Honda Civic manuals

Honda Civic Service Manual: ODS Unit Removal and Installation (KA KC KL models)

Honda Civic Service Manual / Body / Restraints / Restraints Control / Occupant Classification System / ODS Unit Removal and Installation (KA KC KL models)

7521B5

Removal

NOTE: SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service.
1. Battery Terminal (SRS) - Disconnection

1.

Make sure the ignition switch is in LOCK (0).

2.

Disconnect and isolate the negative cable and battery sensor (A) from the battery (B).

NOTE: Always disconnect the negative side first.

3.

Disconnect the positive cable (C) from the battery.

4.

Wait at least 3 minutes before starting work.
2. Front Seat Belt Lower Anchor Bolt - Passenger's Side

2-door

1.

Remove the lower anchor bolt (A).

4-door

1.

Remove the anchor cover (A).

2.

Remove the lower anchor bolt (A).
3. Head Restraint - Passenger's Side

1.

Remove the head restraint (A).
4. Front Seat - Passenger's Side

2-door

4-door

1.

Remove both seat track end covers (A).

2.

Remove the seat mounting front bolts (A).

3.

Remove the seat mounting rear bolts (A).

4.

Disconnect the connectors (A).
5. Front Seat-Back As Needed - Passenger's Side

2-door

4-door

1.

Release the strap(s) (A).

2.

Detach the connector clip (A).

3.

Detach the harness clip (B).

4.

Release the holders (C).

5.

Unzip the seat-back cover (A).

6.

Release the hook strip (B).

7.

Release the hook strips (A).

8.

Detach the harness clips (A).

9.

Pull out the harness (B).

10.

Release airbag attachment wires A and B.

11.

Remove the cover (A).

12.

Disconnect the connectors (A).

13.

Release the hooks (A).

14.

Detach the harness clips (B).
6. ODS UNIT

1.

Remove the ODS unit (A).

Installation

NOTE:

SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service.

When you replace the ODS unit, initialize the ODS unit. ODS unit initialization initializes both the OPDS sensor and the front passenger's weight sensor.
1. ODS UNIT

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NOTE:

Be sure to install the harness so that they are not pinched or interfering with other parts.

Make sure that the seat-back cover/pad is installed properly. Improper installation may prevent proper deployment.

1.

Install the ODS unit (A).
2. Front Seat-Back As Needed - Passenger's Side

1.

Install the hooks (A).

2.

Install the harness clips (B).

3.

Connect the connectors (A).

4.

Install the cover (A).

5.

Install airbag attachment wires A and B.

6.

Install the harness (A) through the hole (B).

7.

Install the harness clip (C).

8.

Install the hook strips (A).

9.

Install the hook strip (A).

10.

Zip the seat-back cover (B).

11.

Install the connector clip (A).

12.

Install the harness clip (B).

13.

Install the holders (C).

2-door

4-door

14.

Install the strap(s) (A).
3. Front Seat Assembly - Passenger's Side

1.

Connect the connectors (A).

Front side

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Rear side

2.

Install the seat mounting bolts (A).

NOTE:

Tighten the bolts by hand first, then tighten them to specified torque.

Tighten the seat mounting bolts to the specified torque in the sequence shown. Slide the seat all the way back and tighten 1 and 2, then slide it forward and tighten 3 and 4.

2-door

4-door

3.

Install both seat track end covers (A).
4. Head Restraint - Passenger's Side

1.

Install the head restraint (A).
5. Front Seat Belt Lower Anchor Bolt - Passenger's Side

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2-door

1.

Assemble the washer, the collar, and the bushing on the lower anchor bolt as shown.

NOTE: Apply medium strength liquid thread lock to the lower anchor bolt before reinstallation.

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2.

Install the lower anchor bolt (A).

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4-door

1.

Install the lower anchor bolt (A).

2.

Install the anchor cover (A).
6. Battery Terminal (SRS) - Reconnection

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NOTE: If the battery performs abnormally, test the battery.

1.

Clean the battery terminals.

2.

Connect the positive cable (A) to the battery (B).

NOTE: Always connect the positive side first.

3.

Connect the negative cable and battery sensor (C) to the battery.

4.

Apply multipurpose grease to the terminals to prevent corrosion.
7. HDS DLC - Connection

1.

Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.

2.

Turn the ignition switch to ON (II).

3.

Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.
8. DTC - Clear

1.

Clear the DTC(s) by following the screen prompts on the HDS.

2.

Turn the ignition switch to LOCK (0), then wait for 10 seconds.
9. OPDS Sensor Initialization

OPDS Sensor Initialization

When you replace the front passenger's seat-back cover/pad, the SRS unit, and/or the ODS unit, initialize the OPDS sensor with the HDS.

NOTE:

Before initializing the ODS unit, make sure the battery is fully charged.

A new (uninitialized) ODS unit installed with a faulty OPDS sensor (DTC 86-1x or 86-2x) can cause DTCs 85-71 and 85-78. If the SRS has a hard DTC 86-1x or 86-2x, troubleshoot the DTCs completely before replacing the ODS unit.

Make sure all components of the front passenger's seat are correctly installed.

Make sure nothing is on the front passenger's seat, including aftermarket seat covers or mats.

Make sure there is nothing in the front passenger's seat-back pocket.

Dehumidify inside of the vehicle with A/C.

1.

Set the seat-back in a normal position.

2.

From the HDS Main Menu, select SRS, then INITIALIZATION. In the INITIALIZATION Menu, select ODS Initialization. Follow the prompts until the OPDS sensor initialization has been completed.

3.

Turn the ignition switch to LOCK (0), then wait for 10 seconds.

NOTE: If the ODS unit fails to initialize after several attempts, replace the seat-back cover/pad equipped with an OPDS sensor, and retry. If the ODS unit continues to fail to initialize, replace the ODS unit.
10. Front Passenger's Weight Sensor Initialization

Front Passenger's Weight Sensor Initialization

When you replace the SRS unit, the front passenger's weight sensor, the front passenger's seat frame, front passenger's seat rail, or the ODS unit, initialize the front passenger's weight sensor with the HDS.

NOTE:

Before initializing the front passenger's weight sensor, make sure the battery is fully charged.

Make sure all components of the front passenger's seat are correctly installed.

Make sure nothing is on the front passenger's seat, including aftermarket seat covers or mats.

Make sure there is nothing in the front passenger's seat-back pocket.

Keep the windows and the moonroof closed.

Make sure the vehicle is on level ground.

Dehumidify inside of the vehicle with A/C.

Do not touch the front passenger's seat during the operation check.

Do not expose the front passenger's seat to sudden temperature changes.

1.

Position the front passenger's seat all the way rearward, and adjust the seat-back to the forward most position. Do not move the seat from this position until the initialization is completed.

2.

Drive the vehicle, and accelerate to 22 mph (36 km/h), then stop on level ground.

3.

From the HDS Main Menu, select SRS, then INITIALIZATION. In the INITIALIZATION Menu, select SWS Initialization. Follow the prompts until the front passenger's weight sensor initialization has been completed.

4.

Turn the ignition switch to LOCK (0).
11. Confirm Proper SRS Operation

Turn the ignition switch to ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.
ODS Unit Operation Check (KA KC KL models)
Procedure 1. After Replacing Front Passenger's Seat Component(s) After Replacing Front Passenger's Seat Component(s) ...

Seat Position Sensors
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See also:

Honda Civic Owners Manual. Automatic Brake Hold
Continuously variable transmission models Keeps the brake applied after releasing the brake pedal until the accelerator pedal is pressed. You can use this system while the vehicle is temporarily stopped, like at traffic lights and in heavy traffic. Automatic Brake Hold WARN ...

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