Acura CSX. Instruction — page 690

02

YES

NO

YES

NO

24-77

SRS UNIT CONNECTOR B (28P)

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

Go to step 9.

Open in the driver’s seat belt buckle

tensioner; replace the driver’s seat belt buckle
(see page 24-6), then clear the DTC.

9. Turn the ignition switch to LOCK (0). Disconnect the

negative cable from the battery, then wait at least 3
minutes.

10. Disconnect both side airbag 2P connectors (see

step 4 on page 24-20) and the front passenger’s
seat belt buckle tensioner 4P connector (see step 8
on page 24-21).

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

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

12. Measure the resistance between SRS unit

connector B (28P) terminals No. 7 and No. 8. There
should be 2.0

3.0

.

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 page 24-203).

Open in the floor wire harness; replace the

floor wire harness, then clear the DTC.

Wire side of female terminals

Is DT C 27 -1x indicated?

Is the r esistance as specif ied?

08/08/21 13:56:58 61SNR030_240_0077

01

SNR9A00K791000R273XFAAT00

DTC 27-3x (‘‘x’’ can be 0 thru 9 or A thru F):

Special Tools Required

YES

NO

24-78

SRS

B

A

070AZ-SNAA200

07SAZ-TB4011A

Short to Another Wire or Decreased
Resistance in the Driver’s Seat Belt Buckle
Tensioner

• SRS inflator simulator 07SAZ-TB4011A
• SRS simulator lead K 070AZ-SNAA200

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 check that

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

Go to step 3.

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.

3. Turn the ignition switch to LOCK (0). Disconnect the

negative cable from the battery, then wait at least 3
minutes.

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

from the driver’s seat belt buckle tensioner
connector (B).

5. Connect the SRS inflator simulator (2

connectors) and simulator lead K to the floor wire
harness connector.

6. Reconnect the negative cable to the battery.

7. Clear the DTC memory.

Does the SRS indicator stay on, and is DT C 27 -3x
indicated?

08/08/21 13:56:58 61SNR030_240_0078

02

YES

NO

YES

NO

24-79

SRS UNIT CONNECTOR B (28P)

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

Go to step 9.

Short in the driver’s seat belt buckle

tensioner; replace the driver’s seat belt buckle
(see page 24-6), then clear the DTC.

9. Turn the ignition switch to LOCK (0). Disconnect the

negative cable from the battery, then wait at least 3
minutes.

10. Disconnect both side airbag 2P connectors (see

step 4 on page 24-20) and the front passenger’s
seat belt buckle tensioner 4P connector (see step 8
on page 24-21).

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

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

12. Disconnect the simulator lead from the floor wire

harness.

13. Measure the resistance between SRS unit

connector B (28P) terminals No. 7 and No. 8. There
should be an open circuit or at least 1 M

.

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 page 24-203).

Short in the floor wire harness; replace the

floor wire harness, then clear the DTC.

Wire side of female terminals

Is DT C 27 -3x indicated?

Is the r esistance as specif ied?

08/08/21 13:56:58 61SNR030_240_0079

01

SNR9A00K791000R278XFAAT00

DTC 27-8x (‘‘x’’ can be 0 thru 9 or A thru F):

Special Tools Required

YES

NO

24-80

SRS

B

A

070AZ-SNAA200

07SAZ-TB4011A

Short to Power in the Driver’s Seat Belt
Buckle Tensioner

• SRS inflator simulator 07SAZ-TB4011A
• SRS simulator lead K 070AZ-SNAA200

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 check that

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

Go to step 3.

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.

3. Turn the ignition switch to LOCK (0). Disconnect the

negative cable from the battery, then wait at least 3
minutes.

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

from the driver’s seat belt buckle tensioner
connector (B).

5. Connect the SRS inflator simulator (2

connectors) and simulator lead K to the floor wire
harness connector.

6. Reconnect the negative cable to the battery.

7. Clear the DTC memory.

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

08/08/21 13:56:58 61SNR030_240_0080

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