Nissan Cube. Manual - part 903

B1145 CURTAIN AIR BAG MODULE RH

SRC-129

< DTC/CIRCUIT DIAGNOSIS >

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B1145 CURTAIN AIR BAG MODULE RH

Description

INFOID:0000000009946253

In case of frontal collision where acceleration is more than the specified level, the ignition materials are ignited
by electric ignition system. The system burns the gas generating materials resulting in a chemical reaction.
This generates hot gases that flow into the air bag through a filter and expand the bag.

DTC Logic

INFOID:0000000009946254

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

 With CONSULT

1.

Turn ignition switch ON.

2.

Perform “AIR BAG” Self Diagnostic Result.

 Without CONSULT

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status. Refer to 

SRC-18, "Diagnosis with Air Bag Warning Lamp"

.

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-129, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009946255

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 AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-26, "Exploded View"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-129, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 4. 

NO

>> INSPECTION END

DTC

Display contents of 

CONSULT

DTC detecting condition

Possible cause

B1145

CURTAIN MODULE RH 
[OPEN]

Curtain air bag module RH circuit is open

• Disconnection of wiring harness and open
• Malfunction in side curtain air bag module RH
• Malfunction in air bag diagnosis sensor unit

SRC-130

< DTC/CIRCUIT DIAGNOSIS >

B1145 CURTAIN AIR BAG MODULE RH

4.

REPLACE CURTAIN AIR BAG MODULE

1.

Replace curtain air bag module RH. Refer to 

SR-20, "Exploded View"

2.

Perform DTC confirmation procedure. Refer to 

SRC-129, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1. 

NO

>> INSPECTION END

B1146 CURTAIN AIR BAG MODULE RH

SRC-131

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SRC

N

O

P

B1146 CURTAIN AIR BAG MODULE RH

Description

INFOID:0000000009946256

In case of frontal collision where acceleration is more than the specified level, the ignition materials are ignited
by electric ignition system. The system burns the gas generating materials resulting in a chemical reaction.
This generates hot gases that flow into the air bag through a filter and expand the bag.

DTC Logic

INFOID:0000000009946257

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

 With CONSULT

1.

Turn ignition switch ON.

2.

Perform “AIR BAG” Self Diagnostic Result.

 Without CONSULT

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status. Refer to 

SRC-18, "Diagnosis with Air Bag Warning Lamp"

.

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-131, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009946258

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 AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-26, "Exploded View"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-131, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 4. 

NO

>> INSPECTION END

DTC

Display contents of 

CONSULT

DTC detecting condition

Possible cause

B1146

CURTAIN MODULE RH 
[VB-SHORT]

Curtain air bag module RH circuit is 
shorted to power supply circuit

• Disconnection of wiring harness and short
• Malfunction in curtain air bag module RH
• Malfunction in air bag diagnosis sensor unit

SRC-132

< DTC/CIRCUIT DIAGNOSIS >

B1146 CURTAIN AIR BAG MODULE RH

4.

REPLACE CURTAIN AIR BAG MODULE

1.

Replace curtain air bag module RH. Refer to 

SR-20, "Exploded View"

2.

Perform DTC confirmation procedure. Refer to 

SRC-131, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1. 

NO

>> INSPECTION END