Infiniti EX35. Manual - part 1364

SRC-82

< COMPONENT DIAGNOSIS >

B1118, B1119 SATELLITE SENS LH

B1118, B1119 SATELLITE SENS LH

Description

INFOID:0000000003591883

DTC B1118, B1119 [UNIT FAIL] SATELLITE SENS LH

Main “G” sensor generates signal voltage, when it detects deceleration beyond the specified level by vehicle
side collision.

OPERATION

When air bag diagnosis sensor unit defines both signal voltage of the “G” sensor and the Safing algorithm to
be that of collision which exceeds specified level, the driving circuit switches on and feeds the electric ignitor of
both the front side air bag and side curtain air bag.

STRUCTURE

Integrated type of the “G” sensor element for side collision with output terminals for signal voltage.

INSTALLATION

LH satellite sensor is installed at the underside of center pillar with fixed nuts.

DTC Logic

INFOID:0000000003591884

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-82, "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:0000000003591885

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

B1118
B1119

SATELLITE SENS LH
[UNIT FAIL]

LH satellite sensor is out of order

• Disconnection of wiring harness
• Internal breakdown in LH satellite 

sensor

• Internal breakdown in air bag diag-

nosis sensor unit

B1118, B1119 SATELLITE SENS LH

SRC-83

< 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 SATELLITE SENSOR

1.

Replace LH satellite sensor. Refer to 

SR-14, "Exploded View"

.

2.

Check “Self diagnosis result” with CONSULT-III.

3.

Perform DTC confirmation procedure. Refer to 

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-16, "Exploded View"

.

2.

Check “Self diagnosis result” with CONSULT-III.

3.

Perform DTC confirmation procedure. Refer to 

SRC-82, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1. 

NO

>> INSPECTION END

SRC-84

< COMPONENT DIAGNOSIS >

B1120, B1121 SATELLITE SENS LH

B1120, B1121 SATELLITE SENS LH

Description

INFOID:0000000003591886

DTC B1120, B1121 [COMM FAIL] SATELLITE SENS LH

Main “G” sensor generates signal voltage, when it detects deceleration beyond the specified level by vehicle
side collision.

OPERATION

When air bag diagnosis sensor unit defines both signal voltage of the “G” sensor and the Safing algorithm to
be that of collision which exceeds specified level, the driving circuit switches on and feeds the electric ignitor of
both the front side air bag and side curtain air bag.

STRUCTURE

Integrated type of the “G” sensor element for side collision with output terminals for signal voltage.

INSTALLATION

LH satellite sensor is installed at the underside of center pillar with fixed nuts.

DTC Logic

INFOID:0000000003591887

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-84, "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:0000000003591888

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

B1120
B1121

SATELLITE SENS LH 
[COMM FAIL]
[UNMATCH]

LH satellite sensor is out of order

• Disconnection of wiring harness
• Internal breakdown in LH satellite 

sensor

• Internal breakdown in air bag diag-

nosis sensor unit

B1120, B1121 SATELLITE SENS LH

SRC-85

< 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 SATELLITE SENSOR

1.

Replace LH satellite sensor. Refer to 

SR-14, "Exploded View"

.

2.

Check “Self diagnosis result” with CONSULT-III.

3.

Perform DTC confirmation procedure. Refer to 

SRC-84, "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-16, "Exploded View"

.

2.

Check “Self diagnosis result” with CONSULT-III.

3.

Perform DTC confirmation procedure. Refer to 

SRC-84, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1. 

NO

>> INSPECTION END