Nissan X-Trail 32. Manual - part 1850

B27DB S/L IGN OFF

SEC-167

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B27DB S/L IGN OFF

DTC Description

INFOID:0000000010922203

DTC DETECTION LOGIC

POSSIBLE CAUSE

Harness or connectors 
(Steering lock unit power supply circuit is open or shorted)

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Select “Self Diagnosis Result” mode of “BCM” using CONSULT.

Is DTC detected?

YES

>> Refer to 

SEC-167, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010922204

1.

CHECK STEERING LOCK UNIT POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK STEERING LOCK UNIT POWER SUPPLY CIRCUIT

1.

Disconnect IPDM E/R connector and BCM connector.

2.

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

3.

Check continuity between BCM harness connector and ground

Is the inspection result normal?

DTC No.

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B27DB–00

S/L IGN OFF
(Steering lock unit ignition off)

When steering lock unit detects a steering lock unit power circuit discon-
nection.

(+)

(-)

Voltage

BCM

Connector

Terminal

E23

166

Ground

9 - 16 V

IPDM E/R

BCM

Continuity

Connector

Terminal

Connector

Terminal

E10

3

E23

166

Existed

BCM

Ground

Continuity

Connector

Terminal

E23

166

Not existed

SEC-168

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B27DB S/L IGN OFF

YES

>> GO TO 3.

NO

>> Repair or replace harness

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

>> INSPECTION END

B27DC S/L POWER SUPPLY

SEC-169

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B27DC S/L POWER SUPPLY

DTC Description

INFOID:0000000010922205

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors

(Steering lock unit power supply circuit is short to battery)

• BCM

FAIL-SAFE

Inhibit steering lock

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Select “Self Diagnosis Result” mode of “BCM” using CONSULT.

Is DTC detected?

YES

>> Refer to 

SEC-169, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010922206

1.

CHECK STEERING LOCK UNIT POWER SUPPLY

Check voltage between steering lock unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK STEERING LOCK UNIT POWER SUPPLY CIRCUIT (SHORT TO GROUND)

1.

Disconnect BCM connector and steering lock unit connector.

2.

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

3.

Check voltage between BCM harness connector and ground.

DTC No.

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B27DC–00

S/L POWER SUPPLY
(Steering lock unit power 
supply)

When power is supplied to the steering lock unit even though BCM is not supplying 
power to the steering lock unit.

(+)

(-)

Condition

Voltage

Steering lock unit

Connector

Terminal

M57

2

Ground

Steering lock unit

Active

9 - 16 V

Not active

0 - 0.5 V

Steering lock unit

BCM

Continuity

Connector

Terminal

Connector

Terminal

M57

2

M87

41

Existed

BCM

Ground

Continuity

Connector

Terminal

M87

41

Not existed

SEC-170

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B27DC S/L POWER SUPPLY

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK STEERING LOCK UNIT POWER SUPPLY CIRCUIT(SHORT TO BATTERY)

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

REPLACE BCM

Replace BCM. Refer to 

BCS-121, "Removal and Installation"

.

Is DTC detected?

YES

>> INSPECTION END

NO

>> GO TO 5.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

BCM

Ground

Voltage

Connector

Terminal

M87

41

0 V