Infiniti EX35. Manual - part 1357

SRC-54

< COMPONENT DIAGNOSIS >

B1067, B1072 ASSIST A/B MODULE

B1067, B1072 ASSIST A/B MODULE

Description

INFOID:0000000003591788

DTC B1067, B1072 [GND-SHORT] ASSIST A/B MODULE

For front passenger air bag module, crash is judged by main “G” sensor output signal and Safing algorithm in
front direction.

OPERATION

In the case of a frontal collision whose acceleration exceeds the specified level, the ignition materials are
ignited by electric ignition system. The system burns and introduces the chemical reaction of gas generating
materials to generate hot gases that flow into the air bag through a filter and expand the bag.

STRUCTURE

Front passenger air bag module mainly consists of air bag and inflator which inflates air bag.

INSTALLATION

Front passenger air bag module is installed on the instrument panel with fixed bolts.

DTC Logic

INFOID:0000000003591789

DTC DETECTION LOGIC

With CONSULT-III

DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)

DTC CONFIRMATION PROCEDURE (WITH CONSULT-III)

1.

CHECK SELF-DIAG RESULT

1.

Turn ignition switch ON.

2.

Check the screen of CONSULT-III.

Is malfunctioning part detected?

YES

>> Refer to 

SRC-54, "Diagnosis Procedure"

.

NO

>> INSPECTION END

DTC CONFIRMATION PROCEDURE (WITHOUT CONSULT-III)

NOTE:
• SRS will not enter diagnosis mode if no malfunction is detected in user mode.

1.

CHECK AIR BAG WARNING LAMP

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status.

Is malfunctioning part detected?

YES

>> Refer to warning lamp flash code chart. Refer to 

SRC-128, "DTC Index"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003591790

WITH CONSULT-III

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3

minutes. (To discharge backup capacitor.)

• Do not use unspecified tester or other measuring device.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B1067
B1072

ASSIST A/B MODULE 
[GND-SHORT]

Front passenger air bag module circuit 
is shorted to ground

• Disconnection of wiring harness and 

short

• Internal breakdown in front passen-

ger air bag module

• Internal breakdown in air bag diag-

nosis sensor unit

B1067, B1072 ASSIST A/B MODULE

SRC-55

< COMPONENT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SRC

N

O

P

DIAGNOSTIC PROCEDURE

1.

CHECK HARNESS CONNECTOR

Check the connection of 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.

CHECK FRONT PASSENGER AIR BAG MODULE

1.

Replace front passenger air bag module. Refer to 

SR-8, "Exploded View"

2.

Check “Self diagnostic result” with CONSULT-III.

3.

Perform DTC confirmation procedure. Refer to 

SRC-54, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 4.

NO

>> INSPECTION END

4.

CHECK AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-4, "Exploded View"

.

2.

Check “Self diagnostic result” with CONSULT-III.

3.

Perform DTC confirmation procedure. Refer to 

SRC-54, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END

SRC-56

< COMPONENT DIAGNOSIS >

B1068, B1073 ASSIST A/B MODULE

B1068, B1073 ASSIST A/B MODULE

Description

INFOID:0000000003591791

DTC B1068, B1073 [SHORT] ASSIST A/B MODULE

For front passenger air bag module, crash is judged by main “G” sensor output signal and Safing algorithm in
front direction.

OPERATION

In the case of a frontal collision whose acceleration exceeds the specified level, the ignition materials are
ignited by electric ignition system. The system burns and introduces the chemical reaction of gas generating
materials to generate hot gases that flow into the air bag through a filter and expand the bag.

STRUCTURE

Front passenger air bag module mainly consists of air bag and inflator which inflates air bag.

INSTALLATION

Front passenger air bag module is installed on the instrument panel with fixed bolts.

DTC Logic

INFOID:0000000003591792

DTC DETECTION LOGIC

With CONSULT-III

DTC No. Index (“SELF-DIAG [CURRENT]”), (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)

DTC CONFIRMATION PROCEDURE (WITH CONSULT-III)

1.

CHECK SELF-DIAG RESULT

1.

Turn ignition switch ON.

2.

Check the screen of CONSULT-III.

Is malfunctioning part detected?

YES

>> Refer to 

SRC-56, "Diagnosis Procedure"

.

NO

>> INSPECTION END

DTC CONFIRMATION PROCEDURE (WITHOUT CONSULT-III)

NOTE:
• SRS will not enter diagnosis mode if no malfunction is detected in user mode.

1.

CHECK AIR BAG WARNING LAMP

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status.

Is malfunctioning part detected?

YES

>> Refer to warning lamp flash code chart. Refer to 

SRC-128, "DTC Index"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003591793

WITH CONSULT-III

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3

minutes. (To discharge backup capacitor.)

• Do not use unspecified tester or other measuring device.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B1068
B1073

ASSIST A/B MODULE 
[SHORT]

Front passenger air bag module circuits   
are shorted to each other

• Disconnection of wiring harness and 

short

• Internal breakdown in front passen-

ger air bag module

• Internal breakdown in air bag diag-

nosis sensor unit

B1068, B1073 ASSIST A/B MODULE

SRC-57

< COMPONENT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SRC

N

O

P

DIAGNOSTIC PROCEDURE

1.

CHECK HARNESS CONNECTOR

Check the connection of 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.

CHECK FRONT PASSENGER AIR BAG MODULE

1.

Replace front passenger air bag module. Refer to 

SR-8, "Exploded View"

2.

Check “Self diagnostic result” with CONSULT-III.

3.

Perform DTC confirmation procedure. Refer to 

SRC-56, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 4.

NO

>> INSPECTION END

4.

CHECK AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-4, "Exploded View"

.

2.

Check “Self diagnostic result” with CONSULT-III.

3.

Perform DTC confirmation procedure. Refer to 

SRC-56, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1.

NO

>> INSPECTION END