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 and seat belt pre-tensioners, 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 Procedures ).
- 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 Accuracy Check of Occupant Classification Sensor ).
- After the installation, perform a calibration for the ASC-ECU to learn the steering wheel sensor neutral point. Testing and Inspection ).













Required Special Tools:

- MB990784: Ornament Remover
- MB990803: Steering Wheel Puller
- 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]] DRIVER'S AIR BAG MODULE REMOVAL

CAUTION:

- Never use an electric tester to diagnose the air bag module circuit. Never attempt to disassemble the air bag module.
- Be sure to store the removed air bag module in a clean and dry place with a pad surface facing upward.
- When discarding the air bag module, discard after deploying the air bag as specified in the service procedure (Refer to Procedures ).





Using t-type long torx wrench (T30), a torx screw is loosened completely and removed.

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





Use the flat-tipped screwdriver to pull out the locking button of wiring harness side connector, and release the lock.

[[D]] STEERING WHEEL ASSEMBLY REMOVAL

1.
CAUTION:
Use the special tool to remove the steering wheel since the steering column collision absorbing mechanism may be damaged.

Position the steering wheel in a straight ahead direction.





2. Using special tool steering wheel puller (MB990803), remove the steering wheel assembly as shown in the figure.

[[E]] CLOCK SPRING REMOVAL

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





Lift the connector lock of clock spring connector to the direction of the arrow, then unlock and disconnect the connector.

INSTALLATION SERVICE POINTS

]]A[[ PRE-INSTALLATION INSPECTION

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

When installing the new air bag modules and clock spring, refer to "INSPECTION" ( Testing and 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 B1401 and B1481 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.
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 airbag 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 anti-clockwise approximately two and 9/10 turns to align the mating marks.
(3) Check that the orange roller can be seen from the window for checking the neutral point when the mating marks are aligned.
NOTE:
If the orange 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.

]]C[[ STEERING WHEEL ASSEMBLY INSTALLATION





1.
CAUTION:
When installing the steering wheel assembly, do not trap the clock spring harness.

After checking that the clock spring center alignment is already performed, install the steering wheel assembly so that its boss part is aligned with the rib of the clock spring slowly.
2. After the installation, check that there is no abnormality when the steering wheel is fully turned to left and right.

]]D[[ POST-INSTALLATION INSPECTION

1. Reconnect the negative (-) battery cable.

2. Turn the ignition switch to the "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.