Nissan Qashqai J11. Manual - part 1459

B27D7 S/L PWR RELAY

SEC-135

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B27D7 S/L PWR RELAY

DTC Logic

INFOID:0000000010438867

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/unlock

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.

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

Is DTC detected?

YES

>> Refer to 

SEC-135, "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:0000000010438868

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

DTC detecting condition

B27D7–00

S/L PWR RELAY

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

(+)

(-)

Condition

Voltage

steering lock unit

Connector

Terminal

M46

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

M46

2

Existed

SEC-136

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B27D7 S/L PWR RELAY

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

REPLACE BCM

Replace BCM. 

BCS-135, "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

M46

2

Not existed

B27D8 S/L VEHICLE SPEED MALFUNCTION

SEC-137

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B27D8 S/L VEHICLE SPEED MALFUNCTION

DTC Logic

INFOID:0000000010438869

DTC DETECTION LOGIC

POSSIBLE CAUSE

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

FAIL-SAFE

Inhibit steering lock

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

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

Is DTC detected?

YES

>> Refer to 

SEC-137, "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:0000000010438870

1.

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

Check DTC in “Self Diagnostic Result” mode of “ABS” using CONSULT.

Is the inspection result normal?

YES

>> GO TO 2

NO

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

BRC-54, "DTC Index"

.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

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

Is DTC B27D8 detected again?

YES

>> GO TO 3

NO

>> GO TO 5

3.

REPLACE ABS ACUTUATOR AND ELECTRIC UNIT(CONTROL UNIT)

Replace ABS actuator and electric unit (control unit). Refer to 

BRC-142, "Removal and Installation"

.

Is DTC B27D8 detected again?

YES

>> GO TO 4

NO

>> INSPECTION END

4.

REPLACE STEERING LOCK UNIT

Replace steering lock unit. Refer to 

SEC-81, "STEERING LOCK UNIT : Work Procedure"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 5

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

DTC No.

CONSULT screen items

DTC detecting condition

B27D8–00

S/L VEHICLE SPEED MLFUNCTION

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

SEC-138

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B27D8 S/L VEHICLE SPEED MALFUNCTION

>> INSPECTION END