Nissan Sentra B18 (2020-2025) Service Manual: B0012-09 Active Vent

Nissan Sentra B18 (2020-2025) Service Manual / Restraints / Srs Air Bag Control System :: Dtc/circuit Diagnosis / Air Bag (air Bag Diagnosis Sensor Unit) / B0012-09 Active Vent

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen items (Trouble diagnosis content)	DTC Detection Condition
B0012–09	ACTIVE VENT [SHORT]	Diagnosis condition	When ignition switch is ON.
		Signal (terminal)	Active vent circuit is shorted to each other (terminals 41 and 42).
		Threshold	—
		Diagnosis delay time	—

POSSIBLE CAUSE

[SHORT]

Connection malfunction or short circuit of harness and connector
Internal malfunction of front passenger air bag module (active vent)
Internal malfunction of air bag diagnosis sensor unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

CHECK SELF DIAGNOSTIC RESULT
1. CONSULT
  1. Ignition switch ON.
  2. Select "Self Diagnostic Result" mode of "AIR BAG".
  3. Check for DTC.
Is the DTC detected?
YES>>
(Current DTC) Refer to DTC Diagnosis Procedure.
YES>>
(Past DTC) GO TO 2.
NO>>
Inspection End.
ERASE SELF DIAGNOSTIC RESULT
1. CONSULT
  
  Erase the DTC.
Can the DTC be erased?
YES>>
Inspection End.
NO>>
Refer to DTC Diagnosis Procedure.

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

Warning:

Before servicing, ignition switch OFF, disconnect battery negative terminal, and wait at least 3 minutes or more (to discharge backup capacitor).

Never use an unspecified tester or other measuring device.

HARNESS CONNECTOR
1. 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.
CONFIRM DTC
1. CONSULT
  1. Reconnect all harness connectors.
  2. Ignition switch ON.
  3. Select "Self Diagnostic Result" mode of "AIR BAG".
  4. Check for DTC.
Is DTC still current?
YES >>
GO TO 3.
NO >>
Refer to Intermittent Incident.
WIRING HARNESS
1. 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.
CONFIRM DTC
1. CONSULT
  1. Reconnect all harness connectors.
  2. Ignition switch ON.
  3. Select "Self Diagnostic Result" mode of "AIR BAG".
  4. Check for DTC.
Is DTC still current?
YES >>
GO TO 5.
NO >>
Refer to Intermittent Incident.
FRONT PASSENGER AIR BAG MODULE
1. CONSULT
  1. Replace the front passenger air bag module. Refer to Removal and Installation.
  2. Ignition switch ON.
  3. Select "Self Diagnostic Result" mode of "AIR BAG".
  4. Check for DTC.
Is DTC still current?
YES >>
GO TO 6.
NO >>
Clear DTC. Inspection End.
AIR BAG DIAGNOSIS SENSOR UNIT
1. CONSULT
  1. Replace the air bag diagnosis sensor unit. Refer to Removal and Installation.
  2. Ignition switch ON.
  3. Select "Self Diagnostic Result" mode of "AIR BAG".
  4. Check for DTC.
Is DTC still current?
YES >>
GO TO 7.
NO >>
Clear DTC. Inspection End.
RELATED HARNESS
1. Replace the related harness.
>>
Inspection End.

B0012-55 Active Vent

Dtc Description DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen items (Tro ...

Other materials:

Cleaning interior
Periodically remove loose dust, debris, and particles from the interior trim, plastic components, and seats of your Nissan Sentra using a vacuum cleaner or a soft-bristled brush. Gently wipe vinyl and leather surfaces (if so equipped) with a clean, soft cloth dampened in a mild soap solution, ...

P2858 Clutch B Pressure
DTC Logic DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition Possible causes P2858 CLUTCH B PRESSURE (Clutch B Pressure Engagement Performance) The auxiliary gearbox gear ratio is 2.232 or more for the auxiliary gearbox 2GR ratio ...

Dtc Confirmation Procedure
DTC Confirmation Procedure PERFORM SELF DIAGNOSTIC RESULT CONSULT Ignition switch ON. CAUTION: Never start the engine. ...