Nissan Sentra Service Manual: B14XX Air bag diagnosis sensor unit
Description
DTC B14XX AIR BAG DIAGNOSIS SENSOR UNIT
The air bag diagnosis sensor unit will run self diagnostics when the ignition switch is turned ON. It has the potential to set many diagnostic trouble codes which will conform to the B14XX format, but will not match any other SRS diagnostic trouble codes. Refer to SRC-17, "CONSULT Function (AIR BAG)".
PART LOCATION
Refer to SRC-5, "Component Parts Location".
DTC Logic
DTC DETECTION LOGIC
With CONSULT
DTC CONFIRMATION PROCEDURE (With CONSULT)
1.CHECK SELF-DIAG RESULT
- Turn ignition switch ON.
- Check for DTC using CONSULT.
Is the DTC detected? YES (Current DTC)>>Refer to SRC-99, "Diagnosis Procedure".
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-99, "Diagnosis Procedure".
DTC CONFIRMATION PROCEDURE (Without CONSULT)
1.CHECK SELF-DIAG RESULT
- Turn ignition switch ON.
- Check the air bag warning lamp status. Refer to SRC-17, "Trouble Diagnosis without CONSULT".
NOTE:
SRS will not enter diagnosis mode if no malfunction is detected in user mode.
Is the DTC detected? YES >> Refer to SRC-99, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis Procedure
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 sensor 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.CONFIRM DTC
- Reconnect all harness connectors.
- Turn ignition switch ON.
- Check for DTC using CONSULT.
Is DTC still current? YES >> GO TO 3.
NO >> Refer to GI-39, "Intermittent Incident".
3.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 4.
NO >> Replace the harness.
4.CONFIRM DTC
- Reconnect all harness connectors.
- Turn ignition switch ON.
- Check for DTC using CONSULT
Is DTC still current? YES >> GO TO 5.
NO >> Refer to GI-39, "Intermittent Incident".
5.AIR BAG DIAGNOSIS SENSOR UNIT
- Replace the air bag diagnosis sensor unit. Refer to SR-28, "Removal and Installation".
- Turn ignition switch ON.
- Check for DTC using CONSULT.
Is DTC still current? YES >> GO TO 6.
NO >> Clear DTC. Inspection End.
6.RELATED HARNESS
Replace the related harness.
>> END
B142X Collision detection
Description
DTC B142X COLLISION DETECTION
The air bag diagnosis sensor unit will set this DTC if it has detected a
collision which has resulted in a deployment
of one or more air bags or pre-tens ...
B00A0 OCS System
Description
DTC B00A0 OCCUPANT CLASSIFICATION SYSTEM (OCS)
The OCS control unit is wired to the air bag diagnosis sensor unit. The air
bag diagnosis sensor unit will monitor
the OCS for failures ...
Other materials:
Vehicle recovery (freeing a stuck vehicle)
Front (if so equipped)
Do not use the hook to tow the vehicle.
Remove the cover bumper bracket using a
flat screwdriver or any flat tool.
To protect the bumper body, place a piece of
cloth between the tool and the vehicle.
The tool used should be inserted by the
lower portion of t ...
During a call
While a call is active, the following options are
available on the screen:
“Handset”
Select this option to switch control of the
phone call over to the handset.
“Mute Mic.”
Select this option to mute the microphone.
Select again to unmute the microphone.
Red phone ( ...
Evap leak check
Inspection
CAUTION:
Do not use compressed air or a high pressure pump.
Do not exceed 4.12 kPa (0.042 kg/cm2, 0.6 psi) of pressure in EVAP
system.
NOTE:
Do not start engine.
Improper installation of EVAP service port adapter [commercial
service tool: (J-41413-OBD)] to the EVAP
...
