Removal and Installation

REMOVAL AND INSTALLATION

WARNING:

- Never attempt to disassemble or repair the air bag modules or clock spring. If faulty, replace it.

- Do not drop the air bag modules or clock spring or allow contact with water, grease or oil. Replace it if a dent, crack, deformation or rust is detected.

- The air bag modules should be stored on a flat surface with the pad cover facing upward. Do not place anything on top of it.

- Do not expose the air bag modules to temperatures over 93°C (200°F).

- After the air bag deployment, replace the air bag module with a new one. Also, check the clock spring, and replace with a new part if there is an abnormality.

- Wear gloves and safety glasses when handling air bags that have already deployed.

- Certain components of this vehicle, such as air bag modules, may contain perchlorate materials.
Special handling may apply. For additional information, see www.dtsc.ca.gov/hazardouswaste/perchlorate.

- An undeployed air bag module should only be disposed of in accordance with the procedures (Refer to Service and Repair).

- When removing and installing the front passenger seat, be sure to carry out accuracy check of the occupant classification sensor after the seat has been installed in the vehicle.
(On-Vehicle Service Testing and Inspection.)

SIDE-AIR BAG MODULE

For removal and installation of the front seatback assembly with side-air bag module, refer to Front Seat Front Seat Assembly Removal and Installation.

DRIVER'S AIR BAG MODULE AND CLOCK SPRING

CAUTION:
On vehicles with ASC, always carry out steering wheel sensor calibration after the clock spring has been installed Testing and Inspection). This is necessary because the ASC-ECU should update the steering neutral point.

Required Special Tools:

- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicle Communication Interface(V.C.I.)

- MB991827: M.U.T.-III USB Cable

- MB991910: M.U.T.-III Main Harness A

- MB992006: Extra Fine Probe

REMOVAL SERVICE POINTS

[[A]] NEGATIVE (-) BATTERY CABLE DISCONNECTION

DANGER:
Wait at least 60 seconds after disconnecting the battery cable before doing any further work. (Refer to Service Precautions).

WARNING:
Battery posts, terminals and related accessories contain lead and lead compounds. WASH HANDS AFTER HANDLING.

Disconnect the negative (-) battery cable from the battery and tape the terminal to prevent accidental connection and air bag(s) deployment.

[[B]] COVER REMOVAL

Insert the ornament remover (Special tool: MB990784) into the notch shown in the figure, and remove the cover.

[[C]] DRIVER'S AIR BAG MODULE CONNECTOR REMOVAL

Slide the outer housing of the driver's air bag module connector in the arrow direction shown, and disconnect the connector.

[[D]] DRIVER'S AIR BAG MODULE ASSEMBLY REMOVAL

WARNING:

- The air bag module must not be measured with such equipment as an ohmmeter.

- The air bag module must not be disassembled.

- The removed air bag module should be stored in a clean, dry place with the deployment surface facing up.

1. Using t-type long torx wrench (T30), a torx screw is loosened completely and removed [CANADA, Except vehicles with S-AWC].

2. Loosen the torx screw and remove the air bag module assembly [Vehicles with S-AWC (Except CANADA)].

[[E]] STEERING WHEEL ASSEMBLY REMOVAL

Use special tool MB990803 to remove the steering wheel.

[[F]] CLOCK SPRING REMOVAL

WARNING:
The removed clock spring should be stored in a clean, dry place.

[[G]] PASSENGER'S (FRONT) AIR BAG MODULE CONNECTOR REMOVAL

Slide the outer housing of the passenger's (front) air bag module connector in the arrow direction shown, and disconnect the connector.

[[H]] PASSENGER'S (FRONT) AIR BAG MODULE REMOVAL

WARNING:

- The air bag module must not be measured with such equipment as an ohmmeter.

- The air bag module must not be disassembled.

- The removed air bag module should be stored in a clean, dry place with the deployment surface facing up.

Insert a slotted (-) screwdriver or similar tool to the location shown in the figure. After disengaging the tabs, remove the front passenger's air bag module.

INSTALLATION SERVICE POINTS

]]A[[ PRE-INSTALLATION INSPECTION

1. WARNING:
Dispose of air bag modules only according to the specified procedure (Refer to Service and Repair).

When installing the new air bag modules and clock spring, refer to "INSPECTION" ( Inspection).

2. Connect the negative (-) battery cable.

3.
CAUTION:
To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK"
(OFF) position before connecting or disconnecting scan tool MB991958.

Connect scan tool MB991958 to the data link connector.
4. Turn the ignition switch to the "ON" position.
5. Check DTCs using scan tool MB991958 to ensure entire SRS operates properly.
At this time, check that no DTC except B1B02, B1B06, B1B0A and B1B0E are set.
6. DANGER:
Wait at least 60 seconds after disconnecting the battery cable before doing any further work. (Refer to Service Precautions).

WARNING:
Battery posts, terminals and related accessories contain lead and lead compounds.
WASH HANDS AFTER HANDLING.

Turn the ignition switch to the "LOCK" (OFF) position. Disconnect the negative (-) battery cable and tape the terminal to prevent accidental connection and air bags deployment.

]]B[[ CLOCK SPRING INSTALLATION

1. Check that the front wheels are at the straight-ahead position.

2.
CAUTION:

- If the center of the clock spring is not correctly aligned, the steering wheel may not be turned fully or the cable inside the clock spring may be broken, causing the SRS air bag to be inoperative or operated incorrectly.

- When aligning the clock spring neutral position mark, perform with the clock spring independently. If performed with the steering wheel sensor installed, the steering wheel sensor may be damaged.

Align the mating marks of the clock spring.
Alignment of mating marks
(1) Turn the clock spring clockwise fully.
(2) Turn the clock spring counterclockwise approximately three and 1/2 turns to align the mating marks.
(3) Check that the white roller can be seen from the window for checking the neutral point when the mating marks are aligned.
NOTE:
If the white roller cannot be seen or black roller can be seen, the neutral point is not aligned correctly.

(4) Install the clock spring to the column switch.

3.
CAUTION:
Be sure to align the steering wheel sensor neutral position mark. If the neutral position marks are not aligned, the steering wheel operation may damage the steering wheel sensor.

Align the steering wheel sensor neutral position mark. [Vehicle with ASC]
[Alignment of mating marks]
(1) When checking the neutral position check window of the steering wheel sensor, if an arrow can be seen, turn to the direction of the arrow, and align the neutral position mark as shown in the figure.
(2) Install the steering wheel sensor to the column switch assembly, maintaining the neutral position correctly.
(3) Install the column switch assembly to the vehicle, maintaining the neutral position correctly.

]]C[[ STEERING WHEEL ASSEMBLY/DRIVER'S AIR BAG MODULE ASSEMBLY INSTALLATION

1.
CAUTION:
When installing the steering wheel and air bag module, ensure that the harness of the clock spring does not become caught or tangled.

Before installing the steering wheel and air bag module, turn the vehicle's front wheels to the straight-ahead position and align the mating marks of the clock spring.

2. After securing the steering wheel, turn the steering wheel all the way in both directions to confirm that the steering wheel rotation is normal.

]]D[[ DRIVER'S AIR BAG MODULE CONNECTOR/HORN CONNECTOR CONNECTION

Connect the connector securely and route the harnesses not to lie off the cover hole.

]]E[[ POST-INSTALLATION INSPECTION

1. Reconnect the negative (-) battery cable.

2. Turn the ignition switch to "ON" position.

3. Does the "SRS" warning light illuminate for approximately seven seconds, and go out?
4. If yes, the SRS system is functioning properly. If not, refer to Supplemental Restraint System.