Clockspring Assembly / Spiral Cable: Service and Repair
AIR BAG MODULE(S) AND CLOCK SPRINGREMOVAL 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 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.
Removal Steps 1-4:
Required Special Tools:
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: M.U.T.-III USB Cable
- MB991911: M.U.T.-III Main Harness B
- MB992006: Extra Fine Probe
- MB990784: Ornament remover
Removal Steps 1-2:
Required Special Tools:
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: M.U.T.-III USB Cable
- MB991911: M.U.T.-III Main Harness B
REMOVAL SERVICE POINT
[[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]]COVER REMOVAL
Insert the special tool MB990784 as shown in the illustration to remove the cover.
[[C]]STEERING WHEEL-DRIVER'S AIR BAG MODULE ASSEMBLY REMOVAL
WARNING:
- The air bag module must not be measured with such equipment as an ohmmeter, nor disassembled.
- The removed air bag module should be stored in a clean, dry place with the deployment surface facing up.
1. By sliding the A section (in the figure) of the air bag module connector in the arrow direction, disconnect the connector.
2. Insert the hexagonal bit socket into the arrow section in the figure. Completely loosen the bolt, and then remove the steering wheel air bag module assembly.
NOTE: Use a hexagonal bit socket or a hexagonal wrench having an effective length of 75 mm (0.2 inches) or more in the hexagonal section and diameter of 8 mm or more.
[[D]]CLOCK SPRING REMOVAL
WARNING: The removed clock spring should be stored in a clean, dry place.
[[E]]AIR BAG MODULE REMOVAL (FRONT PASSENGER'S SIDE)
WARNING:
- When the passenger's air bag module is removed, do not damage the engagement of the pawls.
- The removed passenger's air bag module should be stored in a clean, dry place with the deployment surface facing up.
Insert the screwdriver (-) into the position specified in the figure and lift the screwdriver upward to release the pawls engaged, and then remove the passenger's air bag module.
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 MB991958, always turn the ignition, switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
3. 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.
Confirm that no DTCs other than 24 and 21 are set.
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.
The content of this article reflects the changes identified in TSB-08-52B-001
A modified clock spring has been adopted for Service Parts on affected vehicles as of September 2007. New and old style parts are interchangeable. This TSB advises the procedures for alignment of the neutral point of the new clock spring when a part is replaced.
Parts Identification
Replacement Clockspring Alignment As Per Manual Update TSB-08-52B-001:
Mating Mark Alignment
Replacement Clockspring Alignment As Per Manual Update TSB-08-52B-001 (Part 2):
1. Turn the clockspring clockwise fully.
2. Turn the clockspring anti-clockwise (counter-clockwise) approx. 3/4 turns to align the mating marks.
3. Check that the white or yellow roller can be seen from the window for checking the neutral point when the mating marks are aligned.
NOTE: If the white or yellow roller cannot be seen or black roller can be seen, the neutral point is not aligned correctly.
4. Install the clockspring to the column switch.
]]C[[STEERING WHEEL-DRIVER'S AIR BAG MODULE ASSEMBLY INSTALLATION
CAUTION: When installing the steering wheel, and air bag module ensure that the harness of the clock spring does not become caught or tangled.
1. 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[[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 no, Refer to "Displaying & Reading Trouble Codes".