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Acura RSX Honda Integra. Manual - part 472

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DTC (Diagnostic Trouble Codes)

Reading the DTC

Precautions

HDS

23-20

SRS

General Troubleshooting Information

The self-diagnostic function of the SRS system allows it
to locate the causes of system problems and then store
this information in memory. For easier troubleshooting,
this data can be retrieved via a data link circuit.

• When you turn the ignition switch ON (II), the SRS

indicator comes on. If it goes off after 6 seconds, the
system is normal, and is not currently detecting any
abnormality.

• If there is an abnormality, the system locates and

defines the problem, stores this information in
memory, and turns the SRS indicator on. The data
will remain in the memory even when the ignition
switch is turned off or if the battery is disconnected.

• The data is stored in memory as a diagnostic trouble

code (DTC).

• DTCs are either latching or resetting, depending on

the malfunction. With resetting DTCs the SRS
indicator will go off the next time the ignition switch
is turned ON (II) and the system is normal, but the
DTC is still stored. With latching DTCs the SRS
indicator will not turn OFF until the malfunction is
repaired and the DTC is cleared.

• When you connect the HDS to the 16P data link

connector (DLC) to short the SCS terminal, and turn
the ignition switch ON (II), the SRS indicator will
indicate the diagnostic trouble code (DTC) by the
number of blinks.

• When you connect the HDS to the 16P data link

connector (DLC), you can retrieve a more detailed
DTC in the Honda Systems ‘‘SRS’’ menu.

• After reading and recording the DTC, proceed with

the troubleshooting procedure for that code.

• Make sure the battery is sufficiently charged. If the

battery is dead or low, measuring values won’t be
correct.

• Use only a digital multimeter to check the system. If

it’s not a Honda multimeter, make sure its output is
10 mA (0.01 A) or less when switched to the smallest
value in the ohmmeter range. A tester with a higher
output could damage the airbag circuit, or cause
accidental airbag deployment and possible injury.

• Whenever the ignition switch is ON (II), or has been

turned OFF for less than 3 minutes, be careful not to
bump the SRS unit; the airbags could accidentally
deploy and cause damage or injuries.

• Before you remove the SRS harness, disconnect the

driver’s airbag connector, the front passenger’s
airbag connector, both side airbag connectors, both
seat belt buckle tensioner connectors, and both seat
belt tensioner connectors.

• Do not touch a tester probe to the terminals in the

SRS unit or harness connectors, and do not connect
the terminals with a jumper wire. Use only the
backprobe set and the HDS. Backprobe spring-loaded
lock type connectors correctly.

1. Make sure the ignition switch is OFF.

2. Connect the HDS to the DLC (A).

3. Turn the ignition switch ON (II).

4. Use the HDS to check for DTCs.

5. Read and record the DTC.

6. Turn the ignition switch OFF, and wait for

10 seconds.

7. Disconnect the HDS from the DLC.

8. Do the troubleshooting procedure for the DTC.

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HDS ‘‘SCS’’ Menu Method (retrieving the flash codes)

Patterns of DTC Indications

Reading the main code

Reading the sub code

23-21

Bulb check

Main code

Sub code

S: Second

OFF

6 S

3 S

2 S

3 S

Example

Main code=

= 12

OFF

0.1 S

1.2 S 1.2 S 1.2 S

Example

Main code=

= 21

OFF

1.2 S

1.2 S 1.2 S

0.1 S

1.2 S

Example

Main code=

= 3

1.2 S 1.2 S 1.2 S 1.2 S 1.2 S

OFF

Example

Sub code=

= 4

OFF

0.3 S

The SRS indicator (A) indicates the DTC by the number
of blinks when the HDS is connected to the DLC (data
link connector) (16P) (B).

1. Make sure the ignition switch is OFF.

2. Connect the HDS to the DLC (16P), and follow the

HDS prompts in the ‘‘SCS’’ menu.

3. Make sure the SCS line is grounded, then turn the

ignition switch ON (II). The SRS indicator comes on
for about 6 seconds, and then goes off. Then it will
blink to indicate the DTCs.

4. Read the DTC.

5. Turn the ignition switch OFF, and wait for

10 seconds.

6. Disconnect the HDS from the DLC (16P).

7. Proceed with the troubleshooting procedure for the

DTC.

(cont’d)

The DTC consists of a main code and sub code.

In case of 20 or more
Two sets of four continuous blinks count as 20.
Add any further blinks together as shown.

In case of 11

Four fast blinks count as 10.
Add any further blinks together as shown.

Count the number of blinks.

In case of 1

If the main code is ’3’, and the sub code is ’4’, record a
DTC 3-4.

Count the number of blinks.

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Examples of DTC indications

23-22

SRS

General Troubleshooting Information (cont’d)

OFF

Bulb check
period

Main code (2) Sub code (1)

Main code (1) Sub code (3)

Main code (1) Sub code (1)

3 S

1.2 S 1.2 S

2 S

0.3 S

1.2 S

3 S

0.3 S 0.3 S

1.2 S

0.3 S

S: Second

1. Continuous failure, SRS Indicator blinks like this:

DTC 2-1
Most recent problem

DTC 1-3
Second-most
recent problem

DTC 1-1
Third-most
recent problem

2. Intermittent failure, SRS Indicator blinks like this:

OFF

Bulb check
period

DTC 5-1

3. Normal (no failure, SRS Indicator blinks like this:

OFF

Bulb check
period

• Including the most recent problem, up to three different DTCs can be indicated (see example 1).
• In case of a continuous failure, the DTC will be indicated repeatedly (see example 1).
• In case of an intermittent failure, the SRS indicator will indicate the DTCs one time, then it will stay on (see

example 2).

• If both a continuous and an intermittent failure occur, both DTCs will be indicated as continuous failures.
• When the system is normal (no DTC), the SRS indicator will stay on (see example 3).
• If the SRS indicator comes on continuously without a DTC, there may be a problem with the system.
• If the SRS indicator does not come on as indicated above, always check for an open or a short to ground in the SCS

circuit before troubleshooting the system.

Indications
are repeated
in case of
continuous
failure.

Indicator stays on in
case of intermittent failure.

No DTC, system is normal,
the indicator stays on.

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Erasing the DTC Memory with HDS

Erasing the DTC Memory with Manual Mode

Special Tools Required

23-23

A
07PAZ-0010100

1. Make sure the ignition switch is OFF.

2. Connect the HDS to the DLC (A).

3. Turn the ignition switch ON (II).

4. In the TEST MODE MENU of the HDS, select DTC

CLEAR. This erases the DTC(s).

5. Turn the ignition switch OFF, and wait for

10 seconds.

6. Disconnect the HDS from the DLC.

SCS service connector 07PAZ-0010100

To erase the DTC(s) from the SRS unit, follow this
procedure.

1. Make sure the ignition switch is OFF.

2. Connect the SCS service connector (A) to the MES

connector (2P) (B). Do not use a jumper wire.

3. Turn the ignition switch ON (II).

4. The SRS indicator will come on for about 6 seconds,

and then go off. Remove the SCS service connector
from the MES connector (2P) within 4 seconds after
the indicator goes off.

5. The SRS indicator will come on again. Reconnect

the SCS service connector to the MES connector
(2P) within 4 seconds after the indicator comes on.

6. When the SRS indicator goes off, remove the SCS

service connector from the MES connector (2P)
within 4 seconds.

7. The SRS indicator will blink two times indicating

that the memory has been erased.

8. Turn the ignition switch OFF, and wait for

10 seconds.

9. Turn the ignition switch ON (II) again after the

procedure. If the SRS indicator comes on for
6 seconds, and then goes off, the system is OK.

(cont’d)

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