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Acura CSX. Manual - part 702

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−

DTC 41-2x, 41-3x, 41-Bx (‘‘x’’ can be 0 thru 9
or A thru F):

DTC 42-2x, 42-3x, 42-Bx (‘‘x’’ can be 0 thru 9
or A thru F):

YES

24-125

Internal Failure of the Left Front

Impact Sensor

Internal Failure of the Right Front

Impact Sensor

NOTE: Before doing this troubleshooting procedure,
review SRS Precautions and Procedures (see page
24-13) and General Troubleshooting Information
(see page 24-22).

1. Clear the DTC memory (see page 24-23).

2. Turn the ignition switch to ON (II), and check that

the SRS indicator comes on for about 6 seconds
and then goes off.

Replace the left front impact sensor

(see page 24-210), then clear the DTC. If the DTC
returns, replace the SRS unit (see page 24-203).

Intermittent failure, system is OK at this time.

Go to Troubleshooting Intermittent Failures
(see page 24-24). If another DTC is indicated,
troubleshoot the DTC.

NOTE: Before doing this troubleshooting procedure,
review SRS Precautions and Procedures (see page
24-13) and General Troubleshooting Information
(see page 24-22).

1. Clear the DTC memory (see page 24-23).

2. Turn the ignition switch to ON (II), and check that

the SRS indicator comes on for about 6 seconds
and then goes off.

Replace the right front impact sensor

(see page 24-210), then clear the DTC. If the DTC
returns, replace the SRS unit (see page 24-203).

Intermittent failure, system is OK at this time.

Go to Troubleshooting Intermittent Failures
(see page 24-24). If another DTC is indicated,
troubleshoot the DTC.

Does the SRS indicator stay on, and is DT C 41-2x,
41-3x, or 41-Bx indicated?

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

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−

DTC 43-1x (‘‘x’’ can be 0 thru 9 or A thru F):

Special Tools Required

YES

24-126

SRS

No Signal From the Left Side Impact Sensor
(first)

• SRS inflator simulator 07SAZ-TB4011A
• SRS simulator lead L 070AZ-SNAA300

NOTE: Before doing this troubleshooting procedure,
review SRS Precautions and Procedures (see page
24-13), General Troubleshooting Information (see page
24-22), and Battery Terminal Disconnection and
Reconnection (see page 22-68).

1. Clear the DTC memory (see page 24-23).

2. Turn the ignition switch to ON (II), and wait for

10 seconds.

3. Read the DTC (see page 24-22).

Go to step 6.

Go to step 4.

4. Read the DTC.

Go to step 5.

Intermittent failure, system is OK at this time.

Go to Troubleshooting Intermittent Failures
(see page 24-24). If DTC 43-1x except (DTC 43-11
and 43-12) is indicated, faulty left side impact
sensor (first); replace the left side impact sensor
(first) (see page 24-204), then clear the DTC.

5. Read the DTC.

Troubleshoot DTC B2-1x (see page 24-174).

Faulty left side impact sensor (first); replace

the left side impact sensor (first) (see page 24-204),
then clear the DTC.

6. Read the DTC.

Faulty left side impact sensor (first); replace

the left side impact sensor (first) (see page 24-204),
then clear the DTC.

Go to step 7.

7. Turn the ignition switch to LOCK (0).

8. Disconnect the negative cable from the battery,

then wait at least 3 minutes.

9. Disconnect both seat belt buckle tensioner

connectors (see step 8 on page 24-21) and both
seat belt tensioner connectors (see step 7 on page
24-21).

10. Disconnect SRS unit connector B (28P) from the

SRS unit (see step 9 on page 24-21).

11. Disconnect the floor wire harness 4P connector (A)

from the left side impact sensor (first).

Is DT C 43-11 indicated?

Is DT C 43-12 indicated?

Is DT C B2-11 also indicated?

Is DT C 45-11 also indicated?

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０３

０４

−

YES

24-127

SRS UNIT CONNECTOR B (28P)

12. Measure the resistance between SRS unit

connector B (28P) terminals No. 25 and No. 26.
There should be an open circuit or at least 1 M

Go to step 13.

Short in the floor wire harness; replace the

floor wire harness, then clear the DTC.

13. Measure the resistance between body ground and

SRS unit connector B (28P) terminals No. 25 and
No. 26, individually. There should be an open
circuit or at least 1 M

Go to step 14.

Short to ground in the floor wire harness;

replace the floor wire harness, then clear the
DTC.

14. Reconnect the negative cable to the battery.

15. Turn the ignition switch to ON (II).

16. Measure the voltage between body ground and

SRS unit connector B (28P) terminals No. 25 and
No. 26, individually. There should be less than 0.2 V.

Go to step 17.

Short to power in the floor wire harness;

replace the floor wire harness, then clear the
DTC.

Wire side of female terminals

Is the r esistance as specif ied?

Is the voltage as specif ied?

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−

YES

Special Tools Required

YES

DTC 44-1x (‘‘x’’ can be 0 thru 9 or A thru F):

24-128

SRS

07SAZ-TB4011A

070AZ-SNAA300

Red wire

SRS UNIT CONNECTOR B (28P)

17. Turn the ignition switch to LOCK (0).

18. Connect the SRS inflator simulator (jumper

connector) and the red lead of simulator lead L to
the floor wire harness 4P connector (A).

19. Measure the resistance between SRS unit

connector B (28P) terminals No. 25 and No. 26.
There should be less than 1.0

Faulty left side impact sensor (first) or SRS

unit; replace the left side impact sensor (first)
(see page 24-204), then clear the DTC. If the
problem is still present, replace the SRS unit
(see page 24-203).

Open in the floor wire harness; replace the

floor wire harness, then clear the DTC.

• SRS inflator simulator 07SAZ-TB4011A
• SRS simulator lead L 070AZ-SNAA300

1. Clear the DTC memory (see page 24-23).

2. Turn the ignition switch to ON (II), and wait for

10 seconds.

3. Read the DTC (see page 24-22).

Go to step 5.

Go to step 4.

4. Read the DTC.

Faulty right side impact sensor (first); replace

the right side impact sensor (first) (see page
24-204), then clear the DTC.

Intermittent failure, system is OK at this time.

Go to Troubleshooting Intermittent Failures
(see page 24-24). If DTC 44-1x except DTC 44-11
and 44-12 is indicated, faulty right side impact
sensor (first). Replace the right side impact sensor
(first) (see page 24-204), then clear the DTC.

5. Read the DTC.

Faulty right side impact sensor (first); replace

the right side impact sensor (first) (see page
24-204), then clear the DTC.

Go to step 6.

No Signal From the Right Side Impact Sensor
(first)

Wire side of female terminals

Is the r esistance as specif ied?

Is DT C 44-11 indicated?

Is DT C 44-12 indicated?

Is DT C 45-11 also indicated?

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Content .. 700 701 702 703 ..