Seat Belts With Pre-Tensioner

REMOVAL AND INSTALLATION

WARNING:

- Never attempt to disassemble or repair the seat belt pre-tensioner. If faulty, replace it.
- Be extremely careful when handling the seat with pre-tensioner. Do not subject it to shocks, drop it, bring it close to strong magnets or allow contact with water, grease or oil. Always replace it with a new part if any dents, cracks or deformation is found.
- Do not place anything on the seat belt pre-tensioner.
- Do not expose the seat belt pre-tensioner to temperatures over 90°C (194°F).
- After operating the seat belt pre-tensioner, replace the seat belt pre-tensioner with a new part.
- Gloves and protective goggles must be worn when handling a seat belt pre-tensioner once it has been used.
- If disposing of a seat belt with pre-tensioner which has not yet been operated, its seat belt pre-tensioner must be operated first before disposal (Refer to Service and Repair ).
- When removing and installing the front passenger seat belt, 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 ).













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

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 seat belt pre-tensioner operation.

[[B]] SEAT BELT PRE-TENSIONER CONNECTOR DISCONNECTION





Use a flat-tipped screwdriver to unlock the locking button of the floor wiring harness side connector. After releasing the lock, disconnect the connector.

[[C]] SEAT BELT WITH PRE-TENSIONER REMOVAL

CAUTION:
When discarding the seat belt with pre-tensioner, discard after operating the pre-tensioner as specified in the service procedure (Refer to Service and Repair).

INSTALLATION SERVICE POINTS

]]A[[ PRE-INSTALLATION INSPECTION

1. WARNING:
Dispose of seat belt pre-tensioner only according to the specified procedure
(Refer to Service and Repair).

When installing the new seat belt pre-tensioner, refer to "INSPECTION" ( Procedures).

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 B1C3A and B1C49 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 seat belt pre-tensioner operation.

]]B[[ SEAT BELT PRE-TENSIONER CONNECTOR CONNECTION

Connect the seat belt pre-tensioner connector then securely lock the locking button of the harness-side connector.

]]C[[ 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.