Mazda 3 Workshop Manual

Mazda 3 Workshop Manual - RESTRAINTS + DTC 
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1 
 
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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5

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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DTC DISPLAY

B3E080201046W03

1. Connect the WDS or equivalent to the DLC-2 connector (16-pin).

2. Retrieve DTCs.

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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.

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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

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• 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

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• 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

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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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Mazda 3 Workshop Manual

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