Honda Civic. Manual — part 52

Fig. 108: Identifying Floor Wire Harness 4P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. Connect the SRS inflator simulator (2 ohms connectors) and simulator lead K

to the floor wire harness connector.

6. Reconnect the negative cable to the battery.
7. Clear the DTC memory.
8. Read the DTC (see CLEAR THE DTC MEMORY WITH THE HDS).

Is DTC 27-3x indicated?

YES -Go to step 9.

NO -Short in the driver's seat belt buckle tensioner; replace the driver's seat
belt buckle (see FRONT SEAT BELT BUCKLE ).

9. Turn the ignition switch OFF. Disconnect the negative cable from the battery,

then wait for 3 minutes.

10. Disconnect both seat belt tensioner 4P connectors (see step 7

DISCONNECTING SYSTEM CONNECTORS) and the front passenger's
seat belt buckle tensioner 4P connector (see step 8 DISCONNECTING
SYSTEM CONNECTORS).

11. Disconnect SRS unit connector B (28P) from the SRS unit (see step 9

DISCONNECTING SYSTEM CONNECTORS).

12. Disconnect the simulator lead from the floor wire harness.
13. Measure the resistance between the No. 7 and No. 8 terminals of SRS unit

2008 Honda Civic EX

2006-08 RESTRAINTS SRS (Supplemental Restraint System) - Civic (Except Hybrid)

connector B (28P). There should be an open circuit or at least 1 M ohms.

Fig. 109: Measuring Resistance Between No. 7 And No. 8 Terminals Of
SRS Unit Connector B (28P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Faulty SRS unit or poor connection at SRS unit connector B (28P) and
the SRS unit. Check the connection; if the connection is OK, replace the SRS
unit (see SRS UNIT REPLACEMENT).

NO -Short in the floor wire harness; replace the floor wire harness.

DTC 27-8X ("X" CAN BE 0 THRU 9 OR A THRU F): SHORT TO POWER IN DRIVER'S SEAT
BELT BUCKLE TENSIONER

Special Tools Required

SRS inflator simulator 07SAZ-TB4011A

SRS simulator lead K 070AZ-SNAA200

1. Clear the DTC memory (see CLEAR THE DTC MEMORY WITH THE

HDS).

NOTE:

Before doing this troubleshooting procedure, review SRS
Precautions and Procedures (see PRECAUTIONS AND
PROCEDURES) and General Troubleshooting Information
(see GENERAL TROUBLESHOOTING INFORMATION).

2008 Honda Civic EX

2006-08 RESTRAINTS SRS (Supplemental Restraint System) - Civic (Except Hybrid)

2. Turn the ignition switch ON (II), and check that the SRS indicator comes on

for about 6 seconds and then goes off.

Does the SRS indicator stay on, and is DTC 27-8x indicated?

YES -Go to step 3.

NO -Intermittent failure, system is OK at this time. Go to
TROUBLESHOOTING INTERMITTENT FAILURES. If another DTC is
indicated, troubleshoot the DTC.

3. Turn the ignition switch OFF. Disconnect the negative cable from the battery,

then wait for 3 minutes.

4. Disconnect the floor wire harness 4P connector (A) from the driver's seat belt

buckle tensioner connector (B).

Fig. 110: Identifying Floor Wire Harness 4P And Driver's Seat Belt
Buckle Tensioner Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. Connect the SRS inflator simulator (2 ohms connectors) and simulator lead K

to the floor wire harness connector.

6. Reconnect the negative cable to the battery.
7. Clear the DTC memory.
8. Read the DTC (see CLEAR THE DTC MEMORY WITH THE HDS).

Is DTC 27-8x indicated?

2008 Honda Civic EX

2006-08 RESTRAINTS SRS (Supplemental Restraint System) - Civic (Except Hybrid)

YES -Go to step 9.

NO -Short to power in the driver's seat belt buckle tensioner; replace the
driver's seat belt buckle (see FRONT SEAT BELT BUCKLE ).

9. Turn the ignition switch OFF. Disconnect the negative cable from the battery,

then wait for 3 minutes.

10. Disconnect both seat belt tensioner 4P connectors (see step 7

DISCONNECTING SYSTEM CONNECTORS) and the front passenger's
seat belt buckle tensioner 4P connector (see step 8 DISCONNECTING
SYSTEM CONNECTORS).

11. Disconnect SRS unit connector B (28P) from the SRS unit (see step 9

DISCONNECTING SYSTEM CONNECTORS).

12. Disconnect the simulator lead from the floor wire harness.
13. Reconnect the negative cable to the battery.
14. Turn the ignition switch ON (II).
15. Measure the voltage between the No. 7 terminal of SRS unit connector B (28P)

and body ground, and the No. 8 terminal and body ground. There should be 0.5
V or less.

Fig. 111: Measuring Voltage Between No. 7 Terminal Of SRS Unit
Connector B (28P) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the voltage as specified?

YES -Faulty SRS unit or poor connection at SRS unit connector B (28P) and

2008 Honda Civic EX

2006-08 RESTRAINTS SRS (Supplemental Restraint System) - Civic (Except Hybrid)