Honda Civic. Manual — part 69

open in dashboard wire harness. Inspect C203 (see CONNECTOR TO
HARNESS INDEX ). If it is OK, replace the faulty harness.

DTC 41-2X, 41-3X, 41-BX ("X" CAN BE 0 THRU 9 OR A THRU F): INTERNAL FAILURE OF THE
LEFT FRONT IMPACT SENSOR

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 41-2x, 41-3x, or 41-Bx indicated?

YES -Replace the left front impact sensor (see FRONT IMPACT SENSOR
REPLACEMENT). If the DTC returns, replace the SRS unit (see SRS UNIT
REPLACEMENT).

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

DTC 42-2X, 42-3X, 42-BX ("X" CAN BE 0 THRU 9 OR A THRU F): INTERNAL FAILURE OF THE
RIGHT FRONT IMPACT SENSOR

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

NOTE:

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

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)

for about 6 seconds and then goes off.

Does the SRS indicator stay on, and is DTC 42-2x, 42-3x, or 42-Bx indicated?

YES -Replace the right front impact sensor (see FRONT IMPACT SENSOR
REPLACEMENT). If the DTC returns, replace the SRS unit (see SRS UNIT
REPLACEMENT).

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

DTC 43-1X ("X" CAN BE 0 THRU 9 OR A THRU F): NO SIGNAL FROM THE LEFT SIDE IMPACT
SENSOR (FIRST)

Special Tools Required

SRS inflator simulator 07SAZ-TB4011A

SRS simulator lead L 070AZ-SNAA300

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

HDS).

2. Turn the ignition switch ON (II), then wait for 10 seconds.
3. Read the DTC (see CLEAR THE DTC MEMORY WITH THE HDS).

Is DTC 43-11 indicated?

YES -Go to step 6.

NO -Go to step 4.

4. Read the DTC.

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)

Is DTC 43-12 indicated?

YES -Go to step 5.

NO -Intermittent failure, system is OK at this time. Go to
TROUBLESHOOTING INTERMITTENT FAILURES. If DTC 43-1 x
except DTC 43-11 and 43-12 is indicated, faulty left side impact sensor (first);
replace the left side impact sensor (first) (see SIDE IMPACT SENSOR
(FIRST) REPLACEMENT).

5. Read the DTC.

Is DTC B2-11 also indicated?

YES -Troubleshoot DTC B2-1x (see DTC B2-1X ("X" CAN BE 0 THRU 9
OR A THRU F): NO SIGNAL FROM THE REAR SAFING SENSOR).

NO -Faulty left side impact sensor (first); replace the left side impact sensor
(first) (see SIDE IMPACT SENSOR (FIRST) REPLACEMENT).

6. Read the DTC.

Is DTC 45-11 also indicated?

YES -Faulty left side impact sensor (first); replace the left side impact sensor
(first) (see SIDE IMPACT SENSOR (FIRST) REPLACEMENT).

NO -Go to step 7.

7. Turn the ignition switch OFF.
8. Disconnect the negative cable from the battery, then wait for 3 minutes.
9. Disconnect both seat belt tensioner connectors (see step 7 DISCONNECTING

SYSTEM CONNECTORS) and both seat belt buckle tensioner connectors
(see step 8 DISCONNECTING SYSTEM CONNECTORS).

10. Disconnect the floor wire harness 4P connector (A) from the left side impact

sensor (first) (see SIDE IMPACT SENSOR (FIRST) REPLACEMENT).

2008 Honda Civic EX

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

Fig. 166: Identifying Floor Wire Harness 4P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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

DISCONNECTING SYSTEM CONNECTORS).

12. Measure the resistance between the No. 25 and No. 26 terminals of SRS unit

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

Fig. 167: Measuring Resistance Between No. 25 And No. 26 Terminals Of
SRS Unit Connector B (28P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Go to step 13.

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

13. Measure the resistance between the No. 25 terminal of SRS unit connector B

(28P) and body ground, and between the No. 26 terminal and body ground.

2008 Honda Civic EX

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