Nissan Sentra. Manual - part 815

B1431, B1433 SEAT BELT PRE-TENSIONER RH

SRC-95

< DTC/CIRCUIT DIAGNOSIS >

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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-96

< DTC/CIRCUIT DIAGNOSIS >

B142A IGNITION VOLTAGE

B142A IGNITION VOLTAGE

Description

INFOID:0000000009758006

DTC B142A IGNITION VOLTAGE

Ignition voltage is supplied to the air bag diagnosis sensor unit when the ignition is in the ON position. The air

bag diagnosis sensor unit will monitor for low or high ignition voltage.

PART LOCATION

Refer to 

SRC-5, "Component Parts Location"

.

DTC Logic

INFOID:0000000009758007

DTC DETECTION LOGIC 

With CONSULT

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-96, "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-96, "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-17, "Trouble Diagnosis without CONSULT"

.

NOTE:

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

YES

>> Refer to 

SRC-96, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009758008

1.

HARNESS CONNECTOR

Visually inspect all applicable harness connectors for the following:

• Visible damage to connector or terminal

• Loose terminal

• Poor connection

CONSULT name

DTC

DTC detecting condition

Repair order

IGN VOLTAGE

[LOW]

B142A

Ignition voltage low at air bag diagnosis sensor unit. Refer to 

SRC-96, "Diagnosis Procedure"

.

IGN VOLTAGE

[HIGH]

Ignition voltage high at air bag diagnosis sensor unit.

B142A IGNITION VOLTAGE

SRC-97

< DTC/CIRCUIT DIAGNOSIS >

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NOTE:

All harness connectors should be inspected from the air bag diagnosis 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-39, "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?

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-39, "Intermittent Incident"

.

5.

AIR BAG DIAGNOSIS SENSOR UNIT

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

SR-28, "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.

RELATED HARNESS

Replace the related harness.

>> END

SRC-98

< DTC/CIRCUIT DIAGNOSIS >

B142X COLLISION DETECTION

B142X COLLISION DETECTION

Description

INFOID:0000000009758009

DTC B142X COLLISION DETECTION

The air bag diagnosis sensor unit will set this DTC if it has detected a collision which has resulted in a deploy-

ment of one or more air bags or pre-tensioners. If this DTC is detected after a SRS repair, the air bag diagno-

sis sensor unit has not yet been replaced. This DTC can not be erased.

PART LOCATION

Refer to 

SRC-5, "Component Parts Location"

.

DTC Logic

INFOID:0000000009758010

DTC DETECTION LOGIC 

With CONSULT

DTC CONFIRMATION PROCEDURE (With CONSULT)

1.

INSPECTION START

Turn ignition switch ON.

>> GO TO 2.

2.

CHECK SELF-DIAG RESULT

Check for the DTC on CONSULT.
Is the DTC detected?

YES

>> Refer to 

SRC-98, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009758011

Refer to 

SR-5, "For Frontal Collision"

 or 

SR-7, "For Side and Rollover Collision"

.

CONSULT name

DTC

DTC detecting condition

Repair order

FRONTAL COLLISION DETECTION

B1421

Frontal collision detected. Driver and/or 
front passenger air bag modules are de-
ployed.

Refer to 

SR-5, "For Frontal Collision"

.

SIDE COLLISION DETECTION

B1422

Side collision detected. Curtain air bag 
module and seat belt pre-tensioner are 
deployed.

Refer to 

SR-7, "For Side and Rollover 

Collision"

.

REAR COLLISION DETECTION

B1425

Rear collision has been detected.

Replace air bag diagnosis unit. Refer to 

SR-28, "Removal and Installation"

.

AIRBAG DISPOSAL COMPLETION

B1426

Collision has been detected. Air bag di-
agnosis sensor unit has not yet been re-
placed following repairs.