Nissan Quest E52. Instruction — part 1141

B1086 SEAT BELT PRE-TENSIONER LH

SRC-93

< DTC/CIRCUIT DIAGNOSIS >

C

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SRC

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B1086 SEAT BELT PRE-TENSIONER LH

DTC Logic

INFOID:0000000009649913

DTC DETECTION LOGIC

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.

Without CONSULT

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status. Refer to

SRC-15, "On Board Diagnosis Function"

.

NOTE:
SRS does not enter the diagnosis mode if no malfunction is detected in the user mode.

Is malfunctioning part detected?

YES

>> Refer to

SRC-93, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009649914

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.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace harness connector.

2.

CHECK WIRING HARNESS

Check the wiring harness externals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace wiring harness.

3.

REPLACE SEAT BELT PRE-TENSIONER

1.

Replace seat belt pre-tensioner LH. Refer to

SR-31, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to

SRC-93, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 4.

NO

>> INSPECTION END

4.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to

SR-29, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to

SRC-93, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1.

DTC

Display contents of

CONSULT

DTC detecting condition

Possible cause

B1086

PRE-TEN FRONT LH
[OPEN]

Seat belt pre-tensioner LH circuit is open

• Disconnection of wiring harness and open
• Malfunction in seat belt pre-tensioner LH
• Malfunction in air bag diagnosis sensor unit

SRC-94

< DTC/CIRCUIT DIAGNOSIS >

B1086 SEAT BELT PRE-TENSIONER LH

NO

>> INSPECTION END

B1087 SEAT BELT PRE-TENSIONER LH

SRC-95

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SRC

N

O

P

B1087 SEAT BELT PRE-TENSIONER LH

DTC Logic

INFOID:0000000009649915

DTC DETECTION LOGIC

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.

Without CONSULT

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status. Refer to

SRC-15, "On Board Diagnosis Function"

.

NOTE:
SRS does not enter the diagnosis mode if no malfunction is detected in the user mode.

Is malfunctioning part detected?

YES

>> Refer to

SRC-95, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009649916

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.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace harness connector.

2.

CHECK WIRING HARNESS

Check the wiring harness externals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace wiring harness.

3.

REPLACE SEAT BELT PRE-TENSIONER

1.

Replace seat belt pre-tensioner LH. Refer to

SR-31, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to

SRC-95, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 4.

NO

>> INSPECTION END

4.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to

SR-29, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to

SRC-95, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1.

DTC

Display contents of

CONSULT

DTC detecting condition

Possible cause

B1087

PRE-TEN FRONT LH
[VB-SHORT]

Seat belt pre-tensioner LH circuit is
shorted to power supply circuit

• Disconnection of wiring harness and short
• Malfunction in seat belt pre-tensioner LH
• Malfunction in air bag diagnosis sensor unit

SRC-96

< DTC/CIRCUIT DIAGNOSIS >

B1087 SEAT BELT PRE-TENSIONER LH

NO

>> INSPECTION END