Nissan X-Trail 32. Manual - part 1975

SRC-68

< DTC/CIRCUIT DIAGNOSIS >

B1406, B1407, B1408, B1409, B1410 AIR BAG DIAGNOSIS SENSOR UNIT

B1406, B1407, B1408, B1409, B1410 AIR BAG DIAGNOSIS SENSOR UNIT

DTC Description

INFOID:0000000010688491

DTC DETECTION LOGIC

POSSIBLE CAUSE

Malfunction in air bag diagnosis sensor unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

 With CONSULT

1.

Turn ignition switch ON.

2.

Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT.

Is malfunctioning part detected?

YES

>> Refer to 

SRC-68, "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:0000000010688492

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait at least 3

minutes or more. (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device. 

1.

CHECK HARNESS CONNECTOR

Check the harness connector for disconnection, looseness or damage.

Is the inspection result normal?

YES

>> GO TO 2.

NO–1 >> Damage: Replace malfunctioning harness and connector.
NO–2 >> Disconnection or looseness: Securely lock the connector.

2.

CHECK WIRING HARNESS

Check the wiring harness externals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace malfunctioning harness and connector.

3.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-38, "Removal and Installation"

.

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B1406–00

CONTROL UNIT 
(airbag control unit internal trouble, Energy 
Reserver)

Air bag diagnosis sensor unit is malfunctioning

B1407–00

CONTROL UNIT 
(airbag control unit internal trouble, driver IC1)

B1408–00

CONTROL UNIT 
(airbag control unit internal trouble, driver IC2)

B1409–00

CONTROL UNIT 
(airbag control unit internal trouble, driver IC3)

B1410–00

CONTROL UNIT 
(airbag control unit internal trouble, Power IC)

B1406, B1407, B1408, B1409, B1410 AIR BAG DIAGNOSIS SENSOR UNIT

SRC-69

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SRC

N

O

P

2.

Perform DTC confirmation procedure. Refer to 

SRC-68, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END

SRC-70

< DTC/CIRCUIT DIAGNOSIS >

B1411, B1412, B1413, B1414, B1415 AIR BAG DIAGNOSIS SENSOR UNIT

B1411, B1412, B1413, B1414, B1415 AIR BAG DIAGNOSIS SENSOR UNIT

DTC Description

INFOID:0000000010688493

DTC DETECTION LOGIC

POSSIBLE CAUSE

Malfunction in air bag diagnosis sensor unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

 With CONSULT

1.

Turn ignition switch ON.

2.

Perform “Self Diagnostic Result” mode of “AIR BAG” using CONSULT.

Is malfunctioning part detected?

YES

>> Refer to 

SRC-70, "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:0000000010688494

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait at least 3

minutes or more. (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device. 

1.

CHECK HARNESS CONNECTOR

Check the harness connector for disconnection, looseness or damage.

Is the inspection result normal?

YES

>> GO TO 2.

NO–1 >> Damage: Replace malfunctioning harness and connector.
NO–2 >> Disconnection or looseness: Securely lock the connector.

2.

CHECK WIRING HARNESS

Check the wiring harness externals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace malfunctioning harness and connector.

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B1411–00

CONTROL UNIT 
(airbag control unit internal trouble, SUB IC)

Air bag diagnosis sensor unit is malfunctioning

B1412–00

CONTROL UNIT 
(airbag control unit internal trouble, communi-
cation IC1)

B1413–00

CONTROL UNIT 
(airbag control unit internal trouble, communi-
cation IC2)

B1414–00

CONTROL UNIT 
[airbag control unit internal trouble, Main mi-
cro controller (CPU)]

B1415–00

CONTROL UNIT 
[airbag control unit internal trouble, Sub mi-
crocontroller (CPU)]

B1411, B1412, B1413, B1414, B1415 AIR BAG DIAGNOSIS SENSOR UNIT

SRC-71

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SRC

N

O

P

3.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-38, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-70, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END