Nissan X-Trail 32. Manual - part 1848

B27D6 S/L CAN COMM CIRCUIT

SEC-159

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

3.

REPLACE STEERING LOCK UNIT

1.

Replace steering lock unit.

2.

Perform the service procedure for steering lock unit replacement. Refer to 

SEC-101, "STEERING LOCK

UNIT : Work Procedure"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 4.

4.

REPLACE BCM

Replace BCM. Refer to 

BCS-121, "Removal and Installation"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 5.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

Steering lock unit

Ground

Continuity

Connector

Terminal

M57

2

Not existed

SEC-160

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B27D7 S/L PWR RELAY

B27D7 S/L PWR RELAY

DTC Description

INFOID:0000000010922195

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors

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

• BCM

FAIL-SAFE

Inhibit steering lock

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Press push-button ignition switch under the following conditions.

-

Selector lever: In the P position.

-

Brake pedal: Not depressed.

2.

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

Is DTC detected?

YES

>> Refer to 

SEC-160, "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:0000000010922196

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 4.

NO

>> GO TO 2.

2.

CHECK STEERING LOCK UNIT POWER SUPPLY CIRCUIT

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 steering lock unit harness connector and ground.

DTC No.

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B27D7–00

S/L PWR RELAY
(Steering lock unit power relay)

When even if the BCM performs ON output of the internal transistor, the tran-
sistor does not on.

(+)

(-)

Condition

Voltage

Steering lock unit

Connector

Terminal

M57

2

Ground

steering lock unit

Active

9 - 16 V

Not active

0 - 0.5 V

BCM

Steering lock unit

Continuity

Connector

Terminal

Connector

Terminal

M87

41

M57

2

Existed

B27D7 S/L PWR RELAY

SEC-161

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

REPLACE BCM

Replace BCM. 

BCS-121, "Removal and Installation"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 4.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

Steering lock unit

Ground

Continuity

Connector

Terminal

M57

2

Not existed

SEC-162

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B27D8 S/L VEHICLE SPEED MALFUNCTION

B27D8 S/L VEHICLE SPEED MALFUNCTION

DTC Description

INFOID:0000000010922197

DTC DETECTION LOGIC

POSSIBLE CAUSE

• ABS actuator and electric unit (control unit)
• Steering lock unit

FAIL-SAFE

Inhibit steering lock

DTC CONFIRMATION PROCEDURE

1.

CHECK DTC PRIORITY

If DTC B27D8-00 is displayed with DTC U1000-00 or U1010-00, first perform the trouble diagnosis for DTC
U1000-00 or U1010-00.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. U1000-00: Refer to 

BCS-110, "DTC Description"

. U1010-00:

Refer to 

BCS-111, "DTC Description"

.

NO

>> GO TO 2.

2.

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-162, "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:0000000010922198

1.

CHECK DTC PRIORITY

If DTC B261F-00 is displayed with DTC U1000-00 or U1010-00, first perform the trouble diagnosis for DTC
U1000-00 or U1010-00.

Is applicable DTC detected?

YES

>> Perform diagnosis of applicable. U1000-00: Refer to 

BCS-110, "DTC Description"

. U1010-00:

Refer to 

BCS-111, "DTC Description"

.

NO

>> GO TO 2.

2.

CHECK DTC OF “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”

Select “Self Diagnostic Result” mode of “ABS” using CONSULT.

Is DTC detected?

YES

>> GO TO 3.

NO

>> Perform the trouble diagnosis related to the detected DTC. Refer to 

BRC-84, "DTC Index"

.

3.

CHECK SELF DIAGNOSTIC RESULT

1.

Turn ignition switch ON.

2.

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

Is DTC B27D8 detected again?

YES

>> GO TO 4.

DTC No.

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B27D8–00

S/L VEHICLE SPEED MLFUNCTION
(Steering lock unit vehicle speed malfunc-
tion)

When vehicle speed is detected during steering lock unit lock operation 
or unlock operation.