Nissan X-Trail 32. Manual - part 1976

SRC-72

< DTC/CIRCUIT DIAGNOSIS >

B1416, B1417, B1418, B1419, B1420 AIR BAG DIAGNOSIS SENSOR UNIT

B1416, B1417, B1418, B1419, B1420 AIR BAG DIAGNOSIS SENSOR UNIT

DTC Description

INFOID:0000000010688495

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-72, "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:0000000010688496

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

B1416–00

CONTROL UNIT
(airbag control unit internal trouble, EE-
PROM)

Air bag diagnosis sensor unit is malfunctioning

B1417–00

CONTROL UNIT
(airbag control unit internal trouble, Algorithm)

B1418–00

CONTROL UNIT
(airbag control unit internal trouble, Configu-
ration)

B1419–00

CONTROL UNIT
(airbag control unit internal trouble, other 
component)

B1420–00

CONTROL UNIT
(airbag control unit internal trouble, other)

B1416, B1417, B1418, B1419, B1420 AIR BAG DIAGNOSIS SENSOR UNIT

SRC-73

< 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-72, "DTC Description"

.

Is DTC detected?

YES

>>  GO TO 1.

NO

>> INSPECTION END

SRC-74

< DTC/CIRCUIT DIAGNOSIS >

B1421 FRONTAL COLLISION DETECTION

B1421 FRONTAL COLLISION DETECTION

DTC Description

INFOID:0000000010688497

DTC DETECTION LOGIC

POSSIBLE CAUSE

—

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-74, "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:0000000010688498

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.

PERFORM COLLISION DIAGNOSIS

Perform collision diagnosis. Refer to 

SR-13, "FOR FRONTAL COLLISION : When SRS is activated in a colli-

sion"

 or 

SR-14, "FOR FRONTAL COLLISION : When SRS is not activated in a collision"

.

>> GO TO 2.

2.

FINAL INSPECTION

Perform “AIR BAG” Self Diagnostic Result.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Perform diagnosis of applicable DTC. Refer to 

SRC-18, "DTC Index"

.

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B1421–00

FRONTAL COLLISION
(Firing Record, Frontal)

 Driver air bag, passenger air bag, seat belt pre-tensioner and lap pre-
tensioner are deployed

B1422 SIDE COLLISION DETECTION

SRC-75

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SRC

N

O

P

B1422 SIDE COLLISION DETECTION

DTC Description

INFOID:0000000010688499

DTC DETECTION LOGIC

POSSIBLE CAUSE

—

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-75, "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:0000000010688500

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.

PERFORM COLLISION DIAGNOSIS

Perform collision diagnosis. Refer to 

SR-15, "FOR SIDE AND ROLLOVER COLLISION : When SRS is acti-

vated in a collision"

 or 

SR-16, "FOR SIDE AND ROLLOVER COLLISION : When SRS is not activated in a col-

lision"

.

>> GO TO 2.

2.

FINAL INSPECTION

Perform “AIR BAG” Self Diagnostic Result.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Perform diagnosis of applicable DTC. Refer to 

SRC-18, "DTC Index"

.

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B1422–00

SIDE COLLISION
(Firing Record, Side)

Side air bag and curtain air bag are deployed