Removal and Replacement
AIR BAG MODULES AND CLOCK SPRING REMOVAL AND INSTALLATIONWARNING:
- 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 deployment of an air bag, replace the clock spring with a new one.
- Wear gloves and safety glasses when handling air bags that have already deployed.
- An undeployed air bag module should only be disposed of in accordance with the procedures.
For removal and installation of the front seatback assembly with side-airbag module, Refer to Front Seat.
REMOVAL AND INSTALLATION
<Driver's Air Bag Module, Clock Spring>:
Required Special Tools:
- MB990502: Scan Tool (MUT-II)
- MB990803: Steering Wheel Puller
- MB991613: SRS Check Harness
<Passenger's (front) Air Bag Module>:
Required Special Tools:
- MB990502: Scan Tool (MUT-II)
- MB990803: Steering Wheel Puller
- MB991613: SRS Check Harness
REMOVAL SERVICE POINTS
[[A]] NEGATIVE (-) BATTERY CABLE DISCONNECTION
DANGER: Wait at least 60 seconds after disconnecting the battery cable before doing any further work.
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
1. Remove the air bag module mounting screws (TORX� screws) at the sides of the steering wheel.
NOTE: Do not remove the screws from the holders.
WARNING: The removed air bag module should be stored in a clean, dry place with the pad cover face up.
CAUTION: When disconnecting the air bag module-to-clock spring connector, take care not to apply excessive force to it.
2. When disconnecting the connector of the clock spring from the air bag module, press the air bag's lock toward the outer side to spread to open. Use a flat-tipped screwdriver, to pry gently to remove the connector.
[[C]] STEERING WHEEL REMOVAL
CAUTION: Do not hammer on the steering wheel. Doing so may damage the collapsible column mechanism.
[[D]] CLOCK SPRING REMOVAL
WARNING: The removed clock spring should be stored in a clean, dry place.
[[E]] PASSENGER'S (FRONT) AIR BAG MODULE REMOVAL
WARNING: The removed air bag module should be stored in a clean, dry place with the pad cover face up.
INSTALLATION SERVICE POINTS
]]A[[ PRE-INSTALLATION INSPECTION
WARNING: Dispose of air bag modules only according to the specified procedure.
1. When installing the new air bag modules and clock spring, Refer to "INSPECTION."
2. Connect the negative (-) battery cable.
CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.
3. Connect scan tool MB991502 to the data link connector.
4. Turn the ignition switch to the "ON" position.
5. Conduct diagnostic test using scan tool MB991502 to ensure entire SRS operates properly.
DANGER: Wait at least 60 seconds after disconnecting the battery cable before doing any further work.
WARNING: Battery posts, terminals and related accessories contain lead and lead compounds. WASH HANDS AFTER HANDLING.
6. 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
WARNING: Ensure that the clock spring's mating marks are properly aligned. If not, the steering wheel may not rotate completely during a turn, or the flat cable in the clock spring could be damaged. This would prevent normal SRS operation and possibly cause serious injury to the driver.
Align the mating marks of the clock spring. Turn the front wheels to the straight-ahead position. Then install the clock spring to the column switch.
Turn the clock spring clockwise fully. Then turn it back approximately 3 turns counterclockwise to align the mating marks.
]]C[[ STEERING WHEEL INSTALLATION
CAUTION: When installing the steering wheel, ensure that the harness of the clock spring does not become caught or tangled.
1. Before installing the steering wheel, turn the vehicle's front wheels to the straight-ahead position and align the mating marks of the clock spring.
2. After installing the steering wheel, the remote controlled radio switch harness should be clamped at right and left sides.
3. After securing the remote controlled radio switch harness, 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 INSTALLATION
CAUTION: If there is gap at place B shown in the illustration, that means the connector is not firmly inserted, i.e. not correctly connected. In such a case, insert connector to the place, where there remains no gap at place B shown in the illustration.
1. Connect the clock spring connector securely.
2. Tighten the air bag module mounting screws to 9.0 ± 2.0 Nm (78 ± 17 in-lb).
]]E[[ 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 7 seconds, and then remain off for at least 5 seconds after turning "OFF"?
4. If yes, the SRS system is functioning properly.