Mazda 3 Workshop Manual - RESTRAINTS + DTC
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Mazda 3 Workshop Manual –
RESTRAINTS + DTC
Contents
Mazda 3 Workshop Manual – RESTRAINTS + DTC ........................................................................................ 1
ON-BOARD DIAGNOSTIC ............................................................................................................................... 5
FOREWORD ............................................................................................................................................... 5
Outline ...................................................................................................................................................... 5
AIR BAG SYSTEM WIRING DIAGRAM (ON-BOARD DIAGNOSTIC) .............................................. 5
DTC DISPLAY ............................................................................................................................................. 6
CLEARING DTC ......................................................................................................................................... 7
DTC TABLE ................................................................................................................................................. 7
PID/DATA MONITOR DISPLAY ............................................................................................................ 11
PID/DATA MONITOR TABLE ................................................................................................................. 11
DTC B1046, B2773, B2774, B2775, B2776 ......................................................................................... 13
DTC B1047, B1992, B1993, B1994, B1995 ......................................................................................... 15
DTC B1048, B1925, B1933, B1935, B1938 ......................................................................................... 17
DTC B1049, B1881, B1882, B1883, B1886 ......................................................................................... 19
DTC B104B, B104E, B1051, U2017 ...................................................................................................... 21
DTC B104C, B104F, B1050, U2018 ...................................................................................................... 23
DTC B104D, B2226, B2227, B2855 ...................................................................................................... 25
DTC B1053, B2432, B2433, B2434, B2435 ......................................................................................... 28
DTC B1054, B1877, B1878, B1879, B1885 ......................................................................................... 30
DTC B1055, B1996, B1997, B1998, B1999 ......................................................................................... 32
DTC B1056, B2777, B2778, B2779, B2780 ......................................................................................... 34
DTC B1057, B1916, B1932, B1934, B1936 ......................................................................................... 36
DTC B1058, B2228, B2230, B2232, B2234 ......................................................................................... 39
DTC B1059, B2229, B2231, B2233, B2235 ......................................................................................... 41
DTC B105A ............................................................................................................................................... 43
DTC B1231 ................................................................................................................................................ 44
DTC B1317, B1318 .................................................................................................................................. 44
DTC B1342 ................................................................................................................................................ 46
DTC B1884, B1890 .................................................................................................................................. 47
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DTC B1921 ................................................................................................................................................ 49
DTC B2477 ................................................................................................................................................ 49
DTC B2856, B2886, B2887 .................................................................................................................... 50
SYMPTOM TROUBLESHOOTING .................................................................................................................. 51
AIR BAG SYSTEM ................................................................................................................................... 51
Troubleshooting Index ......................................................................................................................... 51
NO.1 AIR BAG SYSTEM WARNING LIGHT DOES NOT ILLUMINATE ......................................... 51
Diagnostic Procedure ........................................................................................................................... 52
NO.2 AIR BAG SYSTEM WARNING LIGHT ILLUMINATES CONSTANTLY ................................ 52
Diagnostic Procedure ........................................................................................................................... 52
AIR BAG SYSTEM.......................................................................................................................................... 53
LOCATION INDEX ................................................................................................................................... 53
SERVICE WARNINGS ............................................................................................................................ 55
Air Bag Module Inspection .................................................................................................................. 55
Air Bag Module Handling ..................................................................................................................... 55
Side Air Bag Module Handling............................................................................................................ 56
SAS Control Module Handling ............................................................................................................ 56
Crash Zone Sensor Handling ............................................................................................................. 57
Side Air Bag Sensor Handling ............................................................................................................ 57
Pre-tensioner Front Buckle Inspection .............................................................................................. 57
SERVICE CAUTIONS ............................................................................................................................. 58
Air Bag System Component Disassembly ........................................................................................ 58
Air Bag Module, Pre-tensioner Front Buckle Handling ................................................................... 58
Air Bag Module, Pre-tensioner Front Buckle Reuse ....................................................................... 58
Air Bag Wiring Harness Repair .......................................................................................................... 58
DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION...................................................... 59
Connector Removal Note .................................................................................................................... 60
PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION ............................................ 60
SIDE AIR BAG MODULE REMOVAL/INSTALLATION ...................................................................... 61
Connector Removal Note .................................................................................................................... 62
CURTAIN AIR BAG MODULE REMOVAL/INSTALLATION ............................................................. 62
CRASH ZONE SENSOR REMOVAL/INSTALLATION....................................................................... 64
SAS CONTROL MODULE REMOVAL/INSTALLATION .................................................................... 65
SAS CONTROL MODULE CONFIGURATION ................................................................................... 66
SIDE AIR BAG SENSOR REMOVAL/INSTALLATION ...................................................................... 67
CLOCK SPRING REMOVAL/INSTALLATION..................................................................................... 68
Clock Spring Installation Note ............................................................................................................ 69
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Steering Angle Sensor Installation Note ........................................................................................... 69
CLOCK SPRING ADJUSTMENT ........................................................................................................... 69
CLOCK SPRING INSPECTION ............................................................................................................. 70
PASSENGER AIR BAG DEACTIVATION (PAD) SWITCH REMOVAL/INSTALLATION ............. 71
PASSENGER AIR BAG DEACTIVATION (PAD) SWITCH INSPECTION ...................................... 72
AIR BAG MODULE AND PRE-TENSIONER FRONT BUCKLE DEPLOYMENT PROCEDURES
..................................................................................................................................................................... 73
Deployment Procedure for Inside of Vehicle .................................................................................... 73
Driver-side air bag module .................................................................................................................. 73
Passenger-side air bag module.......................................................................................................... 75
Side air bag module and pre-tensioner front buckle ....................................................................... 76
Curtain air bag module ........................................................................................................................ 77
Deployment Procedure for Outside of Vehicle ................................................................................. 78
Driver-side air bag module .................................................................................................................. 79
Passenger-side air bag module.......................................................................................................... 81
Side air bag module ............................................................................................................................. 83
Curtain air bag module ........................................................................................................................ 86
Pre-tensioner front buckle ................................................................................................................... 88
AIR BAG MODULE AND PRE-TENSIONER FRONT BUCKLE DISPOSAL PROCEDURES ..... 90
INSPECTION OF SST (DEPLOYMENT TOOL) .................................................................................. 91
Inspection Procedure ........................................................................................................................... 91
SEAT BELT .................................................................................................................................................... 92
LOCATION INDEX ................................................................................................................................... 92
FRONT SEAT BELT REMOVAL/INSTALLATION .............................................................................. 94
REAR SEAT BELT REMOVAL/INSTALLATION ................................................................................. 94
4SD ......................................................................................................................................................... 95
5HB ......................................................................................................................................................... 95
REAR CENTER SEAT BELT REMOVAL/INSTALLATION ............................................................... 96
4SD ......................................................................................................................................................... 96
5HB ......................................................................................................................................................... 97
FRONT BUCKLE REMOVAL/INSTALLATION .................................................................................... 97
REAR BUCKLE REMOVAL/INSTALLATION ...................................................................................... 99
SEAT BELT INSPECTION ...................................................................................................................... 99
Belt .......................................................................................................................................................... 99
ELR ......................................................................................................................................................... 99
ALR ....................................................................................................................................................... 100
Load Limiter Retractor ....................................................................................................................... 100
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CHILD-RESTRAINT SEAT ANCHOR REMOVAL/INSTALLATION ............................................... 101
4SD ....................................................................................................................................................... 101
5HB ....................................................................................................................................................... 101
RESTRAINTS SST ................................................................................................................................. 102
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ON-BOARD DIAGNOSTIC
FOREWORD
B3E080201046W01
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 WDS or equivalent.
AIR BAG SYSTEM WIRING DIAGRAM (ON-BOARD
DIAGNOSTIC)
B3E080201046W02
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CLEARING DTC
B3E080201046W04
1. After repairs have been made, retrieve DTCs.
2. Using the WDS or equivalent, clear DTCs from the memory.
3. Perform the DTC inspection again and verify that no DTC is displayed.
DTC TABLE
B3E080201046W05
DTC
System malfunction location
Page
WDS
display
B1046
Driver-side curtain air bag module and other air bag
module circuits short
(See DTC B1046, B2773, B2774,
B2775, B2776.)
B1047
Driver-side side air bag module and other air bag
module circuits short
(See DTC B1047, B1992, B1993,
B1994, B1995.)
B1048
Passenger-side air bag module (inflator No.1) and other
air bag module circuits short
(See DTC B1048, B1925, B1933,
B1935, B1938.)
B1049
Passenger-side pre-tensioner front buckle and other air
bag module circuits short
(See DTC B1049, B1881, B1882,
B1883, B1886.)
B104B
Driver-side side air bag sensor and other sensor circuits
short to power supply
(See DTC B104B, B104E,
B1051, U2017.)
B104C
Passenger-side side air bag sensor and other sensor
circuits short to power supply
(See DTC B104C, B104F,
B1050, U2018.)
B104D
Crash zone sensor and other sensor circuits short to
power supply
(See DTC B104D, B2226,
B2227, B2855.)
B104E
Driver-side side air bag sensor (internal circuit abnormal)
(See DTC B104B, B104E,
B1051, U2017.)
B104F
Passenger-side side air bag sensor (internal circuit
abnormal)
(See DTC B104C, B104F,
B1050, U2018.)
B1050
Passenger-side side air bag sensor circuit open or short
B1051
Driver-side side air bag sensor circuit open or short
(See DTC B104B, B104E,
B1051, U2017.)
B1053
Driver-side front buckle switch and other sensor circuits
short to power supply
(See DTC B1053, B2432, B2433,
B2434, B2435.)
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B1054
Driver-side pre-tensioner front buckle and other air bag
module circuits short
(See DTC B1054, B1877, B1878,
B1879, B1885.)
B1055
Passenger-side side air bag module and other air bag
module circuits short
(See DTC B1055, B1996, B1997,
B1998, B1999.)
B1056
Passenger-side curtain air bag module and other air bag
module circuits short
(See DTC B1056, B2777, B2778,
B2779, B2780.)
B1057
Driver-side air bag module (inflator No.1) and other air
bag module circuits short
(See DTC B1057, B1916, 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
Passenger-side air bag module (inflator No.2) and other
air bag module circuits short
(See DTC B1059, B2229, B2231,
B2233, B2235.)
B105A
SAS control module activation (deployment) control
frequency error
(See DTC B105A.)
B1231
SAS control module activation (deployment) control
freeze
(See DTC B1231.)
B1317
SAS control module power supply voltage increases
(16.1 V or more)
(See DTC B1317, B1318.)
B1318
SAS control module power supply voltage decreases
(less than 9 V)
B1342
SAS control module
(See DTC B1342.)
B1877
Driver-side pre-tensioner front buckle circuit resistance
high
(See DTC B1054, B1877, B1878,
B1879, B1885.)
B1878
Driver-side pre-tensioner front buckle circuit short to
power supply
B1879
Driver-side pre-tensioner front buckle circuit short to
body ground
B1881
Passenger-side pre-tensioner front buckle circuit
resistance high
(See DTC B1049, B1881, B1882,
B1883, B1886.)
B1882
Passenger-side pre-tensioner front buckle circuit short to
power supply
B1883
Passenger-side pre-tensioner front buckle circuit short to
body ground
B1884
Passenger air bag deactivation (PAD) indicator circuit
open or short to body ground
(See DTC B1884, B1890.)
B1885
Driver-side pre-tensioner front buckle circuit resistance
low
(See DTC B1054, B1877, B1878,
B1879, B1885.)
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B1886
Passenger-side pre-tensioner front buckle circuit
resistance low
(See DTC B1049, B1881, B1882,
B1883, B1886.)
B1890
Passenger air bag deactivation (PAD) indicator circuit
short to power supply
(See DTC B1884, B1890.)
B1916
Driver-side air bag module (inflator No.1) circuit short to
power supply
(See DTC B1057, B1916, B1932,
B1934, B1936.)
B1921
Air bag diagnostic monitor ground circuit open
(See DTC B1921.)
B1925
Passenger-side air bag module (inflator No.1) circuit
short to power supply
(See DTC B1048, B1925, B1933,
B1935, B1938.)
B1932
Driver-side air bag module (inflator No.1) circuit
resistance high
(See DTC B1057, B1916, B1932,
B1934, B1936.)
B1933
Passenger-side air bag module (inflator No.1) circuit
resistance high
(See DTC B1048, B1925, B1933,
B1935, B1938.)
B1934
Driver-side air bag module (inflator No.1) circuit
resistance low
(See DTC B1057, B1916, B1932,
B1934, B1936.)
B1935
Passenger-side air bag module (inflator No.1) circuit
resistance low
(See DTC B1048, B1925, B1933,
B1935, B1938.)
B1936
Driver-side air bag module (inflator No.1) circuit short to
body ground
(See DTC B1057, B1916, B1932,
B1934, B1936.)
B1938
Passenger-side air bag module (inflator No.1) circuit
short to body ground
(See DTC B1048, B1925, B1933,
B1935, B1938.)
B1992
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
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
B1999
Passenger-side side air bag module circuit resistance
low
B2226
Crash zone sensor (internal circuit abnormal)
(See DTC B104D, B2226,
B2227, B2855.)
B2227
Crash zone sensor (communication error)
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B2228
Driver-side air bag module (inflator No.2) circuit short to
body ground
(See DTC B1058, B2228, B2230,
B2232, B2234.)
B2229
Passenger-side air bag module (inflator No.2) circuit
short to body ground
(See DTC B1059, B2229, B2231,
B2233, B2235.)
B2230
Driver-side air bag module (inflator No.2) circuit short to
power supply
(See DTC B1058, B2228, B2230,
B2232, B2234.)
B2231
Passenger-side air bag module (inflator No.2) circuit
short to power supply
(See DTC B1059, B2229, B2231,
B2233, B2235.)
B2232
Driver-side air bag module (inflator No.2) circuit
resistance high
(See DTC B1058, B2228, B2230,
B2232, B2234.)
B2233
Passenger-side air bag module (inflator No.2) circuit
resistance high
(See DTC B1059, B2229, B2231,
B2233, B2235.)
B2234
Driver-side air bag module (inflator No.2) circuit
resistance low
(See DTC B1058, B2228, B2230,
B2232, B2234.)
B2235
Passenger-side air bag module (inflator No.2) circuit
resistance low
(See DTC B1059, B2229, B2231,
B2233, B2235.)
B2432
Driver-side front buckle switch circuit open
(See DTC B1053, B2432, B2433,
B2434, B2435.)
B2433
Driver-side front buckle switch circuit open or short to
power supply
B2434
Driver-side front buckle switch circuit short to body
ground
B2435
Driver-side front buckle switch circuit resistance not
within specification
B2477
Configuration error
(See DTC B2477.)
B2773
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
B2777
Passenger-side curtain air bag module circuit resistance
low
(See DTC B1056, B2777, B2778,
B2779, B2780.)
B2778
Passenger-side curtain air bag module circuit resistance
high
B2779
Passenger-side curtain air bag module circuit short to
body ground
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B2780
Passenger-side curtain air bag module circuit short to
power supply
B2855
Crash zone sensor circuit short
(See DTC B104D, B2226,
B2227, B2855.)
B2856
Crash zone sensor ID mismatch
(See DTC B2856, B2886,
B2887.)
B2886
Passenger-side side air bag sensor ID mismatch
B2887
Driver-side side air bag sensor ID mismatch
U2017
Driver-side side air bag sensor (communication error)
(See DTC B104B, B104E,
B1051, U2017.)
U2018
Passenger-side side air bag sensor (communication
error)
(See DTC B104C, B104F,
B1050, U2018.)
PID/DATA MONITOR DISPLAY
B3E080201046W06
1. Connect the WDS or equivalent to the DLC-2 connector (16-pin).
2. Display the data monitor items.
PID/DATA MONITOR TABLE
B3E080201046W07
PID name (definition)
Unit/Condition
Operation Condition
(Reference)
Terminal
CCNT_RCM
(Number of continuous DTCs)
• DTCs detected: 1-255
• No DTCs detected: 0
D_ABAGR2
(Driver-side air bag module (inflator
No.2) resistance)
Ohms
Under any condition: 1.5-3.7
ohms
1U, 1Q
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DABAGR
(Driver-side air bag module (inflator
No.1) resistance)
Ohms
Under any condition: 1.5-3.7
ohms
1I, 1M
DFCURTRES
(Driver-side curtain air bag module
resistance)
Ohms
Under any condition: 1.4-3.2
ohms
2AG,
2AK
DR_BUKL
(Driver-side buckle switch status)
Buckled/Unbuckled
• Driver-side buckle switch on:
Buckled
• Driver-side buckle switch off:
Unbuckled
2W
DR_PTENS
(Driver-side pre-tensioner front
buckle resistance)
Ohms
Under any condition: 1.5-3.1
ohms
2J, 2N
DS_AB
(Driver-side side air bag module
resistance)
Ohms
Under any condition: 1.4-3.2
ohms
2B, 2F
I_PAD_FLT
(PAD switch status)
OK/Fault
• PAD switch normal: OK
• PAD switch abnormal: Fault
1P
I_PAD_SW
(PAD switch status)
ON/OFF
• PAD switch is at PASS AIRBAG
ON position: ON
• PAD switch is at PASS AIRBAG
OFF position: OFF
1P
P_ABAGR2
(Passenger-side air bag module
(inflator No.2) resistance)
Ohms
Under any condition: 1.4-2.9
ohms
1R, 1V
PABAGR
(Passenger-side air bag module
(inflator No.1) resistance)
Ohms
Under any condition: 1.4-2.9
ohms
1J, 1N
PFCURTRES
(Passenger-side curtain air bag
module resistance)
Ohms
Under any condition: 1.4-3.2
ohms
2AH, 2AL
PS_AB
(Passenger-side side air bag module
resistance)
Ohms
Under any condition: 1.4-3.2
ohms
2I, 2M
PS_PTENS
(Passenger-side pre-tensioner front
buckle resistance)
Ohms
Under any condition: 1.5-3.1
ohms
2A, 2E
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VBATTRCM
(SAS control module input voltage)
V
• Ignition switch is at ON: B+
• Other: 0
1D
DTC B1046, B2773, B2774, B2775, B2776
B3E080201046W28
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.
• Resistance other than 1.4-3.2 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 and SAS control module
• Driver-side curtain air bag module malfunction
• SAS control module malfunction
Diagnostic procedure
STEP
INSPECTION
ACTION
1
INSPECT DRIVER-SIDE CURTAIN AIR BAG MODULE
Yes
Replace the SAS control module.
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• Using the WDS or equivalent, verify the following
PID/DATA monitor.
(See PID/DATA MONITOR TABLE.)
- DFCURTRES
• Is the resistance of the driver-side curtain air bag
module normal?
- Resistance: 1.4-3.2 ohms
(See SAS CONTROL MODULE
REMOVAL/INSTALLATION.)
No
Go to the next step.
2
INSPECT DRIVER-SIDE CURTAIN AIR BAG MODULE
CONNECTOR
Warning
• Handling the air bag system components
improperly can accidentally deploy the air bag
modules and pre-tensioner front buckles, which
may seriously injure you. Read the service
warnings and cautions before handling the air
bag system components.
(See SERVICE WARNINGS.)
(See SERVICE CAUTIONS.)
• 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.
• Is there any malfunction of the driver-side curtain air
bag module connector?
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
Replace the air bag wiring
harness, then go to the next step.
No
Replace the driver-side curtain air
bag module.
(See CURTAIN AIR BAG
MODULE
REMOVAL/INSTALLATION.)
4
INSPECT SAS CONTROL MODULE
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1
min or more.
Yes
Replace the SAS control module.
(See SAS CONTROL MODULE
REMOVAL/INSTALLATION.)
No
DTC troubleshooting completed.
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• Connect the driver-side curtain air bag module
connector.
• Are DTCs B1046, B2773, B2774, B2775 and/or B2776
indicated?
DTC B1047, B1992, B1993, B1994, B1995
B3E080201046W18
DTC
B1047
Driver-side side air bag module and other air bag module circuits short
B1992
Driver-side side air bag module circuit short to power supply
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
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.
• Resistance other than 1.4-3.2 ohms detected in driver-side side air bag
module circuit
• Malfunction in wiring harness between driver-side side air bag module and
SAS control module
POSSIBLE CAUSE
• Open or short circuit in wiring harness between driver-side side air bag
module and SAS control module
• Driver-side side air bag module malfunction
• SAS control module malfunction
Diagnostic procedure
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STEP
INSPECTION
ACTION
1
INSPECT DRIVER-SIDE SIDE AIR BAG MODULE
• Using the WDS or equivalent, verify the following
PID/DATA monitor.
(See PID/DATA MONITOR TABLE.)
- DS_AB
• Is the resistance of the driver-side side air bag module
normal?
- Resistance: 1.4-3.2 ohms
Yes
Replace the SAS control module.
(See SAS CONTROL MODULE
REMOVAL/INSTALLATION.)
No
Go to the next step.
2
INSPECT DRIVER-SIDE SIDE AIR BAG MODULE
CONNECTOR
Warning
• Handling the air bag system components
improperly can accidentally deploy the air bag
modules and pre-tensioner front buckles, which
may seriously injure you. Read the service
warnings and cautions before handling the air
bag system components.
(See SERVICE WARNINGS.)
(See SERVICE CAUTIONS.)
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1
min or more.
• Disconnect the driver-side side air bag module
connector.
• Is there any malfunction of the driver-side side air bag
module connector?
Yes
Replace the air bag wiring
harness.
No
Go to the next step.
3
VERIFY WHETHER MALFUNCTION IS IN DRIVER-
SIDE SIDE 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 side 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 B1047, B1992, B1993, B1994, and/or B1995
indicated?
Yes
Go to the next step.
No
Replace the driver-side side air
bag module.
(See SIDE AIR BAG MODULE
REMOVAL/INSTALLATION.)
4
Yes
Replace the SAS control module.
Mazda 3 Workshop Manual - RESTRAINTS + DTC
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17
INSPECT WIRING HARNESS BETWEEN DRIVER-
SIDE SIDE 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.
• Disconnect the driver and passenger-side front seat
connectors.
• Disconnect the driver and passenger-side curtain air
bag module connectors.
• Remove the console.
• Inspect the wiring harness between SAS control module
terminal 2B and driver-side side air bag module terminal
A, SAS control module terminal 2F and driver-side side
air bag module terminal B for the following:
- Short to ground
- Short to power supply
- Open circuit
• Is the wiring harness normal?
(See SAS CONTROL MODULE
REMOVAL/INSTALLATION.)
No
Replace the air bag wiring
harness.
DTC B1048, B1925, B1933, B1935, B1938
B3E080201046W16
DTC
B1048
Passenger-side air bag module (inflator No.1) and other air bag module
circuits short
B1925
Passenger-side air bag module (inflator No.1) circuit short to power
supply
B1933
Passenger-side air bag module (inflator No.1) circuit resistance high
B1935
Passenger-side air bag module (inflator No.1) circuit resistance low
B1938
Passenger-side air bag module (inflator No.1) circuit short to body
ground
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.
• Resistance other than 1.4-2.9 ohms detected in passenger-side air bag
module (inflator No.1) circuit
Mazda 3 Workshop Manual - RESTRAINTS + DTC
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18
• Malfunction in wiring harness between passenger-side air bag module
(inflator No.1) and SAS control module
POSSIBLE CAUSE
• Open or short circuit in wiring harness between passenger-side air bag
module (inflator No.1) and SAS control module
• Passenger-side air bag module (inflator No.1) malfunction
• SAS control module malfunction
Diagnostic procedure
STEP
INSPECTION
ACTION
1
INSPECT PASSENGER-SIDE AIR BAG MODULE
(INFLATOR NO.1)
• Using the WDS or equivalent, verify the following
PID/DATA monitor.
(See PID/DATA MONITOR TABLE.)
- PABAGR
• Is the resistance of the passenger-side air bag module
normal?
- Resistance: 1.4-2.9 ohms
Yes
Replace the SAS control module.
(See SAS CONTROL MODULE
REMOVAL/INSTALLATION.)
No
Go to the next step.
2
INSPECT PASSENGER-SIDE AIR BAG MODULE
(INFLATOR NO.1) CONNECTOR
Warning
• Handling the air bag system components
improperly can accidentally deploy the air bag
modules and pre-tensioner front buckles, which
may seriously injure you. Read the service
warnings and cautions before handling the air
bag system components.
(See SERVICE WARNINGS.)
(See SERVICE CAUTIONS.)
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1
min or more.
• Remove the glove compartment.
Yes
Replace the air bag wiring
harness.
No
Go to the next step.
Mazda 3 Workshop Manual - RESTRAINTS + DTC
Downloaded from https://carmanualshub.com/ - automotive repair manuals website
19
• Disconnect the passenger-side air bag module
connector.
• Is there any malfunction of the passenger-side air bag
module connector?
3
VERIFY WHETHER MALFUNCTION IS IN
PASSENGER-SIDE AIR BAG MODULE (INFLATOR
NO.1) OR RELATED WIRING HARNESS
• Connect the leads of the SST (Fuel and thermometer
checker) or apply 2-ohm resistance to passenger-side
air bag module (inflator No.1) connector terminals A
and B, and passenger-side air bag module (inflator
No.2) 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 B1048, B1925, B1933, B1935 and/or
B1938 indicated?
Yes
Replace the air bag wiring
harness, then go to the next step.
No
Replace the passenger-side air
bag module.
(See PASSENGER-SIDE AIR BAG
MODULE
REMOVAL/INSTALLATION.)
4
INSPECT SAS CONTROL MODULE
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1
min or more.
• Connect the passenger-side air bag module
connector.
• Are DTCs B1048, B1925, B1933, B1935 and/or
B1938 indicated?
Yes
Replace the SAS control module.
(See SAS CONTROL MODULE
REMOVAL/INSTALLATION.)
No
DTC troubleshooting completed.
DTC B1049, B1881, B1882, B1883, B1886
B3E080201046W13
DTC
B1049
Passenger-side pre-tensioner front buckle and other air bag module
circuits short
B1881
Passenger-side pre-tensioner front buckle circuit resistance high
B1882
Passenger-side pre-tensioner front buckle circuit short to power supply
B1883
Passenger-side pre-tensioner front buckle circuit short to body ground
B1886
Passenger-side pre-tensioner front buckle circuit resistance low
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
Mazda 3 Workshop Manual - RESTRAINTS + DTC
Downloaded from https://carmanualshub.com/ - automotive repair manuals website
20
damage the system. When performing an inspection, always follow the
inspection procedure.
• Resistance other than 1.5-3.1 ohms detected in passenger-side pre-
tensioner front buckle circuit
• Malfunction in wiring harness between passenger-side pre-tensioner front
buckle and SAS control module
POSSIBLE CAUSE
• Open or short circuit in wiring harness between passenger-side pre-tensioner
front buckle and SAS control module
• Passenger-side pre-tensioner front buckle malfunction
• SAS control module malfunction
Diagnostic procedure
STEP
INSPECTION
ACTION
1
INSPECT PASSENGER-SIDE PRE-TENSIONER
FRONT BUCKLE
• Using the WDS or equivalent, verify the following
PID/DATA monitor.
(See PID/DATA MONITOR TABLE.)
- PS_PTENS
• Is the resistance of the passenger-side pre-tensioner
front buckle normal?
- Resistance: 1.5-3.1 ohms
Yes
Replace the SAS control module.
(See SAS CONTROL MODULE
REMOVAL/INSTALLATION.)
No
Go to the next step.
2
INSPECT PASSENGER-SIDE PRE-TENSIONER
FRONT BUCKLE CONNECTOR
Warning
• Handling the air bag system components
improperly can accidentally deploy the air bag
modules and pre-tensioner front buckles, which
may seriously injure you. Read the service
warnings and cautions before handling the air
bag system components.
(See SERVICE WARNINGS.)
(See SERVICE CAUTIONS.)
• Turn the ignition switch to the LOCK position.
Yes
Replace the air bag wiring
harness.
No
Go to the next step.
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