Horn Button Assembly Disposal
DISPOSALHINT: When scrapping a vehicle equipped with a SRS or disposing of the horn button, always first deploy the airbag in accordance with the procedure described below. If any abnormality occurs with the airbag deployment, contact the SERVICE DEPARTMENT of the TOYOTA MOTOR SALES, U.S.A, INC.
CAUTION:
- Never dispose of a horn button with an non-activated airbag.
- The airbag produces a loud, exploding sound when it activates. Perform the operation where it will not be nuisance to people near by.
- When activating the airbag, always use the specified SST (SRS airbag deployment tool). Perform operation in a place away from electrical interference.
SST 09082-00700
- When activating the airbag, stand at least 10 m (33 ft) away from the horn button.
- The horn button is very hot when the airbag is deployed. Do not touch it for at least after activation.
- Use gloves and safety glasses when handling a horn button with the deployed airbag.
- Do not apply water to a horn button with the deployed airbag.
- Always wash your hands with water after completing the operation.
1. DISPOSE OF HORN BUTTON ASSEMBLY TOGETHER WITH VEHICLE
SST 09082-00700, 09082-00760
HINT: Prepare a battery as the power source to deploy the airbag.
a. Check if the SST is functioning properly.
SST 09082-00700
1. Connect SST to the battery.
Connect the SST red clip to the positive (+) battery terminal and the black clip to the negative (-) battery terminal.
HINT: The yellow connector will be used to connect to another SST in step (e).
2. Press the SST activation switch, and check that the LED of the SST activation switch turns on.
CAUTION: If the LED illuminates when the activation switch is not pressed, SST may have a malfunction, in which case that SST should not be used.
3. Disconnect SST from the battery.
b. Follow the precaution.
c. Disconnect the cable from the negative (-) battery terminal.
CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seatbelt pretensioner activation.
d. Remove the steering column cover lower.
CAUTION: Check that there is no looseness in the steering wheel and horn button.
1. While turning the steering wheel right and left, remove the 3 screws and column lower cover.
e. Install the SST.
CAUTION: Check that there is no looseness in the steering wheel and horn button.
1. Disconnect yellow airbag connector from the spiral cable.
NOTE: When handling the airbag connector, take care not to damage the airbag wire harness.
2. Connect SST A to SST B. Then connect SST B's connector to the spiral cable.
SST 09082-00700 for SST A,
09082-00760 for SST B
NOTE: To avoid damaging the SST connector and wire harness, do not lock the secondary lock of the twin-lock.
3. Move SST at least 10 m (33 ft) away from the front side window.
4. Maintain a small opening in the front side window for the SST wire harness. Close the remaining windows at the vehicle. Close all doors.
NOTE: Take care not to damage the SST wire harness.
5. Connect the SST red clip to the positive (+) battery terminal and the black clip to the negative (-) battery terminal.
f. Deploy the airbag.
1. Check that no one is inside the vehicle or within a 10 m (33 ft) radius of the vehicle.
2. Press the SST activation switch and deploy the airbag.
CAUTION:
- When deploying the airbag, make sure that no one is near the vehicle.
- The horn button becomes extremely hot when the airbag is deployed. Do not touch it for at least 30 minutes after deployment.
- Use gloves and safety glasses when handling a horn button with a deployed airbag.
- Do not apply water to a horn button with a deployed airbag.
- Always wash your hands with water after completing the operation.
HINT: The airbag is deployed as the LED of the SST activation switch comes on.
2. DISPOSE OF ONLY HORN BUTTON ASSEMBLY
NOTE:
- When disposing of the horn button, never use the customer's vehicle to deploy the airbag.
- Be sure to follow the procedure detailed below when deploying the airbag.
HINT: Prepare a battery as the power source to deploy the airbag.
a. Check if the SST is functioning properly (see step 1-(a)).
b. Remove the horn button.
CAUTION:
- When removing the horn button, work must be started 90 seconds after the ignition switch is turned OFF and after the cable is disconnected from the negative (-) battery terminal.
- When storing the horn button, keep the airbag deployment side facing upward.
c. Using a service wire harness for the vehicle, tie down the horn button to the disc wheel.
Wire harness: Stripped wire harness section
1.25 sq.mm or more (0.0019 sq.in or more)
CAUTION: Do not use a wire harness that is too thin or any other substitute item to tie down the horn button. It may snap when the airbag deploys. Always use a vehicle wire harness that has an area of at least 1.25 sq.mm (0.0019 sq.in).
HINT: To calculate the area of the stripped wire harness section:
Area = 3.14 x sq.Diameter / 4
1. Install the 2 bolts with washers into the 2 bolt holes on the horn button.
HINT:
Bolt:
L: 35.0 mm (1.378 in.)
M: 6.0 mm (0.236 in.)
Pitch: 1.0 mm (0.039 in.)
NOTE:
- Tighten the bolts by hand until they become difficult to turn.
- Do not tighten the bolts excessively.
2. After connecting SST below to each other, connect them to the horn button.
SST 09082-00802 (09082-10801, 09082-30801)
3. Using 3 wire harnesses, wind each wire harness at least twice each around the bolts installed on the left and right sides of the horn button.
CAUTION:
- Tightly wind the wire harness around the bolts so that there is no slack.
- Make sure that the wire harness is tight. If there is slack in the wire harness, the horn button may come loose when the airbag is deployed.
4. Face the airbag deployment side of the horn button upward. Separately tie the left and right sides of the horn button to a disc wheel through the hub nut holes. Position the SST connector so that it hangs downward through the hub hole in the disc wheel.
CAUTION:
- Make sure that the wire harness is tight. If there is slack in the wire harness, the horn button may come loose when the airbag is deployed.
- Always tie down the horn button with the airbag deployment side facing upward.
NOTE:
- Use a disc wheel that you are planning to throw away,as the airbag deployment will damage the disc wheel.
- Use tires that you are planning to throw away, as the airbag deployment may damage the tires.
d. Install SST.
CAUTION: Place the tire with disc wheel and horn button on the level surface.
1. Connect the SST A to SST B. Then connect SST B's connector to horn button.
SST 09082-00700 for SST A,
09082-00760 for SST B
NOTE: To avoid damaging the SST connector and wire harness, do not lock the secondary lock of the twin lock. Also, secure some slack for the SST wire harness inside the disc wheel.
2. Move SST at least 10 m (33 ft) away from the horn button.
e. Cover the horn button with a cardboard box or tires.
1. Covering method using a cardboard box:
Cover the horn button with the cardboard box and place weights of at least 190 N (19 kgf, 43 lbf) on the cardboard box in 4 places.
Cardboard box size:
X minimum = 460 mm (18.11 in.)
Y minimum = 650 mm (25.59 in.)
NOTE:
- When the dimension Y of the cardboard box exceeds the diameter of tire, X should be the following size.
X = 460 mm (18.11 in.) + width of tire
- If using a cardboard box which is smaller than the specified size, the cardboard box will be broken during airbag deployment.
2. Covering method using tires:
Place at least 3 tires (without disc wheels) on top of the tire with disc wheel and horn button.
Tire size:
Width: 185 mm (7.28 in.)
Inner diameter: 360 mm (14.17 in.)
CAUTION: Do not use tires with disc wheels to cover the tire with disc wheel and horn button.
NOTE:
- Use tires that you are planning to throw away, as the airbag deployment may damage the tires.
- Do not place the SST connector under the tire because it could be damaged.
3. Tie the tires together with 2 wire harnesses.
CAUTION: Make sure that the wire harness is tight. If there is slack in the wire harness, the tires may come loose when the airbag is deployed.
f. Deploy the airbag.
1. Connect the the SST red clip to the positive (+) battery terminal and the black clip to the negative (-) battery terminal.
2. Check that no one is within a 10 m (33 ft) radius of the horn button.
3. Press the SST activation switch and deploy the airbag.
CAUTION: When deploying the airbag, make sure that no one is near the tire.
HINT: The airbag is deployed as the SST activation switch LED turns on.
g. Dispose of the horn button (with airbag).
CAUTION:
- The horn button becomes extremely hot when the airbag is deployed. Do not touch it for at least 30 minutes after deployment.
- Use gloves and safety glasses when handling a horn button with a deployed airbag.
- Do not apply water to a horn button with a deployed airbag.
- Always wash your hands with water after completing the operation.
1. Remove the horn button from the disc wheel.
2. Place the horn button in a plastic bag, tie it tightly and dispose of it in the same way as other general parts.