Honda Civic manuals

Honda Civic Service Manual: SRS Unit Removal and Installation

Honda Civic Service Manual / Body / Restraints / Secondary / SRS Unit Removal and Installation

751100

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. M/T Shift Lever Knob

Except K24Z7 engine

1.

Except K24Z7 engine: Lower the shift lever boot (A) to release the hooks from the boot.

2.

Except K24Z7 engine: Remove the shift lever knob (B).

K24Z7 engine

3.

K24Z7 engine: Lower the shift lever boot (A) to release the hooks from the boot.

4.

K24Z7 engine: Loosen the shift lever boot ring (B).

5.

K24Z7 engine: Remove the shift lever knob (C).

6.

K24Z7 engine: Remove the shift lever boot ring.

3. Center Console Panel Assembly (M/T)

1.

Remove the center console panel (A).

4. Center Console Panel Assembly (A/T)

1.

Detach the clips (A).

2.

Remove the center console panel (A).

5. Cup Holder Panel Assembly

1.

Remove the cup holder panel assembly (A).

6. Center Console

1.

Remove the bolts (A).

2.

Disconnect the connector (B).

3.

Remove the console box mat (A).

4.

Remove the bolts (B).

5.

Disconnect the connector (A).

6.

Remove the center console (A).

7. Rear Heater Joint Duct

1.

Remove the rear heater joint duct (A).

8. SRS Unit

NOTE: The SRS unit connectors have lever locks. Release the locks before disconnecting the connectors.

To release the lock (A), pull the lever (B) while pushing the lock on the outside of the connector, then pull out the connector (C).

1.

Turn over the carpets (C).

2.

Disconnect SRS unit connectors A and B.

3.

Remove the TORX bolts using a TORX T30 bit, then remove the SRS unit (D).

Installation

NOTE:

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

After installing the SRS unit, make sure the SRS unit has the latest software. If it does not have the latest, update the software in the SRS unit.

USA and Canada models: When you replace the SRS unit, initialize the ODS unit. ODS unit initialization initializes both the OPDS sensor and the front passenger's weight sensor.

Mexico models: When you replace the SRS unit, initialize the OPDS unit. OPDS unit initialization initializes the OPDS sensor.

1. SRS Unit

NOTE: The SRS unit connectors have lever locks. Push them into position until they click and the lever locks are fully secured.

To reconnect the connector (A), push in on the connector. As the connector is pressed in, the lever (B) moves to the locked position.

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1.

Install the SRS unit (C) with the new TORX bolts using a TORX T30 bit.

2.

Connect the SRS connectors A and B.

3.

Install the carpets (D).

2. Rear Heater Joint Duct

1.

Install the rear heater joint duct (A).

3. Center Console

1.

Install the center console (A).

2.

Connect the connector (A).

3.

Install the bolts (A).

4.

Install the console box mat (B).

5.

Connect the connector (A).

6.

Install the bolts (B).

4. Cup Holder Panel Assembly

1.

Install the cup holder panel assembly (A).

5. Center Console Panel Assembly (A/T)

1.

Install the center console panel (A).

2.

Install the clips (A).

6. Center Console Panel Assembly (M/T)

1.

Install the center console panel (A).

7. M/T Shift Lever Knob

Except K24Z7 engine

1.

Except K24Z7 engine: Install the shift lever knob (A).

NOTE: Tighten the shift lever knob until the shift pattern is properly aligned.

2.

Except K24Z7 engine: Connect the shift lever boot (B).

K24Z7 engine

3.

K24Z7 engine: Install and turn the shift lever boot ring (A) until it reaches the bottom of the threads on the shift lever.

4.

K24Z7 engine: Turn the shift lever knob (B) until the shift lever knob contacts the shift lever boot ring.

5.

K24Z7 engine: Tighten the shift lever boot ring and the shift lever knob together with the shift pattern properly aligned.

6.

K24Z7 engine: Connect the shift lever boot (C).

8. 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.

9. 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.

10. SRS Unit - Update

NOTE:

Make sure the HDS/HIM or the MVCI unit has the latest software version.

If the SRS unit does not display in SYSTEM SELECTION screen of MVCI, it means cannot update the SRS unit. Replace the SRS unit as needed.

Before you update the SRS unit, make sure the battery in the vehicle is fully charged.

Never turn the ignition switch to LOCK (0) or ACCESSORY (I) during the update. If there is a problem with the update, leave the ignition switch in ON (II).

To prevent SRS unit damage, do not operate anything electrical (headlights, audio system, brakes, A/C, power windows, moonroof (if equipped), door locks, etc.) during the update.

To ensure the latest program is installed, do an SRS unit update whenever the SRS unit is substituted or replaced.

You cannot update an SRS unit with the program it already has. It will only accept a new program.

If you need to diagnose the Honda interface module (HIM) because the HIM's red (#3) light came on or was flashing during the update, leave the ignition switch in ON (II) when you disconnect the HIM from the data link connector (DLC). This will prevent SRS unit damage.

1.

Select the update program, and follow the screen prompts to update the SRS unit.

2.

If the software in the SRS unit is the latest, disconnect the updating tool from the DLC, and go back to the procedure that you were doing. If the software in the SRS unit is not the latest, follow the instructions on the screen.

NOTE: If you run into a problem during the update procedure (programming takes over 15 minutes, status bar goes over 100%, D position or immobilizer indicator flashes, HDS tablet freezes, etc.), follow these steps to minimize the chance of damaging the SRS unit:

Leave the ignition switch in ON (II).

Connect a jumper battery (do not connect a battery charger).

Shut down the updating tools.

Disconnect the updating tool from the DLC.

Reboot the updating tool.

Reconnect the updating tool to the DLC, and try the update procedure again.

3.

Turn the ignition switch to LOCK (0).

11. USA and Canada models: ODS Unit - Initialization

OPDS Sensor Initialization

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

NOTE:

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.

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:

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

Make sure nothing is on the front passenger's seat, including after market 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).

12. Mexico models: OPDS Unit Initialization

NOTE:

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

A new (uninitialized) OPDS 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 OPDS 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 OPDS Initialization. Follow the prompts until the OPDS unit initialization has been completed.

3.

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

NOTE: If the OPDS unit fails to initialize after several attempts, replace the seat-back cover/pad equipped with an OPDS sensor, and retry. If the OPDS unit continues to fail to initialize, replace the OPDS unit.

13. USA and Canada models: ODS Unit Operation Check

After Replacing Front Passenger's Seat Component(s)

NOTE: Check the ODS unit operation after any of these actions:

Front passenger's seat component(s) replacement (except ODS unit and/or front passenger's weight sensor).

SRS unit replacement.

Remove the front passenger's weight sensor(s).

After a vehicle collision.

Pre-Operation Check Set-Up

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

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 output check is completed.

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.

Do all initialization procedures, except test-driving, in the service bay.

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.

Make sure all aftermarket devices such as amplifiers, fluorescent light, air purifiers, CB or HAM radios, etc. are turned off.

1.

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

2.

From the HDS Main Menu, select SRS, then Inspection. In the Inspection Menu, select AFTER REPLACING FRONT PASSENGER'S SEAT COMPONENT(S). Follow the prompts until the ODS unit operation check has been completed.

3.

Turn the ignition switch to LOCK (0).

14. 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.

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