Nissan Leaf. Manual - part 1110

B0001 DRIVER AIR BAG MODULE

SRC-41

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SRC

N

O

P

B0001 DRIVER AIR BAG MODULE

DTC Description

INFOID:0000000010876967

DTC B0001 DRIVER AIRBAG MODULE

The driver air bag module is dual stage and wired to the air bag diagnosis sensor unit through the spiral cable.

The air bag diagnosis sensor unit will monitor for opens and shorts in detected lines to the driver air bag mod-

ule including the spiral cable.

PART LOCATION

Refer to 

SRC-6, "Component Parts Location"

.

DTC LOGIC

POSSIBLE CAUSE

[B0001–00, B0001–09, B0001–1A]

• Connection malfunction or short circuit of harness and connector

• Internal malfunction of driver air bag module

• Internal malfunction of air bag diagnosis sensor unit

[B0001–11]

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

• Internal malfunction of driver air bag module

• Internal malfunction of air bag diagnosis sensor unit

[B0001–12]

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

• Internal malfunction of driver air bag module

• Internal malfunction of air bag diagnosis sensor unit

[B0001–13]

• Connection malfunction or open circuit of harness and connector

• Internal malfunction of driver air bag module

• Internal malfunction of air bag diagnosis sensor unit

FAIL-SAFE

—

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-42, "Diagnosis Procedure"

.

DTC

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

B0001–00

DRIVER AIRBAG MODULE 
[Driver Frontal Stage 1 De-
ployment Control (Subfault)]

[SHORT]

Driver air bag module circuits are shorted to each other
(including the spiral cable)

B0001–09

[SHORT]

Driver air bag module circuits are shorted to each other
(including the spiral cable)

B0001–11

[GND-SHORT]

Driver air bag module circuit is shorted to ground
(including the spiral cable)

B0001–12

[VB-SHORT]

Driver air bag module circuit is shorted to power supply circuit
(including the spiral cable)

B0001–13

[OPEN]

Driver air bag module circuit is open
(including the spiral cable)

B0001–1A

[SHORT]

Driver air bag module circuits are shorted to each other
(including the spiral cable)

SRC-42

< DTC/CIRCUIT DIAGNOSIS >

B0001 DRIVER AIR BAG MODULE

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-42, "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-42, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010876968

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.

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 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.

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 3

NO

>> Replace the harness.

3.

CHECK DTC

Perform each inspection according to the displayed DTC.
Which DTC is displayed?

[B0001–13]>>GO TO 4.

[B0001–12]>>GO TO 7.

[B0001–11]>>GO TO 5.

[B0001–00, B0001–09, B0001–1A]>> GO TO 6.

B0001 DRIVER AIR BAG MODULE

SRC-43

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SRC

N

O

P

4.

CHECK SPIRAL CABLE CIRCUIT 1

1. Turn ignition switch OFF.

2. Disconnect driver air bag module connector and spiral cable harness connector.

3. Check continuity between driver air bag module harness and spiral cable connector.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace spiral cable. Refer to 

SR-23, "Removal and Installation"

.

5.

CHECK SPIRAL CABLE CIRCUIT 2

1. Turn ignition switch OFF.

2. Disconnect driver air bag module connector and combination switch (spiral cable) connector.

3. Check continuity between spiral cable terminal and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace spiral cable. Refer to 

SR-23, "Removal and Installation"

.

6.

CHECK SPIRAL CABLE CIRCUIT 3

1. Turn ignition switch OFF.

2. Disconnect driver air bag module harness connector and spiral cable harness connector.

3. Check continuity between spiral cable terminals.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace spiral cable. Refer to 

SR-23, "Removal and Installation"

.

7.

REPLACE SPIRAL CABLE

1. Replace spiral cable. Refer to 

SR-23, "Removal and Installation"

.

2. Perform DTC confirmation procedure. Refer to 

SRC-41, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 8.

NO

>> Inspection End.

8.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1. Replace air bag diagnosis sensor unit. Refer to 

SR-38, "Removal and Installation"

.

2. Perform DTC confirmation procedure. Refer to 

SRC-41, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 9.

NO

>> Inspection End.

9.

REPLACE DRIVER AIR BAG MODULE

Driver air bag module

Spiral cable

Continuity

Connector

Terminal

Connector

Terminal

M147

10

M108

28

Yes

11

30

Spiral cable

Ground

Continuity 

Connector

Terminal

M108

28

No

30

Spiral Cable

Continuity 

Terminal

28

30

No

SRC-44

< DTC/CIRCUIT DIAGNOSIS >

B0001 DRIVER AIR BAG MODULE

1. Replace driver air bag module. Refer to 

SR-20, "Removal and Installation"

.

2. Perform DTC confirmation procedure. Refer to 

SRC-41, "DTC Description"

.

Is DTC detected?

YES

>> GO TO 1.

NO

>> Inspection End.