is the inspection normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness or connector.

3.

CHECK STEERING LOCK UNIT GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between steering lock unit and ground.

Is the inspection normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness or connector.

4.

CHECK STEERING LOCK UNIT COMMUNICATION SIGNAL

1.

Connect steering lock unit connector.

2.

Read voltage signal between steering lock unit harness connector and ground.

Is the inspection normal?

YES

>> Replace steering lock unit.

NO

>> GO TO 5.

5.

CHECK STEERING LOCK UNIT COMMUNICATION CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect steering lock unit and BCM connector.

3.

Check continuity between steering lock unit harness connector and BCM harness connector.

Steering lock unit

Ground

Continuity

Connector

Terminal

M12

7

Not existed

Steering lock unit

Ground

Continuity

Connector

Terminal

M12

5

Existed

6

(+)

(–)

Condition

Voltage (V)

(Approx.)

Steering lock unit

Connector

Terminal

M12

2

Ground

Steering lock unit

Lock status

Battery voltage

Lock or unlock

For 15 seconds after 
unlock

Battery voltage

15 seconds or later 
after unlock.

0 

Steering is locked

: Opening the door when ignition switch is ON to OFF.

Steering is unlocked

: Ignition switch is OFF to ACC.

JMKIA0066GB

SEC-54

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2014 CHAIN OF STRG-IMMU

4.

Check continuity between steering lock unit harness connector and ground.

Is the inspection normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness or connector.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

Steering lock unit

BCM

Continuity

Connector

Terminal

Connector

Terminal

M12

2

M122

111

Existed

Steering lock unit

Ground

Continuity

Connector

Terminal

M12

2

Not existed