Nissan Pathfinder. Manual - part 1104

B142X COLLISION DETECTION

SRC-101

< DTC/CIRCUIT DIAGNOSIS >

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B142X COLLISION DETECTION

Description

INFOID:0000000009726846

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:0000000009726847

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-101, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009726848

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"

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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"

.

SRC-102

< DTC/CIRCUIT DIAGNOSIS >

B14XX AIR BAG DIAGNOSIS SENSOR UNIT

B14XX AIR BAG DIAGNOSIS SENSOR UNIT

Description

INFOID:0000000009726831

DTC B14XX AIR BAG DIAGNOSIS SENSOR UNIT

The air bag diagnosis sensor unit will run self diagnostics when the ignition switch is turned ON. It has the

potential to set many diagnostic trouble codes which will conform to the B14XX format, but will not match any

other SRS diagnostic trouble codes. Refer to 

SRC-16, "CONSULT Function (AIR BAG)"

.

PART LOCATION

Refer to 

SRC-5, "Component Parts Location"

.

DTC Logic

INFOID:0000000009726832

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-102, "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-102, "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-16, "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-102, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009726833

1.

HARNESS CONNECTOR

Visually inspect all applicable harness connectors for the following:

• Visible damage to connector or terminal

• Loose terminal

• Poor connection

NOTE:

CONSULT name

DTC

DTC detecting condition

Repair order

CONTROL UNIT

[UNIT FAIL]

B14XX

Air bag diagnosis sensor unit is malfunc-
tioning.

Refer to 

SRC-102, "Diagnosis Procedure"

.

AIRBAG DISPOSAL

COMPLETION

B14XX AIR BAG DIAGNOSIS SENSOR UNIT

SRC-103

< DTC/CIRCUIT DIAGNOSIS >

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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-49, "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-49, "Intermittent Incident"

.

5.

AIR BAG DIAGNOSIS SENSOR UNIT

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

SR-27, "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-104

< SYMPTOM DIAGNOSIS >

SRS AIR BAG WARNING LAMP DOES NOT TURN ON

SYMPTOM DIAGNOSIS

SRS AIR BAG WARNING LAMP DOES NOT TURN ON

AIR BAG Warning Lamp Does Not Turn On

INFOID:0000000009177050

1.

CHECK METER FUSE

Check the 10A fuse [No. 13, located in the fuse block (J/B)].
Is the fuse blown?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

REPLACE METER FUSE AND CHECK AGAIN

Replace 10A fuse [No. 13, located in the fuse block (J/B)] and turn ignition switch ON.
Does the fuse blow again?

YES

>> Replace fuse and harness.

NO

>> Inspection End.

3.

CHECK HARNESS CONNECTIONS BETWEEN AIR BAG DIAGNOSIS SENSOR UNIT AND COMBINA-

TION METER
Inspect the harness and connectors between the air bag diagnosis sensor unit and the combination meter.
Do the harness or connectors have any visible damage?

YES

>> Replace harness.

NO

>> GO TO 4.

4.

CHECK COMBINATION METER

Disconnect the air bag diagnosis sensor unit harness connectors and turn ignition switch ON.
Does AIR BAG warning lamp turn on?

YES

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

SR-27, "Removal and Installation"

.

NO

>> Replace the combination meter. Refer to 

MWI-82, "Removal and Installation"

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