Nissan Sentra B18 (2020-2025) Service Manual: Removal and Installation

Removal and Installation

Warning:

• Before servicing the SRS, place the ignition switch in the OFF position, disconnect both battery terminals then wait at least three minutes.

• Always work from the side of the driver air bag module. Do not work in front of it.

• Do not use air tools or electric tools for servicing the driver air bag module.

• Always place the driver air bag module with the pad side facing upward.

• Do not cause impact to the driver air bag module by dropping, etc. Replace the driver air bag module if it has been dropped or sustained an impact.

• Do not allow oil, grease, detergent, or water to come in contact with the driver air bag module.

REMOVAL

Disconnect negative and positive battery terminals, then wait at least three minutes. Refer to Battery Disconnect.

Locate the access holes. Note:

Steering wheel removed for clarity.

Turn the steering wheel until the access hole (A) is visible from the top of the steering column.

Insert Tool (A) into access hole and under spring (1) as shown.

Lift spring (1) as shown using Tool (A) to disengage spring.

Turn the steering wheel to the opposite side, then repeat steps 3–5.

Using suitable tool (A) gently push bottom pawl (B) and gently tilt the bottom of the driver air bag module outward so the pawl will not re-engage.

CAUTION:

To avoid possible damage to the driver air bag module bottom pawl, do not use excessive force while disengaging.

Disconnect the harness connectors (A) from the driver air bag module. Remove harnesses from the hook (B).

CAUTION:

• For installing/removing the driver air bag module harness connector, insert thin screwdriver wrapped in tape into notch, lift lock and remove the connector.

• Install the connector with lock raised, and push lock into the connector.

• After installing the connector, check that the lock is pushed securely into it.

Remove the driver air bag module.

CAUTION:

• Always place the driver air bag module with pad side facing upward.

  

  : Upward

• Do not strike or impact the driver air bag module.

  

• Replace the driver air bag module if it has been dropped or sustained an impact.

• Do not insert any foreign objects (screwdriver, etc.) into the driver air bag module.

• Do not disassemble the driver air bag module.

• Do not expose the driver air bag module to temperatures exceeding 93°C (199°F).

• Do not allow oil, grease, detergent, or water to come in contact with the driver air bag module.

• If the driver air bag module is being replaced due to deployment, the spiral cable must also be replaced. Refer to Removal and Installation.

INSTALLATION

Connect the harness connectors to the driver air bag module.

CAUTION:

• Always connect the horn harness and the driver air bag module harnesses (A) and route through the hook (B) on the driver air bag module as shown.

• Do not pinch or damage the harnesses while installing the driver air bag module.

• For installing/removing the driver air bag module harness connector, insert thin screwdriver wrapped in tape into notch, lift lock and remove the connector.

• Install the connector with lock raised, and push lock into the connector.

• After installing the connector, check that the lock is pushed securely into it.

Install the driver air bag module to the steering wheel.

CAUTION: Press driver air bag module (1) until it snaps into place with a clicking sound.

Connect the negative and positive battery terminals. Refer to Battery Disconnect.

Check the horn and each function of the steering switches.

CAUTION:

• After installation is complete, check that no system malfunction is detected causing the air bag warning lamp to illuminate.

• If a malfunction is indicated by the air bag warning lamp after repair or replacement of the malfunctioning parts, perform the SRS Final Check. Refer to SRS Final Check.

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