Nissan Leaf. Manual - part 1124

B1430, B1432 SEAT BELT PRE-TENSIONER LH

SRC-97

< DTC/CIRCUIT DIAGNOSIS >

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1. Replace the seat belt pre-tensioner LH. Refer to 

SR-40, "Removal and Installation"

.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 7.

NO

>> Clear DTC. Inspection End.

7.

RELATED HARNESS

Replace the related harness.

>> END

SRC-98

< DTC/CIRCUIT DIAGNOSIS >

B1431 SEAT BELT PRE-TENSIONER

B1431 SEAT BELT PRE-TENSIONER

Description

INFOID:0000000010877019

DTC B1431 SEAT BELT PRE-TENSIONER RH

The seat belt pre-tensioner RH is wired to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit

will monitor for opens and shorts in detected lines to the seat belt pre-tensioner RH.

PART LOCATION

Refer to 

SRC-6, "Component Parts Location"

.

DTC Description

INFOID:0000000010877020

DTC DETECTION LOGIC

POSSIBLE CAUSE

[B1431–09, B1431–1A]

• Connection malfunction or short circuit of harness and connector

• Internal malfunction of seat belt pre-tensioner RH

• Internal malfunction of air bag diagnosis sensor unit

[B1431–11]

• Connection malfunction or short circuit to ground of harness and connector

• Internal malfunction of seat belt pre-tensioner RH

• Internal malfunction of air bag diagnosis sensor unit

[B1431–12]

• Connection malfunction or short circuit to power supply of harness and connector

• Internal malfunction of seat belt pre-tensioner RH

• Internal malfunction of air bag diagnosis sensor unit

[B1431–13]

• Connection malfunction or open circuit of harness and connector

• Internal malfunction of seat belt pre-tensioner RH

• Internal malfunction of air bag diagnosis sensor unit

FAIL-SAFE

—

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B1431–09

PRE-TEN FRONT RH 
[front seat belt pre-tensioner 
squib right hand component 
failures (cross connection)]

[SHORT]

Seat belt pre-tensioner RH circuits are shorted to each other

B1431–11

PRE-TEN FRONT RH 
(front seat belt pre-tensioner 
squib right hand circuit short 
to GND)

[GND-SHORT]

Seat belt pre-tensioner RH circuit is shorted to ground

B1431–12

PRE-TEN FRONT RH 
(front seat belt pre-tensioner 
squib right hand circuit short 
to battery)

[VB-SHORT]

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

B1431–13

PRE-TEN FRONT RH 
(front seat belt pre-tensioner 
squib right hand circuit)

[OPEN]

Seat belt pre-tensioner RH circuit is open

B1431–1A

PRE-TEN FRONT RH 
(front seat belt pre-tensioner 
squib right hand circuit re-
sistance below threshold)

[SHORT]

Seat belt pre-tensioner RH circuits are shorted to each other

B1431 SEAT BELT PRE-TENSIONER

SRC-99

< DTC/CIRCUIT DIAGNOSIS >

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DTC CONFIRMATION PROCEDURE (With CONSULT)

1.

CHECK SELF-DIAG RESULT

1. Turn ignition switch ON.

2. Check for DTC using CONSULT.
Is the DTC detected?

YES (Current DTC)>>Refer to 

SRC-99, "Diagnosis Procedure"

.

YES (Past DTC)>>GO TO 2.

NO

>> Inspection End.

2.

ERASE SELF-DIAG RESULT

Erase the DTC using CONSULT.
Can the DTC be erased?

YES

>> Inspection End.

NO

>> Refer to 

SRC-99, "Diagnosis Procedure"

.

DTC CONFIRMATION PROCEDURE (Without CONSULT)

1.

CHECK SELF-DIAG RESULT

1. Turn ignition switch ON.

2. Check the air bag warning lamp status. Refer to 

SRC-11, "On Board Diagnosis Function"

.

NOTE:

SRS will not enter diagnosis mode if no malfunction is detected in user mode.
Is the DTC detected?

YES

>> Refer to 

SRC-99, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010877021

1.

HARNESS CONNECTOR

Visually inspect all applicable harness connectors for the following:

• Visible damage to connector or terminal

• Loose terminal

• Poor connection

NOTE:

All harness connectors should be inspected from the air bag diagnosis sensor unit to the end component

(including any in-line connectors).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform one of the following repairs:

• Visible damage: Replace the harness.

• Loose terminal: Secure the terminal.

• Poor connection: Secure the connection.

2.

CONFIRM DTC

1. Reconnect all harness connectors.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 3.

NO

>> Refer to 

GI-53, "Intermittent Incident"

.

3.

WIRING HARNESS

Check the wiring harness for visible damage.

NOTE:

The entire wiring harness should be inspected from the air bag diagnosis sensor unit to the end component

(including any in-line connectors).
Is the inspection result normal?

SRC-100

< DTC/CIRCUIT DIAGNOSIS >

B1431 SEAT BELT PRE-TENSIONER

YES

>> GO TO 4.

NO

>> Replace the harness.

4.

CONFIRM DTC

1. Reconnect all harness connectors.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 5.

NO

>> Refer to 

GI-53, "Intermittent Incident"

.

5.

AIR BAG DIAGNOSIS SENSOR UNIT

1. Replace the air bag diagnosis sensor unit. Refer to 

SR-38, "Removal and Installation"

.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 6.

NO

>> Clear DTC. Inspection End.

6.

SEAT BELT PRE-TENSIONER RH

1. Replace the seat belt pre-tensioner RH. Refer to 

SR-40, "Removal and Installation"

.

2. Turn ignition switch ON.

3. Check for DTC using CONSULT.
Is DTC still current?

YES

>> GO TO 7.

NO

>> Clear DTC. Inspection End.

7.

RELATED HARNESS

Replace the related harness.

>> END