Infiniti FX35, FX50 (S51). Manual - part 1746

B1211 ROLLOVER DETECTION

SRC-149

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SRC

N

O

P

2.

FINAL INSPECTION

Perform “AIR BAG” Self Diagnostic Result.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Peform diagnosis of applicable DTC.Refer to 

SRC-156, "DTC Index"

.

SRC-150

< DTC/CIRCUIT DIAGNOSIS >

B1212, B1213, B1214 RH1 SAT-SENS

B1212, B1213, B1214 RH1 SAT-SENS

Description

INFOID:0000000005241253

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 judges 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

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

DTC Logic

INFOID:0000000005241254

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

 With CONSULT-III

1.

Turn ignition switch ON.

2.

Perform “AIR BAG” Self Diagnostic Result.

 Without CONSULT-III

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status. Refer to 

SRC-16, "Air Bag Warning Lamp Diagnosis"

.

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

Is malfunctioning part detected?

YES

>> Refer to 

SRC-150, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005241255

WARNING:

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

minutes. (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.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B1212
B1213
B1214

RH1 SAT-SENS 

RH satellite sensor is malfunctioning

• Disconnection of wiring harness
• Malfunction in RH satellite sensor
• Malfunction in air bag diagnosis sen-

sor unit

B1212, B1213, B1214 RH1 SAT-SENS

SRC-151

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

I

J

K

L

M

A

B

SRC

N

O

P

3.

REPLACE SATELLITE SENSOR

1.

Replace RH satellite sensor. Refer to 

SR-23, "Exploded View"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-150, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 4. 

NO

>> INSPECTION END

4.

REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

1.

Replace air bag diagnosis sensor unit. Refer to 

SR-25, "Exploded View"

.

2.

Perform DTC confirmation procedure. Refer to 

SRC-150, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 1. 

NO

>> INSPECTION END

SRC-152

< DTC/CIRCUIT DIAGNOSIS >

B1215, B1216, B1217 LH1 SAT-SENS

B1215, B1216, B1217 LH1 SAT-SENS

Description

INFOID:0000000005241256

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 judges 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:0000000005241257

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAG RESULT

 With CONSULT-III

1.

Turn ignition switch ON.

2.

Perform “AIR BAG” Self Diagnostic Result.

 Without CONSULT-III

1.

Turn ignition switch ON.

2.

Check the air bag warning lamp status. Refer to 

SRC-16, "Air Bag Warning Lamp Diagnosis"

.

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

Is malfunctioning part detected?

YES

>> Refer to 

SRC-152, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005241258

WARNING:

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

minutes. (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.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B1215
B1216
B1217

LH1 SAT-SENS 

LH satellite sensor is malfunctioning

• Disconnection of wiring harness
• Malfunction in LH satellite sensor
• Malfunction in air bag diagnosis sen-

sor unit