B1209 - nissan sentra 2010what does this mean and how do i fix the problem?

Question

the car was purchased by my mom. The car has a salvage title and the airbag light has been on since she purchased the car. Mechanic tried to replace the airbag but the light stayed on and now we have this code. Can you help me?

Answer 1

B1209- FRONTAL COLLISION

DETECTION

 

Driver and front passenger air bag modules are deployed. was the air bag console unit replaced? if not that it probably step one, after checking 

 

FOR FRONTAL COLLISION: When SRS is activated in a collision

CAUTION:

Due to varying models and option levels, not all parts listed in the chart below apply to all vehicles.

WORK PROCEDURE

1. Before performing any of the following steps, ensure that all vehicle body and structural repairs have been

completed.

2. Replace the diagnosis sensor unit.

3. Remove the front air bag modules, crash zone sensor assembly, bracket and seat belt pre-tensioner

assemblies.

4. Check the SRS components using the table below:

Replace any SRS components showing visible signs of damage. (dents, cracks and deformation, etc.)

5. Install new front air bag modules, crash zone sensor assembly, bracket and seat belt pre-tensioner

assemblies.

6. Perform self-diagnosis using CONSULT-III or air bag warning lamp. Refer to SRS-26, "Trouble Diagnosis

without CONSULT-III" for details.

Ensure entire SRS operates properly.

7. After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to

SRS-20, "SRS Operation Check".

SRS INSPECTION (FOR FRONTAL COLLISION)

Part Inspection

Driver air bag module If the driver air bag has deployed:

REPLACE

Install with new fasteners.

Front passenger air bag module

(if equipped)

If the front passenger air bag has deployed:

REPLACE

Install with new fasteners.

Crash zone sensor If any of the front air bags or seat belt pre-tensioners* have been activated:

REPLACE the crash zone sensor and bracket with new fasteners.

*: Confirm seat belt pre-tensioner activation using CONSULT-III only.

Seat belt pre-tensioner assemblies

(All applicable locations: buckle,

retractor, lap outer)

If either the driver or passenger seat belt pre-tensioner* has been activated:

REPLACE all seat belt pre-tensioner assemblies with new fasteners.

*: Confirm seat belt pre-tensioner activation using CONSULT-III only.

Diagnosis sensor unit If any of the SRS components have been activated:

REPLACE the diagnosis sensor unit.

Install with new fasteners.

Steering wheel 1. Visually check steering wheel for deformities.

2. Check harness (built into steering wheel) and connectors for damage, and terminals for deformities.

3. Install driver air bag module into the steering wheel to check fit and alignment with the wheel.

4. Check steering wheel for excessive free play.

5. If no damage is found, reinstall.

6. If damaged—REPLACE.

Spiral cable If the driver front air bag has deployed:

REPLACE the spiral cable.

Occupant classification system

(Passenger seat)

1. Remove passenger seat assembly.

2. Check control unit case for dents, cracks of deformities.

3. Check connectors and pressure sensor tube for damage, and terminals for deformities.

4. Check seat frame and cushion pan for dents or deformities.

5. If no damage is found, reinstall seat with new fasteners.

6. If damaged — REPLACE seat cushion assembly with new fasteners.

Comments

thank you for taking the time to answer my question.  I will pass this information on to my parents and hopefully they'll be able to remedy the problem.