Honda Civic. Manual — part 44

Is DTC 12-1x or 12-4x indicated?

YES -Go to step 9.

NO -Open in the front passenger's airbag first or second inflator; replace the
front passenger's airbag (see FRONT PASSENGER'S AIRBAG
REPLACEMENT).

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

then wait for 3 minutes.

10. Disconnect SRS unit connector A (28P) from the SRS unit (see step 9).
11. Disconnect the SRS inflator simulator from the SRS simulator lead. Do not

disconnect the simulator lead from the dashboard wire harness 4P connector.

12. Measure the resistance between the terminals of both SRS simulator leads.

There should be 1 ohms or less.

Fig. 83: Identifying Dashboard Wire Harness 4P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

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

NO -Open in the dashboard wire harness; replace the dashboard wire harness.

2008 Honda Civic EX

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

DTC 12-3X ("X" CAN BE 0 THRU 9 OR A THRU F): SHORT TO ANOTHER WIRE OR

DECREASED RESISTANCE IN FRONT PASSENGER'S AIRBAG FIRST INFLATOR; DTC 12-6X
("X" CAN BE 0 THRU 9 OR A THRU F): SHORT TO ANOTHER WIRE OR DECREASED
RESISTANCE IN FRONT PASSENGER'S AIRBAG SECOND INFLATOR

Special Tools Required

SRS inflator simulator 07SAZ-TB4011A

SRS simulator lead J 070AZ-SNAA100

SRS short canceller 070AZ-SAA0100

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

HDS).

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 12-3x or 12-6x 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 front passenger's airbag 4P connector (A) from the dashboard

wire harness.

NOTE:

Before doing this troubleshooting procedure, review SRS
Precaution 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)

Fig. 84: Identifying Front Passenger's Airbag 4P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

dashboard wire harness.

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 12-3x or 12-6x indicated?

YES -Go to step 9.

NO -Short in the front passenger's airbag first or second inflator; replace the
front passenger's airbag (see FRONT PASSENGER'S AIRBAG
REPLACEMENT).

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

then wait for 3 minutes.

10. Disconnect SRS unit connector A (28P) from the SRS unit (see step 9).
11. Disconnect the SRS inflator simulator from the SRS simulator lead. Do not

disconnect the simulator lead from the dashboard wire harness 4P connector.

12. Connect the SRS short canceller (070AZ-SAA0100) to No. 9 and No. 10

terminals, and the No. 3 and No. 4 terminals of the SRS unit connector A (28P)
(see OPENING THE SRS UNIT SHORTING CONNECTORS FOR
DIAGNOSIS).

2008 Honda Civic EX

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

13. Measure the resistance between the terminals of both SRS simulator leads.

There should be an open circuit or at least 1 M ohms.

Fig. 85: Identifying Dashboard Wire Harness 4P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

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

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

DTC 12-8X ("X" CAN BE 0 THRU 9 OR A THRU F): SHORT TO POWER IN FRONT
PASSENGER'S AIRBAG FIRST INFLATOR; DTC 12-AX ("X" CAN BE 0 THRU 9 OR A THRU F):
SHORT TO POWER IN FRONT PASSENGER'S AIRBAG SECOND INFLATOR

Special Tools Required

SRS inflator simulator 07SAZ-TB4011A

SRS simulator lead J 070AZ-SNAA100

NOTE:

Before doing this troubleshooting procedure, review SRS
Precaution and Procedures (see PRECAUTIONS AND
PROCEDURES) and General Troubleshooting Information

2008 Honda Civic EX

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