Mazda CX-9 Grand Touring 2009 User manual

2008 RESTRAINTS
On-Board Diagnostic (Restraints) - Mazda CX-9
FOREWORD
OUTLINE
The OBD (on-board diagnostic) system has the following functions:
Malfunction detection function: Detects malfunctions in the air bag system and outputs DTCs.
Data monitor function: Reads out specific input/output signals and the system status.
Diagnostic DTCs can be read/cleared using the M-MDS.
FLOWCHART
Use the following flowchart to verify the cause of the trouble.
NOTE: While performing the inspection of the past malfunction code, the
applicable DTCs may be added to memory by removing or disconnecting
the related parts. Inspect only the DTCs that were indicated before
inspecting.
When DTCs of the present malfunction are no longer output after present
or past malfunctions or both have been repaired, be sure to perform past
malfunction display cancellation to prevent repair of malfunctions that
have already been repaired.
2008 Mazda CX-9 Grand Touring
2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9
2008 Mazda CX-9 Grand Touring
2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9
Microsoft
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AIR BAG SYSTEM WIRING DIAGRAM (ON-BOARD DIAGNOSTIC)
Fig. 1: Flow Chart
Courtesy of MAZDA MOTORS CORP.
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Fig. 2: Air Bag System Wiring Diagram
Courtesy of MAZDA MOTORS CORP.
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DTC DISPLAY
1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
When using the IDS (laptop PC)
1. Select "Self Test".
2. Select "Modules".
3. Select "RCM".
When using the PDS (Pocket PC)
1. Select "Module Tests".
2. Select "RCM".
3. Select "Self Test".
Fig. 3: Identifying DLC-2 Connector
Courtesy of MAZDA MOTORS CORP.
3. Verify the DTC according to the directions on the screen.
If any DTCs are displayed, perform troubleshooting according to the corresponding DTC
inspection.
4. After completion of repairs, clear all DTCs stored in the SAS control module. (See CLEARING DTC.)
CLEARING DTC
1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
When using the IDS (laptop PC)
1. Select "Self Test".
2. Select "Modules".
3. Select "RCM".
When using the PDS (Pocket PC)
1. Select "Module Tests".
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2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9
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2. Select "RCM".
3. Select "Self Test".
3. Verify the DTC according to the directions on the screen.
4. Press the clear button on the DTC screen to clear the DTC.
5. Verify that no DTCs are displayed.
Fig. 4: Identifying DLC-2 Connector
Courtesy of MAZDA MOTORS CORP.
DTC TABLE
DTCs are common for present and past malfunction diagnosis.
DTC TABLE
DTC CHART
NOTE: When DTCs not shown in the DTC table are displayed, replace the
SAS control module.
If the air bag system warning light does not illuminate or remains
illuminated when the ignition switch is turned to the ON position,
inspect and repair the air bag system warning light circuit, and then
confirm that the air bag system warning light is operational.
The air bag system warning light flashes the DTC pattern for five
cycles, and then remains illuminated until the ignition switch is
turned to the ACC or LOCK position.
DTC
System malfunction
location Page
M-MDS
display
Air bag system warning light
Flashing pattern Priority
ranking
B1013 16 20 Seat weight sensor
calibration error (See DTC B1013.)
Driver-side curtain air bag
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B1046 24 19 module and other air bag
module circuits short
(See DTC B1046, B2773,
B2774, B2775, B2776.)
B1047 22 17
Driver-side side air bag
module and other air bag
module circuits short
(See DTC B1047, B1992,
B1993, B1994, B1995.)
B1048 21 12
Passenger-side air bag
module (inflator No.1) and
other air bag module circuits
short
(See DTC B1048, B1925,
B1933, B1935, B1938.)
B1049 34 14
Passenger-side pre-tensioner
seat belt and other air bag
module circuits short
(See DTC B1049, B1881,
B1882, B1883, B1886.)
B104B 43 8
Driver-side side air bag
sensor No. 1 and other
sensor circuits short to
power supply
(See DTC B104B, B104E,
B1051, U2017.)
B104C 44 7
Passenger-side side air bag
sensor No.1 and other sensor
circuits short to power
supply
(See DTC B104C, B104F,
B1050, U2018.)
B104D 42 11
Crash zone sensor and other
sensor circuits short to
power supply
(See DTC B104B, B104E,
B1051, U2017.)
B104E 43 8
Driver-side side air bag
sensor No.1 circuit open or
short
(See DTC B104B, B104E,
B1051, U2017.)
B104F
44 7
Passenger-side side air bag
sensor No.1 (internal circuit
abnormal) (See DTC B104C, B104F,
B1050, U2018.)
B1050
Passenger-side side air bag
sensor No.1 circuit open or
short
B1051 43 8
Driver-side side air bag
sensor No.1 (internal circuit
abnormal)
(See DTC B104B, B104E,
B1051, U2017.)
B1054 33 15
Driver-side pre-tensioner
seat belt and other air bag
module circuits short
(See DTC B1054, B1877,
B1878, B1879, B1885.)
B1055 23 16
Passenger-side side air bag
module and other air bag
module circuits short
(See DTC B1055, B1996,
B1997, B1998, B1999.)
B1056 25 18
Passenger-side curtain air
b
ag module and other air bag
module circuits short
(See DTC B1056, B2777,
B2778, B2779, B2780.)
Driver-side air bag module (See DTC B1057, B1916,
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B1057
19 13
(inflator No.1) and other air
bag module circuits short
B1932, B1934, B1936.)
B1058
Driver-side air bag module
(inflator No.2) and other air
bag module circuits short
(See DTC B1058, B2228,
B2230, B2232, B2234.)
B1059 21 12
Passenger-side air bag
module (inflator No.2) and
other air bag module circuits
short
(See DTC B1059, B2229,
B2231, B2233, B2235.)
B105A -Continuously
illuminated 1
SAS control module
activation (deployment)
control frequency error
(See DTC B105A.)
B105B 46 10
Driver-side side air bag
sensor No. 2 and other
sensor circuits short to
power supply
(See DTC B105B, B110C,
B1144, B1145.)
B105F 47 9
Passenger-side side air bag
sensor No. 2 and other
sensor circuits short to
power supply
(See DTC B105F, B110D,
B1146, B1147.)
B110C 46 10
Driver-side side air bag
sensor No. 2 circuit open or
short
(See DTC B105B, B110C,
B1144, B1145.)
B110D 47 9
Passenger-side side air bag
sensor No. 2 circuit open or
short
(See DTC B105F, B110D,
B1146, B1147.)
B110E 46 10 Driver-side side air bag
sensor No.2 ID mismatch (See DTC B110E, B110F,
B2856, B2886, B2887.)
B110F 47 9 Passenger-side side air bag
sensor No.2 ID mismatch
B1144
46 10
Driver-side side air bag
sensor No. 2 (internal circuit
abnormal) (See DTC B105B, B110C,
B1144, B1145.)
B1145
Driver-side side air bag
sensor No. 2
(communication error)
B1146
47 9
Passenger-side side air bag
sensor No. 2 (internal circuit
abnormal) (See DTC B105F, B110D,
B1146, B1147.)
B1147
Passenger-side side air bag
sensor No. 2
(communication error)
B1231 13 3
SAS control module
activation (deployment)
control freeze
(See DTC B1231.)
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B1317
-Continuously
illuminated 1
SAS control module power
supply voltage increases
(18.1 V or more) (See DTC B1317, B1318.)
B1318
SAS control module power
supply voltage decreases
(less than 8 V)
B1342
12 2 SAS control module
(internal circuit abnormal) (See DTC B1342, B1921.)
-Continuously
illuminated 1
B1868 - - 1 Air bag system warning light
malfunction (See DTC B1868.)
B1877
33 15
Driver-side pre-tensioner
seat belt circuit resistance
high
(See DTC B1054, B1877,
B1878, B1879, B1885.)
B1878
Driver-side pre-tensioner
seat belt circuit short to
power supply
B1879
Driver-side pre-tensioner
seat belt circuit short to body
ground
B1881
34 14
Passenger-side pre-tensioner
seat belt circuit resistance
high
(See DTC B1049, B1881,
B1882, B1883, B1886.)
B1882
Passenger-side pre-tensioner
seat belt circuit short to
power supply
B1883
Passenger-side pre-tensioner
seat belt circuit short to body
ground
B1884 18 21
Passenger air bag
deactivation (PAD) indicator
circuit open or short to body
ground
(See DTC B1884, B1890.)
B1885 33 15
Driver-side pre-tensioner
seat belt circuit resistance
low
(See DTC B1054, B1877,
B1878, B1879, B1885.)
B1886 34 14
Passenger-side pre-tensioner
seat belt circuit resistance
low
(See DTC B1049, B1881,
B1882, B1883, B1886.)
B1890 18 21
Passenger air bag
deactivation (PAD) indicator
circuit short to power supply
(See DTC B1884, B1890.)
Driver-side air bag module (See DTC B1057, B1916,
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B1916 19 13 (inflator No.1) circuit short
to power supply
B1932, B1934, B1936.)
B1921 -Continuously
illuminated 1Air bag diagnostic ground circuit open (See DTC B1342, B1921.)
B1925 21 12
Passenger-side air bag
module (inflator No.1)
circuit short to power supply
(See DTC B1048, B1925,
B1933, B1935, B1938.)
B1932 19 13
Driver-side air bag module
(inflator No.1) circuit
resistance high
(See DTC B1057, B1916,
B1932, B1934, B1936.)
B1933 21 12
Passenger-side air bag
module (inflator No.1)
circuit resistance high
(See DTC B1048, B1925,
B1933, B1935, B1938.)
B1934 19 13
Driver-side air bag module
(inflator No.1) circuit
resistance low
(See DTC B1057, B1916,
B1932, B1934, B1936.)
B1935 21 12
Passenger-side air bag
module (inflator No.1)
circuit resistance low
(See DTC B1048, B1925,
B1933, B1935, B1938.)
B1936 19 13
Driver-side air bag module
(inflator No.1) circuit short
to body ground
(See DTC B1057, B1916,
B1932, B1934, B1936.)
B1938 21 12
Passenger-side air bag
module (inflator No.1)
circuit short to body ground
(See DTC B1048, B1925,
B1933, B1935, B1938.)
B1992
22 17
Driver-side side air bag
module circuit short to
power supply
(See DTC B1047, B1992,
B1993, B1994, B1995.)
B1993
Driver-side side air bag
module circuit short to body
ground
B1994
Driver-side side air bag
module circuit resistance
high
B1995 Driver-side side air bag
module circuit resistance low
B1996
23 16
Passenger-side side air bag
module circuit short to
power supply
(See DTC B1055, B1996,
B1997, B1998, B1999.)
B1997
Passenger-side side air bag
module circuit short to body
ground
B1998
Passenger-side side air bag
module circuit resistance
high
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B1999 Passenger-side side air bag
module circuit resistance low
B2226
42 11
Crash zone sensor (internal
circuit abnormal) (See DTC B104D, B2226,
B2227, B2855.)
B2227 Crash zone sensor
(communication error)
B2228 19 13
Driver-side air bag module
(inflator No.2) circuit short
to body ground
(See DTC B1058, B2228,
B2230, B2232, B2234.)
B2229 21 12
Passenger-side air bag
module (inflator No.2)
circuit short to body ground
(See DTC B1059, B2229,
B2231, B2233, B2235.)
B2230 19 13
Driver-side air bag module
(inflator No.2) circuit short
to power supply
(See DTC B1058, B2228,
B2230, B2232, B2234.)
B2231 21 12
Passenger-side air bag
module (inflator No.2)
circuit short to power supply
(See DTC B1059, B2229,
B2231, B2233, B2235.)
B2232 19 13
Driver-side air bag module
(inflator No.2) circuit
resistance high
(See DTC B1058, B2228,
B2230, B2232, B2234.)
B2233 21 12
Passenger-side air bag
module (inflator No.2)
circuit resistance high
(See DTC B1059, B2229,
B2231, B2233, B2235.)
B2234 19 13
Driver-side air bag module
(inflator No.2) circuit
resistance low
(See DTC B1058, B2228,
B2230, B2232, B2234.)
B2235 21 12
Passenger-side air bag
module (inflator No.2)
circuit resistance low
(See DTC B1059, B2229,
B2231, B2233, B2235.)
B2290 16 20 Seat weight sensor signal
malfunction (See DTC B2290.)
B2477 54 6 Configuration error (See DTC B2477.)
B2773
24 19
Driver-side curtain air bag
module circuit resistance low
(See DTC B1046, B2773,
B2774, B2775, B2776.)
B2774
Driver-side curtain air bag
module circuit resistance
high
B2775
Driver-side curtain air bag
module circuit short to body
ground
B2776
Driver-side curtain air bag
module circuit short to
power supply
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B2777
25 18
Passenger-side curtain air
b
ag module circuit resistance
low
(See DTC B1056, B2777,
B2778, B2779, B2780.)
B2778
Passenger-side curtain air
b
ag module circuit resistance
high
B2779
Passenger-side curtain air
bag module circuit short to
body ground
B2780
Passenger-side curtain air
bag module circuit short to
power supply
B2855
42 11
Crash zone sensor circuit
short
(See DTC B104D, B2226,
B2227, B2855.)
B2856 Crash zone sensor ID
mismatch
(See DTC B110E, B110F,
B2856, B2886, B2887.)
B2886 44 7 Passenger-side side air bag
sensor No.1 ID mismatch
B2887 43 8 Driver-side side air bag
sensor No.1 ID mismatch
C1946
49 22
Seat track position sensor
circuit open
(See DTC C1946, C1947,
C1948, C1981, C1982.)
C1947 Seat track position sensor
circuit short to body ground
C1948
Seat track position sensor
circuit resistance not within
specification
C1981 Seat track position sensor
circuit malfunction
C1982 Seat track position sensor
circuit short to power supply
U2017 43 8
Driver-side side air bag
sensor No. 1
(communication error)
(See DTC B104B, B104E,
B1051, U2017.)
U2018 44 7
Passenger-side side air bag
sensor No. 1
(communication error)
(See DTC B104C, B104F,
B1050, U2018.)
U0073 14 4 CAN system communication
error (See DTC TABLE
[MULTIPLEX
COMMUNICATION
SYSTEM] .)
U0100
- - 1
Communication error to
PCM
U0155 Communication error to
instrument cluster
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PID/DATA MONITOR DISPLAY
1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
When using the IDS (laptop PC)
1. Select "DataLogger".
2. Select "Modules".
3. Select "RCM".
Fig. 5: Identifying DLC-2 Connector
Courtesy of MAZDA MOTORS CORP.
When using the PDS (Pocket PC)
1. Select "Module Tests".
2. Select "RCM".
3. Select "DataLogger".
3. Select the applicable PID from the PID table.
4. Verify the PID data according to the directions on the screen.
PID/DATA MONITOR TABLE
PID/DATA MONITOR CHART
NOTE: The PID data screen function is used for monitoring the calculated
value of input/output signals in the module. Therefore, if the
monitored value of the output parts is not within the specification, it
is necessary to inspect the monitored value of input parts
corresponding to the applicable output part control. In addition,
because the system does not display an output part malfunction as
an abnormality in the monitored value, it is necessary to inspect the
output parts individually.
PID name Unit/Condition Operation Condition Terminal
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(definition) (Reference)
BUCKLE_D
(Driver-side buckle
switch status)
Unbuckled/Buckled
Driver-side buckle
switch off:
Buckled
Driver-side buckle
switch on:
Unbuckled
2W
BUCKLE_P
(Passenger-side
buckle switch
status)
Unbuckled/Buckled
Passenger-side
buckle switch off:
Buckled
Passenger-side
buckle switch on:
Unbuckled
2C
CCNT_RCM
(Number of
continuous DTCs)
-Indicates number of
DTC -
CRSH_RC
(Number of
detected collisions)
-Indicates number of
detected collisions -
DTC_CLR_ST(1)
(OCS DTC cleared
state)
Starting/Normal End/In Process/OCS Fault
Fault information
cleared at seat weight
sensor
2AJ
IGN_V (IG1
voltage) VIgnition switch is at ON: B+ 1D
OCS_CAL_ST(2)
(Seat weight
sensor calibration
status)
Starting/Normal End/Commanding/NG
(Voltage)/ NG (Weight)/ Timeout/In
Process/OCS Fault
Seat weight sensor
calibration start-
up: Starting
Seat weight sensor
calibration
completed
normally: Normal
End
Seat weight sensor
calibration
command being
sent: Commanding
Voltage
malfunction
during seat weight
sensor calibration:
NG (Voltage)
Weight error
during seat weight
2AJ
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sensor calibration:
NG (Weight)
Seat weight sensor
calibration time
limit passed:
Timeout
Seat weight sensor
calibration being
processed: In
Process
Seat weight sensor
or Seat weight
sensor control
module
malfunction: OCS
Fault
OCS_SYS_ST(1)
(Seat weight
sensor status)
Empty/SMALL/Indeterminate/LARGE/Invalid
Occupant classification
status determined by seat
weight sensor
2AJ
OCSFLT_CAL
(Passenger sensing
system calibration
status)
OK/FAULT
Sensor normal:
OK
Seat weight sensor
calibration error:
FAULT
2AJ
OCSFLT_COM
(Passenger sensing
system
communication
status)
OK/FAULT
Sensor normal:
OK
Seat weight sensor
control module
communication
error: FAULT
2AJ
OCSFLT_L
(Passenger sensing
system (LH)
malfunction status)
OK/FAULT
Sensor normal:
OK
Seat weight sensor
(LH) malfunction:
FAULT
2AJ
OCSFLT_MDL
(Passenger sensing
system control
module
malfunction status)
OK/FAULT
Sensor normal:
OK
Seat weight sensor
control module
malfunction:
FAULT
2AJ
OCSFLT_R
Sensor normal:
OK
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(Passenger sensing
system (RH)
malfunction status)
OK/FAULT
Seat weight sensor
(RH) malfunction:
FAULT
2AJ
PS_WEIGHT
(Seat weight
sensor measured
weight of
passenger)
kg
Display of load (body
weight) on front
passenger-side seat
2AJ
PSAB_DepSt
(Passenger-side air
bag module
deployment status)
Inactive/Active
Passenger-side air
bag module non-
operation (non-
deployment)
status: Inactive
Passenger-side air
bag module
operation
(deployment)
enabled status:
Active
2AJ
RES_AB_D
(Driver-side air
bag module
(inflator No.1)
resistance)
ohm Under any condition:
1.5-9.7 ohms 11,1M
RES_AB_P
(Passenger-side air
bag module
(inflator No.1)
resistance)
ohm Under any condition:
1.0-9.7 ohms U, 1N
RES_AB2_D
(Driver-side air
bag module
(inflator No.2)
resistance)
ohm Under any condition:
1.5-9.7 ohms 1Q, 1U
RES_AB2_P
(Passenger-side air
bag module
(inflator No.2)
resistance)
ohm Under any condition:
1.0-9.7 ohms 1R, 1V
RES_CAB_D
(Driver-side
curtain air bag
module resistance)
ohm Under any condition:
1.0-9.7 ohms
2AG,
2AK
RES_CAB_P
(Passenger-side
ohm
Under any condition: 2AH,
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DTC B1013
DTC B1013 DETECTION CONDITION AND POSSIBLE CAUSE
curtain air bag
module resistance)
1.0-9.7 ohms 2AL
RES_PT_D
(Driver-side pre-
tensioner seat belt
resistance)
ohm Under any condition:
1.0-9.7 ohms 2N, 2J
RES_PT_P
(Passenger-side
pre-tensioner seat
belt resistance)
ohm Under any condition:
1.0-9.7 ohms 2A, 2E
RES_SAB_D
(Driver-side side
air bag module
resistance)
ohm Under any condition:
1.0-9.7 ohms 2B, 2F
RES_SAB_P
Passenger-side side
air bag module
resistance)
ohm Under any condition:
1.0-9.7 ohms 21, 2M
TRAK_SW Seat
track position
sensor state)
Forward/Rearward
Front seat front
position: Forward
Front seat rear
position:
Rearward
2AB,
2AF
(1) Used during seat weight sensor calibration setting. Not necessary for diagnostic.
(2) When the calibration error is displayed, the error can be cleared by turning the ignition switch to the
LOCK position.
DTC B1013 Seat weight sensor calibration error
DETECTION
CONDITION
Calibration set value not within valid range.
WARNING:
Detection conditions are for understanding the DTC outline before
performing an inspection. Performing an inspection according to only the
detection conditions may cause injury due to an operating error, or damage
the system. When performing an inspection, always follow the inspection
procedure.
POSSIBLE
Weight acting on front passenger-side seat during calibration
Improperly installed front passenger-side seat part at time of calibration
Deformed floor where attached to front passenger-side seat
Deformed front passenger-side seat under-bracket or frame
2008 Mazda CX-9 Grand Touring
2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:18:46 AM Page 16 © 2005 Mitchell Repair Information Company, LLC.

DIAGNOSTIC PROCEDURE
DTC B1013 DIAGNOSTIC PROCEDURE
CAUSE Seat weight sensor deformed or malfunction
Seat weight sensor control module malfunction
SAS control module malfunction
Load to or deformation of the seat belt rail
STEP INSPECTION ACTION
1
INSPECT SEAT WEIGHT
SENSOR
Properly install the
passenger-side front seat.
Inspect the seat weight
sensor. (See SEAT
WEIGHT SENSOR
CALIBRATION .)
Is the seat weight sensor
normal?
Yes
[Present malfunction diagnosis]
Replace the SAS control module.
(See SAS CONTROL MODULE
REMOVAL/INSTALLATION .)
[Past malfunction diagnosis]
DTC troubleshooting completed.
No Go to the next step.
2
INSPECT PASSENGER-SIDE
FRONT SEAT
Turn the ignition switch to
the LOCK position.
Disconnect the negative
battery cable and wait for
1 min or more.
Remove the passenger-
side seat and visually
inspect for the following:
Seat under-bracket
deformation
Seat frame
deformation
Seat weight sensor
deformation
Foreign objects
stuck in seat
Are any of the parts
deformed or are any
foreign objects stuck in the
Yes
Replace any deformed parts or remove any foreign objects.
After replacement, perform seat weight sensor
calibration and reperform the DTC inspection. If the
DTC is displayed, go the next step. (See SEAT
WEIGHT SENSOR CALIBRATION .)
No Go to the next step.
2008 Mazda CX-9 Grand Touring
2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:18:46 AM Page 17 © 2005 Mitchell Repair Information Company, LLC.

DTC B1046, B2773, B2774, B2775, B2776
DTC B1046, B2773, B2774, B2775, B2776 DETECTION CONDITION AND POSSIBLE CAUSE
seat?
3
INSPECT FLOOR
Visually inspect the
installation parts of the
front passenger-side seat
for the following:
Abnormal floor
deformation
Installation hole of
front passenger-side
seat is improperly
positioned
Is the floor normal?
Yes Go to the next step.
No
Repair floor deformation.
After repair, perform seat weight sensor calibration
and reperform the DTC inspection. If the DTC is
displayed even though the floor has been repaired, go
the next step. (See SEAT WEIGHT SENSOR
CALIBRATION .)
4
INSPECT SEAT WEIGHT
SENSOR CONTROL
MODULE
Replace the seat weight
sensor.
After replacement,
perform seat weight sensor
calibration. (See SEAT
WEIGHT SENSOR
CALIBRATION .)
Reperform the DTC
inspection.
Is DTC B1013 indicated?
Yes
Replace the seat weight sensor control module. (See SEAT
WEIGHT SENSOR CONTROL MODULE
REMOVAL/INSTALLATION .)
After replacement, perform seat weight sensor
calibration and reperform the DTC inspection. If the
DTC is displayed even though the seat weight sensor
control module has been replaced, replace the SAS
control module. (See SAS CONTROL MODULE
REMOVAL/INSTALLATION .)
No DTC troubleshooting completed.
DTC
B1046 Driver-side curtain air bag module and other air bag module circuits short
B2773 Driver-side curtain air bag module circuit resistance low
B2774 Driver-side curtain air bag module circuit resistance high
B2775 Driver-side curtain air bag module circuit short to body ground
B2776 Driver-side curtain air bag module circuit short to power supply
DETECTION
CONDITION
WARNING:
Detection conditions are for understanding the DTC outline before performing an
inspection. Performing an inspection according to only the detection conditions
may cause injury due to an operating error, or damage the system. When
performing an inspection, always follow the inspection procedure.
2008 Mazda CX-9 Grand Touring
2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:18:46 AM Page 18 © 2005 Mitchell Repair Information Company, LLC.

DIAGNOSTIC PROCEDURE
DTC B1046, B2773, B2774, B2775, B2776 DIAGNOSTIC PROCEDURE
Resistance other than 1.0-9.7 ohms detected in driver-side curtain air bag module
circuit
Malfunction in wiring harness between driver-side curtain air bag module and SAS
control module
POSSIBLE
CAUSE
Open or short circuit in wiring harness between driver-side curtain air bag module an
d
SAS control module
Driver-side curtain air bag module malfunction
SAS control module malfunction
STEP INSPECTION ACTION
1
INSPECT DRIVER-SIDE CURTAIN AIR BAG
MODULE
Using the M-MDS, verify the following
PID/DATA monitor.
(See PID/DATA MONITOR TABLE.)
RES_CAB_D
Is the resistance of the driver-side curtain air
bag module normal?
Resistance: 1.0-9.7 ohms
Yes
Replace the SAS control module. (See
SAS CONTROL MODULE
REMOVAL/INSTALLATION .)
No Go to the next step.
INSPECT DRIVER-SIDE CURTAIN AIR BAG
MODULE CONNECTOR
WARNING:
2008 Mazda CX-9 Grand Touring
2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:18:46 AM Page 19 © 2005 Mitchell Repair Information Company, LLC.

2
Turn the ignition switch to the LOCK position.
Disconnect the negative battery cable and wait
for 1 min or more.
Disconnect the driver-side curtain air bag
module connector. (See CURTAIN AIR BAG
MODULE REMOVAL/INSTALLATION .)
Is there any malfunction of the driver-side
curtain air bag module connector?
Handling the air bag system components
improperly can accidentally deploy the air
bag modules and pre-tensioner seat belts,
which may seriously injure you. Read the
service warnings and cautions before
handling the air bag system components.
(See AIR BAG SYSTEM SERVICE
WARNINGS .)
(See AIR BAG SYSTEM SERVICE
CAUTIONS .)
Yes Replace the air bag wiring harness.
No Go to the next step.
3
VERIFY WHETHER MALFUNCTION IS IN
DRIVER-SIDE CURTAIN AIR BAG MODULE
OR RELATED WIRING HARNESS
Connect the leads of the SST (Fuel and
thermometer checker) or apply 2-ohm
resistance to driver-side curtain air bag module
connector terminals A and B.
Set the resistance of the SST (Fuel and
thermometer checker) to the 2-ohm position.
Connect the negative battery cable.
Turn the ignition switch to the ON position.
Are DTCs B1046, B2773, B2774, B2775
and/or B2776 indicated?
Yes Go to the next step.
No
Replace the driver-side curtain air bag
module. (See CURTAIN AIR BAG
MODULE
REMOVAL/INSTALLATION .)
INSPECT WIRING HARNESS BETWEEN
DRIVER-SIDE CURTAIN AIR BAG MODULE
AND SAS CONTROL MODULE
Turn the ignition switch to the LOCK position.
Disconnect the negative battery cable and wait
for 1 min or more .
Remove the column cover. (See COLUMN
COVER REMOVAL/INSTALLATION .)
2008 Mazda CX-9 Grand Touring
2008 RESTRAINTS On-Board Diagnostic (Restraints) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:18:46 AM Page 20 © 2005 Mitchell Repair Information Company, LLC.