Battery ACURA CSX 2006 Service Repair Manual


Clear the DTC Memory Using MES
Connector Without the HDSTroubleshooting Intermittent Failures
Special Tools Required
24-24SRS
General Troubleshooting Information (cont’d)
B
A
07PAZ-001010A
SCS Service Connector 07PAZ-001010A
NOTE: Make sure the battery is fully charged before
you begin.
To clear the DTCs from the SRS unit, use the HDS or the
following procedure. 1. Make sure the ignition switch is in LOCK (0).
2. Connect the SCS service connector (A) to the yellow MES 2P connector (B). Do not use a jumper
wire.
3. Turn the ignition switch to 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 blinks two times, indicating that the memory has been cleared.
8. Turn the ignition switch to LOCK (0).
9. Turn the ignition switch to ON (II) again. If the SRS indicator comes on for 6 seconds, and then goes off,
the system is OK. If the indicator stays on,
troubleshoot the DTC, refer to symptom
troubleshooting. If there was a malfunction, but it does not recur, it will
be stored in the memory as an intermittent failure, and
the SRS indicator may come on depending on this
malfunction detected.
NOTE:
 Check the condition of the battery (see page 22-67) and the charging system (see page 4-23). Low battery
voltage may cause some intermittent failures.
 A faulty or damaged cable reel can cause intermittent problems related to the driver’s airbag inflator DTCs.
After checking the DTC, troubleshoot as follows: 1. Make sure the ignition switch is in LOCK (0).
2. Connect the HDS to the data link connector (DLC).
3. Turn the ignition switch to ON (II).
4. Make sure the HDS communicates with the vehicle and the SRS unit. If it does not communicate,
troubleshoot the DLC circuit (see page 11-204).
5. In the SRS MENU on the HDS, select SRS, then DTC to clear DTCs.
6. Read the DTC (see ‘‘Reading the DTC’’).
7. Clear the DTC memory(see ‘‘Clear the DTC’’).
8. Set the parking brake, then start the engine, and let it idle.
9. The SRS indicator comes on for about 6 seconds and then goes off.
08/08/21 13:54:22 61SNR030_240_0024
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Rear Safing Sensor
For the SRS to operate:
Seat Belt Tensioners and Seat Belt Buckle Tensioners
Driver’s and Front Passenger’s Airbag(s)
Side Airbag(s)
Side Curtain Airbag(s)
Side Airbag Cutoff Indicator/OPDS Operation
Passenger Airbag Cutoff Indicator
SRS Operation
24-36SRS
System Description (cont’d)
The rear safing sensor is located under the rear seat. The rear safing sensor performs the same basic function as the
safing sensor in the SRS unit. It measures sideways G force, such as the force the vehicle would receive in a side
collision in the rear, and sends that information to the SRS unit. The SRS unit uses that information, and the
information from the second side impact sensors to determine the side that is impacted and the force. If the threshold
is met, the SRS unit deploys the side airbag, the side curtain airbag, and the seat belt tensioner on that side.
The indicator comes on when the front passenger’s seat is occupied by a small adult or child who is leaning into the
deployment path, or when an object (grocery bag, briefcase, purse, etc.) is in the seat. This indicates the passenger’s
side airbag is off and will not deploy; there is no problem with the side airbag. If the passenger sits upright or moves
to another seat, or you remove the object from the seat, the light should go off. There will be some delay between the
occupant’s repositioning and when the indicator will turn on or off.
The indicator comes on if the weight on the front passenger’s seat is about 30 kg (65 lbs) or less. This indicates the
passenger’s front airbag is off and will not deploy. The front airbag is shut off to reduce the chance of airbag-caused
injuries.
The main circuit in the SRS unit senses and analyzes the force of impact and, if necessary, ignites the inflator charges.
If battery voltage is too low or power is disconnected due to the impact, the voltage regulator and the back-up power
circuit will keep voltage at a constant level.
(1) A front impact sensor, side impact sensor, or the rear safing sensor must activate and send electric signals to the
microprocessor.
(2) The microprocessor must compute the signals and trigger the tensioners.
(3) The charges must ignite and deploy the tensioners.
(1) A front impact sensor must activate and send electric signals to the microprocessor.
(2) The microprocessor must compute the signals and trigger the airbag inflator(s).
(3) The triggered inflators must ignite and deploy the airbags.
(1) A side impact sensor must activate and send electric signals to the microprocessor.
(2) The microprocessor must compute the signals and trigger the side airbag inflator(s). However, the microprocessor
does not trigger the front passenger’s side airbag if the SRS unit determines that the front passenger’s head is in the
deployment path of the side airbag.
(3) The inflator that receives the signal must ignite and deploy the side airbags.
(1) A side impact sensor or the rear safing sensor must activate, and send electrical signals to the microprocessor.
(2) The microprocessor must compute the signals and trigger the side curtain airbag and side airbag inflator(s).
(3) The triggered inflators must ignite and deploy the side curtain airbag and side airbag at the same time.
08/08/21 13:55:33 61SNR030_240_0036
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DYNOMITE -2009-


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Self-diagnostic System
24-37
GAUGE CONTROL MODULE CAN
CAN
MICROPROCESSOR and DIAGNOSTIC CIRCUIT
SRS UNIT
IMPACT GND TRIGGER CIRCUIT
SCS
MES
DLC
VA VB
ODS UNIT
FRONT
PASSENGER’S SEAT
OPDS
SENSOR RIGHT
SIDE IMPACT
SENSOR
(SECOND)
REAR
SAFING
SENSOR
FRONT
PASSENGER’S
SEAT BELT
BUCKLE
TENSIONER
CABLE
REEL
DRIVER’S
AIRBAG
FIRST
INFLATOR
DRIVER’S
AIRBAG
SECOND
INFLATOR FRONT
PASSENGER’S
AIRBAG
SECOND
INFLATOR
FRONT
PASSENGER’S
AIRBAG
FIRST
INFLATOR
SRS
INDICATOR
SIDE AIRBAG
CUTOFF
INDICATOR
DRIVER’S
SEAT BELT
BUCKLE
TENSIONER
FRONT
PASSENGER’S
SEAT BELT
TENSIONER
DRIVER’S
SEAT BELT
TENSIONER
RIGHT SIDE
CURTAIN
AIRBAG
INFLATOR
LEFT SIDE
CURTAIN
AIRBAG
INFLATOR
DATA
LINK
CIRCUIT
MEMORY
CIRCUIT
SIDE
IMPACT
SENSOR FRONT
IMPACT
SENSOR POWER
SUPPLY
CIRCUIT LEFT
FRONT
IMPACT
SENSOR
RIGHT
FRONT
IMPACT
SENSOR LEFT
SIDE IMPACT
SENSOR
(FIRST)
RIGHT
SIDE IMPACT
SENSOR
(FIRST)DRIVER’S
SIDE AIRBAG
INFLATOR
FRONT
PASSENGER’S
SIDE AIRBAG
INFLATOR
UNDER-DASH
FUSE/RELAY
BOX LEFT
SIDE IMPACT
SENSOR
(SECOND)
FRONT
PASSENGER’S
WEIGHT
SENSORS
FRONT
PASSENGER’S
AIRBAG
CUTOFF
INDICATOR
DRIVER’S SEAT
POSITION
SENSOR
A self-diagnostic circuit is built into the SRS unit; when the ignition switch is turned to ON (II), the SRS indicator comes
on and goes off after about 6 seconds if the system is operating normally.
If the indicator does not come on, or does not go off after 6 seconds, or comes on while driving, it indicates an
abnormality in the system. The system must be inspected and repaired as soon as possible.
For better serviceability, the SRS unit memory stores a DTCs related to the cause of the malfunction, and the unit is
connected to the data link connector (DLC). This information can be read with the HDS when it is connected to the DLC
(see page 24-22).
NOTE: Before you disconnect the negative cable from battery for troubleshooting, review Battery Terminal
Disconnection and Reconnection (see page 22-68).
(cont’d)
08/08/21 13:55:34 61SNR030_240_0037
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Î(#') ’06 model
24-40SRS
Circuit Diagram
GRN
BLU YEL
214 Q
E
G504
G602
BLK
LT GRN*
BLK*
BLK*
ORN*
LT BLU*
WHT*
RED* BLU*RED*
YEL*
2 1
G506 5
22
23 13 BLU
MICURED
2
4 MICU
GRY
YEL YEL
3
1
17 Vs
Vo
Vs
Vo
Vs
Vo
Vs
Vo BLU
BRN
5
10 15
GRY
123 3 21
LT GRN
16
11 6
GRY
BLU
GRN RED
4
914
WHT
123
321
BLK
13
83
RED
BRN MAIN CIRCUIT
VB
VA
WHT
GAUGE CONTROL MODULE (TACH)
BLK
412 SRS UNIT
ODS UNIT
7112 No. 9
(7.5 A) (7.5 A)
No. 10
No. 11
(10 A)
8
9 41
BRN
BLK
YEL
BLU GRN J
BATTERY
BAT
IG1
IGNITION SWITCH
UNDER-DASH FUSE/RELAY BOX
BLK
GRN
WHT BRN
A17
DRIVE CIRCUIT DRIVE CIRCUIT F-CAN TRANSCEIVER
16 1 19 WHT RED
A
A6
24
ORN
LT BLU
A
11 12 17 18
UNDER-HOOD
FUSE/RELAY BOX
DATA LINK
CONNECTOR
(DLC)
JUNCTION
CONNECTOR
JUNCTION
CONNECTOR
SEAT BELT
REMINDER
INDICATOR
SIDE
AIRBAG
CUTOFF
INDICATOR
SRS
INDICATORJUNCTION
CONNECTOR
To
SRS
UNIT ODS
UNIT
HARNESS OPDS
SENSOR
JUNCTION
CONNECTOR DASHBOARD
WIRE
HARNESS
FRONT
PASSENGER’S
WEIGHT
SENSOR
(FRONT
INNER
SIDE) FRONT
PASSENGER’S
WEIGHT
SENSOR
(REAR
INNER
SIDE) FRONT
PASSENGER’S
WEIGHT
SENSOR
(FRONT
OUTER
SIDE)FRONT
PASSENGER’S
WEIGHT
SENSOR
(REAR
OUTER
SIDE)
DASHBOARD
WIRE
HARNESS
FLOOR
WIRE
HARNESS
DASHBOARD
WIRE
HARNESS
PASSENGER’S
AIRBAG CUTOFF
INDICATOR
JUNCTION
CONNECTOR
MEMORY
ERASE
SIGNAL
(MES)
CONNECTOR
(2P)
FRONT
PASSENGER’S
SEAT
WIRE
HARNESS
(With
seat heater)
C783 C782
18P CAN
HI
CAN
LO
K-LINE SCS MES
SRS
GND (2)
SRS
GND (1)
a
08/08/21 13:55:35 61SNR030_240_0040
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Î(#') ’07-09 models
24-44SRS
Circuit Diagram (cont’d)
GRN
BLU YEL
124 Q
E
G504
G602
BLK
LT GRN*
BLK*
BLK*
ORN*
LT BLU*
WHT*
RED* BLU*RED*
YEL*
2 1
G506 5
22
23 13 BLU
MICURED
2
4 MICU
GRY
YEL
3
1
17 Vs
Vo
Vs
Vo
Vs
Vo
Vs
Vo BLU
BRN
5
10 15
GRY
123 3
21
LT GRN
16
11 6
GRY
BLU
GRN RED
4
914
WHT
123
321
BLK
13
83
RED
BRN MAIN CIRCUIT
VB
VA
WHT
GAUGE CONTROL MODULE (TACH)
BLK
412 SRS UNIT
ODS UNIT
7112 No. 9
(7.5 A) (7.5 A)
No. 10
No. 11
(10 A)
8
9 41
BRN
BLK
YEL
BLU GRN J
BATTERY
BAT
IG1
IGNITION SWITCH
UNDER-DASH FUSE/RELAY BOX
BLK
GRN
WHT BRN
A17
DRIVE CIRCUIT DRIVE CIRCUIT
F-CAN TRANSCEIVER
16 1 19
WHT RED
A
A6
24
ORN
LT BLU
A
11 12
17 18
UNDER-HOOD
FUSE/RELAY BOX
DATA LINK
CONNECTOR
(DLC)
JUNCTION
CONNECTOR
JUNCTION
CONNECTOR
SEAT BELT
REMINDER
INDICATOR
SIDE
AIRBAG
CUTOFF
INDICATOR
SRS
INDICATORJUNCTION
CONNECTOR
To
SRS
UNIT ODS
UNIT
HARNESS OPDS
SENSOR
JUNCTION
CONNECTOR DASHBOARD
WIRE
HARNESS
FRONT
PASSENGER’S
WEIGHT
SENSOR
(FRONT
INNER
SIDE) FRONT
PASSENGER’S
WEIGHT
SENSOR
(REAR
INNER
SIDE) FRONT
PASSENGER’S
WEIGHT
SENSOR
(FRONT
OUTER
SIDE)FRONT
PASSENGER’S
WEIGHT
SENSOR
(REAR
OUTER
SIDE)
DASHBOARD
WIRE
HARNESS
FLOOR
WIRE
HARNESS
DASHBOARD
WIRE
HARNESS
PASSENGER’S
AIRBAG CUTOFF
INDICATOR
JUNCTION
CONNECTOR
MEMORY
ERASE
SIGNAL
(MES)
CONNECTOR
(2P)
FRONT
PASSENGER’S
SEAT
WIRE
HARNESS
(With
seat heater) D 2
JUNCTION
CONNECTOR
2
C782
C783 18P CAN
HI
MES
CAN
LO
K-LINE SCS PTT
SRS
GND (2) SRS
GND (1)
8P
4P
a
08/08/21 13:55:38 61SNR030_240_0044
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DYNOMITE -2009-

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DTC 11-1x (‘‘x’’ can be 0 thru 9 or A thru F):
DTC 11-4x (‘‘x’’ can be 0 thru 9 or A thru F):
Special Tools Required
YES
NO
24-48SRS
DTC Troubleshooting
A
070AZ-SNAA100 07SAZ-TB4011A
Open in the Driver’s Airbag First Inflator
Open in the Driver’s Airbag Second Inflator
 SRS inflator simulator 07SAZ-TB4011A
 SRS simulator lead J 070AZ-SNAA100
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 driver’s airbag 4P connector (A) from the cable reel.
5. Connect the SRS inflator simulator (2 connectors) and simulator lead J to the cable reel.
Does the SRS indicator stay on, and is DT C 11-1xor 11-4x i nd i cat ed ?
08/08/21 13:55:40 61SNR030_240_0048
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DYNOMITE -2009-


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YES
NO
YES
NO
YES
NO
24-49
070AZ-SNAA100
07SAZ-TB4011A
A DASHBOARD WIRE HARNESS
4P CONNECTOR
070AZ-SNAA100
6. Reconnect the negative cable to the battery.
7. Clear the DTC memory.
8. Read the DTC (see page 24-22).Go to step 9.
Open in the driver’s airbag first or second
inflator; replace the driver’s airbag (see page
24-188), 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. Remove the column cover (see page 17-9), then disconnect the dashboard wire harness 4P
connector (A) from the cable reel.
11. Connect the SRS inflator simulator (2 connectors) and the simulator lead to the
dashboard wire harness.
12. Reconnect the negative cable to the battery.
13. Clear the DTC memory. 14. Read the DTC.
Go to step 15.
Open in the cable reel; replace the cable reel
(see page 24-200), then clear the DTC.
15. Turn the ignition switch to LOCK (0). Disconnect the negative cable from the battery, then wait at least 3
minutes.
16. Disconnect SRS unit connector A (28P) from the SRS unit (see step 9 on page 24-21).
17. Disconnect the SRS inflator simulator from the SRS simulator lead. Do not disconnect the simulator
lead from the dashboard wire harness 4P connector.
18. Measure the resistance between the terminals of both SRS simulator leads. There should be less
than 1.0 .
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 page 24-203).
Open in the dashboard wire harness; replace
the dashboard wire harness, then clear the DTC.
I s DT C 11-1x or 11-4x i nd i cat ed ? I s DT C 11-1x or 11-4x i nd i cat ed ?
Is the resistance as specif ied?
08/08/21 13:55:40 61SNR030_240_0049
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DYNOMITE -2009-

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DTC 11-3x (‘‘x’’ can be 0 thru 9 or A thru F):
DTC 11-6x (‘‘x’’ can be 0 thru 9 or A thru F):
Special Tools Required
YES
NO
24-50SRS
DTC Troubleshooting (cont’d)
A
070AZ-SNAA100 07SAZ-TB4011A
Short to Another Wire or Decreased
Resistance in the Driver’s Airbag First Inflator
Short to Another Wire or Decreased
Resistance in the Driver’s Airbag Second
Inflator
 SRS inflator simulator 07SAZ-TB4011A
 SRS simulator lead J 070AZ-SNAA100
 SRS short canceller 070AZ-SAA0100
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 driver’s airbag 4P connector (A) from the cable reel.
5. Connect the SRS inflator simulator (2 connectors) and simulator lead J to the cable reel.
Does the SRS indicator stay on, and is DT C 11-3xor 11-6x indicated?
08/08/21 13:55:40 61SNR030_240_0050
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DYNOMITE -2009-


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YES
NO
YES
NO
YES
NO
24-51
070AZ-SNAA100
07SAZ-TB4011A
A DASHBOARD WIRE HARNESS
4P CONNECTOR
070AZ-SNAA100
6. Reconnect the negative cable to the battery.
7. Clear the DTC memory.
8. Read the DTC (see page 24-22).Go to step 9.
Short in the driver’s airbag first or second
inflator; replace the driver’s airbag (see page
24-188), 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. Remove the column cover (see page 17-9), then disconnect dashboard wire harness 4P connector
(A) from the cable reel.
11. Connect the SRS inflator simulator (2 connectors) and the simulator lead to the
dashboard wire harness.
12. Reconnect the negative cable to the battery.
13. Clear the DTC memory. 14. Read the DTC.
Go to step 15.
Short in the cable reel; replace the cable reel
(see page 24-200), then clear the DTC.
15. Turn the ignition switch to LOCK (0). Disconnect the negative cable from the battery, then wait at least 3
minutes.
16. Disconnect SRS unit connector A (28P) from the SRS unit (see step 9 on page 24-21).
17. Disconnect the SRS inflator simulator from the SRS simulator lead. Do not disconnect the simulator
lead from the dashboard wire harness 4P connector.
18. Connect the SRS short cancellers (070AZ-SAA0100) to SRS unit connector A (28P) terminals No. 7 and
No. 8 and terminals No. 1 and No. 2 (see page
24-18).
19. Measure the resistance between the terminals of both SRS simulator leads. There should be an open
circuitoratleast1M .
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 page 24-203).
Short in the dashboard wire harness; replace
dashboard wire harness, then clear the DTC.
I s DT C 11-3x or 11-6x i nd i cat ed ? I s DT C 11-3x or 11-6x i nd i cat ed ?
Is the resistance as specif ied?
08/08/21 13:55:41 61SNR030_240_0051
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DYNOMITE -2009-

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µ
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DTC 11-8x (‘‘x’’ can be 0 thru 9 or A thru F):
DTC 11-Ax (‘‘x’’ can be 0 thru 9 or A thru F):
Special Tools Required
YES
NO
24-52SRS
DTC Troubleshooting (cont’d)
A
070AZ-SNAA100 07SAZ-TB4011A
Short to Power in the Driver’s Airbag First
Inflator
Short to Power in the Driver’s Airbag Second
Inflator
 SRS inflator simulator 07SAZ-TB4011A
 SRS simulator lead J 070AZ-SNAA100
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 driver’s airbag 4P connector (A) from the cable reel.
5. Connect the SRS inflator simulator (2 connectors) and simulator lead J to the cable reel.
Does the SRS indicator stay on, and is DT C 11-8xor 11-Ax indicated?
08/08/21 13:55:41 61SNR030_240_0052
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DYNOMITE -2009-